CN113185057A - Pig slaughtering wastewater standard treatment equipment and operation method thereof - Google Patents
Pig slaughtering wastewater standard treatment equipment and operation method thereof Download PDFInfo
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- 239000002351 wastewater Substances 0.000 title claims abstract description 52
- 238000003307 slaughter Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000011272 standard treatment Methods 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 230000008569 process Effects 0.000 claims abstract description 16
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010865 sewage Substances 0.000 claims abstract description 8
- 239000010802 sludge Substances 0.000 claims description 22
- 230000007062 hydrolysis Effects 0.000 claims description 20
- 238000006460 hydrolysis reaction Methods 0.000 claims description 20
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 239000002957 persistent organic pollutant Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 238000004065 wastewater treatment Methods 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 241000894006 Bacteria Species 0.000 claims description 6
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 6
- 238000005273 aeration Methods 0.000 claims description 6
- 238000005188 flotation Methods 0.000 claims description 6
- 244000005700 microbiome Species 0.000 claims description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000005189 flocculation Methods 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 230000004060 metabolic process Effects 0.000 claims description 3
- 230000000813 microbial effect Effects 0.000 claims description 3
- 230000001546 nitrifying effect Effects 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 238000009300 dissolved air flotation Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 206010021143 Hypoxia Diseases 0.000 description 4
- 238000001471 micro-filtration Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000282887 Suidae Species 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000005416 organic matter Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 230000009278 visceral effect Effects 0.000 description 1
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
- C02F3/30—Aerobic and anaerobic processes
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses standard-reaching treatment equipment for pig slaughtering wastewater and an operation method thereof, and the standard-reaching treatment equipment comprises a water collecting tank, wherein a coarse grid is arranged on the left side of the inner wall of the water collecting tank, the right side of the water collecting tank is communicated with a cutting type submersible sewage pump, the right side of the cutting type submersible sewage pump is communicated with a micro-filter, the right side of the micro-filter is communicated with an adjusting tank through a pipeline, and the right side of the adjusting tank is communicated with an air floatation machine through a pump; the air floatation-anaerobic hydrolysis-anoxic-aerobic-MBR process is arranged, so that the problems that ammonia nitrogen cannot stably reach the standard, the operation requirement is high, the effluent cannot stably reach the standard after slaughter wastewater is treated, and the operation management level requirement is high in the common treatment process are solved.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to standard-reaching treatment equipment for pig slaughter wastewater and an operation method thereof.
Background
The pig slaughtering process can produce waste water, and the organic matter concentration of this type of waste water is higher, and the ammonia nitrogen concentration is high, and the emission is big. The main pollutants in the wastewater are blood dirt, fur, minced meat, visceral impurities, undigested food, excrement and urine and other pollutants in the slaughtering process, and the water is reddish brown and has obvious fishy smell, and if the water is directly discharged into a water body without being treated, the water body pollution is inevitably caused. At present, most domestic slaughter houses adopt an anaerobic-aerobic combined process, the process can degrade organic matters in wastewater well, but the ammonia nitrogen removal effect is not very stable, and the process management level requirement is higher, such as sludge expansion or sludge leakage in a secondary sedimentation tank are likely to occur due to poor management. Therefore, a treatment process with high treatment efficiency, stable treatment effect and easy operation and management is urgently needed.
Slaughtering wastewater is one of the largest organic pollution sources in China. According to investigation, the discharge amount of slaughter wastewater accounts for about 6% of national industrial wastewater discharge amount. Along with the development of economy and the improvement of the living standard of people, the meat food processing industry will have bigger development, and the pollution of slaughtering waste water has the trend of constantly aggravating, and the ammonia nitrogen of present common processing technology can not stably reach standard, and the operating requirement is high, and slaughtering waste water is after handling, and the play water can not stably reach standard, and the higher problem of operating management level requirement.
Disclosure of Invention
The invention aims to provide standard treatment equipment for pig slaughter wastewater and an operation method thereof, which have the advantages that the effluent of the slaughter wastewater after treatment reaches the standard, the requirement on the operation management level is not high, and the slaughter wastewater is convenient to popularize and apply, and solve the problems that ammonia nitrogen in the common treatment process cannot stably reach the standard, the operation requirement is high, the effluent of the slaughter wastewater after treatment cannot stably reach the standard, and the requirement on the operation management level is high.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a pig slaughtering wastewater treatment to reach standard equipment, includes the catch basin, thick grid is installed in the left side of catch basin inner wall, the right side intercommunication of catch basin has cutting formula stealthily dirty pump, the right side intercommunication of cutting formula stealthily dirty pump has the micro-filtration machine, there is the equalizing basin on the right side of micro-filtration machine through the pipeline intercommunication, there is the air supporting machine on the right side of equalizing basin through the pump intercommunication, there is the anaerobic hydrolysis tank on the right side of air supporting machine through the pump intercommunication, there is the oxygen deficiency pond in the left side of anaerobic hydrolysis tank through the pipeline intercommunication, there is good oxygen pond in the left side of oxygen deficiency pond through the pipeline intercommunication, good oxygen bottom of the pool portion is provided with micropore aeration dish, there is the MBR pond in the left side of good oxygen pond through the pipeline intercommunication, there is the ultraviolet virus killing frame in the left side of MBR pond through the pipeline intercommunication.
Preferably, a stirrer is installed at the top of the anoxic tank, a sludge tank is communicated between the air floatation machine and the MBR tank, and the MBR tank is communicated with the anaerobic hydrolysis tank through a pipeline.
Preferably, the grid gap of the coarse grid is 15mm, the screen gap of the micro-filter is 0.5mm, and the design load of the anaerobic hydrolysis tank is as follows: 4kgCOD/(m3 d).
Preferably, biological fillers are hung in the aerobic tank, the height of the fillers is 1/3-2/3 of the tank depth, a microporous aeration disc is arranged at the bottom of the aerobic tank, and the aerobic tank is designed to have a load: 0.05kgBOD5(m 3. d), and the mixed liquid at the tail end of the aerobic pool flows back to the anoxic pool through a pump, wherein the reflux ratio is as follows: 200-300%, the aerobic treatment system has high nitrification efficiency and sludge reflux ratio: 30-100 percent.
An operation method for standard treatment of pig slaughter wastewater comprises the following steps:
step 1: removing coarse substances in the wastewater through a coarse grid, and then feeding the wastewater into a water collecting tank;
step 2: the wastewater in the water collecting tank is lifted by a cutting type submersible sewage pump and enters a micro-filter;
and step 3: the effluent of the micro-filter flows into a regulating reservoir;
and 4, step 4: lifting the water in the regulating tank into an air floatation machine through a pump;
and 5: the effluent of the air flotation machine is lifted by a pump and enters an anaerobic hydrolysis tank;
step 6: the effluent of the anaerobic hydrolysis tank enters an anoxic tank;
and 7: the effluent of the anoxic tank enters an aerobic tank;
and 8: the effluent of the aerobic tank enters an MBR tank;
and step 9: MBR produced water is discharged after reaching the standard after being subjected to ultraviolet disinfection;
step 10: sludge generated by the air floatation machine and residual sludge discharged by the MBR tank are temporarily stored in the sludge tank.
Preferably, in the step 3, the water quality and the water quantity are uniform in the regulating tank, the air floatation machine with the retention time of the wastewater in the regulating tank being 20-24h adopts advection type dissolved air floatation and consists of a dosing reaction flocculation part, a pressurized dissolved air release part, an air floatation separation part, a slag scraping part and a water outlet regulating part.
Preferably, in the step 5, the anaerobic hydrolysis tank realizes pulse type water inflow through the pulse water distributor and the perforated water distribution pipe at the bottom of the tank, effluent flows out through the effluent weir around the upper part of the tank, and nitrate nitrogen in the reflux mixed liquid is converted into nitrogen under the action of denitrifying bacteria.
Preferably, in the step 7, organic matters in the wastewater are removed, ammonia nitrogen is converted into nitrate nitrogen, and the mixed solution in the aerobic tank flows back to the anoxic tank. The aerobic tank adopts a mud-film symbiotic mode, so that the total microbial quantity of the aerobic tank is increased.
Preferably, in step 7, the organic pollutants and microorganisms in the wastewater move and attach to the surface of the biological filler, the microorganisms attached to the filler degrade the organic pollutants and perform metabolism, growth, reproduction and other processes, and gradually form a thin biological film in a local area of the carrier, and the biological film has biochemical activity and can further adsorb and decompose the organic pollutants in the wastewater until a mature biological film completely wrapping the carrier is formed. Meanwhile, the mixed liquid flowing into the aerobic tank from the anoxic tank contains activated sludge with higher concentration, and the sludge with biochemical activity can also adsorb and decompose organic pollutants in the wastewater.
Preferably, in step 8, under the action of the MBR membrane, the MBR tank can maintain a high sludge concentration, and meanwhile, nitrifying bacteria can be completely trapped in the MBR tank, and the sludge is returned to the aerobic tank through the pump, so that the whole aerobic treatment system can maintain a high nitrification efficiency.
Compared with the prior art, the invention has the beneficial effects that: the air floatation-anaerobic hydrolysis-anoxic-aerobic-MBR process is arranged, so that the problems that ammonia nitrogen cannot stably reach the standard, the operation requirement is high, the effluent cannot stably reach the standard after slaughter wastewater is treated, and the operation management level requirement is high in the common treatment process are solved.
Drawings
FIG. 1 is a schematic view of the operation process of the present invention.
In the figure: 1. a water collecting tank; 2. coarse grating; 3. a cutting type submersible sewage pump; 4. a micro-filter; 5. a regulating tank; 6. an air flotation machine; 7. an anaerobic hydrolysis tank; 8. an anoxic tank; 9. an aerobic tank; 10. a microporous aeration disc; 11. an MBR tank; 12. an ultraviolet disinfection frame; 13. a blender; 14. a sludge tank.
Detailed Description
The present invention will now be described in more detail by way of examples, which are given by way of illustration only and are not intended to limit the scope of the present invention in any way.
The invention provides a technical scheme that: the utility model provides a pig slaughtering wastewater treatment equipment up to standard, including water collection tank 1, thick grid 2 is installed in the left side of water collection tank 1 inner wall, the right side intercommunication of water collection tank 1 has cutting formula stealthily dirty pump 3, the right side intercommunication of cutting formula stealthily dirty pump 3 has micro-filtration machine 4, there is equalizing basin 5 on the right side of micro-filtration machine 4 through the pipeline intercommunication, there is air supporting machine 6 on the right side of equalizing basin 5 through the pump intercommunication, there is anaerobic hydrolysis tank 7 on the right side of air supporting machine 6 through the pump intercommunication, there is oxygen deficiency pond 8 on the left side of anaerobic hydrolysis tank 7 through the pipeline intercommunication, there is good oxygen pond 9 on the left side of oxygen deficiency pond 8 through the pipeline intercommunication, good oxygen pond 9 bottom is provided with micropore aeration dish 10, there is MBR pond 11 on the left side of good oxygen pond 9 through the pipeline intercommunication, there is ultraviolet disinfection frame 12 on the left side of MBR pond 11 through the pipeline intercommunication.
An operation method for standard treatment of pig slaughter wastewater comprises the following steps:
step 1: removing coarse substances in the wastewater through a coarse grid, and then feeding the wastewater into a water collecting tank;
step 2: the wastewater in the water collecting tank is lifted by a cutting type submersible sewage pump and enters a micro-filter;
and step 3: the effluent of the micro-filter flows into a regulating reservoir;
and 4, step 4: lifting the water in the regulating tank into an air floatation machine through a pump;
and 5: the effluent of the air flotation machine is lifted by a pump and enters an anaerobic hydrolysis tank;
step 6: the effluent of the anaerobic hydrolysis tank enters an anoxic tank;
and 7: the effluent of the anoxic tank enters an aerobic tank;
and 8: the effluent of the aerobic tank enters an MBR tank;
and step 9: and (4) performing ultraviolet disinfection on MBR produced water and then discharging the water after reaching the standard.
Further, in step 3, the water quality and the water quantity are uniform in the regulating tank, the retention time of the wastewater in the regulating tank is 20-24 hours, and an air floatation machine adopts advection type dissolved air floatation and consists of a dosing reaction flocculation part, a pressurized dissolved air release part, an air floatation separation part, a residue scraping part and a water outlet regulating part.
Furthermore, in the step 5, the anaerobic hydrolysis tank realizes pulse type water inlet through the pulse water distributor and the perforated water distribution pipe at the bottom of the tank, effluent water flows out through the effluent weir at the periphery above the tank, and nitrate nitrogen in the backflow mixed liquid is converted into nitrogen under the action of denitrifying bacteria.
Further, in step 7, organic matters in the wastewater are removed, ammonia nitrogen is converted into nitrate nitrogen, and the mixed liquid in the aerobic tank flows back to the anoxic tank. The aerobic tank adopts a mud-film symbiotic mode, so that the total microbial quantity of the aerobic tank is increased.
Further, in step 7, the organic pollutants and microorganisms in the wastewater move and attach to the surface of the biological filler, the microorganisms attached to the filler degrade the organic pollutants and generate processes of metabolism, growth, reproduction and the like, and a thin biological film is gradually formed in a local area of the carrier, and the biological film has biochemical activity and can further adsorb and decompose the organic pollutants in the wastewater until a mature biological film completely wrapping the carrier is formed. Meanwhile, the mixed liquid flowing into the aerobic tank from the anoxic tank contains activated sludge with higher concentration, and the sludge with biochemical activity can also adsorb and decompose organic pollutants in the wastewater.
Further, in step 8, under the action of the MBR membrane, the MBR tank can keep a high sludge concentration, meanwhile, nitrifying bacteria can be completely retained in the MBR tank, and the sludge flows back to the aerobic tank through the pump, so that the whole aerobic treatment system is kept to have a high nitrification efficiency.
In summary, the following steps: according to the standard-reaching treatment equipment for the slaughter wastewater of the live pigs and the operation method thereof, the problems that ammonia nitrogen cannot stably reach the standard, the operation requirement is high, the effluent cannot stably reach the standard after the slaughter wastewater is treated, and the operation management level requirement is high are solved through an air floatation-anaerobic hydrolysis-anoxic-aerobic-MBR process (structure).
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a pig slaughtering wastewater treatment equipment up to standard, includes catch basin (1), its characterized in that: a coarse grid (2) is arranged on the left side of the inner wall of the water collecting tank (1), the right side of the water collecting tank (1) is communicated with a cutting type submersible sewage pump (3), the right side of the cutting type submersible sewage pump (3) is communicated with a micro-filter (4), the right side of the micro-filter (4) is communicated with an adjusting tank (5) through a pipeline, the right side of the adjusting tank (5) is communicated with an air floating machine (6) through a pump, the right side of the air floating machine (6) is communicated with an anaerobic hydrolysis tank (7) through a pump, the left side of the anaerobic hydrolysis tank (7) is communicated with an anoxic tank (8) through a pipeline, the left side of the anoxic tank (8) is communicated with an aerobic tank (9) through a pipeline, a microporous aeration disc (10) is arranged at the bottom of the aerobic tank (9), the left side of the aerobic tank (9) is communicated with an MBR tank (11) through a pipeline, the left side of the MBR tank (11) is communicated with an ultraviolet disinfection frame (12) through a pipeline.
2. The utility model provides a pig slaughtering wastewater treatment equipment up to standard which characterized in that: a stirrer (13) is installed at the top of the anoxic tank (8), and a sludge tank (14) is communicated between the air floatation machine (6) and the MBR tank (11).
3. The utility model provides a pig slaughtering wastewater treatment equipment up to standard which characterized in that: MBR pond (11) are linked together through the pipeline with anaerobic hydrolysis pond (7), thick grid (2) grid gap 15mm, microstrainer (4) screen cloth gap 0.5mm, anaerobic hydrolysis pond (7) design load: 4kgCOD/(m3 d).
4. The utility model provides a pig slaughtering wastewater treatment equipment up to standard which characterized in that: biological fillers are hung in the aerobic tank (9), the height of the fillers is 1/3-2/3 of the tank depth, a microporous aeration disc (10) is arranged at the bottom of the aerobic tank (9), and the aerobic tank (9) is designed with the load: 0.05kgBOD5(m 3. d), wherein the mixed liquor at the tail end of the aerobic pool (9) flows back to the anoxic pool (8) through a pump, and the reflux ratio is as follows: 200-300%, the aerobic treatment system has high nitrification efficiency and sludge reflux ratio: 30-100 percent.
5. An operation method for standard treatment of pig slaughter wastewater is characterized by comprising the following steps: the method comprises the following steps:
step 1: removing coarse substances in the wastewater through a coarse grid, and then feeding the wastewater into a water collecting tank;
step 2: the wastewater in the water collecting tank is lifted by a cutting type submersible sewage pump and enters a micro-filter;
and step 3: the effluent of the micro-filter flows into a regulating reservoir;
and 4, step 4: lifting the water in the regulating tank into an air floatation machine through a pump;
and 5: the effluent of the air flotation machine is lifted by a pump and enters an anaerobic hydrolysis tank;
step 6: the effluent of the anaerobic hydrolysis tank enters an anoxic tank;
and 7: the effluent of the anoxic tank enters an aerobic tank;
and 8: the effluent of the aerobic tank enters an MBR tank;
and step 9: and (4) performing ultraviolet disinfection on MBR produced water and then discharging the water after reaching the standard.
6. The standard-reaching treatment method of the pig slaughtering wastewater according to claim 1, characterized by comprising the following steps: in the step 3, the water quality and the water quantity are uniform in the regulating tank, the retention time of the wastewater in the regulating tank is 20-24h, and the air flotation machine adopts advection type dissolved air flotation and consists of a dosing reaction flocculation part, a pressurized dissolved air release part, an air flotation separation part, a residue scraping part and a water outlet regulating part.
7. The standard-reaching treatment method of the pig slaughtering wastewater according to claim 1, characterized by comprising the following steps: in the step 5, the anaerobic hydrolysis tank realizes pulse type water inflow through the pulse water distributor and the perforated water distribution pipe at the bottom of the tank, effluent flows out through the effluent weir at the periphery above the tank, and nitrate nitrogen in the backflow mixed liquid is converted into nitrogen under the action of denitrifying bacteria.
8. The standard-reaching treatment method of the pig slaughtering wastewater according to claim 1, characterized by comprising the following steps: in the step 7, organic matters in the wastewater are removed, ammonia nitrogen is converted into nitrate nitrogen, and the mixed liquid in the aerobic tank flows back to the anoxic tank. The aerobic tank adopts a mud-film symbiotic mode, so that the total microbial quantity of the aerobic tank is increased.
9. The standard-reaching treatment method of the pig slaughtering wastewater according to claim 1, characterized by comprising the following steps: in the step 7, the organic pollutants and microorganisms in the wastewater move and attach to the surface of the biological filler, the microorganisms attached to the filler degrade the organic pollutants and generate processes of metabolism, growth, reproduction and the like, and a thin biological film is gradually formed in a local area of the carrier, and the biological film has biochemical activity and can further adsorb and decompose the organic pollutants in the wastewater until a mature biological film completely wrapping the carrier is formed. Meanwhile, the mixed liquid flowing into the aerobic tank from the anoxic tank contains activated sludge with higher concentration, and the sludge with biochemical activity can also adsorb and decompose organic pollutants in the wastewater.
10. The standard-reaching treatment method of the pig slaughtering wastewater according to claim 1, characterized by comprising the following steps: in the step 8, under the action of the MBR membrane, the MBR tank can keep high sludge concentration, meanwhile, nitrifying bacteria can be completely retained in the MBR tank, and the sludge flows back to the aerobic tank through the pump, so that the whole aerobic treatment system is kept high in nitrification efficiency.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115611451A (en) * | 2022-10-10 | 2023-01-17 | 广东通朗环保科技股份有限公司 | Garbage wastewater treatment method |
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| WO2010075641A1 (en) * | 2008-12-31 | 2010-07-08 | Xu Shuiyuan | Apparatus for treating wastewater |
| CN109081523A (en) * | 2018-09-21 | 2018-12-25 | 江苏开放大学（江苏城市职业学院） | A kind of slaughterhouse wastewater treatment device and method |
| CN210103708U (en) * | 2019-06-11 | 2020-02-21 | 江苏省科建成套设备有限公司 | Advanced treatment device for slaughter wastewater |
| CN212770367U (en) * | 2020-09-27 | 2021-03-23 | 云南今业生态建设集团有限公司 | Slaughterhouse sewage treatment system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611451A (en) * | 2022-10-10 | 2023-01-17 | 广东通朗环保科技股份有限公司 | Garbage wastewater treatment method |
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