CN110921969A - Multifunctional sewage treatment device - Google Patents
Multifunctional sewage treatment device Download PDFInfo
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- CN110921969A CN110921969A CN201910679236.5A CN201910679236A CN110921969A CN 110921969 A CN110921969 A CN 110921969A CN 201910679236 A CN201910679236 A CN 201910679236A CN 110921969 A CN110921969 A CN 110921969A
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- sewage treatment
- water
- grid groove
- treatment device
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- 239000010865 sewage Substances 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000005192 partition Methods 0.000 claims abstract description 38
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims description 12
- 230000001954 sterilising effect Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005273 aeration Methods 0.000 claims description 3
- 244000052616 bacterial pathogen Species 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005191 phase separation Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000000855 fermentation Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Images
Classifications
-
- 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
- C02F1/30—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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
Landscapes
- 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)
- Biological Treatment Of Waste Water (AREA)
- Physical Water Treatments (AREA)
Abstract
The multifunctional sewage treatment device of the invention has the advantages that the internal cavity of the tank body 26 is divided into a first grid groove, a second grid groove, a third grid groove and a fourth grid groove in sequence by the three partition plates in the tank body, the bottom of the fourth grid groove 16 is provided with the water pump 17, and the drain pipe 5 of the water pump 17 is communicated with the first grid groove 25\ or the second grid groove 23. And a flow guide pipe is arranged in the first partition groove, so that the first grid groove has a three-phase separation function as a septic tank. The first grid groove is used as an anaerobic zone, the second grid groove is an anoxic zone, the third grid groove is an aerobic zone, and the fourth grid groove is a sedimentation zone, so that the space of the sedimentation tank is reduced, and the buried rural sewage treatment device is easy to manufacture, install and maintain. Realizes the anaerobic, anoxic, aerobic, dephosphorization and sedimentation filtration treatment of the sewage.
Description
Technical Field
The application relates to the technical field of sewage treatment, in particular to an integrated sewage treatment device with multiple functions.
At present, most rural areas in China have no perfect sewage collecting and treating facilities. A large amount of untreated sewage is directly discharged, which causes great pollution to sewage containing bodies and soil and seriously threatens the safety of underground water and the health of rural residents. Compared with urban sewage, rural domestic sewage contains a large amount of pollutants such as organic pollutants, suspended matters, nutritive substances such as nitrogen and phosphorus and the like, and has the characteristics of large change of water quality and water quantity, complex sewage type and the like. The urban sewage treatment technology has the characteristics of large construction investment, large occupied area, long construction period, complex operation management and the like, and is not suitable for treating rural sewage.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a multifunctional sewage treatment device which is simple in structure and low in cost, has a good degradation effect on pollutants such as organic pollution and total phosphorus in sewage, realizes treatment of domestic sewage until the domestic sewage reaches the standard and is discharged, and has the characteristics of small investment, small occupied area, low operation cost and the like.
The invention discloses a multifunctional sewage treatment device, which comprises a tank body, a water inlet pipe, a water outlet pipe, a controller, a first partition plate, a second partition plate and a third partition plate which are arranged in a cavity in the tank body at intervals, wherein the partition plate divides the cavity in the tank body into a first lattice groove, a second lattice groove, a third lattice groove and a fourth lattice groove in sequence, the lattice grooves are provided with sealing covers or sealing covers, the partition plates are provided with overflowing holes, the water inlet pipe is connected with the first lattice groove, and the water outlet pipe is connected with the fourth lattice groove, and the multifunctional sewage treatment device is characterized in that: the water pump is characterized in that a flow guide pipe is arranged in the first partition groove, a water inlet at the lower part of the flow guide pipe extends to a half position of a working water level, a water outlet at the upper part of the flow guide pipe is communicated with a flow passing hole formed in the first partition plate, a gap is formed in the lower part of the third partition plate, or a gap is formed in the lower part of the second partition plate, so that the third partition groove and the lower part of the fourth partition groove or the lower part of the second partition groove form a communicated state, a gap is formed in the upper part of the third partition plate, a water pump is arranged at the bottom in the fourth partition groove, a water discharge pipe of the water pump is communicated with the first partition groove or the second.
Preferably, the overflowing hole of the third partition plate is connected with a downward water inlet.
Preferably, the upper part of the fourth separating groove is provided with an ultraviolet sterilizing lamp or other sterilizing devices for killing harmful germs.
Preferably, a filtering device is arranged in the fourth separating groove, and filtered water is discharged from a water outlet pipe;
preferably, a detachable filler bracket is arranged in the second lattice groove \ or the third lattice groove \ or the first lattice groove, and a filler string floating in water is suspended on the filler bracket
Preferably, a heating device is arranged at the inner lower part of the first lattice groove or the second lattice groove
Preferably, the upper part of the fourth grid groove is provided with a COD \ or ammonia nitrogen \ or other water quality on-line tester, and the controller automatically displays or adjusts the operation parameters according to the detected numerical value.
The invention has the beneficial effects that: the three partition boards in the tank body divide the inner cavity into a first grid groove, a second grid groove, a third grid groove and a fourth grid groove, so that the first grid groove has the function of a septic tank as an anaerobic zone, the second grid groove is an anoxic zone, the third grid groove is an aerobic zone, and the fourth grid groove is a settling zone. Because be provided with the honeycomb duct in the first compartment, this honeycomb duct lower part water inlet stretches to the half position of working water level \ the discharge port intercommunication of crossing that sets up on upper portion delivery port and the first baffle, the jar body upper portion of first compartment is provided with the blast pipe, makes first check groove have the three-phase separation function as the septic tank, utilizes deposit promptly and anaerobic fermentation principle to get rid of the suspended organic matter in containing excrement and urine domestic sewage, discharges digestion gas from the blast pipe, mud sinks in the bottom, sewage flows to the second compartment from the honeycomb duct, and such separation has reduced the contact time of sewage with mud, makes two processes of acid fermentation and alkaline fermentation mutually noninterfere, and the existence of filler has increased the contact surface area of sewage mud and biological fungus simultaneously, has improved reaction efficiency greatly. The third clapboard or the lower part of the second clapboard is provided with a gap, so that the distribution of anaerobic bacteria, anoxic bacteria and aerobic bacteria can be automatically balanced. A gap is arranged at the upper part of the third clapboard, which is convenient for observing and placing parts.
And the bottom in the fourth separation tank is provided with a water pump, a drain pipe of the water pump is communicated with the first lattice groove or the second lattice groove, so that sludge sinking to the bottom can be sent back to the first lattice groove or the second lattice groove, the effect of the sedimentation tank of the fourth lattice groove is fully exerted, and the space of the sedimentation tank is reduced.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic view showing the construction of a sewage treatment apparatus according to the present invention;
in the figure: the device comprises a water inlet pipe 1, a sealing cover 2, a flow guide pipe 3, an overflowing hole 4, a drain pipe 5, a filler support 6, a filler ball 7, a second partition plate 8, a third partition plate overflowing hole 9, a water inlet 10, an ultraviolet sterilization lamp 11, a COD (chemical oxygen demand) or ammonia nitrogen or other water quality online tester 12, a water outlet pipe 13, a filtering device 14, a third grid groove 15, a third partition plate 16, a water pump 17, a gap 18, a third grid groove 19, an aeration device 20, a gap 21, a heating device 22, a second grid groove 23, a first partition plate 24, a first grid groove 25, a tank body 26 and a controller 27.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is the structural schematic diagram of the embodiment of the multifunctional sewage treatment device of AAO (anaerobic \ anoxic \ aerobic) process in the present application, which comprises a tank 26, a water inlet pipe 1, a water outlet pipe 13, a controller 27, and a first partition plate 24, a second partition plate 8 and a third partition plate 16 arranged in the internal cavity of the tank at intervals, wherein the internal cavity of the tank is sequentially divided into a first lattice groove 25, a second lattice groove 23, a third lattice groove 19 and a fourth lattice groove 15 by the partition plates, the lattice grooves are provided with sealing covers 2, the partition plates are provided with overflowing holes 4, the water inlet pipe 1 is connected to the first lattice groove 25, and the water outlet pipe 13 is connected to the fourth lattice groove 15, and the structural schematic diagram is characterized in that: a flow guide pipe 3 is arranged in the first separation groove 25, a water inlet at the lower part of the flow guide pipe 3 extends to a half position of a working water level, an upper water outlet is communicated with a flow passing hole 4 arranged on the first partition plate 24, a gap 18 is arranged at the lower part of the third partition plate 16, or a gap 21 is arranged at the lower part of the second partition plate, so that a third lattice groove 19 is communicated with a fourth lattice groove 15, or the lower part of the second lattice groove 23, a gap is arranged at the upper part of the third partition plate 16, a water pump 17 is arranged at the bottom in the fourth separation groove 15, a water discharge pipe 5 of the water pump 17 is communicated with the first lattice groove 25, or the second lattice groove 23, and a controller 27 is arranged beside or on the tank body 26. The power supply and the control circuit are convenient to connect. The space of the sedimentation tank is reduced, and the buried rural sewage treatment device is easy to manufacture, install and maintain.
Preferably, the overflowing hole 9 of the third partition plate 16 is connected with a downward water inlet 10 to facilitate sewage sedimentation.
Preferably, the upper part of the fourth separating groove 15 is provided with an ultraviolet sterilizing lamp 11\ or other sterilizing devices for killing harmful germs.
Preferably, a filtering device 14 is arranged in the fourth separating groove 15, and the filtered water is discharged from the water outlet pipe so as to meet the requirements of purified water recycling or higher requirements.
Preferably, the detachable filler support 6 is arranged in the second grid groove 23\ or the third grid groove 19\ or the first grid groove 25, and the filler string 7 floating in water is suspended on the filler support, so that the oxidation aeration effect is enhanced.
Preferably, the heating device 22 is arranged at the inner lower part of the first lattice groove 25\ or the second lattice groove 23\ so as to be convenient for use in winter and in cold regions.
Preferably, a COD \ or ammonia nitrogen \ or other water quality on-line tester 12 cavity system 27 is arranged at the upper part of the fourth grid groove 15 and automatically displays or adjusts the operation parameters according to the detected numerical value. The operation and management are convenient.
Therefore, the sewage treatment device with the septic tank function has reasonable structural arrangement, lower equipment manufacturing cost, small occupied area and low energy consumption, and is widely suitable for rural distributed sewage treatment. The sewage is treated by anaerobic treatment, anoxic treatment, aerobic treatment, dephosphorization treatment and sedimentation filtration in sequence, and the rural domestic sewage is converted into qualified water source to be discharged.
Claims (7)
1. The utility model provides a multi-functional sewage treatment plant, contains jar body 26, inlet tube 1, outlet pipe 13, controller 27 and interval and sets up first baffle 24, second baffle 8 and third baffle 16 in jar internal cavity, and the baffle of telling is split into first check groove 25, second check groove 23, third check groove 19 and fourth check groove 15 with jar internal cavity in proper order, perhaps be provided with sealed lid 2 on the check groove, all be provided with discharge orifice 4 on the baffle of telling, inlet tube 1 connects in first check groove 25, outlet pipe 13 connects in fourth check groove 15, its characterized in that: a flow guide pipe 3 is arranged in the first separation groove 25, a water inlet at the lower part of the flow guide pipe 3 extends to a half position of a working water level, an upper water outlet is communicated with a flow passing hole 4 arranged on the first partition plate 24, a gap 18 is arranged at the lower part of the third partition plate 16, or a gap 21 is arranged at the lower part of the second partition plate, so that a third lattice groove 19 is communicated with a fourth lattice groove 15, or the lower part of the second lattice groove 23, a gap is arranged at the upper part of the third partition plate 16, a water pump 17 is arranged at the bottom in the fourth separation groove 15, a water discharge pipe 5 of the water pump 17 is communicated with the first lattice groove 25, or the second lattice groove 23, and a controller 27 is arranged beside or on the tank body 26.
2. The multifunctional sewage treatment device according to claim 1, wherein: the overflow hole 9 of the third partition 16 is connected with a downward water inlet 10.
3. The multifunctional sewage treatment device according to claim 1, wherein: the upper part of the fourth separating groove 15 is provided with an ultraviolet sterilizing lamp 11\ or other sterilizing devices for killing harmful germs.
4. The multifunctional sewage treatment device according to claim 1, wherein: and a filtering device 14 is arranged in the fourth separating groove 15, and filtered water is discharged from a water outlet pipe.
5. The multifunctional sewage treatment device according to claim 1, wherein: the second grid groove 23\ or the third grid groove 19\ or the first grid groove 25 is internally provided with a detachable filler support 6, and a filler string 7 floating in water is suspended on the filler support, so that the oxidation aeration effect is enhanced.
6. The multifunctional sewage treatment device according to claim 1, wherein: the heating device 22 is arranged at the inner lower part of the first lattice groove 25\ or the second lattice groove 23\ respectively.
7. The multifunctional sewage treatment device according to claim 1, wherein: the upper part of the fourth grid groove 15 is provided with a COD \ or ammonia nitrogen \ or other water quality on-line tester 12, and the controller 27 automatically displays or adjusts the operation parameters according to the detected numerical value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910679236.5A CN110921969A (en) | 2019-07-25 | 2019-07-25 | Multifunctional sewage treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910679236.5A CN110921969A (en) | 2019-07-25 | 2019-07-25 | Multifunctional sewage treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110921969A true CN110921969A (en) | 2020-03-27 |
Family
ID=69856544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910679236.5A Withdrawn CN110921969A (en) | 2019-07-25 | 2019-07-25 | Multifunctional sewage treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110921969A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011129493A1 (en) * | 2010-04-13 | 2011-10-20 | Essa Co., Ltd. | Sewage treatment apparatus for buried type tank |
| CN204125300U (en) * | 2014-09-19 | 2015-01-28 | 广西益江环保科技有限责任公司 | A kind of purification tank for the treatment of dispersion type domestic wastewater |
| CN104512963A (en) * | 2014-11-29 | 2015-04-15 | 北京工业大学 | Integral multistage simultaneous nitrification and denitrification biological membrane system denitrification method and device |
| CN204550204U (en) * | 2015-04-10 | 2015-08-12 | 浙江爱迪曼环保科技股份有限公司 | Sanitary sewage one-body simplified formula treatment facility |
| CN206069515U (en) * | 2016-09-06 | 2017-04-05 | 山东文远建材科技股份有限公司 | For the bioreactor of sewage disposal |
| CN206289143U (en) * | 2016-11-24 | 2017-06-30 | 保山益佰工贸有限责任公司 | A kind of sewage treatment unit of dynamic glass-reinforced plastic material |
| CN107265816A (en) * | 2017-07-26 | 2017-10-20 | 广州市卓冠环保科技有限公司 | A kind of height processing septic tank |
| CN206680261U (en) * | 2017-04-26 | 2017-11-28 | 陕西朗正环保科技有限公司 | A kind of centralized sewage treatment unit |
| CN206858379U (en) * | 2017-07-03 | 2018-01-09 | 江门市三清环境技术工程有限公司 | A kind of efficient anaerobic integrated treatment unit of domestic sewage in rural areas |
| CN109809642A (en) * | 2019-03-21 | 2019-05-28 | 周鼎力 | A kind of remodeling purification tank of multi-stage aerobic processing rural households' sewage |
| CN211198935U (en) * | 2019-07-25 | 2020-08-07 | 重庆潜灵科技有限公司 | Multifunctional sewage treatment device |
-
2019
- 2019-07-25 CN CN201910679236.5A patent/CN110921969A/en not_active Withdrawn
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011129493A1 (en) * | 2010-04-13 | 2011-10-20 | Essa Co., Ltd. | Sewage treatment apparatus for buried type tank |
| CN204125300U (en) * | 2014-09-19 | 2015-01-28 | 广西益江环保科技有限责任公司 | A kind of purification tank for the treatment of dispersion type domestic wastewater |
| CN104512963A (en) * | 2014-11-29 | 2015-04-15 | 北京工业大学 | Integral multistage simultaneous nitrification and denitrification biological membrane system denitrification method and device |
| CN204550204U (en) * | 2015-04-10 | 2015-08-12 | 浙江爱迪曼环保科技股份有限公司 | Sanitary sewage one-body simplified formula treatment facility |
| CN206069515U (en) * | 2016-09-06 | 2017-04-05 | 山东文远建材科技股份有限公司 | For the bioreactor of sewage disposal |
| CN206289143U (en) * | 2016-11-24 | 2017-06-30 | 保山益佰工贸有限责任公司 | A kind of sewage treatment unit of dynamic glass-reinforced plastic material |
| CN206680261U (en) * | 2017-04-26 | 2017-11-28 | 陕西朗正环保科技有限公司 | A kind of centralized sewage treatment unit |
| CN206858379U (en) * | 2017-07-03 | 2018-01-09 | 江门市三清环境技术工程有限公司 | A kind of efficient anaerobic integrated treatment unit of domestic sewage in rural areas |
| CN107265816A (en) * | 2017-07-26 | 2017-10-20 | 广州市卓冠环保科技有限公司 | A kind of height processing septic tank |
| CN109809642A (en) * | 2019-03-21 | 2019-05-28 | 周鼎力 | A kind of remodeling purification tank of multi-stage aerobic processing rural households' sewage |
| CN211198935U (en) * | 2019-07-25 | 2020-08-07 | 重庆潜灵科技有限公司 | Multifunctional sewage treatment device |
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Application publication date: 20200327 |
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