CN112554301A - On-line wind-drawing-on-site gravity sewage-discharging suction and sewage-discharging method and device - Google Patents
On-line wind-drawing-on-site gravity sewage-discharging suction and sewage-discharging method and device Download PDFInfo
- Publication number
- CN112554301A CN112554301A CN202011395303.XA CN202011395303A CN112554301A CN 112554301 A CN112554301 A CN 112554301A CN 202011395303 A CN202011395303 A CN 202011395303A CN 112554301 A CN112554301 A CN 112554301A
- Authority
- CN
- China
- Prior art keywords
- gravity
- sewage
- container
- waste water
- combination
- Prior art date
- 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.)
- Pending
Links
- 230000005484 gravity Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000007599 discharging Methods 0.000 title claims description 34
- 239000010865 sewage Substances 0.000 claims abstract description 63
- 239000002351 wastewater Substances 0.000 claims abstract description 56
- 238000003860 storage Methods 0.000 claims abstract description 22
- 230000013872 defecation Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 230000003111 delayed effect Effects 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 description 11
- 238000011010 flushing procedure Methods 0.000 description 9
- 210000003608 fece Anatomy 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000010871 livestock manure Substances 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000003287 bathing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
- E03F1/006—Pneumatic sewage disposal systems; accessories specially adapted therefore
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
A suction and sewage discharge method for on-line draught-local gravity sewage discharge comprises a container connected with a sewage discharge port of a toilet stool, wherein the bottom of the container is provided with a normally closed sewage discharge port which can be opened by the gravity of waste water generated by one-time defecation, the sewage discharge port is connected with a waste water storage tank which is arranged on the local, the top of the container is provided with a draught combination, and the draught combination is opened for a short time to form negative pressure in the container, so that the waste water in the toilet stool can be driven to be discharged to the waste water storage tank through the container.
Description
One, the technical field
The invention belongs to the technical field of environmental sanitation, and particularly relates to a suction and pollution discharge method and device for online air draft-local gravity pollution discharge.
Second, technical background
Suction pollution discharge is sometimes also called indoor vacuum pollution discharge, vacuum source separation pollution discharge and negative pressure source separation pollution discharge, is a sanitary discharge mode for connecting user end sanitary wares such as toilet bowls and the like to a suction pipeline, and is mainly used for an environmental sanitation system for cleaning the sanitary wares such as the toilet bowls and the like by using a small amount of water and realizing high-concentration discharge and collection of sanitary wastes. The sanitary waste water is particularly used for discharging sanitary waste, and the sanitary waste comprises excrement and kitchen waste but does not comprise washing waste water of bathing, washing, kitchen rinsing and the like. The suction sewage disposal of the present invention includes a process of transferring sanitary wastewater from an indoor sanitary fixture to a storage, discharge or disposal utilization site at the end of the system, but does not include the storage, discharge or disposal utilization process at the end. When the pressure in the suction pipeline is lower than the external atmospheric pressure, the toilet bowl is communicated with the suction pipeline, and waste water in the toilet bowl is sucked into the suction pipeline and conveyed to the far end, so that the sanitary discharge function is realized. Compared with the conventional water flushing type sanitary discharge method for realizing pipeline transportation by relying on hydraulic self-weight, the suction pipeline discharge has the advantages of water saving, energy saving and consumption reduction, and particularly can realize low dilution collection of sanitary wastes such as excrement and urine, and creates favorable conditions for subsequent resource treatment and utilization.
The prior art suction sewage method generally requires constructing a suction pipe system consisting of pipes, a storage container, an interface valve and a vacuum pump, etc., which are normally at a pressure lower than the external atmospheric pressure, i.e., maintain a so-called vacuum or negative pressure, wherein the interface valve and the vacuum pump form a boundary between the suction pipe system and the external atmospheric pressure environment, and the vacuum pump also provides a power for forcibly exhausting the gas, etc., inside the suction pipe system out of the suction pipe system to maintain the pressure inside the system lower than the atmospheric pressure. Such a system has several features: (1) the requirement on sealing is high, the air leakage phenomenon is light, the energy is wasted, and the system is disabled; (2) waste and wastewater directly flows from a sanitary appliance (atmospheric pressure environment) at a user end to a facility (atmospheric pressure environment) at a collection end for storage, treatment or utilization, and only passes through a suction pipeline system (negative pressure environment) in the middle; (3) additional measures are taken to transfer waste water from the sub-atmospheric environment to the atmospheric pressure environment at the collection end, such as breaking the sub-atmospheric pressure or using a high-lift dredge pump to force waste water in the suction line out of the sub-atmospheric environment. Therefore, the existing suction pollution discharge method has the defects in practical application: (1) the requirement on a vacuum pump station is higher, and the construction and operation cost of the pump station is increased; (2) the sealing requirement on the suction pipeline is high, and the cost of laying and maintaining the pipeline is increased; (3) the sanitary appliance at the user end needs to be connected with the suction pipeline through a special sewage interface valve, and therefore, the special sanitary appliance needs to be used at the user end; (4) since a high negative pressure is usually maintained in the suction line, a strong suction noise is generated at the moment when the user opens the waste interface valve, which affects the user experience. When the above method is applied to a scene such as a rural sanitation, the cost of centrally located suction pumping stations and suction piping systems is particularly high due to the decentralised rural habitation.
Third, the invention
The invention provides a suction and pollution discharge method for on-line pipeline wind-drawing-in-place gravity pollution discharge, which comprises the following steps: (1) the whole process of suction and pollution discharge is divided into two steps of indoor discharge and outdoor collection, wherein the indoor discharge refers to the process of discharging sanitary wastewater from indoor sanitary wares to living places through pipelines, the outdoor collection refers to the process of further transferring the sanitary wastewater discharged to the outdoor to centralized storage, treatment or utilization facilities, and the outdoor collection process does not need to be considered when the sanitary wastewater discharged to the outdoor is discharged, treated or utilized on site; (2) the sanitary wastewater in the indoor sanitary ware is transferred to the outdoor by an on-line wind-drawing-on-site gravity sewage discharge method; (3) the sanitary wastewater transferred to the outdoor is discharged, treated or utilized on site, or the waste wastewater transferred to the outdoor is further transported to a centralized discharge, treatment or utilization site by means of pipelines or vehicles.
The principle of on-line air-drawing-in-situ gravity sewage discharge is that an air-drawing combination communicated with an atmospheric pressure environment is arranged on an indoor sewage discharge pipeline, the indoor sewage discharge pipeline is a pipeline system connected with an indoor sanitary appliance and an outdoor discharge, treatment, utilization or further transfer place, instantaneous negative pressure is generated in the indoor sewage discharge pipeline through the air-drawing combination, waste and wastewater in a toilet stool is sucked into the pipeline, then air-drawing is stopped, and the waste and wastewater is discharged from the pipeline under the action of gravity, and the specific implementation method is as follows:
1. constructing an on-line draught-gravity sewage unloader, wherein the on-line draught-gravity sewage unloader comprises a container meeting certain volume requirements, the top of the container is provided with a draught combination, when the draught combination is opened, the air in the container is exhausted to an atmospheric pressure environment, the bottom of the container is provided with a gravity sewage unloading combination, the gravity sewage unloading combination comprises a normally closed valve, when the pressure in the container is equal to or less than the external atmospheric pressure, the gravity sewage unloading combination is in a closed state, the external air cannot freely enter the container, when sanitary wastewater generated by one-time discharge is injected into the container, the gravity sewage unloading combination is opened under the gravity action of the sanitary wastewater, and the sanitary wastewater leaves the container under the self-weight action; the middle part of the container is provided with a water inlet which is used for being connected with indoor sanitary ware to be discharged.
1-1 is determined according to the amount of waste water produced by a defecation, and is preferably set to be 3-5 times of the volume of sanitary waste water produced by a defecation.
1-2, the method for selecting the type of the draft combination is to recommend that the negative pressure formed in the container is 5-30 kilopascals (lower than the external atmospheric pressure) when the draft combination is continuously operated.
2. A waste reservoir is provided adjacent the building for receiving sanitary waste water discharged from the room, said waste reservoir being provided in combination with a container for discharging, treating, utilizing or transferring the waste water which is provided on site.
3. The on-line wind-drawing-gravity sewage discharger is arranged on a pipeline connecting the indoor sanitary ware and the waste water storage tank, the water inlet of the on-line wind-drawing-gravity sewage discharger is connected with the water outlet of the sanitary ware to be discharged, and the outlet of the gravity sewage discharging combination is arranged above the water inlet of the waste water storage tank. The method of arranging the on-line draft-gravity sewage unloader and the waste water storage tank must ensure that the waste water in the container can fall into the waste water storage tank by gravity when the gravity sewage-unloading combination is opened. Preferably, the on-line wind-drawing gravity sewage discharging device is arranged in such a way that if the sanitary appliance to be discharged is a water-flushing type sanitary appliance, such as a water-flushing toilet or a water-flushing type kitchen garbage disposer, the generated sanitary wastewater can flow into the container in a gravity-gravity flow mode.
4. After the sanitary ware is used, the user opens the air draft combination to form negative pressure in the container, waste water in the toilet is sucked into the container, the air draft combination is closed, and the waste water is discharged out of the container through the gravity dirt discharge device under the action of the self gravity. In practical application, the indoor pollution discharge process can be finished at the moment of opening the draft combination, so that the draft combination can be normally set to be automatically closed in a delayed manner after being opened.
4-1, the recommended time length of the time delay is 0.3-1 second, and is properly prolonged along with the lengthening of the distance between the on-line wind-drawing gravity sewage discharger and the indoor sanitary ware and the increasing of the amount of the discharged waste water.
4-2 further, the opening and closing of said draft combination can be integrated with the operation of the sanitary ware (such as water cleaning) into an integrated program control.
5. Further, the sanitary ware connected with the on-line draft-gravity sewage drainer has two sewage draining operation modes, wherein one sewage draining operation mode is to drain sewage by negative pressure generated by operating the draft combination, the toilet bowl can be cleaned by only using little cleaning water (usually < 1.5 liters/time), and the other sewage draining operation mode is to add a large amount of flushing water (usually > < 3 liters/time) into the toilet bowl without operating the draft combination, and sewage draining is performed by the flushing force formed in the pipeline by the hydraulic self-weight. The former method can achieve the effect of low dilution sewage disposal, and the latter method is equivalent to the common water-flushing gravity sewage disposal and is recommended to be used only under specific conditions (such as the failure of an on-line draft combination).
An on-line air-draft-gravity sewage discharging device used for the method of the invention is shown in the attached drawing and comprises a feed inlet 2, an air-draft combination 3, a container 4 and a gravity sewage discharging combination 5, wherein the feed inlet 2 is arranged in the middle of the container 4, the gravity sewage discharging combination 5 is arranged at the bottom of the container 4, the gravity sewage discharging combination 5 is normally closed, after waste water generated by one-time defecation enters the container 4, the gravity sewage discharging combination 5 can be ensured to be opened under the gravity action of the waste water and discharge the waste water from the container 4, the air-draft combination 3 is arranged at the top of the container 4, and when the air-draft combination is opened, the air in the container can be discharged to the external atmospheric environment. The using method of the device of the invention is that the feeding hole 2 is connected with the sewage outlet of the toilet, the outlet of the gravity sewage discharging combination is arranged above the feeding hole of the waste water storage tank, when the waste water is required to be discharged from the toilet, the air draft combination is opened, and when the waste water in the toilet is discharged, the air draft combination is closed.
Further, the gravity sewage discharge combination can be realized by adopting a movable door and a balancing weight.
Description of the drawings
Fig. 1 is a drawing of an on-line wind-drawing-in-place gravity sewage-discharging suction and sewage-discharging device.
1-sanitary ware, 2-feeding port, 3-draft combination, 4-container, 5-gravity dirt remover and 6-storage tank implementation effect:
(1) the conventional vacuum pump station and the transfer system which are complex and have high technical requirements are replaced, and the technical difficulty and the cost of implementation are greatly reduced;
(2) the sanitary ware can have two sanitary discharge modes, and the influence on the life of a user when a suction system fails is avoided.
Fifth, the detailed description
1. The method of the invention is used for establishing an environmental sanitation system for single peasant household to be treated and utilized on site, and the indoor toilet stool adopts the conventional water flushing toilet stool
(1) The three-grid septic tank is arranged outdoors and on site, and the method and the technical requirements for arranging the three-grid septic tank refer to relevant technical standards; (2) an online draught-gravity sewage discharging device is arranged above a feed inlet of the septic tank; (2) the water inlet of the on-line draught-gravity sewage discharging device is connected with a sewage outlet of the indoor water flushing toilet stool; (3) the liquid outlet of the septic tank and the cleaned manure residues are applied to the land owned by the peasant household.
2. Environmental sanitation system for centralized village processing and utilization established by applying method of the invention
The indoor toilet bowl adopts a pumping toilet bowl, and the on-line air-drawing-gravity sewage unloader is arranged on the outer wall surface of a house adjacent to the toilet bowl. Two septic tanks are arranged outside the room adjacent to the toilet in each house, the hydraulic retention time of the first septic tank is 20 days, and the hydraulic retention time of the second septic tank is 10 days. The discharge port of the on-line air-drawing-gravity sewage discharging device is connected with the feed inlet of the septic tank by a pipeline, and the hydraulic gradient of the pipeline is not less than 5 per thousand. A centralized manure storage tank is arranged outside the village, and the hydraulic retention time of the centralized manure storage tank is designed to be 30 days. The liquid outlet of each household septic tank is conveyed to a liquid storage tank which is arranged in a centralized way by a gravity pipeline, and the liquid dung in the liquid storage tank is applied to nearby farmlands at regular intervals. Cleaning the household septic tank once every three years, and applying the cleaned manure residues into the farmland when the farmland is ploughed.
Claims (10)
1. An on-line wind-drawing-on-site gravity sewage-discharging suction and sewage-discharging method is characterized in that: including but not limited to sanitary ware, an on-line draft-gravity dirt discharging device, a waste water storage tank, the on-line draft-gravity dirt discharging device and the waste water storage tank are installed at the position adjacent to the sanitary ware, the water outlet of the sanitary ware is connected with the water inlet of the on-line draft-gravity dirt discharging device, the water outlet of the on-line draft-gravity dirt discharging device is arranged above the feed inlet of the waste water storage tank, the on-line draft-gravity dirt discharging device comprises but not limited to a container with a water inlet, a draft combination arranged at the top of the container and a gravity dirt discharging combination arranged at the bottom of the container, the gravity dirt discharging combination comprises a normally closed outlet, when waste water generated by one-time defecation is injected into the container, the outlet is opened under the gravity action of the waste water and the waste water is discharged from the container, the draft combination has the function of discharging air from the container to the atmospheric environment, when the waste water is required to be discharged from the sanitary ware, the air extractor is opened and is closed after the air extractor is operated for a short time, so that the waste water in the sanitary ware is transferred to the waste water storage tank through the on-line air extraction-gravity sewage discharger, and then can be consumed through the on-site arranged discharge, treatment or resource utilization measures, or transferred to different places for discharge, treatment or resource utilization in a vehicle-mounted or pipeline conveying mode.
2. An on-line wind-drawing-in-place gravity sewage suction and discharge method as claimed in claim 1, wherein: the volume of the container is 3-5 times of the volume of the waste water discharged by the sanitary ware once.
3. An on-line wind-drawing-in-place gravity sewage suction and discharge method as claimed in claim 1, wherein: when the water inlet of the container is kept sealed, the pressure formed by the continuous operation of the draft combination in the container is 5-30 kilopascals lower than the external atmospheric pressure.
4. An on-line wind-drawing-in-place gravity sewage suction and discharge method as claimed in claim 1, wherein: the waste water storage tank is combined with a container which is discharged, treated, utilized or transferred on site.
5. An on-line wind-drawing-in-place gravity sewage suction and discharge method as claimed in claim 1, wherein: the time delay is set to be 0.3-1 second, and the time delay is properly prolonged along with the lengthening of the distance between the on-line wind-drawing gravity sewage discharger and the sanitary ware and the increasing of the amount of the discharged waste water.
6. An on-line wind-drawing-in-place gravity sewage suction and discharge method as claimed in claim 1, wherein: the opening and closing of the air draft combination and the operation of the toilet are controlled by an integrated program.
7. An on-line wind-drawing-in-place gravity sewage suction and discharge method as claimed in claim 1, wherein: the sanitary ware has two sewage discharge working modes, wherein one sewage discharge working mode is to discharge sewage by depending on negative pressure generated by running the wind-pulling combination, and the other sewage discharge working mode is to discharge sewage by the hydraulic dead weight of added clean water without running the wind-pulling combination.
8. A device for a suction pollution discharge method for on-line wind-drawing-gravity pollution discharge is characterized in that: the device comprises a feed inlet, an air draft combination, a container and a gravity sewage discharging combination, wherein the feed inlet is arranged in the middle of the container, the gravity sewage discharging combination is arranged at the bottom of the container and keeps normally closed, when waste water generated by one-time defecation enters the container, the gravity sewage discharging combination is opened under the action of the gravity of the waste water and discharges the waste water from the container, and the air draft combination is arranged at the top of the container and has the function of discharging air in the container to the external atmospheric environment.
9. The apparatus for suction blowdown method of on-line draft-gravity blowdown as claimed in claim 8, wherein: the wind-pulling combination has the function of closing in a delayed manner after being opened.
10. A device for a suction pollution discharge method for on-line wind-drawing-gravity pollution discharge is characterized in that: the gravity sewage discharge combination is realized by adopting a movable door and a balancing weight.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395303.XA CN112554301A (en) | 2020-11-30 | 2020-11-30 | On-line wind-drawing-on-site gravity sewage-discharging suction and sewage-discharging method and device |
| PCT/CN2021/096083 WO2022110702A1 (en) | 2020-11-30 | 2021-05-26 | Online draft-in-place gravity sewage discharging device and method, and suction and blowing-off system and method |
| EP21896212.4A EP4253675A1 (en) | 2020-11-30 | 2021-05-26 | Online draft-in-place gravity sewage discharging device and method, and suction and blowing-off system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395303.XA CN112554301A (en) | 2020-11-30 | 2020-11-30 | On-line wind-drawing-on-site gravity sewage-discharging suction and sewage-discharging method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112554301A true CN112554301A (en) | 2021-03-26 |
Family
ID=75047586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011395303.XA Pending CN112554301A (en) | 2020-11-30 | 2020-11-30 | On-line wind-drawing-on-site gravity sewage-discharging suction and sewage-discharging method and device |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4253675A1 (en) |
| CN (1) | CN112554301A (en) |
| WO (1) | WO2022110702A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022110702A1 (en) * | 2020-11-30 | 2022-06-02 | 中国科学院生态环境研究中心 | Online draft-in-place gravity sewage discharging device and method, and suction and blowing-off system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4136931A1 (en) * | 1991-04-23 | 1992-10-29 | Rauno Haatanen | DRAIN SYSTEM FOR THE DRAIN UNIT OF A UNIT PRODUCING UNIT |
| KR101190379B1 (en) * | 2012-02-17 | 2012-10-11 | 이해룡 | Auto discharge equipment of vacuum toilet system |
| CN203559477U (en) * | 2013-09-17 | 2014-04-23 | 上海亮力活动房有限公司 | Vacuum toilet |
| CN107435359A (en) * | 2016-05-25 | 2017-12-05 | 山东腾博环境科技有限公司 | Public toilet faeces vacuum self-priming apparatus |
| CN110552410A (en) * | 2019-09-24 | 2019-12-10 | 谢智勇 | whole-course negative pressure closestool and integrated washstand for hiding same |
| CN111119307A (en) * | 2020-01-15 | 2020-05-08 | 四川旅发环保科技有限公司 | Vacuum type foam water-saving toilet |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003303776A1 (en) * | 2003-01-24 | 2004-08-13 | Tatuo Suzuki | Toilet |
| CN201010964Y (en) * | 2007-02-03 | 2008-01-23 | 张其标 | Combined type closet |
| CN101691777B (en) * | 2009-09-24 | 2011-09-14 | 山东华腾环保科技有限公司 | Vacuum-assisted toilet |
| CN201762796U (en) * | 2010-09-07 | 2011-03-16 | 徐连生 | Energy saving and environmental protection closestool |
| JP6116891B2 (en) * | 2012-12-25 | 2017-04-19 | アロン化成株式会社 | Toilet bowl |
| DE202013011431U1 (en) * | 2013-12-20 | 2015-03-23 | Evac Gmbh | Vacuum toilet with centrifugal separator |
| CN106836409A (en) * | 2017-03-23 | 2017-06-13 | 江苏慧明智能科技有限公司 | Care bed vacuum excrement collector |
| CN111576573B (en) * | 2020-04-29 | 2021-09-03 | 山东中车华腾环保科技有限公司 | Household toilet system and working method |
| CN112554301A (en) * | 2020-11-30 | 2021-03-26 | 中国科学院生态环境研究中心 | On-line wind-drawing-on-site gravity sewage-discharging suction and sewage-discharging method and device |
-
2020
- 2020-11-30 CN CN202011395303.XA patent/CN112554301A/en active Pending
-
2021
- 2021-05-26 WO PCT/CN2021/096083 patent/WO2022110702A1/en unknown
- 2021-05-26 EP EP21896212.4A patent/EP4253675A1/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4136931A1 (en) * | 1991-04-23 | 1992-10-29 | Rauno Haatanen | DRAIN SYSTEM FOR THE DRAIN UNIT OF A UNIT PRODUCING UNIT |
| KR101190379B1 (en) * | 2012-02-17 | 2012-10-11 | 이해룡 | Auto discharge equipment of vacuum toilet system |
| CN203559477U (en) * | 2013-09-17 | 2014-04-23 | 上海亮力活动房有限公司 | Vacuum toilet |
| CN107435359A (en) * | 2016-05-25 | 2017-12-05 | 山东腾博环境科技有限公司 | Public toilet faeces vacuum self-priming apparatus |
| CN110552410A (en) * | 2019-09-24 | 2019-12-10 | 谢智勇 | whole-course negative pressure closestool and integrated washstand for hiding same |
| CN111119307A (en) * | 2020-01-15 | 2020-05-08 | 四川旅发环保科技有限公司 | Vacuum type foam water-saving toilet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022110702A1 (en) * | 2020-11-30 | 2022-06-02 | 中国科学院生态环境研究中心 | Online draft-in-place gravity sewage discharging device and method, and suction and blowing-off system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022110702A1 (en) | 2022-06-02 |
| EP4253675A1 (en) | 2023-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112554301A (en) | On-line wind-drawing-on-site gravity sewage-discharging suction and sewage-discharging method and device | |
| CN101634160A (en) | Domestic water recycling system | |
| CN101012661A (en) | Non-pollution discharge treating system for waste and water of resident storied building | |
| CN206784521U (en) | A kind of domestic household effluent intelligent circulation utilizes system | |
| EP0969153A2 (en) | Sewer system | |
| CN206693343U (en) | Care bed vacuum excrement collector | |
| CN206956827U (en) | A kind of civil buildings vacuum sanitation system | |
| CN205636964U (en) | Vacuum type excrement collecting system | |
| CN201485959U (en) | On-line vacuum drainage system | |
| CN201176620Y (en) | Low current drain vacuum drainage method system | |
| CN101805027A (en) | Vacuum wastewater and sewage collection system | |
| CN201305885Y (en) | Vacuum drainage system of washrooms in underground buildings | |
| CN111809705A (en) | Novel urban vacuum sewage system | |
| CN106836409A (en) | Care bed vacuum excrement collector | |
| CN201317960Y (en) | Intelligent wastewater recycling system | |
| CN201317959Y (en) | Wash sewage reuse system | |
| CN207846595U (en) | Economical toilet | |
| CN212506616U (en) | Novel urban vacuum sewage system | |
| CN214005872U (en) | Vacuum-maintained human body excretion device | |
| CN1974964B (en) | Compound far infrared electromagnetic inductive water flushing toilet | |
| CN214574434U (en) | Device for realizing suction and pollution discharge of toilet stool | |
| CN213297285U (en) | Open-air domestic waste collection and resourceful disposal system | |
| CN212477977U (en) | Water-saving squatting device and toilet | |
| CN201047094Y (en) | Family sewage water recycling device | |
| CN207919630U (en) | A kind of energy saving water treatment system of office building |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |