CN111517571A - Domestic sewage treatment method - Google Patents
Domestic sewage treatment method Download PDFInfo
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- CN111517571A CN111517571A CN202010352793.9A CN202010352793A CN111517571A CN 111517571 A CN111517571 A CN 111517571A CN 202010352793 A CN202010352793 A CN 202010352793A CN 111517571 A CN111517571 A CN 111517571A
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- contact oxidation
- domestic sewage
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- sewage treatment
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention discloses a domestic sewage treatment method, which is applied to domestic sewage treatment equipment, wherein the domestic sewage treatment equipment comprises a grid well, an adjusting tank, a hydrolysis acidification tank, a blower, a primary contact oxidation tank, a secondary sedimentation tank, a clean water tank, a sludge tank, a controller and an LED warning lamp, and the grid well, the adjusting tank, the hydrolysis acidification tank, the primary contact oxidation tank, the secondary sedimentation tank and the clean water tank are sequentially connected through sewage pipelines. The invention degrades the organic matter, has a certain function of denitrification and dephosphorization, has simple flow, high efficiency and convenience, utilizes the microorganism for degradation, does not need to additionally add a large amount of auxiliary agents, reduces the treatment cost, does not introduce new pollutants, can still maintain normal operation when the quality of the inlet water fluctuates greatly or the concentration of the pollutants is higher, is safe and reliable, reduces the pollution to the environment, is convenient to check and correct in time, and improves the treatment flow of the domestic sewage.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a domestic sewage treatment method.
Background
Domestic sewage is wastewater discharged in daily life of residents and mainly comes from residential buildings and public buildings, such as houses, institutions, schools, hospitals, shops, public places, industrial enterprise toilets and the like. The pollutants contained in the domestic sewage are mainly organic matters, such as protein, carbohydrate, fat, urea, ammonia nitrogen and the like, and the organic matters existing in the domestic sewage are extremely unstable and are easy to decay to generate stink. Bacteria and pathogens propagate in large quantities by taking organic matters in domestic sewage as nutrition, and can cause epidemic of infectious diseases. A large amount of domestic sewage is generated in cities every year, but people in rural areas have weak environmental awareness and lack facilities and methods for centralized treatment of the domestic sewage, so that a large amount of domestic sewage is directly discharged into rivers and lakes. The direct discharge of domestic sewage inevitably causes serious environmental pollution, the effluent after the treatment of the septic tank can not reach the national comprehensive discharge standard, and the removal rate of BOD5, COD and NH3-N is very low, so how to treat the domestic sewage becomes a technical problem to be urgently solved by technical personnel in the field.
Disclosure of Invention
In view of the above technical problems, the present invention aims to: provides a domestic sewage treatment method.
In order to achieve the purpose, the invention provides the following technical scheme:
is applied to a domestic sewage treatment device, the domestic sewage treatment device comprises a grid well, an adjusting tank, a hydrolysis acidification tank, an air blower, a first-stage contact oxidation tank, a second sedimentation tank, a clean water tank, a sludge tank, a controller and an LED warning light, the grid well, the adjusting tank, the hydrolysis acidification tank, the first-stage contact oxidation tank, the second sedimentation tank and the clean water tank are sequentially connected through a sewage pipeline, a three-dimensional elastic filler is arranged in the first-stage contact oxidation tank and the second-stage contact oxidation tank, a first sludge pipeline leading to the hydrolysis acidification tank is arranged at the bottom of the first-stage contact oxidation tank, a second sludge pipeline leading to the first-stage contact oxidation tank is arranged at the bottom of the second-stage contact oxidation tank, the air blower is used for conveying air to the bottoms of the first-stage contact oxidation tank and the second-stage contact oxidation tank, a third sludge pipeline leading to, the clean water tank is provided with a water outlet pipeline, a monitoring device is arranged in the water outlet pipeline and is connected with a controller, and the controller controls an LED warning lamp;
the sewage treatment method comprises the following steps:
(1) conveying domestic sewage to a grating well, and filtering by the grating well to remove large-particle pollutants;
(2) conveying the filtered domestic sewage to a regulating tank to homogenize water quality and water quantity;
(3) the domestic sewage automatically flows to a hydrolysis acidification tank, insoluble organic matters in the water are hydrolyzed into soluble organic matters by using hydrolytic bacteria and acidification bacteria, and denitrification is carried out under the action of anoxic and denitrifying bacteria;
(4) effluent of the hydrolysis acidification tank flows into the primary contact oxidation tank, the three-dimensional elastic filler in the primary contact oxidation tank provides a carrier for the attachment and growth of aerobic microorganisms, the air blower conveys air to the bottom of the primary contact oxidation tank to provide oxygen required by the growth and metabolism of the aerobic microorganisms, 70-80% of soluble organic pollutants in domestic sewage are removed under the adsorption action of the aerobic microorganisms, and part of generated sludge flows back to the hydrolysis acidification tank through the first sludge pipeline;
(5) the effluent of the primary contact oxidation tank flows into the secondary contact oxidation tank, aerobic microorganisms oxidize and decompose organic matters remaining in the domestic sewage, and part of generated sludge flows back to the primary contact oxidation tank through a second sludge pipeline;
(6) effluent of the secondary contact oxidation tank automatically flows into a secondary sedimentation tank for sedimentation separation, supernatant liquid flows into a clean water tank, and lower sludge enters a sludge tank;
(7) and adding a bactericide into the clear water tank, discharging the disinfected clear water through the water outlet pipeline, sampling and detecting the outlet water by a monitoring device in the water outlet pipeline every 20-60 minutes, and starting the LED warning lamp by the controller if the chemical oxygen demand exceeds a preset numerical range.
Preferably, the blower is a rotary fan, the air quantity ranges from 0.5 cubic meter per minute to 3 cubic meters per minute, and the pressure ranges from 15 kilopascals to 25 kilopascals.
Preferably, the first sludge pipeline and the second sludge pipeline respectively transmit returned sludge through a first screw pump and a second screw pump.
Preferably, the outlet pipe is provided with a valve, and the controller controls the valve to close if the chemical oxygen demand exceeds a predetermined value range.
Preferably, the LED warning lamp includes a buzzer.
Preferably, the reaction temperature of the step (3) is controlled to be 20-25 ℃, and the retention time is more than 20 hours.
Preferably, the reaction temperature in the step (4) is controlled to be 22 to 24 ℃.
Preferably, the sludge reflux ratio of the step (4) to the hydrolysis acidification tank is 50-80%.
Preferably, the hydrolysis acidification tank, the primary contact oxidation tank and the secondary contact oxidation tank are made of glass fiber reinforced plastics.
Preferably, the first and second aeration devices are respectively arranged at the bottom of the first and second contact oxidation ponds and are respectively connected with the blower through the first and second aeration pipelines.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the domestic sewage treatment method disclosed by the invention has the advantages that organic matters are degraded, a certain denitrification and dephosphorization function is realized, the process is simple, high-efficiency and convenient, the degradation is realized by using microorganisms, a large amount of auxiliary agents are not required to be additionally added, the treatment cost is reduced, new pollutants are not introduced, and the normal operation can be still maintained when the quality of inlet water fluctuates greatly or the concentration of the pollutants is high; set up monitoring devices and detect the play water, ensure the quality of play water, safe and reliable more, further reduce the pollution to the environment, use the LED warning light in time to discover the abnormal conditions more, conveniently in time investigate and revise, improved domestic sewage's processing procedure.
Drawings
The technical scheme of the invention is further explained by combining the accompanying drawings as follows:
FIG. 1 is a schematic view of a domestic sewage treatment method of the present invention.
Wherein: 1. a grid well; 2. a regulating tank; 3. a hydrolysis acidification pool; 4. a blower; 5. a primary contact oxidation tank; 6. a secondary contact oxidation pond; 7. a secondary sedimentation tank; 8. a clean water tank; 9. a sludge tank; 13. a first sludge line; 14. a second sludge line; 15. a third sludge line; 16. a water outlet pipeline; 17. a monitoring device; 18. a valve; 19. a first aeration device; 20. a second aeration device; 21. a first aeration line; 22. a second aeration line; 23. a first screw pump; 24. a second screw pump.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, it should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative concepts or reference to the normal use state of the product, and should not be considered as limiting. The following describes the implementation of the present invention in detail with reference to specific embodiments.
The invention discloses a domestic sewage treatment method which is applied to domestic sewage treatment equipment as shown in figure 1, the domestic sewage treatment equipment comprises a grid well 1, an adjusting tank 2, a hydrolysis acidification tank 3, a blower 4, a primary contact oxidation tank 5, a secondary contact oxidation tank 6, a secondary sedimentation tank 7, a clean water tank 8, a sludge tank 9, a controller and an LED warning lamp, the grid well 1 is used for filtering large-particle pollutants and preventing pipelines from being blocked, and the hydrolysis acidification tank 3, the primary contact oxidation tank 5 and the secondary contact oxidation tank 6 are made of glass fiber reinforced plastics, so that the domestic sewage treatment method is stable in performance and high in strength. Grid well 1, equalizing basin 2, hydrolysis-acidification tank 3, one-level contact oxidation pond 5, second grade contact oxidation pond 6, two heavy ponds 7 and clean water basin 8 pass through the sewer line and link to each other in proper order from beginning to end in proper order, install three-dimensional elastic filler in one-level contact oxidation pond 5 and the second grade contact oxidation pond 6 respectively, for the attached growth of aerobic microorganism provides the carrier, install aeration system below the three-dimensional elastic filler, provide the required oxygen of aerobic microorganism growth metabolism. Under the adsorption and decomposition effects of aerobic microorganisms, a large amount of soluble organic pollutants in the wastewater can be removed, the method has strong adaptability to impact load, the sludge production amount is small, sludge expansion is avoided, the operation is simple and reliable, and the effluent quality is ensured.
A first sludge pipeline 13 leading to the hydrolysis acidification tank 3 is installed at the bottom of the first-stage contact oxidation tank 5, and a second sludge pipeline 14 leading to the first-stage contact oxidation tank 5 is installed at the bottom of the second-stage contact oxidation tank 6, so that sludge backflow is facilitated, and certain suspended solid concentration is kept in the hydrolysis acidification tank 3 and the first-stage contact oxidation tank 5 to recover the adsorption capacity of the sludge. The first sludge line 13 and the second sludge line 14 transport the returned sludge by a first screw pump 23 and a second screw pump 24, respectively. The first screw pump 23 and the second screw pump 24 are slow in rotating speed, sludge flocs can be effectively protected, sludge blockage is basically avoided, the maintenance is simple, the efficiency is high, the operation is stable, and the sludge backflow is guaranteed to be smooth.
The blower 4 is used for conveying air to the bottoms of the primary contact oxidation pond 5 and the secondary contact oxidation pond 6, the bottoms of the primary contact oxidation pond 5 and the secondary contact oxidation pond 6 are respectively provided with a first aeration device 19 and a second aeration device 20, and the first aeration device 19 and the second aeration device 20 are respectively connected with the blower 4 through a first aeration pipeline 21 and a second aeration pipeline 22. The blower 4 is a rotary blower, the air quantity range is 0.5 cubic meter per minute to 3 cubic meters per minute, and the pressure range is 15 kilopascals to 25 kilopascals.
The bottom of the secondary sedimentation tank 7 is provided with a third sludge pipeline 15 leading to a sludge tank 9, and the sludge tank 9 is used for collecting the residual sludge generated by the secondary sedimentation tank 7 so as to reduce the water content of the sludge and reduce the volume of the sludge. The clear water tank 8 is used for collecting the supernatant of the secondary sedimentation tank 7, and bactericide can be added into the clear water tank for disinfection and sterilization. The clean water tank 8 is provided with a water outlet pipeline 16, a monitoring device 17 is arranged in the water outlet pipeline 16 and close to the clean water tank 8, a valve 18 is arranged on the water outlet pipeline 16 and far away from the clean water tank 8, the monitoring device 17 is connected with a controller, the controller controls an LED warning lamp and the valve 18, if the monitoring device 17 detects that the chemical oxygen demand exceeds a preset numerical range, the controller controls the valve 18 to be closed, the LED warning lamp gives a warning, and the clean water tank 8 stops water outlet.
The sewage treatment method of the embodiment comprises the following steps:
(1) firstly, conveying domestic sewage to a grating well 1, and filtering the domestic sewage through the grating well 1 to remove large-particle pollutants;
(2) conveying the filtered domestic sewage to a regulating tank 2, and homogenizing the water quality and the water quantity;
(3) the domestic sewage automatically flows to a hydrolysis acidification tank 3, insoluble organic matters in the water are hydrolyzed into soluble organic matters by using hydrolytic bacteria and acidification bacteria, denitrification is carried out under the action of anoxic and denitrifying bacteria, the reaction temperature is controlled to be 20-25 ℃, and the retention time is more than 20 hours;
(4) effluent of the hydrolysis acidification tank 3 automatically flows into a primary contact oxidation tank 5, the reaction temperature is controlled to be 22-24 ℃, a three-dimensional elastic filler in the primary contact oxidation tank 5 provides a carrier for the attachment and growth of aerobic microorganisms, an air blower 4 conveys air to the bottom of the primary contact oxidation tank to provide oxygen required by the growth and metabolism of the aerobic microorganisms, 70-80% of soluble organic pollutants in domestic sewage are removed under the adsorption action of the aerobic microorganisms, part of generated sludge flows back to the hydrolysis acidification tank 3 through a first sludge pipeline 13, and the sludge reflux ratio flowing back to the hydrolysis acidification tank is 50-80%;
(5) effluent of the primary contact oxidation tank 5 automatically flows into the secondary contact oxidation tank 6, aerobic microorganisms oxidize and decompose organic matters remaining in the domestic sewage, and part of generated sludge flows back to the primary contact oxidation tank 5 through a second sludge pipeline 14;
(6) effluent of the secondary contact oxidation tank 6 automatically flows into a secondary sedimentation tank for sedimentation separation, supernatant liquid flows into a clean water tank 8, and lower sludge enters a sludge tank 9;
(7) and adding a bactericide into the clean water tank 8, discharging the disinfected clean water through the water outlet pipeline 16, sampling and detecting the outlet water by the monitoring device 17 in the water outlet pipeline every 20-60 minutes, and if the chemical oxygen demand exceeds a preset numerical range, closing the valve 18 and starting the LED warning lamp by the controller. This LED warning light has bee calling organ, can in time produce the warning effect when taking place the abnormal conditions, reminds the purification situation of staff's sewage, solves the problem as early as possible, falls to the minimum harmful effects. If the water quality detection result is normal, the clean water in the clean water tank 8 is normally discharged.
The domestic sewage treatment method of the embodiment degrades organic matters, has a certain nitrogen and phosphorus removal function, is simple in process, efficient and convenient, utilizes microorganisms to degrade, does not need to additionally add a large amount of auxiliaries compared with a coagulating sedimentation method, an adsorption method, an oxidation method and the like, does not need to carry out dangerous solid waste treatment, reduces the treatment cost, does not introduce new pollutants to cause secondary pollution, has higher safety, and can still maintain normal operation when the quality of inlet water fluctuates greatly or the concentration of the pollutants is higher; set up monitoring devices 17 and detect the play water, ensure the quality of play water, safe and reliable more, further reduce the pollution to the environment, use the LED warning light unusual condition of discovery in time more, convenient in time investigation correction, domestic sewage's processing procedure has been improved, but wide application in residential quarter and rural domestic sewage handles, it is lower to replace the clearance, it can not reach national comprehensive emission standard's septic tank to go out water after the processing, the purifying effect to domestic sewage has been promoted greatly.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A domestic sewage treatment method is characterized in that: is applied to a domestic sewage treatment device, the domestic sewage treatment device comprises a grid well, an adjusting tank, a hydrolysis acidification tank, an air blower, a first-stage contact oxidation tank, a second sedimentation tank, a clean water tank, a sludge tank, a controller and an LED warning light, the grid well, the adjusting tank, the hydrolysis acidification tank, the first-stage contact oxidation tank, the second sedimentation tank and the clean water tank are sequentially connected through a sewage pipeline, a three-dimensional elastic filler is arranged in the first-stage contact oxidation tank and the second-stage contact oxidation tank, a first sludge pipeline leading to the hydrolysis acidification tank is arranged at the bottom of the first-stage contact oxidation tank, a second sludge pipeline leading to the first-stage contact oxidation tank is arranged at the bottom of the second-stage contact oxidation tank, the air blower is used for conveying air to the bottoms of the first-stage contact oxidation tank and the second-stage contact oxidation tank, a third sludge pipeline leading to, the clean water tank is provided with a water outlet pipeline, a monitoring device is arranged in the water outlet pipeline and is connected with a controller, and the controller controls an LED warning lamp;
the sewage treatment method comprises the following steps:
(1) conveying domestic sewage to a grating well, and filtering by the grating well to remove large-particle pollutants;
(2) conveying the filtered domestic sewage to a regulating tank to homogenize water quality and water quantity;
(3) the domestic sewage automatically flows to a hydrolysis acidification tank, insoluble organic matters in the water are hydrolyzed into soluble organic matters by using hydrolytic bacteria and acidification bacteria, and denitrification is carried out under the action of anoxic and denitrifying bacteria;
(4) effluent of the hydrolysis acidification tank flows into the primary contact oxidation tank, the three-dimensional elastic filler in the primary contact oxidation tank provides a carrier for the attachment and growth of aerobic microorganisms, the air blower conveys air to the bottom of the primary contact oxidation tank to provide oxygen required by the growth and metabolism of the aerobic microorganisms, 70-80% of soluble organic pollutants in domestic sewage are removed under the adsorption action of the aerobic microorganisms, and part of generated sludge flows back to the hydrolysis acidification tank through the first sludge pipeline;
(5) the effluent of the primary contact oxidation tank flows into the secondary contact oxidation tank, aerobic microorganisms oxidize and decompose organic matters remaining in the domestic sewage, and part of generated sludge flows back to the primary contact oxidation tank through a second sludge pipeline;
(6) effluent of the secondary contact oxidation tank automatically flows into a secondary sedimentation tank for sedimentation separation, supernatant liquid flows into a clean water tank, and lower sludge enters a sludge tank;
(7) and adding a bactericide into the clear water tank, discharging the disinfected clear water through the water outlet pipeline, sampling and detecting the outlet water by a monitoring device in the water outlet pipeline every 20-60 minutes, and starting the LED warning lamp by the controller if the chemical oxygen demand exceeds a preset numerical range.
2. The domestic sewage treatment method according to claim 1, wherein: the air blower is a rotary air blower, the air quantity range is 0.5 cubic meter per minute to 3 cubic meters per minute, and the pressure range is 15 kilopascals to 25 kilopascals.
3. The domestic sewage treatment method according to claim 1, wherein: and the first sludge pipeline and the second sludge pipeline respectively transmit returned sludge through the first screw pump and the second screw pump.
4. The domestic sewage treatment method according to claim 1, wherein: and a valve is arranged on the water outlet pipeline, and if the chemical oxygen demand exceeds a preset numerical range, the controller controls the valve to be closed.
5. The domestic sewage treatment method according to claim 1, wherein: the LED warning lamp comprises a buzzer.
6. The domestic sewage treatment method according to claim 1, wherein: the reaction temperature of the step (3) is controlled to be 20-25 ℃, and the retention time is more than 20 hours.
7. The domestic sewage treatment method according to claim 1, wherein: the reaction temperature of the step (4) is controlled to be 22-24 ℃.
8. The domestic sewage treatment method according to claim 1, wherein: and (4) the sludge reflux ratio of the sludge refluxed to the hydrolysis acidification tank in the step (4) is 50-80%.
9. The domestic sewage treatment method according to claim 1, wherein: the hydrolysis acidification tank, the first-stage contact oxidation tank and the second-stage contact oxidation tank are made of glass fiber reinforced plastics.
10. The domestic sewage treatment method according to claim 1, wherein: the bottom of the first-stage contact oxidation pond and the bottom of the second-stage contact oxidation pond are respectively provided with a first aeration device and a second aeration device, and the first aeration device and the second aeration device are respectively connected with the air blower through a first aeration pipeline and a second aeration pipeline.
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| CN202010352793.9A CN111517571A (en) | 2020-04-29 | 2020-04-29 | Domestic sewage treatment method |
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| CN202010352793.9A CN111517571A (en) | 2020-04-29 | 2020-04-29 | Domestic sewage treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028323A (en) * | 2022-07-08 | 2022-09-09 | 广东家怡生态环境股份有限公司 | High enriched sewage multi-stage treatment equipment |
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| CN205874161U (en) * | 2016-08-08 | 2017-01-11 | 温州腾骄环保科技有限公司 | Domestic sewage treatment system |
| CN205874065U (en) * | 2016-07-01 | 2017-01-11 | 山西省交通科学研究院 | Domestic sewage treatment device |
| CN208684693U (en) * | 2018-06-15 | 2019-04-02 | 广东熙霖节能环保工程咨询服务有限公司 | A kind of remote controlled intelligent integral slaughterhouse wastewater treatment equipment |
| CN208814843U (en) * | 2018-08-22 | 2019-05-03 | 重庆乐邦环保机电研究所有限公司 | Small-scale sewage integrated apparatus for rural domestic sewage treatment |
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2020
- 2020-04-29 CN CN202010352793.9A patent/CN111517571A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205874065U (en) * | 2016-07-01 | 2017-01-11 | 山西省交通科学研究院 | Domestic sewage treatment device |
| CN205874161U (en) * | 2016-08-08 | 2017-01-11 | 温州腾骄环保科技有限公司 | Domestic sewage treatment system |
| CN208684693U (en) * | 2018-06-15 | 2019-04-02 | 广东熙霖节能环保工程咨询服务有限公司 | A kind of remote controlled intelligent integral slaughterhouse wastewater treatment equipment |
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| CN115028323A (en) * | 2022-07-08 | 2022-09-09 | 广东家怡生态环境股份有限公司 | High enriched sewage multi-stage treatment equipment |
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Application publication date: 20200811 |