CN118637744B - A chemical wastewater treatment device based on membrane bioreactor - Google Patents
A chemical wastewater treatment device based on membrane bioreactor Download PDFInfo
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- CN118637744B CN118637744B CN202410913620.8A CN202410913620A CN118637744B CN 118637744 B CN118637744 B CN 118637744B CN 202410913620 A CN202410913620 A CN 202410913620A CN 118637744 B CN118637744 B CN 118637744B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention relates to the technical field of sewage treatment, in particular to a chemical sewage treatment device based on a membrane bioreactor; the device comprises a box body, wherein a baffle is fixedly arranged in the box body; the partition plate divides the interior of the box into three chambers; a delivery pump is arranged in the box body; according to the invention, through the cooperation of the mounting cylinder and the sewage draining cylinder, the sludge deposited below the membrane assembly can enter between the mounting cylinder and the sewage draining cylinder through the sludge outlet under the pushing of the blade; the spiral plate pushes the sludge between the mounting cylinder and the sewage discharge cylinder out of the upper end of the sewage discharge cylinder, so that the sludge pushed out of the sewage discharge cylinder can fall into the reaction cavity, the sludge accumulated at the lower end of the membrane assembly is prevented from overflowing and blocking the filtering membrane pipe at the lower end of the membrane assembly, and the filtering effect of the membrane assembly on the sludge is improved; the sludge deposited at the lower end of the membrane component can enter the reaction cavity, so that the concentration of the sludge in the reaction cavity is increased; the biomass in the reaction cavity is improved, and the biological treatment effect and the water quality stability of the sewage are further improved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a chemical sewage treatment device based on a membrane bioreactor.
Background
When a chemical sewage treatment plant is used for treating chemical sewage, the chemical sewage needs to be subjected to neutralization treatment, namely, the pH value of the chemical sewage is adjusted by adding chemical agents or pollutants in the chemical sewage are precipitated, and solid precipitates, namely, sludge, are often formed in the processes; the chemical wastewater is treated by a membrane bioreactor; the membrane bioreactor is a novel wastewater treatment system organically combining a membrane separation technology and a biological treatment technology; the membrane component is used for replacing a traditional biological treatment technology end secondary sedimentation tank, high activated sludge concentration is kept in a membrane bioreactor, and biological treatment organic load is improved, so that the occupied area of sewage treatment facilities is reduced, and the residual sludge amount is reduced by keeping low sludge load; mainly utilizing membrane separation equipment to intercept activated sludge and macromolecular organic matters in water; after the sewage enters the membrane bioreactor, the activated sludge or the biological membrane in the membrane bioreactor can decompose organic substances in the sewage into smaller inorganic substances or carbon dioxide and water through biodegradation; the sludge and the impurities in the sludge can be blocked by the membrane component and are precipitated to the bottom of the sewage tank to form a sludge layer;
The sludge deposited at the bottom of the box body needs to be cleaned and treated regularly; the sludge is usually pumped out by a sludge pump for subsequent concentration, dehydration or further treatment, because the deposited sludge occupies the effective volume of the reaction cavity, so that the treatment space of the sewage is reduced, and the treatment efficiency and the treatment capacity are reduced; so the periodic cleaning of the sludge at the bottom of the tank body is an important step for ensuring the stable operation of the membrane biological reaction chamber and efficiently treating the sewage, and is helpful for maintaining the performance and water quality output of the system;
However, the sludge in the existing tank can be deposited at the bottom of the reaction chamber, especially in the lower region of the membrane module; these areas are usually blocked by the membrane module, so that the areas are difficult to clean, the water in the reaction cavity is blocked, the mixing and treatment process of sewage are affected, the stability and quality of the effluent are reduced, the accumulation of sludge at the bottom of the membrane module is gradually increased, and on one hand, the sludge is blocked by a filtering membrane pipe close to the lower end of the membrane module; the sewage treatment effect of the membrane biological reaction cavity is reduced; on the other hand, the deposition of the bottom sludge can lead to the loss of part of the sludge in terms of contact area and biological activity; the sludge concentration in the reaction cavity is reduced, so that the biomass in the reaction cavity is insufficient, and the biological treatment effect and the water quality stability of the sewage are affected;
In view of the above, the present invention provides a chemical wastewater treatment device based on a membrane bioreactor, which solves the above technical problems.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a chemical sewage treatment device based on a membrane bioreactor, and the invention ensures that sludge deposited below a membrane assembly can enter between a mounting cylinder and a sewage discharge cylinder through a sludge outlet under the pushing of a blade plate through the cooperation of the mounting cylinder and the sewage discharge cylinder; the spiral plate pushes the sludge between the mounting cylinder and the sewage discharge cylinder out of the upper end of the sewage discharge cylinder, so that the sludge pushed out of the sewage discharge cylinder can fall into the reaction cavity, the sludge accumulated at the lower end of the membrane assembly is prevented from overflowing and blocking the filtering membrane pipe at the lower end of the membrane assembly, and the filtering effect of the membrane assembly on the sludge is improved; the sludge deposited at the lower end of the membrane component can enter the reaction cavity, so that the concentration of the sludge in the reaction cavity is increased; the biomass in the reaction cavity is improved, and the biological treatment effect and the water quality stability of the sewage are further improved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a chemical wastewater treatment device based on a membrane bioreactor, which comprises:
The box body is internally and fixedly provided with a baffle plate; the partition plate divides the interior of the box into three chambers; a delivery pump is arranged in the box body; the three chambers are respectively an adjusting chamber, a reaction chamber and a sludge chamber; a membrane component is arranged in the reaction cavity; a liquid inlet communicated with the adjusting cavity is formed in one side of the box body; a feeding pipe connected with an external dosing pump is fixedly arranged at the upper end of the adjusting cavity; the upper end of the box body is fixedly connected with a liquid outlet pipe communicated with the membrane component;
The reaction chamber is internally provided with a sewage draining cylinder; the sewage draining cylinder is fixedly connected to the bottom of the reaction cavity; the installation cylinder is arranged at the bottom of the sewage draining cylinder; a supporting rod is fixedly connected in the mounting cylinder; the membrane component is fixedly arranged at the upper end of the supporting rod; a blade plate is arranged below the supporting rod; the blade plate is in sliding contact with the mounting cylinder; the surface of the mounting cylinder is provided with a mud outlet; the mounting cylinder is communicated with the sewage discharging cylinder through the mud outlet; the mud outlet is positioned below the supporting rod; a cavity is formed in the box body; a driving motor is fixedly arranged in the cavity; the driving motor is used for driving the blade plate to rotate;
The spiral plate is rotationally connected in the mounting cylinder; the spiral plate is in sliding sealing contact with the mounting cylinder and the sewage draining cylinder; a connecting unit is arranged in the mounting cylinder; the driving motor drives the spiral plate to rotate through the connecting unit; an aeration pipe is fixedly arranged at the bottom of the reaction cavity; the aeration pipe is surrounded around the sewage draining cylinder.
Preferably, the upper end of the sewage draining cylinder is fixedly connected with a baffle; one end of the baffle, which is far away from the sewage discharge cylinder, is fixedly connected with the mounting cylinder.
Preferably, the driving unit includes:
The gear shaft is rotationally connected in the mounting cylinder; the outer wall of the sewage discharge cylinder is provided with an annular groove; the annular groove is rotationally and hermetically connected with a gear ring fixedly connected with the spiral plate; a mounting cavity communicated with the annular groove is formed in the baffle; a transmission gear is rotatably connected in the mounting cavity; the gear shaft is meshed with the gear ring through a transmission gear;
a gear set comprising three drive gears; two adjacent driving gears are meshed with each other; wherein the two driving gears are respectively fixedly connected with an output shaft and a gear shaft of the driving motor; the other driving gear is rotatably connected with the cavity bottom of the cavity.
Preferably, the side wall of the sewage draining cylinder is fixedly provided with a turbidity detector.
Preferably, a groove is formed in the bottom of the box body; a sealing plate is connected in a sliding and sealing manner in the groove; the sealing plate is fixedly connected with the bottom of the groove through a supporting spring; the bottom of the groove is embedded with an electromagnetic sheet; one end of the delivery pump close to the sludge cavity is communicated with the sludge cavity, and the other end of the delivery pump is communicated with the groove.
Preferably, the upper end of the sealing plate is in sliding sealing connection with a connecting rod; an L-shaped groove is formed in the connecting rod; a conveying groove connected with a conveying pump is formed in the bottom of the groove; the notch of the conveying groove is connected with a sealing plug in a sliding and sealing manner; the sealing plug is connected with the groove wall of the conveying groove through a sealing spring.
Preferably, the baffle plate and the spiral plate are made of PTFE materials; the upper end face of the spiral plate is obliquely arranged.
Preferably, one end of the blade plate, which is close to the mud outlet, is fixedly connected with an arc plate; the arc-shaped plate is made of PTFE material; the blade plates are obliquely arranged; the inclination direction of the blade plate is the tangential direction of the output shaft of the driving motor.
The beneficial effects of the invention are as follows:
1. According to the invention, through the cooperation of the mounting cylinder and the sewage draining cylinder, the sludge deposited below the membrane assembly can enter between the mounting cylinder and the sewage draining cylinder through the sludge outlet under the pushing of the blade; the spiral plate pushes the sludge between the mounting cylinder and the sewage discharge cylinder out of the upper end of the sewage discharge cylinder, so that the sludge pushed out of the sewage discharge cylinder can fall into the reaction cavity, the sludge accumulated at the lower end of the membrane assembly is prevented from overflowing and blocking the filtering membrane pipe at the lower end of the membrane assembly, and the filtering effect of the membrane assembly on the sludge is improved; the sludge deposited at the lower end of the membrane component can enter the reaction cavity, so that the concentration of the sludge in the reaction cavity is increased; the biomass in the reaction cavity is improved, and the biological treatment effect and the water quality stability of the sewage are further improved.
2. According to the invention, the membrane component is arranged in the mounting cylinder, so that the mounting cylinder is separated from the aeration pipe in the reaction cavity, the membrane component is prevented from being influenced by bubbles generated by aeration, the sludge deposited below the membrane component enters between the mounting cylinder and the sewage discharging cylinder through the sludge outlet and is pushed into the reaction cavity by the spiral plate to sink downwards, and in the process of sludge sinking, the aeration pipe at the bottom of the reaction cavity can provide oxygen and stirring for the sludge, so that the sludge is dispersed in the reaction cavity, the uniformity of biomass distribution in the reaction cavity is ensured while the sludge concentration in the reaction cavity is improved, and the treatment effect of organisms in the reaction cavity on sewage is improved.
Drawings
The invention will be further described with reference to the drawings and embodiments.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
fig. 4 is an enlarged view at B in fig. 2;
fig. 5 is an enlarged view at C in fig. 4;
FIG. 6 is a schematic view of a mounting cartridge for use in the present invention;
Fig. 7 is an enlarged view at D in fig. 6;
In the figure: 1. a case; 11. a partition plate; 111. a regulating chamber; 112. a reaction chamber; 113. a sludge chamber; 12. a transfer pump; 13. a membrane module; 131. a liquid outlet pipe; 132. a support rod; 14. a liquid inlet; 141. a feed pipe; 15. a sewage discharge cylinder; 151. a spiral plate; 152. an aeration pipe; 16. a cavity; 161. a driving motor; 162. a gear shaft; 163. a drive gear; 17. a baffle; 171. a mounting cavity; 172. a transmission gear; 18. a turbidity detector; 2. a mounting cylinder; 21. a blade; 211. a mud outlet; 22. an annular groove; 221. a gear ring; 23. a groove; 231. a sealing plate; 232. a support spring; 233. an electro-magnetic sheet; 24. a connecting rod; 241. an L-shaped groove; 25. a conveying trough; 251. a sealing plug; 252. a seal spring; 26. an arc-shaped plate.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 7, the chemical wastewater treatment apparatus based on a membrane bioreactor according to the present invention comprises:
The box body 1 is internally and fixedly provided with a baffle 11; the partition plate 11 divides the interior of the box body 1 into three chambers; a delivery pump 12 is arranged in the box body 1; the three chambers are respectively a regulating chamber 111, a reaction chamber 112 and a sludge chamber 113; a membrane component 13 is arranged in the reaction cavity 112; a liquid inlet 14 communicated with the adjusting cavity 111 is formed in one side of the box body 1; a feeding pipe 141 connected with an external dosing pump is fixedly arranged at the upper end of the adjusting cavity 111; the upper end of the box body 1 is fixedly connected with a liquid outlet pipe 131 communicated with the membrane component 13;
A pollution discharge cylinder 15 is arranged in the reaction cavity 112; the pollution discharge cylinder 15 is fixedly connected to the bottom of the reaction cavity 112; the installation cylinder 2 is arranged at the bottom of the pollution discharge cylinder 15; a supporting rod 132 is fixedly connected in the mounting cylinder 2; the membrane component 13 is fixedly arranged at the upper end of the supporting rod 132; a blade 21 is arranged below the supporting rod 132; the blade 21 is in sliding contact with the mounting cylinder 2; a mud outlet 211 is formed in the surface of the mounting cylinder 2; the mounting cylinder 2 is communicated with the sewage draining cylinder 15 through a mud outlet 211; the mud outlet 211 is positioned below the supporting rod 132; a cavity 16 is formed in the box body 1; a driving motor 161 is fixedly arranged in the cavity 16; the driving motor 161 is used for driving the blade plate 21 to rotate;
A screw plate 151, the screw plate 151 being rotatably connected in the mounting cylinder 2; the spiral plate 151 is in sliding sealing contact with the mounting cylinder 2 and the sewage discharging cylinder 15; a connecting unit is arranged inside the mounting cylinder 2; the driving motor 161 drives the spiral plate 151 to rotate through a connection unit; an aeration pipe 152 is fixedly arranged at the bottom of the reaction cavity 112; the aeration pipe 152 surrounds the drain cylinder 15.
As an embodiment of the present invention, the upper end of the sewage draining cylinder 15 is fixedly connected with a baffle 17; the end of the baffle 17 far away from the sewage discharge cylinder 15 is fixedly connected with the mounting cylinder 2.
As an embodiment of the present invention, the driving unit includes:
A gear shaft 162, the gear shaft 162 being rotatably connected within the mounting cylinder 2; an annular groove 22 is formed in the outer wall of the sewage discharge cylinder 15; a gear ring 221 fixedly connected with the spiral plate 151 is rotationally and hermetically connected with the annular groove 22; a mounting cavity 171 communicated with the annular groove 22 is formed in the baffle 17; a transmission gear 172 is rotatably connected to the mounting cavity 171; the gear shaft 162 is meshed with the gear ring 221 through a transmission gear 172;
a gear set including three drive gears 163; adjacent two of the drive gears 163 are engaged with each other; wherein two of the driving gears 163 are respectively fixedly connected with the output shaft of the driving motor 161 and the gear shaft 162; the other of said drive gears 163 is rotatably connected to the bottom of the cavity 16.
As an embodiment of the invention, the side wall of the sewage draining cylinder 15 is fixedly provided with a turbidity detector 18;
In operation, sludge within the existing tank 1 will deposit at the bottom of the reaction chamber 112, particularly in the lower region of the membrane module 13; these areas are generally blocked by the membrane module 13, so that the areas are difficult to clean, water in the reaction cavity 112 is blocked, mixing and treatment processes of sewage are affected, stability and quality of effluent quality are reduced, accumulation of sludge at the bottom of the membrane module 13 is gradually increased, and on one hand, the sludge is blocked by a filtering membrane pipe close to the lower end of the membrane module 13; reducing the filtering effect of the membrane bioreactor 112 on sewage; on the other hand, the deposition of the bottom sludge can lead to the loss of part of the sludge in terms of contact area and biological activity; the sludge concentration in the reaction chamber 112 is reduced, so that the biomass in the reaction chamber 112 is insufficient, and the biological treatment effect and the water quality stability of the sewage are affected;
In contrast, by matching the mounting cylinder 2 with the pollution discharge cylinder 15, the sludge deposited below the membrane component 13 can enter between the mounting cylinder 2 and the pollution discharge cylinder 15 through the sludge outlet 211 under the pushing of the blade 21; the spiral plate 151 pushes out the sludge between the mounting cylinder 2 and the sewage discharge cylinder 15 from the upper end of the sewage discharge cylinder 15, so that the sludge pushed out of the sewage discharge cylinder 15 can fall into the reaction cavity 112, the sludge accumulated at the lower end of the membrane module 13 is prevented from overflowing and blocking the filtering membrane tube at the lower end of the membrane module 13, and the filtering effect of the membrane module 13 on the sludge is improved; the sludge deposited at the lower end of the membrane module 13 can also enter the reaction chamber 112, so that the concentration of the sludge in the reaction chamber 112 is increased; the biomass in the reaction cavity 112 is improved, so that the biological treatment effect and the water quality stability of the sewage are improved;
Although oxygen and stirring can be provided by adopting an aeration mode to promote the activity of microorganisms in the sludge at the bottom so as to accelerate the biodegradation process of the sludge, the aeration pipe 152 is arranged below the membrane component 13, so that bubbles generated by aeration can cause mechanical damage to the surface of the membrane, and particularly the membrane can be damaged or scratched under the high-energy aeration condition; moreover, the size and the number of the bubbles are improperly controlled, or the membrane assembly 13 is unreasonably designed, so that the bubbles penetrate the membrane assembly 13 to influence the effective isolation of the membrane, and the sewage can not reach the expected purification effect after passing through the membrane assembly 13 without being completely treated;
In this way, the membrane module 13 is installed in the installation cylinder 2, so that the installation cylinder 2 is separated from the aeration pipe 152 in the reaction cavity 112, the membrane module 13 is not influenced by bubbles generated by aeration, the sludge deposited below the membrane module 13 enters between the installation cylinder 2 and the sewage discharge cylinder 15 through the sludge outlet 211 and is pushed into the reaction cavity 112 by the spiral plate 151 and is sunk downwards, in the sludge sunk process, the aeration pipe 152 at the bottom of the reaction cavity 112 can provide oxygen and stirring for the sludge, so that the sludge is dispersed in the reaction cavity 112, the sludge concentration in the reaction cavity 112 is improved, the uniformity of biomass distribution in the reaction cavity 112 is also ensured, and the sewage treatment effect of organisms in the reaction cavity 112 is further improved;
In the initial state, the number of the delivery pumps 12 is three, wherein two delivery pumps 12 are arranged in the cavity 16, and the other delivery pump 12 is arranged at the upper end of the box body 1; of the two transfer pumps 12 installed in the cavity 16, the transfer pump 12 near the adjusting chamber 111 is connected with the adjusting chamber 111 and the reaction chamber 112 respectively through connecting pipes, and the transfer pump 12 near the sludge chamber 113 is connected with the reaction chamber 112 and the sludge chamber 113 respectively through connecting pipes; the delivery pump 12 arranged at the upper end of the box body 1 is respectively connected with the liquid separating cavity and the mounting cylinder 2 through connecting pipelines; the liquid outlet pipe 131 is connected with an external drainage system; chemical sewage enters the adjusting cavity 111 through the liquid inlet 14, and an external chemical adding pump is controlled to convey chemical agents into the adjusting cavity 111, so that the pH value of the chemical sewage in the adjusting cavity 111 is adjusted, and meanwhile, pollutants in the chemical sewage are adjusted to be precipitated, so that solid precipitates, namely sludge, are formed; Then controlling the delivery pump 12 communicated with the regulating cavity 111 to deliver the sewage in the regulating cavity 111 into the reaction cavity 112, so that the sewage carries the sludge into the reaction cavity 112, adding the sewage into the regulating cavity 111 again, and starting aeration by the aeration pipe 152 in the reaction cavity 112, so that bubbles generated by aeration can stir the sewage to avoid sewage precipitation in the sewage, in the aeration process, oxygen in the air can promote the activity of microorganisms in the bottom sludge, thereby enabling the sludge to carry out biodegradation in the reaction cavity 112, when the sewage is degraded to a discharge standard, controlling the delivery pump 12 at the upper end of the box body 1 to deliver the sewage in the reaction cavity 112 into the mounting cylinder 2, After the conveying is completed, the sewage in the adjusting cavity 111 is conveyed into the reaction cavity 112, and at the same time, the external drainage system extracts the sewage in the mounting cylinder 2 through the liquid outlet pipe 131; Due to the arrangement of the membrane component 13, the membrane component 13 can block sludge impurities in sewage, water enters an external drainage system through a filtering membrane pipe of the membrane component 13 and a liquid outlet pipe 131, at the moment, the concentration of the sludge in the installation cylinder 2 is increased, the sludge starts to be deposited continuously, at the moment, the driving motor 161 operates, the driving motor 161 can drive the blade plate 21 to rotate, the blade plate 21 can push the sludge deposited at the bottom of the installation cylinder 2 to enter between the installation cylinder 2 and the sewage discharge cylinder 15 through a sludge outlet 211, and the driving motor 161 can drive the gear 163 to rotate due to the rotation process of the driving motor 161, the driving gear 163 connected with the gear shaft 162 in the gear set can drive the gear shaft 162 to rotate, the gear shaft 162 can drive the gear 163 ring to rotate through the transmission gear 172 meshed with the gear shaft 162 in the rotating process, the gear ring 221 drives the spiral plate 151 fixedly connected with the gear ring to rotate, the sludge between the installation cylinder 2 and the pollution discharge cylinder 15 can flow out through the upper end of the pollution discharge cylinder 15 under the pushing of the spiral plate 151 due to the sliding sealing contact of the spiral plate 151 with the installation cylinder 2 and the pollution discharge cylinder 15, the sludge falls into the reaction cavity 112, and the sludge concentration in the reaction cavity 112 is increased, the content of microorganisms in the reaction cavity 112 is improved, so that the biological treatment effect of sewage in the reaction cavity 112 is improved, the biological treatment efficiency of the sewage is improved, and the practicability of the invention is improved; When the existing sludge is adhered to the surface of the membrane component 13 and the filtering effect of the membrane component 13 is blocked, a back flushing mode is mostly adopted, namely, an external drainage system is controlled to convey filtered water to enter the mounting cylinder 2 through the membrane component 13, so that the filtered water carries out back flushing on the sludge on the surface of the membrane component 13, the sludge adhered to the surface of the membrane component 13 can fall off, and the filtering effect of the membrane component 13 is further improved;
By the arrangement of the baffle 17, the gear ring 221 of the baffle 17 is arranged in the mounting cavity 171 in the baffle 17, so that the meshing environment of the gear ring 221, the gear shaft 162 and the gear ring 221 is in a closed state, thereby preventing the spiral plate 151 from pushing sludge to enter between the gear ring 221, the gear shaft 162 and the gear ring 221, not only preventing the sludge from blocking the meshing gaps of the gear ring 221, the gear shaft 162 and the gear ring 221, ensuring the normal transmission effect of the gear ring 221, the gear shaft 162 and the gear ring 221, but also preventing the sludge from extruding and wearing the gear ring 221, the gear shaft 162 and the gear ring 221, further improving the gear ring 221, the gear shaft 162 and the gear ring 221 and the service life, and improving the practicability of the invention;
Too high a sludge concentration can result in excessive dense or uneven mixing of biomass, affecting the balanced distribution of oxygen and nutrients, and thus reducing the biodegradability of microorganisms, as too crowded environments can limit the movement and metabolic activity of microorganisms; so the turbidity detector 18 is fixedly arranged on the side wall of the sewage draining cylinder 15, so that the turbidity detector 18 can detect the scattering capability of suspended particles or suspended substances in liquid on light to indirectly evaluate the concentration of the sludge, when the turbidity detector 18 detects that the concentration of the sludge in the sewage is higher than a set range value, the driving motor 161 is controlled to stop rotating, meanwhile, the conveying pump 12 communicated with the sludge cavity 113 is controlled to convey the sludge at the bottom of the mounting cylinder 2 into the sludge cavity 113, and the sewage in the regulating cavity 111 enters the reaction cavity 112 through conveying the sewage, so that the sewage in the regulating cavity 111 can dilute the sewage of the high-concentration sludge in the reaction cavity 112, so that the concentration of the sludge in the reaction cavity 112 can be always in a standard value range; the content of the sludge in the reaction cavity 112 is ensured to be in a proper range, so that proper sludge concentration can be helpful to maintain good biological activity and degradation capability in the reaction cavity 112; provides enough microorganism quality and activity, further effectively degrades organic substances in the sewage, and improves the treatment effect of the invention on chemical sewage.
As an embodiment of the invention, a groove 23 is formed at the bottom of the box body 1; a sealing plate 231 is connected in a sliding and sealing manner in the groove 23; the sealing plate 231 is fixedly connected with the bottom of the groove 23 through a supporting spring 232; the bottom of the groove 23 is embedded with an electromagnetic sheet 233; one end of the delivery pump 12 near the sludge cavity 113 is communicated with the sludge cavity 113, and the other end is communicated with the groove 23.
As an embodiment of the present invention, the upper end of the sealing plate 231 is connected with a connecting rod 24 in a sliding and sealing manner; an L-shaped groove 241 is formed in the connecting rod 24; a conveying groove 25 connected with the conveying pump 12 is formed in the bottom of the groove 23; the notch of the conveying groove 25 is connected with a sealing plug 251 in a sliding and sealing manner; the sealing plug 251 is connected to the wall of the feed channel 25 by a sealing spring 252.
As an embodiment of the present invention, both the baffle 17 and the spiral plate 151 are made of PTFE materials; the upper end surface of the spiral plate 151 is obliquely arranged.
As an embodiment of the present invention, an arc plate 26 is fixedly connected to one end of the blade 21 near the mud outlet 211; the arc plate 26 is made of PTFE material; the blade 21 is arranged obliquely; the inclination direction of the blade plate 21 is the tangential direction of the output shaft of the driving motor 161;
When the turbidity detector 18 detects that the concentration of the sludge in the reaction cavity 112 is higher than the set range in operation, the conveying pump 12 communicated with the sludge cavity 113 is required to be controlled to convey the sludge at the bottom of the installation cylinder 2 into the sludge cavity 113, and the area of the bottom of the installation cylinder 2 is larger, so that the sludge is dispersed at the bottom of the installation cylinder 2, thereby being unfavorable for the conveying pump 12 to quickly suck the sludge, and improving the treatment effect on the sludge at the bottom of the installation cylinder 2; according to the invention, the groove 23 is formed in the bottom of the box body 1, so that the sludge at the bottom of the mounting cylinder 2 can enter the groove 23, and the sludge at the bottom of the mounting cylinder 2 is gathered in the groove 23, so that the sludge at the bottom of the mounting cylinder 2 is avoided, and the conveying pump 12 communicated with the groove 23 is convenient for conveying the sludge gathered in the groove 23 into the conveying pump 12, so that the conveying rate of the sludge is improved; However, the arrangement of the groove 23 easily causes the accumulation of the sludge in the groove 23, so that before the sludge is fully stacked in the groove 23, the blade plate 21 cannot ensure that the sludge is pushed between the pollution discharge cylinder 15 and the installation cylinder 2 through the sludge outlet 211, thereby reducing the lifting efficiency of the sludge concentration in the reaction cavity 112 and further reducing the biological treatment effect on the sewage; in this regard, by setting the sealing plate 231 and controlling the electrification of the electromagnetic sheet 233, the electromagnetic sheet 233 can absorb the sealing plate 231 into the groove 23, so that the groove 23 is opened, at this time, the sealing plate 231 can drive the connecting rod 24 to be inserted into the conveying groove 25, at this time, the connecting rod 24 is in sliding sealing connection with the conveying groove 25, and as the connecting rod 24 is inserted into the conveying groove 25, the connecting rod 24 can push the sealing plug 251 in the conveying groove 25 to press the sealing spring 252 into the conveying groove 25, because the sealing plug 251 is in a frustum shape, after the sealing plug 251 enters the conveying groove 25, the conveying groove 25 is in an open state, The connecting rod 24 is connected in the conveying groove 25 in a sliding and sealing way; As the sealing plate 231 continues to approach the bottom of the groove 23, the sealing plate 231 pushes the sealing plug 251 to squeeze the sealing spring 252 through the connecting rod 24, when the compression amount of the sealing spring 252 is greater than the gravity of the connecting rod 24, the sealing plug 251 blocks the connecting rod 24, so that the connecting rod 24 is in sliding contact with the sealing plate 231 under the action of the blocking force, one end of the connecting rod 24 far away from the conveying groove 25 extends out of the sealing plate 231, at the moment, the connecting rod 24 drives the L-shaped groove 241 on the surface to be exposed, at the moment, the conveying pump 12 is controlled to operate, so that the conveying pump 12 communicated with the conveying groove 25 generates negative pressure adsorption force, so that the sludge in the groove 23 enters the conveying groove 25 through the L-shaped groove 241 of the connecting rod 24 and is finally conveyed into the sludge cavity 113 by the conveying pump 12; After the electromagnetic sheet 233 is powered off, the supporting spring 232 pushes the sealing plate 231 to the notch of the groove 23, at the moment, the connecting rod 24 extends out of the conveying groove 25, the sealing plug 251 in the conveying groove 25 plugs the conveying groove 25 again under the pushing of the sealing spring 252, at the moment, the connecting rod 24 which is not blocked by the sealing plug 251 is reset under the action of self gravity, so that the connecting rod 24 drives the L-shaped groove 241 on the surface to be inserted into the sealing plate 231, at the moment, the connecting rod 24 and the conveying groove 25 are in a closed state, thereby preventing sewage in the mounting cylinder 2 from entering the groove 23 and preventing sludge remained in a connecting pipeline of the conveying pump 12 from entering the groove 23, The cleaning in the groove 23 is further ensured, the sealing spring 252 is prevented from being blocked by impurities such as sludge, the upper end face of the sealing plate 231 and the lower end face of the mounting cylinder 2 are in the same plane, namely, the sealing plate 231 is prevented from blocking the blade plate 21, the sludge is prevented from entering the groove 23, the sludge can be effectively introduced between the mounting cylinder 2 and the pollution discharge cylinder 15 through the sludge outlet 211, the sludge is further accelerated to be conveyed into the reaction cavity 112, the sludge concentration in the reaction cavity 112 is improved, the microbial load is further improved, and the sewage treatment effect of the microorganisms is accelerated; The baffle 17 and the spiral plate 151 are made of PTFE materials, so that sludge is prevented from adhering to the surfaces of the baffle 17 and the spiral plate 151 to ensure that the sludge can effectively enter the reaction cavity 112, and the upper end face of the spiral plate 151 is obliquely arranged, so that when the spiral plate 151 pushes the sludge to the upper end of the sewage discharge cylinder 15, the sludge can be pressed along the inclined plane of the upper end of the spiral plate 151 to fall into the reaction cavity 112, thereby improving the concentration of the sludge and the microorganism content in the reaction cavity 112, further improving the sewage treatment efficiency in the reaction cavity 112, and the impeller 21 is obliquely arranged; the inclination direction of the blade plate 21 is the tangential direction of the output shaft of the driving motor 161, so that in the process that the blade plate 21 pushes the sludge at the bottom of the mounting cylinder 2 to rotate, the sludge can move along the blade plate 21 in the tangential direction towards the direction close to the cylinder wall of the mounting cylinder 2, and the sludge is accelerated to flow into the sludge outlet 211; The arrangement of the arc plate 26 is that after the blade plate 21 pushes the sludge in the mounting cylinder 2 into the sludge outlet 211, the blade plate 21 drives the arc plate 26 to the sludge outlet 211 along with the blade plate 21 crossing the sludge outlet 211, so that the arc plate 26 blocks the sludge outlet 211, when the spiral plate 151 scoops the sludge between the mounting cylinder 2 and the sewage discharging cylinder 15, the sludge is prevented from being extruded to enter the mounting cylinder 2 through the sludge outlet 211, the sludge entering the space between the mounting cylinder 2 and the sewage discharging cylinder 15 is further ensured to be effectively scooped by the spiral plate 151 and conveyed to the top of the sewage discharging cylinder 15 and pushed into the reaction cavity 112, the sludge in the mounting cylinder 2 is ensured to be capable of rapidly and effectively filling the sludge concentration in the reaction cavity 112, Further improving the adding speed of the sludge concentration in the reaction cavity 112 and accelerating the sewage treatment efficiency in the reaction cavity 112.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present invention, and furthermore, the terms "first", "second", "third", etc. are merely used for distinguishing the description, and should not be construed as indicating or implying relative importance.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A chemical wastewater treatment device based on a membrane bioreactor, comprising:
The device comprises a box body (1), wherein a baffle plate (11) is fixedly arranged in the box body (1); the partition board (11) divides the interior of the box body (1) into three chambers; a conveying pump (12) is arranged in the box body (1); the three chambers are respectively an adjusting chamber (111), a reaction chamber (112) and a sludge chamber (113); a membrane component (13) is arranged in the reaction cavity (112); a liquid inlet (14) communicated with the adjusting cavity (111) is formed in one side of the box body (1); a feeding pipe (141) connected with an external dosing pump is fixedly arranged at the upper end of the adjusting cavity (111); the upper end of the box body (1) is fixedly connected with a liquid outlet pipe (131) communicated with the membrane component (13), and is characterized in that:
The device comprises a mounting cylinder (2), wherein a pollution discharge cylinder (15) is arranged in the reaction cavity (112); the pollution discharge cylinder (15) is fixedly connected to the bottom of the reaction cavity (112); the mounting cylinder (2) is mounted at the bottom of the pollution discharge cylinder (15); a supporting rod (132) is fixedly connected in the mounting cylinder (2); the membrane component (13) is fixedly arranged at the upper end of the supporting rod (132); a blade plate (21) is arranged below the supporting rod (132); the blade plate (21) is in sliding contact with the mounting cylinder (2); a mud outlet (211) is formed in the surface of the mounting cylinder (2); the mounting cylinder (2) is communicated with the sewage draining cylinder (15) through a mud outlet (211); the mud outlet (211) is positioned below the supporting rod (132); a cavity (16) is formed in the box body (1); a driving motor (161) is fixedly arranged in the cavity (16); the driving motor (161) is used for driving the blade plate (21) to rotate;
The spiral plate (151) is rotatably connected in the mounting cylinder (2); the spiral plate (151) is in sliding sealing contact with the mounting cylinder (2) and the pollution discharge cylinder (15); a connecting unit is arranged inside the mounting cylinder (2); the driving motor (161) drives the spiral plate (151) to rotate through the connecting unit; an aeration pipe (152) is fixedly arranged at the bottom of the reaction cavity (112); the aeration pipe (152) surrounds the sewage discharge cylinder (15).
2. The chemical wastewater treatment device based on the membrane bioreactor according to claim 1, wherein: the upper end of the sewage draining cylinder (15) is fixedly connected with a baffle (17); one end of the baffle (17) far away from the sewage draining cylinder (15) is fixedly connected with the mounting cylinder (2).
3. The chemical wastewater treatment device based on the membrane bioreactor as claimed in claim 2, wherein: the drive unit includes:
The gear shaft (162) is rotatably connected in the mounting cylinder (2); an annular groove (22) is formed in the outer wall of the sewage draining cylinder (15); the annular groove (22) is rotationally and hermetically connected with a gear ring (221) fixedly connected with the spiral plate (151); a mounting cavity (171) communicated with the annular groove (22) is formed in the baffle (17); a transmission gear (172) is rotationally connected to the mounting cavity (171); the gear shaft (162) is meshed with the gear ring (221) through a transmission gear (172);
A gear set comprising three drive gears (163); two adjacent driving gears (163) are meshed with each other; wherein the two driving gears (163) are respectively fixedly connected with an output shaft of the driving motor (161) and a gear shaft (162); the other driving gear (163) is rotatably connected to the bottom of the cavity (16).
4. A membrane bioreactor-based chemical wastewater treatment plant as claimed in claim 3, wherein: the side wall of the sewage draining cylinder (15) is fixedly provided with a turbidity detector (18).
5. The chemical wastewater treatment device based on the membrane bioreactor according to claim 4, wherein: a groove (23) is formed in the bottom of the box body (1); a sealing plate (231) is connected in a sliding and sealing manner in the groove (23); the sealing plate (231) is fixedly connected with the bottom of the groove (23) through a supporting spring (232); an electromagnetic sheet (233) is embedded at the bottom of the groove (23); one end of a delivery pump (12) close to the sludge cavity (113) is communicated with the sludge cavity (113), and the other end is communicated with the groove (23).
6. The chemical wastewater treatment device based on the membrane bioreactor according to claim 5, wherein: the upper end of the sealing plate (231) is connected with a connecting rod (24) in a sliding and sealing manner; an L-shaped groove (241) is formed in the connecting rod (24); a conveying groove (25) connected with the conveying pump (12) is formed in the bottom of the groove (23); the notch of the conveying groove (25) is in sliding sealing connection with a sealing plug (251); the sealing plug (251) is connected with the groove wall of the conveying groove (25) through a sealing spring (252).
7. The chemical wastewater treatment device based on the membrane bioreactor according to claim 6, wherein: the baffle (17) and the spiral plate (151) are made of PTFE materials; the upper end face of the spiral plate (151) is obliquely arranged.
8. The chemical wastewater treatment device based on the membrane bioreactor as claimed in claim 7, wherein: one end of the blade plate (21) close to the mud outlet (211) is fixedly connected with an arc plate (26); the arc-shaped plate (26) is made of PTFE material; the blade plate (21) is obliquely arranged; the inclination direction of the blade plate (21) is the tangential direction of the output shaft of the driving motor (161).
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| CN202410913620.8A CN118637744B (en) | 2024-07-09 | 2024-07-09 | A chemical wastewater treatment device based on membrane bioreactor |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207108766U (en) * | 2017-08-24 | 2018-03-16 | 云南长江绿海环境工程股份有限公司 | A kind of water cleaning systems based on MBR membrane technologies |
| CN114249505A (en) * | 2021-12-31 | 2022-03-29 | 连云港东江水务有限公司 | Sewage treatment MBR (membrane bioreactor) and sewage treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018101559A1 (en) * | 2016-11-30 | 2018-06-07 | 두산중공업 주식회사 | Membrane filtration system and membrane bioreactor comprising same |
| CN214244126U (en) * | 2020-12-31 | 2021-09-21 | 甘肃首创环保科技有限公司 | Villages and small towns sewage treatment integrated device |
| CN215049536U (en) * | 2021-06-04 | 2021-12-07 | 天津锐创环保科技有限公司 | Integrated MBBR sewage treatment equipment |
| CN217230357U (en) * | 2022-02-28 | 2022-08-19 | 邓斯祺 | AAO-MBR sewage treatment system |
| CN219058756U (en) * | 2022-11-29 | 2023-05-23 | 浙江正浩智能制造有限公司 | Sludge recycling water treatment equipment |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207108766U (en) * | 2017-08-24 | 2018-03-16 | 云南长江绿海环境工程股份有限公司 | A kind of water cleaning systems based on MBR membrane technologies |
| CN114249505A (en) * | 2021-12-31 | 2022-03-29 | 连云港东江水务有限公司 | Sewage treatment MBR (membrane bioreactor) and sewage treatment method |
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