CN110734198A - rural distributed sewage treatment method - Google Patents
rural distributed sewage treatment method Download PDFInfo
- Publication number
- CN110734198A CN110734198A CN201911106311.5A CN201911106311A CN110734198A CN 110734198 A CN110734198 A CN 110734198A CN 201911106311 A CN201911106311 A CN 201911106311A CN 110734198 A CN110734198 A CN 110734198A
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- Prior art keywords
- water
- sewage
- collecting box
- washing water
- sewage treatment
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010865 sewage Substances 0.000 title claims abstract description 78
- 238000011282 treatment Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 140
- 239000002351 wastewater Substances 0.000 claims abstract description 26
- 238000005406 washing Methods 0.000 claims description 44
- 235000013311 vegetables Nutrition 0.000 claims description 28
- 230000007246 mechanism Effects 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 15
- 230000001954 sterilising effect Effects 0.000 claims description 15
- 238000003287 bathing Methods 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- 238000004062 sedimentation Methods 0.000 claims description 7
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 6
- 238000004851 dishwashing Methods 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 4
- 238000004659 sterilization and disinfection Methods 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 238000011221 initial treatment Methods 0.000 claims description 2
- 230000002550 fecal effect Effects 0.000 claims 2
- 239000013049 sediment Substances 0.000 claims 2
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- 230000002070 germicidal effect Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000002244 precipitate Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000008394 flocculating agent Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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
- C02F1/24—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
- 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
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- 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
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)
- Physical Water Treatments (AREA)
Abstract
The invention discloses rural distributed sewage treatment methods, which relate to the technical field of distributed sewage treatment, and are characterized in that domestic water in residents' homes is collected in a classified manner, the waste water which can be simply treated and recycled is recycled, the waste water which cannot be simply treated and recycled is intensively discharged into a waste water tank for centralized treatment, and the waste water is prevented from being directly discharged into the nature.
Description
Technical Field
The invention belongs to the technical field of distributed sewage treatment, and particularly relates to rural distributed sewage treatment methods.
Background
With the rapid development of the economy of China, the water consumption of residents living in a distributed manner and the ecological water consumption of hotels, farmhouses, lodging residents, inns and the like which are arranged in a distributed manner is increased rapidly, the sewage discharge amount is greatly increased, most of sewage is directly discharged without treatment, and the ecological deterioration of the water environment is increasingly intensified.
The distributed domestic sewage is mainly excrement and flushing water thereof, bath sewage, kitchen sewage and the like in the living process of residents, the existing distributed sewage treatment is to directly discharge the excrement and the flushing water thereof, the bath sewage, the kitchen sewage and the like into a waste water collecting tank and finish the treatment of the sewage through the treatment of the waste water collecting tank, however, part of domestic water which can be recycled through simple treatment is directly abandoned and directly discharged into a reaction tank, so that the workload of sewage treatment is increased, water resources cannot be reasonably utilized, and meanwhile, the water resources are wasted, and the distributed domestic sewage treatment is not beneficial to environmental protection.
Disclosure of Invention
The invention aims to provide rural distributed sewage treatment methods, which reduce the consumption of water resources in life by recycling the sewage in life and perform centralized treatment on the sewage, and solve the problems that the existing domestic sewage is directly discharged to cause increased damage to the environment, part of water cannot be recycled, the sewage treatment burden is increased, and the water resources are wasted.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to an rural distributed sewage treatment method, which comprises the following steps:
(1) the household washing water collecting box, the vegetable washing water collecting box, the bathing water collecting box and the excrement water collecting box are arranged in the scattered resident house;
(2) the washing water collecting box and the bathing water collecting box are communicated with the th sewage collecting box through water pipes, an automatic medicine dosing machine is arranged on the th sewage collecting box, and a stirring mechanism, a filtering structure and a sterilizing mechanism are arranged in the th sewage collecting box, so that the washing water and the bathing water are filtered, foam is removed, and the washing water and the bathing water are sterilized;
(3) the wash water and the bath water after the primary treatment are communicated with a toilet water tank through water pipes;
(4) a filtering structure, a stirring mechanism, an automatic pesticide-feeding machine and a sterilizing mechanism are arranged in the vegetable washing water collecting box, and the vegetable washing water in the vegetable washing water collecting box is filtered, sterilized and disinfected;
(5) guiding the treated vegetable washing water into a secondary water pool through a water pipe, wherein a water outlet of the secondary water pool is communicated with the th sewage collection box in the step (2) through a water pipe;
(6) the toilet drain outlet is communicated with the excrement water collecting box through a drain pipe, and the excrement water collecting box enters the wastewater collecting pool through a drain pipe;
(7) and wastewater enters the water inlet of the grid equipment through the water outlet of the wastewater collecting tank and enters the sewage centralized treatment center through the sewage discharge pipeline from the water outlet of the grid equipment.
, the washing water collecting box, the vegetable washing water collecting box, the bathing water collecting box and the excrement water collecting box are respectively communicated with a hand washing sink, a kitchen sink, a bathroom bathtub and a toilet drain outlet of a resident home through pipes.
, the kitchen sink is divided into a vegetable washing sink and a dish washing sink, and the water outlet of the dish washing sink is directly communicated with the excrement water collecting box through a sewage discharge pipe.
, the stirring mechanism in the th wastewater collection box is an air stirring device, and the th wastewater collection box is also provided with a slag scraper to remove scum and foam on the liquid surface of the air floatation tank.
, adding sodium hypochlorite powder into water by an automatic dosing machine in the vegetable washing water collecting box and the sewage collecting box, stirring for 10-20min by a mixing stirrer, then adding a flocculating agent into the water by the automatic dosing machine, precipitating for 30-40min, filtering out precipitates from the water in the sewage collecting box, discharging the precipitates for flushing a closestool, and filtering out precipitate cards from the water in the vegetable washing water collecting box for watering flowers and mopping the floor.
, the sterilizing mechanisms in the vegetable washing water collecting box and the sewage collecting box are ultraviolet sterilizing lamps or ozone generators for ultraviolet or ozone sterilization.
, the grid is a stepped grid with a gap of 4mm, and the particles and large-volume objects in the wastewater are intercepted by the grid and then are removed, and are dewatered by dewatering equipment and then are treated in a centralized manner.
, the central sewage treatment center filters, deposits, biologically treats, deposits, coagulates, deposits, and discharges the treated sewage after reaching standards.
, the sludge generated by said precipitation and secondary precipitation is filtered, concentrated, dewatered and landfilled or composted or incinerated.
The invention has the following beneficial effects:
the invention realizes the recycling of the waste water by installing different waste water collecting boxes aiming at water with different purposes in residents' homes living dispersedly in rural areas and simply treating the collected waste water, and performs centralized treatment on the discharged waste water, thereby not only reducing the consumption of water resources and being beneficial to environmental protection, but also reducing the generation amount of the waste water and the burden of waste water treatment.
Of course, it is not necessary that achieve all of the above-described advantages at the same time for any product that embodies the invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only partial embodiments of the present invention , rather than all embodiments.
The invention relates to an rural distributed sewage treatment method, which comprises the following steps:
(1) the household washing water collecting box, the vegetable washing water collecting box, the bathing water collecting box and the excrement water collecting box are arranged in the scattered resident house; the washing water collecting box, the vegetable washing water collecting box, the bathing water collecting box and the excrement water collecting box are respectively communicated with a hand washing sink, a kitchen sink, a bathroom bathtub and a closestool drainage port in a resident house through guide pipes; the kitchen sink divide into and washes the dish basin and the basin that washes the dishes, and the outlet in the basin that washes the dishes passes through the blow off pipe and directly communicates with excrement and urine water collecting box, and the simple processing cyclic utilization of the clean dish washing water that will contain more greasy dirt and other impurity washes the dish water because the processing procedure is more loaded down with trivial details, consequently direct discharge excrement and urine water collecting box centralized processing.
(2) The washing water collecting box and the bathing water collecting box are communicated with the th sewage collecting box through water pipes, the th sewage collecting box is provided with an automatic medicine dosing machine, and the th sewage collecting box is internally provided with a stirring mechanism, a filtering structure and a sterilizing mechanism for filtering, removing foams, sterilizing and disinfecting the washing water and the bathing water.
The stirring mechanism in the th sewage collecting box is an air stirring device, and a slag scraper is also arranged in the th sewage collecting box to remove scum and foams on the liquid level of the air floatation tank.
(3) And the primarily treated wash water and bath water are communicated with a toilet water tank through a water pipe.
(4) And a filtering structure, a stirring mechanism, an automatic pesticide-feeding machine and a sterilizing mechanism are arranged in the vegetable washing water collecting box, and the vegetable washing water in the vegetable washing water collecting box is filtered, sterilized and disinfected.
Sodium hypochlorite powder is added into water by an automatic dosing machine in the vegetable washing water collecting box and the th sewage collecting box, after the sodium hypochlorite powder is stirred by the mixing stirrer for about 10-20min, a flocculating agent is added into the water by the automatic dosing machine, after the flocculating agent is precipitated for 30-40min, water in the th sewage collecting box is filtered to remove precipitates which can be discharged for flushing a closestool, and water in the vegetable washing water collecting box is filtered to remove precipitate cards for watering flowers and mopping the floor, so that domestic water in a home is recycled, and the consumption of water resources is reduced.
(5) And (3) leading the treated vegetable washing water into a secondary water pool through a water pipe, wherein a water outlet of the secondary water pool is communicated with the th sewage collection box in the step (2) through a water pipe.
(6) The closestool sewage outlet is communicated with the excrement water collecting box through a sewage discharge pipe, and the excrement water collecting box enters the wastewater collecting tank through a drainage pipe.
(7) Wastewater enters a water inlet of the grid equipment through a water outlet of the wastewater collecting tank and enters a centralized sewage treatment center through a sewage discharge pipeline from the water outlet of the grid equipment, and the centralized sewage treatment center is common sewage treatment equipment in the prior art.
The grid chooses cascaded grid for use, and grid aperture 4mm, particulate matter and bulky object in the waste water are got rid of after the grid interception, concentrated processing behind dewatering equipment dehydration.
The sterilizing mechanisms in the vegetable washing water collecting box and the sewage collecting box are ultraviolet sterilizing lamps or ozone generators for ultraviolet or ozone sterilization.
The sewage centralized treatment center performs filtration, sedimentation, biological treatment, secondary sedimentation, coagulating sedimentation and filtration on the sewage, and the sewage after the filtration treatment reaches the standard and is discharged.
Sludge generated by precipitation and secondary precipitation is subjected to slurry filtration, slurry concentration and slurry dehydration and then is subjected to landfill treatment or retting or incineration, and resources are reasonably utilized.
In the description herein, reference to the term " embodiments," "examples," "specific examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least embodiments or examples of the invention.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1, rural distributed sewage treatment methods, characterized by, including the following steps:
(1) the household washing water collecting box, the vegetable washing water collecting box, the bathing water collecting box and the excrement water collecting box are arranged in the scattered resident house;
(2) the washing water collecting box and the bathing water collecting box are communicated with the th sewage collecting box through water pipes, an automatic medicine dosing machine is arranged on the th sewage collecting box, and a stirring mechanism, a filtering structure and a sterilizing mechanism are arranged in the th sewage collecting box, so that the washing water and the bathing water are filtered, foam is removed, and the washing water and the bathing water are sterilized;
(3) the wash water and the bath water after the primary treatment are communicated with a toilet water tank through water pipes;
(4) a filtering structure, a stirring mechanism, an automatic pesticide-feeding machine and a sterilizing mechanism are arranged in the vegetable washing water collecting box, and the vegetable washing water in the vegetable washing water collecting box is filtered, sterilized and disinfected;
(5) guiding the treated vegetable washing water into a secondary water pool through a water pipe, wherein a water outlet of the secondary water pool is communicated with the th sewage collection box in the step (2) through a water pipe;
(6) the toilet drain outlet is communicated with the excrement water collecting box through a drain pipe, and the excrement water collecting box enters the wastewater collecting pool through a drain pipe;
(7) and wastewater enters the water inlet of the grid equipment through the water outlet of the wastewater collecting tank and enters the sewage centralized treatment center through the sewage discharge pipeline from the water outlet of the grid equipment.
2. The decentralized sewage treatment methods in rural areas according to claim 1, wherein the washing water collection box, the vegetable washing water collection box, the bathing water collection box and the fecal water collection box are respectively connected to the hand sink, the kitchen sink, the bathroom bathtub and the toilet drain outlet in the resident's home through pipes.
3. The rural distributed sewage treatment methods of claim 2, wherein the kitchen sink is divided into a dish washing sink and a dish washing sink, and the water outlet of the dish washing sink is directly communicated with the fecal water collection tank through a sewage pipe.
4. The rural distributed sewage treatment method of claim 1, wherein the stirring mechanism in the th sewage collection box is an air stirring device, and a scum scraper is further installed in the th sewage collection box to remove scum on the liquid level of the floatation tank.
5. The rural distributed sewage treatment methods of claim 1, wherein the automatic dosing machine in the vegetable washing water collection box and sewage collection box adds sodium hypochlorite powder into the water, after the mixture is stirred by the mixer for about 10-20min, the automatic dosing machine further adds flocculant into the water, after 30-40min of sedimentation, the filtered sediment in the sewage collection box can be discharged for flushing a toilet, and the filtered sediment in the vegetable washing water collection box can be blocked for watering flowers and mopping the floor.
6. The rural distributed sewage treatment methods of claim 2, wherein the sterilization mechanisms inside the vegetable washing water collection tank and sewage collection tank are UV germicidal lamps or ozone generators for UV or ozone sterilization.
7. The rural distributed sewage treatment method of claim 1, wherein the grid is a stepped grid with 4mm gaps, particulate matters and large-volume objects in the wastewater are intercepted by the grid and then removed, and the wastewater is dewatered by dewatering equipment and then treated in a centralized manner.
8. The rural distributed sewage treatment methods of claim 1, wherein the central sewage treatment center performs filtration, sedimentation, biological treatment, secondary sedimentation, coagulation sedimentation, and filtration on the sewage, and the sewage is discharged after reaching standards.
9. The distributed rural sewage treatment methods of claim 8, wherein the sludge generated by said precipitation and secondary precipitation is filtered, concentrated, dewatered and landfilled or composted or incinerated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911106311.5A CN110734198A (en) | 2019-11-13 | 2019-11-13 | rural distributed sewage treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911106311.5A CN110734198A (en) | 2019-11-13 | 2019-11-13 | rural distributed sewage treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110734198A true CN110734198A (en) | 2020-01-31 |
Family
ID=69272796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911106311.5A Pending CN110734198A (en) | 2019-11-13 | 2019-11-13 | rural distributed sewage treatment method |
Country Status (1)
| Country | Link |
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| CN (1) | CN110734198A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113354119A (en) * | 2021-05-31 | 2021-09-07 | 江苏全心建设有限公司 | Rural domestic sewage treatment device |
| CN116813163A (en) * | 2023-07-24 | 2023-09-29 | 信和（天津）环保科技发展有限公司 | Dirty and sewage integrated treatment equipment of excrement |
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| CN2630329Y (en) * | 2003-06-05 | 2004-08-04 | 上海恒利广告有限公司 | Laminated treating reutilization system for domestic water not including fecal sewage |
| CN200996159Y (en) * | 2006-09-15 | 2007-12-26 | 张财福 | Dosmetic waste-water comprehensive utilizer in toilet |
| CN102926439A (en) * | 2012-11-09 | 2013-02-13 | 南京师范大学 | Resident housing living waste water treatment reused system |
| CN107628733A (en) * | 2017-11-01 | 2018-01-26 | 佛山杰致信息科技有限公司 | A kind of integrated rural domestic sewage processing method |
| CN110386705A (en) * | 2019-08-12 | 2019-10-29 | 金华极合环保技术咨询有限公司 | A kind of environmental protection sanitary sewage disposal recycling equipment |
-
2019
- 2019-11-13 CN CN201911106311.5A patent/CN110734198A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2630329Y (en) * | 2003-06-05 | 2004-08-04 | 上海恒利广告有限公司 | Laminated treating reutilization system for domestic water not including fecal sewage |
| CN200996159Y (en) * | 2006-09-15 | 2007-12-26 | 张财福 | Dosmetic waste-water comprehensive utilizer in toilet |
| CN102926439A (en) * | 2012-11-09 | 2013-02-13 | 南京师范大学 | Resident housing living waste water treatment reused system |
| CN107628733A (en) * | 2017-11-01 | 2018-01-26 | 佛山杰致信息科技有限公司 | A kind of integrated rural domestic sewage processing method |
| CN110386705A (en) * | 2019-08-12 | 2019-10-29 | 金华极合环保技术咨询有限公司 | A kind of environmental protection sanitary sewage disposal recycling equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113354119A (en) * | 2021-05-31 | 2021-09-07 | 江苏全心建设有限公司 | Rural domestic sewage treatment device |
| CN116813163A (en) * | 2023-07-24 | 2023-09-29 | 信和（天津）环保科技发展有限公司 | Dirty and sewage integrated treatment equipment of excrement |
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Application publication date: 20200131 |
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