CN102010061A - Nitrification and denitrification sewage treatment device and system - Google Patents

Abstract

The invention discloses an anaerobic-aerobic nitrification sewage treatment device which is characterized in that an anaerobic reaction zone is arranged at the center, an aerobic biomembrane nitrification reaction zone is arranged at the periphery, a sludge concentration A zone is arranged at the lower part of the aerobic biomembrane nitrification reaction zone, a supernatant liquid collecting A zone is arranged outside the upper part of the aerobic biomembrane nitrification reaction zone, and simultaneously, and a sludge rectifying A zone is additionally arranged between the anaerobic reaction zone and the aerobic biomembrane nitrification reaction zone. The invention also discloses an anaerobic-aerobic denitrification sewage treatment device which is characterized in that an aerobic reaction zone and an anaerobic reaction zone are respectively arranged at the upper part and the lower part of the center, a sludge rectifying B zone is arranged at the periphery, a sludge concentration B zone is arranged at the lower part of the sludge rectifying B zone, a supernatant liquid collecting B zone is arranged outside the upper part of the sludge rectifying B zone, and simultaneously, and an isolated drum B is additionally arranged in the sludge rectifying B zone so that an annular up-flow channel is formed between the isolated drum B and a cylindrical drum B. The invention also discloses a nitrification and denitrification sewage treatment system formed by sequentially connecting the two devices.

Description

A nitrification and denitrification sewage treatment device and system

technical field

The invention relates to multistage treatment of sewage, in particular to multistage treatment of sewage with at least one physical treatment step.

Background technique

The existing biological sewage treatment methods mainly include adsorption-biodegradation method (AB method) with phosphorus and nitrogen removal effects, anaerobic-aerobic method (AO method), anaerobic-anoxic-aerobic method (A ² O method ), oxidation ditch method and SBR sequenced batch activated sludge method, among which, SBR sequenced batch activated sludge method is a simple, fast and low-consumption sewage treatment process, which is very suitable for small and medium-sized towns with large changes in water quality and quantity Domestic sewage treatment, and easily biodegradable industrial wastewater treatment. However, this method still has the following problems to be solved in the process of biological nitrification, denitrification and phosphorus removal: 1. The difference in sludge age between nitrifying bacteria and phosphorus accumulating bacteria; 2. Nitrification requires low organic matter concentration, and denitrification requires relatively low High organic matter concentration; 3. Nitrification requires high oxygen, and denitrification requires low oxygen; 4. The nitrification process provides nitrate for the denitrification process, but when the nitrification process itself has too much nitrate, it inhibits the nitrification process and makes the whole process impossible. Continue; 5. The nitrification process produces acid and consumes alkali, while the denitrification process produces alkali.

On October 27, 2004, the Patent Office of the State Intellectual Property Office disclosed a "method for denitrification, denitrification, denitrification, and denitrification of urban sewage in a batch-type biofilm system" (the publication number is CN 1539769A), which discloses the following process steps: (1) Water intake period: raw water alternately enters first-stage reactors A and B at intervals of 4 hours; (2) Anaerobic period: raw water undergoes anaerobic circulation in A and B for 2 hours to release phosphorus; (3) Static internal water change period: after the first-stage reactor passes through the anaerobic cycle, it is left to settle for 0.5 hours, and the supernatant with high concentration of phosphorus is discharged into the second-stage reactor; (4) Nitrification reaction period: In the secondary reactor, the high-phosphorus water from the first-stage reactor was subjected to aerobic aeration for 3.5 hours to carry out nitrification reaction; (5) reflux in the nitrification liquid: the second-stage reactor was , standing for precipitation for 30min, and returning the supernatant (nitration solution) to the first-stage reactor; (6) denitrification and phosphorus accumulation period: in the first-stage reactor, the nitrification solution from the second-stage reactor is carried out Anoxic cycle for 1.0 hours, mainly using denitrifying phosphorus accumulating bacteria to remove phosphorus and nitrogen; (7) Aerobic reaction period: In the first-stage reactor, after 1.0 hours of anoxic, aerobic aeration is carried out for 4.0 hours, mainly Aerobic phosphorus uptake, removal of BOD and COD, and nitrification of residual NH3-N; (8) Sedimentation and drainage period: After the first stage reactor is left to settle for 0.5 hours after the aerobic end, the supernatant that meets the standard will be processed liquid discharge. Although the method described in the above-mentioned patent application has solved the existing problems of the prior art, the whole system requires at least 3 bioreactors, and still needs to adopt intermittent work, the complexity of the system and the long hydraulic retention time can be foreseeable.

The Patent Office of the State Intellectual Property Office disclosed a patent application for "a kind of A ₂ N denitrification and phosphorus removal sewage treatment method and device" (publication number is CN 1651343A) on August 10, 2005. The device (actually The above is a sewage treatment system) is composed of water pipes, water tanks, pumps, anaerobic tanks, intermediate sedimentation tanks, aerobic biofilm nitrification tanks, anoxic tanks, rapid aeration tanks, final sedimentation tanks, and outlet pipes in series. , A transcending sludge pipe is connected between the bottom of the intermediate sedimentation tank and the bottom of the anoxic tank; a return sludge pipe is connected between the bottom of the final sedimentation tank and the bottom of the anaerobic tank. As can be seen from the system described in the above-mentioned patent application, it is obvious that there are many devices used, the length of the process route and the size of the occupied area.

Contents of the invention

In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an integrated denitrification and denitrification sewage treatment device and a sewage treatment system composed thereof.

The technical scheme that the present invention solves the above problems is as follows:

An anaerobic-aerobic nitrification sewage treatment device is characterized in that the device has an A reaction tank, and the A reaction tank is composed of an A cylinder and an A cone from top to bottom; the A of the A reaction tank The center of the cylindrical barrel is provided with a cylindrical container A with an open upper end, and the outer layer of the cylindrical container A is provided with an isolation tube A, so that a cylindrical anaerobic reaction zone is formed in the cylindrical container A, and between the cylindrical container A and A An annular A sludge rectification zone is formed between the isolation cylinders, and an annular aerobic biofilm nitrification reaction zone is formed between the A isolation cylinder and the A cylindrical cylinder; the A conical cylinder of the A reaction tank forms a conical A Sludge concentration area; the outer side of the upper port of the A cylinder of the A reaction tank is provided with an L-shaped cross-section A group edge, and an annular A supernatant is formed between the A group edge and the A cylinder outer wall Convergence area; the cross-section is L-shaped A tank cover is provided on the upper mouth of the A group side, and the center of the upper part is provided with an A motor. Shaft, the lower part of the A stirring shaft is provided with an A stirring blade; the A tank cover is provided with an annular A air distribution pipe, and the A air distribution pipe is evenly distributed with a number of vertically downward A aeration pipes, each The root A aeration pipe extends to the lower part of the aerobic biofilm nitrification reaction zone, the end is provided with an A aeration head, and the middle part is provided with a packing ring carrying aerobic bacteria; the lower part of the A reaction tank is provided with a A water inlet pipe connected to the lower part of the cylindrical container; A water outlet pipe is provided at the bottom of the L-shaped side of the A group; the A mud discharge pipe is provided at the bottom of the A conical cylinder.

An anoxic-aerobic denitrification sewage treatment device is characterized in that the device has a B reaction tank, which is composed of a B cylinder and a B cone connection from top to bottom; the B reaction tank The center of the B cylinder is provided with a B cylinder with an open upper end, and the B cylinder is provided with a B isolation cylinder, wherein the middle of the B cylinder is provided with a horizontal partition with a flow hole, so that the B cylinder A cylindrical anoxic reaction zone is formed in the lower part of the container, a cylindrical aerobic reaction zone is formed in the upper part of the B cylindrical container, and an annular B sludge rectification zone is formed between the B cylindrical container and the B isolation cylinder. An annular ascending passage is formed between the B isolation cylinder and the B cylinder; a conical B sludge concentration zone is formed in the B conical cylinder of the B reaction tank; the upper port of the B cylinder of the B reaction tank There is an L-shaped cross-section on the outside of the B group edge, and an annular B supernatant collection area is formed between the B group edge and the outer wall of the B cylinder; the cross-section is an L-shaped B group edge. Tank cover, the center of its upper part is provided with a B motor, the output shaft of the B motor is connected to a B agitating shaft extending to the anoxic reaction zone at the lower part of the B cylindrical container, and the B agitating shaft is located in the anoxic reaction zone. One section of the zone is equipped with B stirring blades; the B tank cover is provided with annular B air distribution pipes, and several B aeration pipes are evenly distributed on the B air distribution pipes, and each B aeration pipe Extending to the bottom of the aerobic reaction zone, the end is provided with a B aeration head; the bottom of the B reaction tank is provided with a B water inlet pipe, and the front end of the water inlet pipe can be connected with the above-mentioned anaerobic-aerobic nitrification sewage treatment device The A water outlet pipe is matched and connected, and the rear end extends to the lower part of the B cylindrical container to communicate with the anoxic reaction zone; the bottom of the L-shaped B group edge is provided with a B water outlet pipe; the B conical cylinder There is a B discharge pipe at the bottom.

The anaerobic-aerobic nitrification sewage treatment device according to the present invention, wherein, the A cylindrical container and the A isolation cylinder are fixed together by a support rod arranged in the A sludge rectification area, and the A isolation cylinder can be directly fixed on the The lower surface of the A tank cover can also be fixed on the inner wall of the A cylinder using a support rod located in the aerobic biofilm nitrification reaction zone.

The anoxic-aerobic denitrification sewage treatment device according to the present invention, wherein, the B cylindrical container and the B isolation cylinder are fixed together by a support rod arranged in the B sludge rectification area, and the B isolation cylinder can be directly fixed On the lower surface of the B tank cover, also can use the support rod that is located in the upflow channel to be fixed on the inner wall of the B cylinder.

The anoxic-aerobic denitrification sewage treatment device of the present invention, wherein, the upflow hole set on the horizontal partition in the cylindrical container of B is located at the center of the horizontal partition, and the stirring shaft of B is It extends to the anoxic reaction zone through the upwelling hole.

A denitrification and denitrification sewage treatment system is characterized in that the system is composed of the above-mentioned anaerobic-aerobic nitrification sewage treatment device and anoxic-aerobic denitrification sewage treatment device connected in the following manner:

The outlet pipe A of the anaerobic-aerobic nitrification sewage treatment plant is directly connected to the B water inlet pipe of the anoxic-aerobic denitrification sewage treatment plant, and the sludge discharge pipe A of the anaerobic-aerobic nitrification sewage treatment plant is connected in series with the sludge lift pump Afterwards, it is connected in parallel on the B inlet pipe of the anoxic-aerobic denitrification sewage treatment device; the sludge discharge pipe B of the anoxic-aerobic denitrification sewage treatment device is connected in series with the sludge return pump and the anaerobic-aerobic nitrification sewage treatment device A water inlet pipe is connected.

Compared with the prior art, the present invention has the following advantages and effects:

1. According to the process characteristics of nitrification and denitrification, the present invention integrates the water transport container required by the whole process into two treatment devices, thereby greatly reducing the floor area of the whole sewage treatment process, and at the same time making all the process equipment factory-like Production can not only reduce equipment investment, but also shorten the construction period.

2. The present invention uses the process characteristics of nitrification and denitrification and the physical characteristics of water and sludge to rationally arrange the reaction areas, effectively solving the technical problem of mutual interference of the reactions during integration. Specifically, in the anaerobic-aerobic nitrification sewage treatment device, the anaerobic reaction zone is cleverly set in the center, the aerobic biofilm nitrification reaction zone is set around, and the A sludge concentration zone is set in the aerobic biofilm nitrification reaction zone. In the lower part of the area, the A supernatant collection area is set outside the upper part of the aerobic biofilm nitrification reaction area. At the same time, an A sludge rectification area is added between the anaerobic reaction area and the aerobic biofilm nitrification reaction area, so that both The effective isolation of the anaerobic and aerobic biofilm nitrification reaction zone and the sedimentation zone, which are necessary for the nitrification process, can further improve the separation effect of mud and water; in the anoxic-aerobic denitrification sewage treatment device, the aerobic The reaction zone and anoxic reaction zone are set in the upper and lower parts of the center, the B sludge rectification zone is set around, the B sludge concentration zone is set in the lower part of the B sludge rectification zone, and the B supernatant collection zone is set in the B sludge On the outer side of the upper part of the rectification area, a B isolation cylinder is added in the B sludge rectification area at the same time, so that an annular upflow channel is formed between the B isolation cylinder and the B cylinder, so that the anoxic gas necessary for the denitrification process can be eliminated. , The aerobic reaction zone and the sedimentation zone can be effectively isolated, and the separation effect of mud and water can be further improved.

Description of drawings

Fig. 1, Fig. 2 and Fig. 3 are the structural representations of a specific embodiment of the anaerobic-aerobic nitrification sewage treatment device of the present invention, wherein Fig. 1 is a front view (longitudinal section along the central axis), and Fig. 2 is a top view , FIG. 3 is a sectional view of A-A in FIG. 1 .

Fig. 4, Fig. 5, Fig. 6 and Fig. 7 are the structural representations of a specific embodiment of the anoxic-aerobic denitrification sewage treatment device of the present invention, wherein Fig. 4 is the main view (longitudinal section along the central axis), Fig. 5 is a plan view, Fig. 6 is a sectional view along B-B of Fig. 4 , and Fig. 7 is an enlarged view of a sectional view along C-C of Fig. 4 .

Fig. 8 is a process flow chart of a specific embodiment of the denitrification and denitrification sewage treatment system of the present invention.

Detailed ways

1 to 3 are a specific embodiment of the anaerobic-aerobic nitrification sewage treatment device according to the present invention, and its structure is as follows.

Referring to Fig. 1 and Fig. 3, A reaction tank 1 is composed of A cylindrical barrel 1-1 and A conical barrel 1-2 connected up and down, wherein, the outer side of the upper port of A cylindrical barrel 1-1 is provided with an L-shaped cross section. Group A side 2, the upper opening of group A side 2 is provided with A tank cover 4, and the bottom is provided with A outlet pipe 20, and an annular A supernatant liquid collection area is formed between A group side 2 and the outer wall of A cylinder 1-1 3; A cylindrical container 5 with an open upper end is provided in the center of the A cylindrical container 1-1, and the A cylindrical container 5 is provided with an A isolation tube 6, so that a cylindrical container 5 is formed in the A cylindrical container 5. Anaerobic reaction zone 7, an annular A sludge rectification area 8 is formed between A cylindrical container 5 and A isolation cylinder 6, and an annular aerobic biofilm is formed between A isolation cylinder 6 and A cylinder 1-1 Nitrification reaction zone 9; A sludge discharge pipe 21 is provided at the bottom of A conical cylinder 1-2, and a conical A sludge concentration zone 10 is formed inside. A water inlet pipe 19 communicating with the lower part of the A cylindrical container 5 is provided on the A conical cylinder 1-2 at the bottom of the above-mentioned A reaction tank 1 . The above-mentioned A isolation cylinder 6 is directly welded and fixed on the lower surface of the A tank cover 4, and the A cylindrical container 5 is fixed on the inner wall of the A isolation cylinder 6 by the support rod 15 arranged in the A sludge rectification area 8 .

Referring to Fig. 1, Fig. 2 and Fig. 3, the center of the above-mentioned A tank cover 4 top is provided with A motor 11, and the output shaft of A motor 11 is connected with an A stirring shaft 12 extending to the bottom of A cylindrical container 5, and the A stirring shaft 12 bottoms are provided with A stirring blade 13. The above-mentioned A tank cover 4 is also provided with an annular A air distribution pipe 14, and the A air distribution pipe 14 is evenly distributed with six vertically downward A aeration pipes 16, and each A aeration pipe 16 extends to the aerobic In the lower part of the biofilm nitrification reaction zone 9, an aeration head 17 is provided at the end, and a packing ring 18 carrying aerobic bacteria is set in the middle part.

4 to 7 are a specific embodiment of the anoxic-aerobic denitrification sewage treatment device according to the present invention, and its structure is as follows.

Referring to Figures 4 to 7, the B reaction tank 22 is composed of a B cylindrical barrel 22-1 and a B conical barrel 22-2 connected up and down, wherein, the outer side of the upper port of the B cylindrical barrel 22-1 is provided with an L-shaped cross section. B group side 23, the upper mouth of B group side 23 is provided with B tank cover 24, and the bottom is provided with B outlet pipe 25, forms the ring-shaped B supernatant liquid collection area between B group side 23 and B cylindrical tube 22-1 outer wall 26; The center of the B cylindrical tube 22-1 is provided with a B cylindrical container 27 with an open upper end, and a B cylindrical container 27 is provided with a B isolation tube 28, wherein the middle part of the B cylindrical container 27 is provided with a center belt upflow hole 29 horizontal partitions 30, thereby, form the anoxic reaction zone 31 of cylindrical shape at the bottom in B cylindrical container 27, form the aerobic reaction zone 32 of cylindrical shape at the top in B cylindrical container 27, in B cylindrical container An annular B sludge rectification area 33 is formed between 27 and B isolation cylinder 28, and an annular upflow passage 34 is formed between B isolation cylinder 28 and B cylindrical cylinder 22-1; the bottom of B conical cylinder 22-2 is provided with The B sludge discharge pipe 35 forms a conical B sludge concentration zone 36 inside. The B conical cylinder 22-2 at the bottom of the above-mentioned B reaction tank 22 is provided with a B water inlet pipe 44, and the front end of the water inlet pipe 44 can be matched with the A water outlet pipe 20 of the above-mentioned anaerobic-aerobic nitrification sewage treatment device, and the rear end Extending to the lower part of the B cylindrical container 27 communicates with the anoxic reaction zone 31. The B isolation cylinder 28 mentioned above is directly welded and fixed on the lower surface of the B tank cover 24, and the B cylindrical container 27 is fixed on the inner wall of the B isolation cylinder 28 by the support rod 37 arranged in the B sludge rectification area 33.

Referring to Fig. 4, Fig. 5 and Fig. 6, the center of the upper part of the B tank cover 24 is provided with a B motor 38, and the output shaft of the B motor 38 is connected to the B cylindrical container 27 through the upflow hole 29 provided on the horizontal partition 30. The B stirring shaft 39 of the anoxic reaction zone 31 of the lower part, the B stirring shaft 39 is provided with a B stirring blade 40 on a section of the anoxic reaction zone 31 located; the B tank cover 24 is also provided with an annular B air distribution pipe 41 , The B air distribution pipe 41 is evenly distributed with six vertically downward B aeration pipes 42, each B aeration pipe 42 extends to the lower part of the aerobic reaction zone 32, and the end is provided with a B aeration head 43.

Fig. 8 is a specific embodiment of the denitrification and denitrification sewage treatment system of the present invention, and its technological process is as follows.

Referring to Fig. 8, the A outlet pipe 20 of the anaerobic-aerobic nitrification sewage treatment device 45 shown in Figs. The water pipe 44 is connected, and then the A sludge discharge pipe 21 of the anaerobic-aerobic nitrification sewage treatment device is connected in parallel with the sludge lifting pump 47 on the B water inlet pipe 44 of the anoxic-aerobic denitrification sewage treatment device, and then the deficient The B sludge discharge pipe 35 of the oxygen-aerobic denitrification sewage treatment device 46 is connected in series with the sludge return pump 48 and the A water inlet pipe 19 of the anaerobic-aerobic denitrification sewage treatment device 45 is connected to one kind of denitrification and denitrification sewage treatment system.

The workflow and effects of the present invention will be described in further detail below in conjunction with the accompanying drawings and a specific application example:

The inoculated sludge comes from the return sludge _of Guangzhou Lijiao Sewage Treatment Plant. The test water is artificially ^synthesized wastewater. 4.14-7.95mg/L, TN is 26.5-37.2mg/L, pH is 6.8-7.2. The analytical methods used in the test were all in accordance with the standard methods issued by the State Environmental Protection Agency.

Referring to Fig. 1 and Fig. 4, inoculation sludge is added in anaerobic-aerobic nitrification sewage treatment plant 45 and anoxic-aerobic denitrification sewage treatment plant 46 before the test, and will use inoculation sludge alone as aerobic bacteria Carried on the aerobic bacteria packing ring 18, and then placed in the aerobic biofilm nitrification reaction zone 9. Referring to FIG. 8 in combination with FIG. 1 and FIG. 4 , the raw sewage is put into the water tank 49 , and the water inlet pump 50 , the sludge lift pump 48 and the sludge return pump 48 are started. Sewage and return sludge stay in the anaerobic reaction zone 7 for 40-60 minutes, and are fully mixed by A stirring blade 13, and a small amount of NO ₂ ^- and NO ₃ ^- in the return sludge are quickly denitrified by heterotrophic bacteria , Phosphorus accumulating bacteria absorb volatile organic acids and release phosphorus. The muddy water discharged from the anaerobic reaction zone 7 enters the A sludge rectification zone 8 for mud-water separation, and the supernatant enters the aerobic biofilm nitrification reaction zone 9 with the rising water flow for aerobic nitrification reaction and collects into the A supernatant collection zone 3, and then flow into the anoxic reaction zone 31 of the anoxic-aerobic denitrification sewage treatment device 46 through the A outlet pipe 20; The lifting pump 47 is lifted into the anoxic reaction zone 31 of the anoxic-aerobic denitrification sewage treatment device 46 . In the anoxic reaction zone 31, the nitrification liquid containing a large amount of NO ₃ ^- after aerobic nitrification is fully mixed with the concentrated phosphorus-releasing sludge for a residence time of 60-90 minutes, and the denitrifying phosphorus-accumulating bacteria in the phosphorus-releasing sludge and The NO ₃ in the nitrification solution ^- carries out the denitrification phosphorus absorption reaction. The mud-water mixture after the denitrification phosphorus absorption reaction enters the aerobic reaction zone 32 through the upflow hole 29 set on the horizontal partition 30. Under the aerobic state, the heterotrophic bacteria oxidize COD, and the nitrifying bacteria oxidize NH ₄ ⁺ to NO ₂ ^- and NO ₃ ^- , phosphorus accumulating bacteria perform aerobic phosphorus uptake. The above-mentioned aerobic reactions are aerated by the air pump 51, and the amount of aeration is adjusted according to the water inflow and outflow in the operating state, and the NH ₄ ⁺ in the effluent should be controlled at <5mg/L, and TP<1.2mg/L. The muddy water overflowing from the aerobic reaction zone 32 enters the B sludge rectification zone 33 for sludge-water separation, and the supernatant is collected into the B supernatant collection zone 26 through the upflow channel 34, and then discharged from the system; The B sludge concentration zone 36 concentrates, a part is sent back to the anaerobic reaction zone 7 of the anaerobic-aerobic nitrification sewage treatment device 45 by the return sludge pump 48 through the A water inlet pipe 19, and another part of the remaining sludge passes through the B sludge discharge pipe 35 excluded.

After the above treatment, the concentrations of COD, NH ₄ ⁺ , TP and TN in the discharged water are 15.7-33.5mg/L, 0-3.2mg/L, 0.11-1.14mg/L and 4.7-11.2mg/L respectively , the average values of the three indicators were 22.3mg/L, 1.4mg/L, 0.58mg/L and 7.6mg/L, respectively. For the above system, the average removal efficiencies of COD, NH4+, TP and TN were 87.8%, 94.6%, 89.4% and 80.9%, respectively.

Claims (6)

1. the nitrated waste disposal plant of anaerobic-aerobic is characterized in that, this device has A retort (1), and this A retort (1) is connected and composed by A cylindrical drum (1-1) and A circular cone tube (1-2) from top to bottom; Wherein, center in the A cylindrical drum (1-1) of described A retort (1) is provided with the spacious A cylindrical vessel (5) in upper end, the outer A isolating cylinder (6) that is arranged with of A cylindrical vessel (5), thereby, in A cylindrical vessel (5), form columniform anaerobic reaction district (7), between A cylindrical vessel (5) and A isolating cylinder (6), form annular A mud commutating zone (8), between A isolating cylinder (6) and A cylindrical drum (1-1), form annular aerobic biologic membrane nitration reaction district (9); Form the A mud enrichment region (10) of taper in the A circular cone tube (1-2) of described A retort (1); It is L shaped A group limit (2) that the outside of the upper port of the A cylindrical drum (1-1) of described A retort (1) is provided with the transverse section, forms annular A supernatant liquor pooling zone (3) between this A group limit (2) and A cylindrical drum (1-1) outer wall; The transverse section is the A cover (4) that is provided with suitable for reading on L shaped A group limit (2), the center on its top is provided with A motor (11), the output shaft connection one of this A motor (11) extends to the A stir shaft (12) of described A cylindrical vessel (5) bottom, and described A stir shaft (12) bottom is provided with A paddle (13); Described A cover (4) is provided with annular A air distribution (14), be evenly equipped with some A aeration tubes (16) vertically downward on this A air distribution (14), every A aeration tube (16) extends to the bottom in described aerobic biologic membrane nitration reaction district (9), the termination is provided with A aeration head (17), and the middle part is arranged with and is loaded with aerobic bacteria packing ring (18); Described A retort (1) bottom is provided with the A water inlet pipe (19) that is communicated with A cylindrical vessel (5) bottom; The bottom on described A group limit (2) is provided with A rising pipe (20); The bottom of described A circular cone tube (1-2) is provided with A shore pipe (21).

2. an anaerobic-aerobic denitrification waste disposal plant is characterized in that, this device has B retort (22), and this B retort (22) is connected and composed by B cylindrical drum (22-1) and B circular cone tube (22-2) from top to bottom; Center in the B cylindrical drum (22-1) of described B retort (22) is provided with the spacious B cylindrical vessel (27) in upper end, the outer B isolating cylinder (28) that is arranged with of B cylindrical vessel (27), wherein the middle part of B cylindrical vessel (27) is provided with the horizontal baffle (30) in band up-flow hole (29), thereby, columniform hypoxia response district (31) is formed at the bottom in B cylindrical vessel (27), form columniform aerobic reactor zone (32) at B cylindrical vessel (27) internal upper part, between B cylindrical vessel (27) and B isolating cylinder (28), form annular B mud commutating zone (33), between B isolating cylinder (28) and B cylindrical drum (22-1), form annular upflow channel (34); Form the B mud enrichment region (36) of taper in the B circular cone tube (22-2) of described B retort (22); It is L shaped B group limit (23) that the outside of the upper port of the B cylindrical drum (22-1) of described B retort (22) is provided with the transverse section, forms annular B supernatant liquor pooling zone (26) between this B group limit (23) and B cylindrical drum (22-1) outer wall; The transverse section is the B cover (24) that is provided with suitable for reading on L shaped B group limit (23), the center on its top is provided with B motor (38), the output shaft connection one of this B motor (38) extends to the B stir shaft (39) in the hypoxia response district (31) of described B cylindrical vessel (27) bottom, and described B stir shaft (39) is provided with B paddle (40) on a section of the hypoxia response district (31) that is positioned at; Described B cover (24) is provided with annular B air distribution (41), be evenly equipped with some B aeration tubes (42) vertically downward on this B air distribution (41), every B aeration tube (42) extends to the bottom of described aerobic reactor zone (32), and the termination is provided with B aeration head (43); Described B retort (22) bottom is provided with B water inlet pipe (44), the front end of this water inlet pipe (44) can be connected with A rising pipe (20) coupling of the nitrated waste disposal plant of the described anaerobic-aerobic of claim 1, and the rear end extends to B cylindrical vessel (27) bottom and is communicated with hypoxia response district (31); The bottom on described B group limit (23) is provided with B rising pipe (25); The bottom of described B circular cone tube (22-2) is provided with B shore pipe (35).

3. the nitrated waste disposal plant of a kind of anaerobic-aerobic according to claim 1, it is characterized in that, described A cylindrical vessel (5) and A isolating cylinder (6) are fixed together by the support bar (15) that is located at A mud commutating zone (8), and A isolating cylinder (6) directly is fixed on the lower surface of A cover (4).

4. a kind of anaerobic-aerobic denitrification waste disposal plant according to claim 2, it is characterized in that, described B cylindrical vessel (27) and B isolating cylinder (28) are fixed together by the support stick (37) that is located at B mud commutating zone (33), and B isolating cylinder (28) directly is fixed on the lower surface of B cover (24).

5. according to claim 2 or 4 described a kind of anaerobic-aerobic denitrification waste disposal plants, it is characterized in that, horizontal baffle (30) in the described B cylindrical vessel (27) is gone up the center that set up-flow hole (29) is positioned at horizontal baffle (30), and described B stir shaft (39) extends to hypoxia response district (31) through up-flow hole (29).

6. anti-nitre and denitrification Sewage treatment systems is characterized in that this system is connected to form by following manner by nitrated waste disposal plant of the described anaerobic-aerobic of claim 1 and the described anaerobic-aerobic denitrification of claim 2 waste disposal plant:

The A rising pipe (20) of the nitrated waste disposal plant of anaerobic-aerobic (45) directly is communicated with the B water inlet pipe (44) of anaerobic-aerobic denitrification waste disposal plant (46), is connected in parallel on the B water inlet pipe (44) of anaerobic-aerobic denitrification waste disposal plant (46) behind A shore pipe (21) the series connection mud lift pump (47) of the nitrated waste disposal plant of anaerobic-aerobic (45); B shore pipe (35) the series connection sludge reflux pump (48) of anaerobic-aerobic denitrification waste disposal plant (46) is communicated with the A water inlet pipe (19) of the nitrated waste disposal plant of anaerobic-aerobic (45).

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