CN117185581B - Marine kitchen waste and black ash water comprehensive treatment device and treatment process method - Google Patents
Marine kitchen waste and black ash water comprehensive treatment device and treatment process method Download PDFInfo
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Abstract
The invention discloses a comprehensive treatment device and a treatment process method for kitchen waste and black ash water for a ship, wherein the comprehensive treatment device comprises a black water vacuum pump station module, a spiral shell stacking machine module, a regulating water tank module, a pressurized dissolved air flotation module and an electrocatalytic oxidation module, wherein the discharged materials of the black water vacuum pump station module and the spiral shell stacking machine module are used as a feeding source of the regulating water tank module, the regulating water tank module is used for aerating, mixing and stirring sewage, quantitatively regulating the sewage to enter the pressurized dissolved air flotation module, the pressurized dissolved air flotation module is used for carrying out solid-liquid separation on the sewage, and a liquid phase of the pressurized dissolved air flotation module enters the electrocatalytic oxidation module to degrade organic matters in the sewage.
Description
Technical Field
The invention relates to the technical field of garbage and sewage treatment, in particular to a comprehensive treatment device and a treatment process method for kitchen garbage and black ash water for ships.
Background
With the development of shipping industry, the public is consciously improved to protect marine environment, the requirements on the emission standard of ship water pollutants generated by production and life of people on ships are higher and higher, and pollutants generated by life of people, such as kitchen waste, domestic sewage, medical wastewater, kitchen grey water, washing grey water and the like, are collected and treated in time and then are discharged up to the standard or received by passing through the shore after port, so that the safety of the ship environment and the health of the people are ensured.
In recent twenty years, independent equipment and corresponding technologies are developed for collecting, treating and discharging water pollutants of ships such as kitchen waste and domestic sewage in China, and the water pollutants are well developed. The technical equipment for collecting and treating the kitchen waste is that the kitchen waste is directly discharged outside after being crushed in a non-limiting area, and is stored in a storage tank with a relatively large volume after being collected in vacuum after being crushed in a limiting area, or is discharged to sea after sailing to the non-limiting area so as to meet the discharge requirements of international standards and national standards, or is received and calculated by going to port and passing through the shore. The kitchen waste smashing and collecting device has the advantages that a large vacuum tank is needed on a ship to store kitchen waste after smashing and collecting, a large ship space is occupied, and secondly, a domestic sewage treatment device matched with the ship only treats black water and can treat the black water and grey water developed in recent years, wherein most of equipment adopts a biochemical treatment technology and is characterized by being low in energy consumption, but the kitchen waste smashing and collecting device has the advantages that the equipment is large in size, and when the kitchen waste smashing and collecting device meets large changes of personnel on a ship and an ocean engineering platform or is flushed by adopting a disinfectant to clean a toilet, an ecological system in the equipment can be greatly influenced, so that the treated water quality is unstable and even exceeds standards. Less equipment adopts an electrolytic treatment technology, and because the electrolytic treatment technology is adopted, a larger flocculation sludge precipitation space is required to be arranged in the equipment, more electric flocculation sludge is generated simultaneously, secondary pollution is easy to generate, and the defects are more remarkable under the development situation that the special cabin cabinet is arranged at the bilge for storage along with the fact that the international society cannot directly discharge the sludge.
In view of the above, it is necessary to provide a comprehensive treatment device and treatment process method for kitchen waste and black ash water for ships to solve the above problems.
Disclosure of Invention
The invention aims to solve the technical problems and provides a comprehensive treatment device and a treatment process method for kitchen waste and black ash water for ships.
In order to achieve the aim, the invention adopts the following technical scheme that the comprehensive treatment device for the kitchen waste and the black ash water for the ship comprises a black water vacuum pump station module, a spiral shell stacking machine module, an adjusting water tank module, a pressurized dissolved air flotation module and an electrocatalytic oxidation module, wherein the discharging materials of the black water vacuum pump station module and the spiral shell stacking machine module are used as the feeding sources of the adjusting water tank module, the adjusting water tank module is used for carrying out aeration mixing and stirring on sewage, quantitatively adjusting the sewage to enter the pressurized dissolved air flotation module, the pressurized dissolved air flotation module is used for carrying out solid-liquid separation on the sewage, and the liquid phase of the sewage enters the electrocatalytic oxidation module to degrade organic matters in the sewage;
the spiral shell machine module comprises a mixing tank, an input pipe, a spiral component main body, a driving motor, a water storage tank and a sludge discharge guide plate which are sequentially connected, kitchen waste enters the mixing tank and is subjected to solid-liquid separation through extrusion of the spiral component main body, separated kitchen waste water enters the water storage tank, and sludge is sent out by the sludge discharge guide plate;
The sewage treatment device comprises a sewage treatment device, a sewage treatment device and a sewage treatment device, wherein the sewage treatment device comprises a sewage treatment device, a sewage treatment device and a sewage treatment device, the sewage treatment device is characterized in that the sewage treatment device comprises a sewage treatment device, a sewage treatment device and a sewage treatment device;
The pressurized dissolved air flotation module comprises an air flotation machine body, a flocculation unit, a dissolved air pump unit, a dissolved air tank unit, a sludge discharge pump unit and a water collecting unit, wherein the tail end of the water discharge unit is connected to the lower part of the air flotation machine body, the dissolved air pump unit inputs dissolved air water to the lower part of the air flotation machine body and is used for being combined with solids in sewage to float on the water surface;
The electrocatalytic oxidation module comprises a plurality of electrocatalytic oxidation assemblies which are arranged in parallel, and the water collecting unit is connected to the electrocatalytic oxidation assemblies through pipelines to perform continuous strong oxidation on sewage to degrade organic matters.
Further, the black water vacuum pump station module comprises a vacuum pump and a vacuum pipe system, wherein the vacuum pump collects black water and sends the black water into the adjusting water tank body through the vacuum pipe system, and flexible connecting pipes are arranged in front of and behind the vacuum pump.
Further, the driving motor drives the screw shaft in the screw assembly main body to rotate, and kitchen waste flows into the input pipe from the mixing tank and is conveyed into the screw assembly to be concentrated and extruded, so that the sludge dewatering rate is not less than 75%.
Further, the air supply unit is communicated with an aerator at the bottom of the tank through an air supply pipeline sequentially by an air pump, a ball valve, a check valve, an air pressure gauge and a stop valve, the drainage unit is communicated with the bottom of the adjusting tank through a crushing pump, and a liquid level interlocking switch is arranged on the adjusting tank.
Further, an air floatation contact area, an air floatation separation area and a mud collecting area are arranged in the air floatation machine body from bottom to top, and a dissolved air releaser is arranged in the air floatation contact area and is communicated with a dissolved air tank outside the air floatation machine body through a pipeline;
the flocculation unit consists of a flocculation tank body and a stirring paddle with a stirring motor, and is communicated with the air flotation machine body through a bottom pipeline, PAC and PAM coagulant are added into the flocculation tank body for uniform mixing, and the mixture flows into the air flotation machine body from the bottom;
The dissolved air pump unit is connected out from the bottom side part of the air flotation machine body through a pipeline and is communicated with the side part of the dissolved air tank through a dissolved air pump;
the dissolved air tank unit is sequentially composed of a dissolved air tank, an air compressor connected with the tank, an air pressure gauge at the tank top, a safety valve and a liquid level floating ball switch on the tank body, and a pipeline at the bottom of the dissolved air tank is connected to a dissolved air water pipe in the air flotation machine body;
the outlet of the mud collecting area at the top of the air flotation machine main body is communicated with a mud discharging unit, and the mud discharging unit conveys the mud of the mud collecting area into a mixing tank of the spiral shell stacking machine module through a mud pump for further dehydration and drying;
The right side part of the air flotation machine body is connected with a water collection tank, the water collection tank is communicated with the air flotation machine body through a water collection pipe, the water collection pipe is arranged at the lower part in the air flotation machine body, and the water collection tank overflows into a circulating water tank in the electrocatalytic oxidation module.
Further, the electrocatalytic oxidation module also comprises a circulating water tank, a circulating water delivery unit, a clean water tank and a treated water drainage unit,
The circulating water tank and the clean water tank are divided into two chambers by a partition plate, the two chambers are arranged at the lower side of the electrocatalytic oxidation assembly, a pretreated sewage and wastewater inlet is arranged on the side face of the circulating water tank, a seawater inlet and a vent are arranged at the top of the circulating water tank, and a circulating water outlet is arranged at the bottom side part of the circulating water tank and is communicated with the circulating water delivery unit;
The water in the circulating water tank is conveyed to the electrocatalytic oxidation assembly by the circulating water pump, an outlet pipe of the electrocatalytic oxidation assembly is connected with the top of the clean water tank, and a treated water outlet is arranged at the bottom of the clean water tank and communicated with the treated water drainage unit.
Further, be provided with the photolysis dechlorination that ultraviolet fluorescent tube is used for the clear water in the clear water tank, the clear water tank top is provided with exhaust gas concentration detecting element, be equipped with strong exhaust pipe on the clear water tank, strong exhaust pipe includes air supply pipe, blast pipe, air supply pipe top is connected, the end is connected with the clear water tank with the air pump, the blast pipe is connected at the clear water tank top, exhaust gas concentration detecting element includes the combustible gas detector, the combustible gas detector sets up on the blast pipe.
Furthermore, the treated water drainage unit is provided with a circulating water pump, and the outlet end of the circulating water pump is connected in parallel with an outboard drainage pipeline and a shore drainage pipeline.
A comprehensive treatment process method for kitchen waste and black ash water for a ship comprises the following steps of
S1, carrying out vacuum collection on black water through a vacuum pump station module, and then conveying the black water into a regulating water tank body of a regulating water tank module for aeration treatment;
S2, kitchen waste and sludge enter a mixing tank in the spiral stacking machine module and enter a spiral component main body through an input pipe for dehydration, so that the dried sludge is discharged and bagged through a sludge discharge guide plate, the kitchen waste wastewater falls into a water storage tank, and the kitchen waste wastewater automatically flows into a water-saving tank to be aerated together with the sewage in the S1;
S3, after kitchen waste water, black water collected in vacuum, black water collected by gravity, kitchen grey water and black grey water transferred from a black grey water cabin are pumped into a water-regulating tank body, an air source is provided by an air supply unit and aerated by an aerator, so that the kitchen waste water, the black water and the grey water are fully mixed and homogenized, and quantitatively conveyed to a pressurized dissolved air floatation module by a drainage unit; the sewage and wastewater enter the bottom side part of the main body of the air floatation machine from entering the pressurized dissolved air floatation module, and after the sewage and wastewater enter the combined air floatation contact area after effective flocculation reaction, the clean water is pressurized to 4.5-5 bar by the dissolved air water pump unit, the gas in the dissolved air tank is greatly dissolved into water to reach a saturated state, the formed pressurized dissolved air water is depressurized and released by the dissolved air releaser to generate a large number of micro bubbles, the suspended flocs in the air floatation contact area are fully contacted with the suspended flocs in the water, so that the suspended flocs in the sewage and wastewater adhere under the micro bubbles and float to the water surface along with the bubbles, the floating mud overflows to the mud collecting area through the holes on the partition plate and is pumped to the spiral shell stacking machine module by the mud discharging pump, and the pretreated water with the effect of high-efficiency solid-liquid separation after air floatation is collected into the water collecting tank through the water collecting pipe, and overflows to the electrocatalytic oxidation module;
S4, the pretreated sewage and wastewater enter an electrocatalytic oxidation module for treatment, and the electrocatalytic oxidation module directly degrades organic matters through insoluble anodes or hydroxyl free radicals with strong oxidation generated by anode reaction, hypochlorous acid and other intermediate matters to degrade the organic matters;
And S5, under an emergency working condition, closing a water inlet valve on the pressurized dissolved air floatation module, and realizing emergency discharge of kitchen waste water and black ash water through a water discharge unit at the bottom of the adjusting water tank body and an overflow port on the clean water tank.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention carries out vacuum collection through black water, dehydration and fixation of kitchen waste, mixing of kitchen waste water and black ash water, slow release peak tempering and uniform quantity, efficient pretreatment of oil removal and mud removal of sewage and waste water through a pressurized air floatation module,
2. The pressurized dissolved air flotation module is one of the core modules of the integrated treatment device, and because kitchen waste water and kitchen grey water are brought into the black grey water for comprehensive treatment, a large amount of animal and vegetable oil and suspended matters are contained in the black grey water, if the oil and vegetable oil and suspended matters cannot be treated to the greatest extent in advance, the comprehensive treatment effect of the subsequent electrocatalytic oxidation treatment module is greatly affected, and the module has excellent oil and mud removal effects.
3. The spiral shell stacking machine module can effectively dehydrate and remove solid from kitchen waste and sludge, the sludge drying rate can reach 75%, the volume and the weight are greatly reduced, and meanwhile fermentation secondary pollution caused by wet waste storage is avoided.
4. The electrocatalytic oxidation module is a core treatment process section in an integrated device, thoroughly degrades pollutants by adopting strong oxidation effects of direct oxidation and indirect oxidation, ensures that residual chlorine in clear water reaches the standard through photolysis, and does not produce secondary pollution.
5. The sewage and wastewater is further subjected to strong oxidation comprehensive treatment by an electrocatalytic oxidation module and photolysis dechlorination, so that the high-efficiency comprehensive treatment of kitchen waste and black ash water is realized, and the sewage and wastewater reach the standard and are received outside the directly-discharged side or on the shore.
6. The kitchen waste and black ash water comprehensive treatment device has the outstanding advantages of high modularized integration, small occupied area, small system sludge discharge amount, excellent treatment effect, good operation stability, convenient operation and maintenance and the like. The comprehensive treatment device and the treatment process method can be provided without being influenced by personnel change on ships and ocean engineering platforms and the effect of flushing the toilet bowl by adopting a disinfectant when a toilet is cleaned, and under the development trend that the international society is more and more important in preventing the pollution of ship garbage and domestic sewage.
Drawings
FIG. 1 is a flow chart of a comprehensive treatment device for kitchen waste and black ash water for a ship;
in the figure, 100 parts of a black water vacuum pump station module, 101 parts of a vacuum pump unit, 102 parts of a vacuum pump unit, 103 parts of a vacuum pressure gauge, 104 parts of a vacuum pressure switch, 105 parts of a ball valve before a pump, 106 parts of a flexible connecting pipe, 107 parts of a vacuum pump, 108 parts of a buffer tank, 109 parts of a ball valve after the pump;
200. The spiral shell stacking machine comprises a spiral shell stacking machine module, a mixing tank, a 202, an input pipe, a 203, a spiral assembly main body, a 204, a driving motor, a 205, a water storage tank, a 206 and a mud discharging guide plate;
300. the device comprises a regulating water tank module, a regulating water tank body, a 302, an air supply unit, a 303, a liquid level floating ball switch, a 304, an aerator, a 305, a drainage unit, a 306, an air pump, a 307 and a crushing pump;
400. Pressurized dissolved air flotation module, 401, air flotation machine body, 402, flocculation unit, 403, dissolved air pump unit, 404, dissolved air tank unit, 405, mud pump unit, 406, water collecting unit, 407, air flotation contact area, 408, air flotation separation area, 409, mud collecting area, 410, dissolved air releaser, 411, dissolved air tank, 412, dissolved air water pump, 413, dissolved air water pipe, 414, mud pump, 415, water collecting pipe;
500. The device comprises an electrocatalytic oxidation module, 501, a circulating water tank, 502, an electrocatalytic oxidation assembly, 503, a clean water tank, 504, a treated water drainage unit, 505, a circulating water pump, 506, an air supply pipe, 507, an exhaust pipe, 508, a combustible gas detector, 509, an ultraviolet lamp, 510 and a discharge pump.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments.
The embodiment provides a kitchen waste and black ash water comprehensive treatment device and a treatment process method, wherein the kitchen waste and black ash water comprehensive treatment device comprises a black water vacuum pump station module A, a spiral shell stacking machine module B, a sewage and wastewater mixing adjusting water tank module C, a sewage and wastewater degreasing and desliming pretreatment pressurized dissolved air flotation module D, a sewage and wastewater strong oxidation comprehensive treatment electrocatalytic oxidation module E and an electric cabinet F which are connected in sequence.
The black water vacuum pump station module 100 is composed of two vacuum pump units which are arranged in parallel, and specifically comprises a first vacuum pump unit 101, a second vacuum pump unit 102 and a vacuum pipe system. The real-time pressure detection device of the vacuum pipe system comprises a vacuum pressure gauge 103 and a vacuum pressure switch 104 for setting working pressure. The vacuum pump unit is composed of a pump front ball valve 105, a flexible connection pipe 106, a vacuum pump 107, a flexible connection pipe 106, a pump rear ball valve 109, and a buffer tank 108, which are connected in this order. The ball valve on the vacuum pump unit is connected with a pipeline to perform pipeline flushing. Two groups of vacuum pump units, one for each and the other for each. The black water vacuum pump station module 100 is used to create a vacuum to deliver the black water collection to the regulating water tank module 300. The black water vacuum pump station module 100 is used for vacuum collection of black water, and the gravity flushing water amount of each person is reduced from 70L to 10L, so that water and energy can be effectively saved, the pipe diameter of a pipeline can be reduced, and the economical efficiency is good.
The spiral shell machine module 200 is formed by connecting a mixing tank 201, an input pipe 202, a spiral assembly main body 203, a driving motor 204, a water storage tank 205 and a mud discharge guide plate 206 which are connected in sequence. The driving motor 204 drives the screw shaft in the screw assembly main body 203 to rotate, kitchen waste flows into the input pipe 202 from the mixing tank and is conveyed into the screw assembly main body 203 to be concentrated and extruded, so that the sludge dewatering rate is not less than 75%, the dried sludge is greatly reduced in volume and can be filled into bags, and waste water falls into the water storage tank 205 and flows into the regulating water tank 301. The spiral shell stacking machine module 200 can effectively dehydrate and remove solid kitchen waste and sludge, the sludge drying rate can reach 75%, the volume and the quantity are greatly reduced, and meanwhile fermentation secondary pollution caused by wet waste storage is avoided.
The regulating water tank module 300 is composed of a regulating water tank body 301, kitchen wastewater, black water, grey water inlets and air vents arranged on the top of the tank body, an air supply unit 302, three low, medium and high liquid level floating ball switches 303 (LS 1, LS2 and LS 3) arranged on the side of the tank body, an aerator 304 arranged on the bottom side of the inside of the tank body and a drainage unit 305 arranged on the bottom side of the outside of the tank body. The air supply unit 302 is communicated with an aerator 304 at the bottom of the tank through an air supply pipeline sequentially by an air pump 306, a ball valve BV7, a check valve RV1, an air pressure gauge GPG1 and a stop valve GSV1, and air is supplied through an air pump AP1 and is aerated through the aerator 304, so that the mixed sewage and wastewater are rolled and fully stirred and mixed. The water draining unit 305 is communicated with the side bottom of the adjusting water tank 301, and sequentially comprises a ball valve BV8 before the pump, a flexible connecting pipe RC5, a crushing pump 307, a flexible connecting pipe RC6 and a ball valve BV9 after the pump, and the automatic starting and the automatic stopping of the crushing pump 307 are controlled through three liquid level floating ball switches 303 (LS 1, LS2 and LS 3) on the side of the tank, and the LS3 is activated to emit an audible and visual alarm when the tank is in a high position. The volume of the water tank 301 is adjusted to achieve the slow release of the sewage peak value and output the homogenized sewage to the water inlet of the pressurized dissolved air flotation module 400.
The pressurized dissolved air flotation module 400 is composed of an air flotation machine body 401, a flocculation unit 402, a dissolved air pump unit 403, a dissolved air tank unit 404, a sludge pump unit 405 and a water collecting unit 406 in sequence. Wherein, the air-float machine body 401 is provided with an air-float contact area 407, an air-float separation area 408 and a mud collecting area 409 from bottom to top. A dissolved air releaser 410 is arranged in the air floatation contact area 407 and is communicated with a dissolved air tank 411 outside the air floatation machine main body 401 through a pipeline, and is used for inputting dissolved air water and releasing micro bubbles. The flocculation unit 402 is composed of a flocculation tank body and a stirring paddle with a stirring motor, and is communicated with the air flotation machine main body 401 through a bottom pipeline. Through agitator motor D21 drive, drive the stirring paddle axle and rotate at a slow speed, fully mix PAC and PAM flocculation medicament and flow into in the air supporting machine body D1 from the bottom. The dissolved air pump unit 403 is connected out from the bottom side of the air flotation machine body 401 through a pipeline, and sequentially consists of a ball valve BV11 before the pump, a flexible connecting pipe RC7, a dissolved air pump 412, a flexible connecting pipe RC8 and a ball valve BV12 after the pump, and is communicated with the side of the dissolved air tank 411, and clear water is pressurized by a dissolved air pump DAPA and then conveyed into the dissolved air tank 411.
The air dissolving tank unit 404 is sequentially composed of an air dissolving tank 411, an air compressor AP2 connected with the tank, an air pressure gauge GPG2 on the tank top, a safety valve STV1 and a liquid level floating ball switch LS7 on the tank body, and is used for dissolving compressed air into air dissolving water in the tank to the greatest extent and connecting the compressed air into an air dissolving water pipe 413 in the air flotation machine body 401 through a tank bottom pipeline. The outlet of the sludge collecting area 409 at the top of the air flotation machine main body 401 is communicated with the sludge discharging unit 405, and sequentially consists of a ball valve BV14 before a pump, a flexible connecting pipe RC9, a sludge pump 414, a flexible connecting pipe RC10 and a ball valve BV15 after the pump, and the sludge in the sludge collecting area is conveyed into the mixing tank 201 of the spiral shell stacking machine module 200 for further dehydration and drying. The right side of the air flotation machine body 401 is provided with a water collecting unit 406, a water collecting pipe 415 in a tank water tank D61 is communicated with the air flotation machine body 401, the water collecting pipe 415 is arranged at the lower part in the air flotation machine body 401, pretreated water which is formed by separating floating mud from water and sinking floating mud slag is gathered into the water collecting tank D61, and overflows into a circulating water tank 501 in the electrocatalytic oxidation module 500 through a pipeline.
The electrocatalytic oxidation module 500 is sequentially composed of a circulating water tank 501, a circulating water delivery unit E2, an electrocatalytic oxidation assembly 502 (E3, E4, E5 and E6) with anode and cathode connecting cables communicated with a direct current power supply, a clean water tank 503 and a treated water drainage unit 504. The circulation water tank 501 and the clean water tank 503 are divided into two chambers by a partition plate, and are arranged at the lower sides of the electrocatalytic oxidation assemblies E3-E6. Wherein, the circulating water tank 501, the side of the tank body is provided with a sewage inlet after pretreatment, the top is provided with a seawater inlet and an air vent, the side of the tank body is provided with two liquid level float switches LS8 and LS9, and the bottom side of the circulating water tank 501 is provided with a circulating water outlet communicated with the circulating water delivery unit E2. The circulating water delivery unit is sequentially composed of a ball valve BV17 before a pump, a flexible connecting pipe RC11, a circulating water pump 505, a flexible connecting pipe RC12 and a ball valve BV18 after the pump, and the starting and the stopping of the circulating water pump 505 are controlled by low and medium liquid level floating ball switches LS8 and LS9 to be used for delivering circulating water. The water outlet pipe of the circulating water delivery unit E2 is communicated with the electrocatalytic oxidation assemblies E3-E6, in order to ensure that the sewage and wastewater are subjected to strong oxidation comprehensive treatment in the electrocatalytic oxidation assemblies E3-E6 and the temperature rise is in a controlled range, four groups of the electrocatalytic oxidation assemblies E3-E6 are connected in parallel, ball valves BV19, BV20, BV21 and BV22 are arranged on a water inlet pipeline of the assemblies, ball valves BV26, BV25, BV24 and BV23 are arranged on a water outlet pipeline, the pretreated sewage and wastewater is subjected to the electrocatalytic oxidation assemblies E3-E6 comprehensive treatment, all pollutants BOD5, COD, TSS and heat-resistant escherichia coli group indexes of the pretreated sewage and wastewater can meet the requirements, and the pH value of water quality is kept neutral. The clear water has higher residual chlorine index due to the presence of hypochlorous acid. The outlet pipes of the electrocatalytic oxidation assemblies E3-E6 are connected with the top of the clean water tank 503, and collect clean water into the clean water tank 503.
The clean water tank 503 is provided with a clean water input port and a strong exhaust pipeline, the strong exhaust pipeline comprises an air supply pipe 506 and an exhaust pipe 507, the initial end of the air supply pipe 506 is connected with an air pump, the tail end of the air supply pipe is connected with the clean water tank, the exhaust pipe 507 is connected to the top of the clean water tank, the waste gas concentration detection unit comprises a combustible gas detector 508, and the combustible gas detector is arranged on the exhaust pipe 507. The combustible gas detector 508 is used for detecting the concentration of the combustible gas hydrogen in the clean water tank in real time and feeding back to the control box, if the concentration value is lower than a set value, the gas is normally discharged, and if the concentration value is higher than the set value, the gas supply quantity is increased to reduce the concentration, so that the safety of the cabin environment is ensured.
The top side of the clean water tank 503 is provided with an overflow port, the side parts of the clean water tank 503 are provided with three liquid level floating ball switches LS10, LS11 and LS12, an ultraviolet lamp 509 is arranged in the clean water tank 503 for the photolysis dechlorination of clean water, and the bottom of the clean water tank 503 is provided with a treated water outlet which is communicated with a treated water drainage unit 504. The treated water discharge unit 504 is composed of a ball valve BV27 before pump, a flexible connection pipe RC13, a discharge pump 510, a flexible connection pipe RC14 and a ball valve BV28 after pump which are connected in sequence, and controls the start and stop of the treated water discharge pump DP1 and the high-level alarm through three liquid level switches LS10, LS11 and LS12 of low, medium and high so as to discharge qualified treated water. The treated water can be directly discharged outside the board or received by the bank.
The operation steps of the invention are as follows:
s1, the black water is vacuum-collected by the vacuum pump station module 100 and then is conveyed into the regulating water tank 301 of the regulating water tank module 300;
s2, kitchen waste and sludge enter a mixing tank 201 in a spiral stacking machine module 200 and flow into an input pipe 202, are driven by a driving motor 204, and are dehydrated along with spiral shaft spiral advance in a spiral assembly main body 203, so that dried sludge is discharged out of a bag through a sludge discharge guide plate 206 and falls into a water storage tank 205, and kitchen waste wastewater automatically flows into a regulating water tank 301 of a regulating water tank body module 300;
S3, after kitchen waste water, black water collected in vacuum, black water collected by gravity, kitchen grey water and black grey water transferred from a black grey water cabin are pumped into a water-regulating tank 301, an air source is provided through an air supply unit 302 and aeration is carried out through an aerator, so that the kitchen waste water, the black water and the grey water are fully mixed and homogenized, and quantitative conveying is carried out through a drainage unit 305 to a pressurized dissolved air floatation module 400; the sewage and wastewater enters the bottom side part of the air flotation machine main body 401 from the pressurized dissolved air flotation module 400, and enters a combined air flotation contact area after being subjected to effective flocculation reaction by flocculating agents PAC and PAM flowing into the flocculation unit 402, clear water is pressurized to 4.5-5 bar by the dissolved air water pump unit 403, gas in the dissolved air tank is greatly dissolved into water to reach a saturated state, the formed pressurized dissolved air water is depressurized and released by the dissolved air releaser 410 to generate a large number of micro bubbles, the suspended flocs in the water fully contact with the air flotation contact area, so that the suspended flocs in the sewage and wastewater adhere under the micro bubbles and float to the water surface along with the bubbles, the floating mud overflows to the mud collecting area through openings on the partition board and is discharged, the pretreated water with high-efficiency solid-liquid separation effect (such as BOD5, COD, TSS, chromaticity and the like can be simultaneously reduced) enters the water collecting tank D61 through the water collecting pipe 415, one part of the pretreated water is refluxed, the air flotation machine main body 401 is used, and the other part overflows from the water tank D61 to the electrocatalytic oxidation module 500, and the water quality can be obviously improved after the pretreatment and the water quality is oxidized.
S4, the pretreated sewage and wastewater is efficiently and comprehensively treated by the electrocatalytic oxidation module 500, the electrocatalytic oxidation assembly 502 directly degrades organic matters through insoluble anodes or hydroxyl free radicals with strong oxidation effect and hypochlorous acid and other intermediate substances generated by anode reaction to degrade the organic matters, and a series of chemical reactions, electrochemical processes or physical processes caused by the organic matters are carried out, so that the purpose of degrading and converting pollutants is achieved, the direct and indirect oxidative degradation way enables the organic matters to be decomposed more thoroughly, meanwhile, the reactor equipment is relatively simple, the occupied space is small, and the operation and the maintenance are convenient. Can effectively avoid secondary pollution. The clean water subjected to the strong oxidation treatment by the electrocatalytic oxidation assembly is also required to be subjected to ultraviolet light dechlorination in the clean water tank 503, and all water quality indexes BOD5, COD, TSS, heat-resistant escherichia coli groups, pH and residual chlorine of the treated water after dechlorination meet the emission limit requirement determined by International Maritime Organization (IMO) MPEC.227 (64) and are discharged through a treated water discharge unit E8 up to the standard. Electrocatalytic oxidation assembly
S5, under an emergency working condition, closing a water inlet valve on the pressurized dissolved air floatation module 400, and realizing emergency discharge of kitchen waste water and black ash water through a water discharge unit 305 at the bottom of the adjusting water tank body and an overflow port on the clean water tank.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
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| US7534357B2 (en) * | 2005-03-28 | 2009-05-19 | Navalis Environmental Systems, Llc | Dual-train wastewater reclamation and treatment system |
| CN204234454U (en) * | 2014-11-19 | 2015-04-01 | 中国人民解放军63691部队 | Boats and ships comprehensive treating system for life garbage |
| CN105236685A (en) * | 2015-10-28 | 2016-01-13 | 中国海洋石油总公司 | Zero-discharge treatment method for offshore-platform domestic sewage |
| CN109433802A (en) * | 2018-11-29 | 2019-03-08 | 中国船舶重工集团公司第七〇九研究所 | Ship and ocean platform kitchen garbage collection processing system implementing and method |
| CN111573912A (en) * | 2019-02-15 | 2020-08-25 | 广州伟烨船舶设备有限公司 | Comprehensive collecting and treating device and method for kitchen waste, domestic sewage and medical wastewater |
| CN213803301U (en) * | 2020-09-27 | 2021-07-27 | 中海油节能环保服务有限公司 | Offshore black water treatment process device based on black grey water quality-based treatment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN221217527U (en) * | 2023-10-24 | 2024-06-25 | 中船绿洲环保(南京)有限公司 | Marine kitchen garbage and black grey water integrated treatment device |
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