CN217232188U

CN217232188U - Process flow of rainwater collection system

Info

Publication number: CN217232188U
Application number: CN202123320106.4U
Authority: CN
Inventors: 张海波
Original assignee: Jiangsu Aisige Environmental Protection Technology Co Ltd
Current assignee: Jiangsu Aisige Environmental Protection Technology Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-08-19
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses a rainwater collection system's process flow belongs to rainwater collection technical field, a rainwater collection system's process flow, include by the safe reposition of redundant personnel well, the cut-off well that the water pipe communicates in proper order along the horizontal direction, abandon a class well, blowoff well and cistern, be equipped with the back flush unit with debris exhaust that deposits in the cistern in the blowoff well, the vertical lifting shaft that is equipped with in the cistern, be equipped with in the lifting shaft and carry out filterable retrieval and utilization device to the rainwater, cistern one side is equipped with the clean water basin side by side, the vertical retrieval and utilization well that is equipped with in the clean water basin, retrieval and utilization well and retrieval and utilization device put through mutually, its advantage of this rainwater collection system lies in, prevents that the retaining module in the cistern from blockking, is favorable to carrying out drainage and collection work to the rainwater.

Description

Process flow of rainwater collection system

Technical Field

The utility model belongs to the technical field of the rainwater is collected, especially, rainwater collection system's process flow.

Background

The water resource is one of the most precious resources on the earth, nowadays of increasingly shortage of water resource, more and more countries begin to pay attention to research and development of rainwater collection and reuse, the traditional water storage facilities comprise civil engineering reservoirs, stainless steel water storage tanks and the like, but the reservoirs have the defects of easy breeding of bacteria, large occupied space, high manufacturing cost, high requirement on the foundation and the like, so the plastic rainwater collection module is more and more preferred by people due to the characteristics of convenience, easy assembly, strong corrosion resistance, high bearing strength, durability and the like, the rainwater collection system is formed by assembling a plurality of rainwater module assemblies into a water storage device, and as the water storage device is buried, the multi-module assembly structure is located underground, solid matters in rainwater are deposited for a long time, the modules are easily blocked, and drainage and collection are influenced.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the process flow of the rainwater collection system is provided to solve the problems in the prior art.

The technical scheme is as follows: the utility model provides a rainwater collection system's process flow, includes by the safe reposition of redundant personnel well, the cut dirty well that the water pipe communicates in proper order along the horizontal direction, abandons class well, blowoff well and cistern, be equipped with in the blowoff well with the debris exhaust back flush device that deposits in the cistern, the vertical lifting shaft that is equipped with in the cistern, be equipped with in the lifting shaft and carry out filterable retrieval and utilization device to the rainwater, cistern one side is equipped with the clean water basin side by side, the vertical retrieval and utilization well that is equipped with in the clean water basin, the retrieval and utilization well communicates with the retrieval and utilization device mutually.

By adopting the technical scheme, roof and road surface rainwater is poured into the safe diversion well, rainwater in the safe diversion well is poured into the sewage intercepting well through the water pipe to intercept larger garbage, then early rainwater is abandoned through the abandoning well, later rainwater is collected into the reservoir, at the moment, a turbulent layer is formed at the bottom of the reservoir through the backwashing device, sediment at the bottom of the reservoir is enabled to be overflowed, meanwhile, rainwater containing the sediment is discharged into an external sewage well from the sewage draining well, further, blocking of a water storage module in the reservoir is prevented, drainage and collection work of the rainwater is facilitated, at the moment, the rainwater in the reservoir is filtered and disinfected through the recycling device, and meanwhile, the treated rainwater is stored into a clean water tank through the recycling well to be stored and utilized.

In a further embodiment, the backwashing device comprises a backwashing pipeline arranged at the bottom of the reservoir, a plurality of submersible sewage pumps are arranged at the bottom of the sewage well, the output end of each submersible sewage pump is provided with the same sewage pipeline, the sewage pipeline penetrates through the sewage well and is communicated with an external sewage well, and each submersible sewage pump is communicated with the reservoir through a water pipe.

By adopting the technical scheme, the backwashing pipeline is communicated with the external water pump, the water pump conveys high-pressure water flow into the backwashing pipeline, and then the high-pressure water flow is sprayed out from the water outlet on the backwashing pipeline, so that a turbulent layer is formed at the bottom of the reservoir, sediment at the bottom of the reservoir is enabled to be flooded, at the moment, rainwater containing the sediment in the turbulent layer is pumped into the sewage discharge pipeline through the submersible sewage pump, then sewage is discharged into an external sewage well through the sewage discharge pipeline, and then a water storage module in the reservoir is cleaned.

In a further embodiment, a sewage intercepting basket is vertically arranged in the sewage intercepting well, a sewage intercepting filter screen is vertically arranged at the top end of the sewage intercepting basket, a sewage intercepting inlet is arranged on one side of the sewage intercepting filter screen, and the sewage intercepting inlet is communicated with a water inlet of the sewage intercepting well.

Through adopting above-mentioned technical scheme, during roofing and road surface rainwater irrigated safety reposition of redundant personnel well, rainwater in the safety reposition of redundant personnel well irrigates through the water inlet of intercepting dirty well and intercepts great rubbish in intercepting dirty filter screen, and great rubbish falls into through self gravity and intercepts dirty hand-basket, and then tentatively intercepts the rainwater.

In a further embodiment, a stainless steel filter cylinder is vertically arranged in the abandoning well, a stainless steel filter screen is vertically arranged in the stainless steel filter cylinder, a abandoning inlet is formed in one side of the stainless steel filter screen, the abandoning inlet penetrates through the stainless steel filter cylinder to be communicated with a water inlet of the abandoning well, a water flow weir baffle is arranged at the bottom end of the stainless steel filter screen, the water flow weir baffle is integrally inverted cone-shaped, a floating ball is placed in the water flow weir baffle, a sewage discharge port is formed in the stainless steel filter cylinder and is located below the abandoning water inlet and outlet, and the sewage discharge port penetrates through the abandoning well to be communicated with an external sewage well.

Through adopting above-mentioned technical scheme, the dirty and flow of initial stage rainwater is less, the rainwater filters through the stainless steel filter screen and flows to the inner chamber of rivers weir baffle in, the buoyancy that utilizes the rainwater this moment makes the floater float on the rainwater upper strata, then the rainwater flows into stainless steel filter cylinder bottom through the opening of rivers weir baffle, and then drain through stainless steel filter cylinder discharges to outside bilge well in, the later stage rainwater is clean and flow big, a large amount of rainwater is gushed into the inner chamber of rivers weir baffle this moment, utilize rainwater gravity to block the floater in the opening of rivers weir baffle this moment, the rainwater discharges to the cistern through the delivery port of abandoning the class well this moment, and then abandon the class to the initial stage rainwater, collect the later stage rainwater.

In a further embodiment, the retrieval and utilization device is including setting up the stainless steel grid in the lift-well shaft bottom, be equipped with a plurality of elevator pump in the stainless steel grid, each the output of elevator pump is equipped with same lifting pipe way, lifting pipe says and passes the lift-well and bury the all-in-one switch-on with the rainwater, bury and be equipped with the retrieval and utilization pipeline on the all-in-one with the rainwater, the retrieval and utilization pipeline is kept away from the rainwater and is buried the one end of all-in-one and extend to in the retrieval and utilization well.

Through adopting above-mentioned technical scheme, take out to the lifting pipe way through the rainwater in the elevator pump with the cistern in, then bury the all-in-one by the rainwater and disinfect the rainwater and filter, then discharge the rainwater that the filtration was accomplished to the retrieval and utilization well through the retrieval and utilization pipeline with disinfecting, and then collect the rainwater that the filtration was accomplished through the clean water basin and utilize, improve the water quality of rainwater in the clean water basin.

In a further embodiment, the bottom of the recycling well is provided with a plurality of recycling pumps, the output end of each recycling pump is provided with the same water outlet pipeline, the water outlet pipe penetrates through the recycling well and is communicated with the water replenishing well, and the water replenishing well is provided with a rainwater recycling main connector.

By adopting the technical scheme, the rainwater in the clean water tank is pumped into the water outlet pipeline through the recycling pump, then is discharged into the water replenishing well through the water outlet pipeline, and then is output by the rainwater recycling main connector for utilization, so that the rainwater recycling device is simple and convenient.

In a further embodiment, a water replenishing pipeline is arranged on the water replenishing well, one end, far away from the water replenishing well, of the water replenishing pipeline extends into the reuse well, and the water replenishing pipeline is communicated with an external tap water pipeline.

Through adopting above-mentioned technical scheme, discharge outside running water to the retrieval and utilization well through moisturizing pipeline in, then store outside running water by the clean water basin, ensure that water content is sufficient in the clean water basin.

In a further embodiment, the outside of the reservoir and the clean water tank are wrapped by an impermeable membrane, and the reservoir and the clean water tank are separated by the impermeable membrane.

Through adopting above-mentioned technical scheme, separate cistern and clean water basin through prevention of seepage membrane, avoid the sediment pollution clean water basin in the cistern, have the advantage of using to keep water quality in the clean water basin.

Has the advantages that: the bottom of the reservoir is made to form a turbulent layer through the backwashing device, so that sediments at the bottom of the reservoir are flooded, and rainwater containing sediments is drained from the sewage draining well to an external sewage well, so that a water storage module in the reservoir is prevented from being blocked, and drainage and collection work of the rainwater is facilitated.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the sewage intercepting well of the present invention;

FIG. 3 is a schematic view of the structure of the abandoning well of the present invention;

fig. 4 is a schematic view of the process of the present invention.

The reference signs are: 1. a safe diversion well; 2. a sewage intercepting well; 201. a sewage intercepting lifting basket; 202. a sewage interception filter screen; 203. a sewage intercepting inlet; 3. abandoning a flow well; 301. a floating ball; 302. a sewage draining outlet; 303. a water flow weir baffle; 304. a stainless steel filter screen; 305. a reject stream inlet; 306. a stainless steel filter cartridge; 4. a sewage well; 401. backwashing the pipeline; 402. a submersible sewage pump; 403. a blowdown line; 5. a reservoir; 6. lifting the well; 601. a lift pump; 602. a stainless steel grating; 603. lifting the pipeline; 7. the rainwater underground all-in-one machine; 8. a clean water tank; 9. an impermeable membrane; 10. a recycling well; 1001. a recycling pipeline; 1002. a recycling pump; 1003. a water outlet pipeline; 1004. a rainwater recycling main joint; 11. a water replenishing well; 1101. and a water replenishing pipeline.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

As shown in fig. 1 to 4, a process flow of a rainwater collection system comprises a safe diversion well 1, a sewage interception well 2, a abandoning well 3, a sewage disposal well 4 and a water storage tank 5 which are sequentially communicated along a horizontal direction by a water pipe, wherein a backwashing device for discharging impurities precipitated in the water storage tank 5 is arranged in the sewage disposal well 4, a lifting well 6 is vertically arranged in the water storage tank 5, a recycling device for filtering rainwater is arranged in the lifting well 6, a clean water tank 8 is arranged in parallel on one side of the water storage tank 5, a recycling well 10 is vertically arranged in the clean water tank 8, the recycling well 10 is communicated with the recycling device, roof and road surface rainwater is poured into the safe diversion well 1, the rainwater in the safe diversion well 1 is poured into the larger garbage in the sewage interception well 2 through the water pipe, then the early stage rainwater of abandoning is abandoned through the abandoning well 3, the later stage rainwater is collected into the backwashing well 5, at the moment, a turbulent layer is formed at the bottom of the water storage tank 5 through the water storage tank device, make the dregs of water in 5 bottoms of cistern rise, will contain the rainwater of dregs simultaneously and arrange to outside bilge well from sewage well 4, and then prevent that the retaining module in cistern 5 from blockking up, be favorable to carrying out drainage and collection work to the rainwater, carry out filtration and disinfection through the rainwater of retrieval and utilization device in with cistern 5 this moment, the rainwater that will handle the completion simultaneously stores to clear water basin 8 through retrieval and utilization well 10 and stores and utilizes.

As shown in fig. 1, the back flushing device comprises a back flushing pipeline arranged at the bottom of the reservoir 5, a plurality of submersible sewage pumps 402 are arranged at the bottom of the sewage well 4, the same sewage drainage pipeline 403 is arranged at the output end of each submersible sewage pump 402, the sewage drainage pipeline 403 penetrates through the sewage well 4 to be communicated with an external sewage well, each submersible sewage pump 402 is communicated with the reservoir 5 through a water pipe, the back flushing pipeline is communicated with an external water pump, the water pump conveys high-pressure water flow into the back flushing pipeline and then sprays out the high-pressure water flow from water outlets on the back flushing pipeline, a turbulent layer is formed at the bottom of the reservoir 5, sediment at the bottom of the reservoir 5 is enabled to be overflowed, rainwater containing the sediment in the flow layer is pumped into the sewage drainage pipeline 403 through the submersible sewage drainage pipeline 403 at the moment, then sewage is discharged into the external sewage well through the sewage drainage pipeline 403, and the water storage module in the reservoir 5 is cleaned.

If fig. 2, cut vertical being equipped with in the dirty well 2 and cut dirty hand-basket 201, cut the vertical being equipped with in dirty hand-basket 201 top and cut dirty filter screen 202, it is equipped with and cuts dirty import 203 to cut dirty filter screen 202 one side, cut dirty import 203 and cut the water inlet switch-on of dirty well 2, during roofing and road surface rainwater irrigate safety shunting well 1, rainwater in the safety shunting well 1 drenches into through the water inlet of cutting dirty well 2 and cuts the great rubbish of interception in the dirty filter screen 202, great rubbish falls into through self gravity and cuts in dirty hand-basket 201, and then tentatively cuts dirty to the rainwater.

Referring to fig. 2, a stainless steel filter cylinder 306 is vertically arranged in the waste flow well 3, a stainless steel filter screen 304 is vertically arranged in the stainless steel filter cylinder 306, a waste flow inlet 305 is arranged on one side of the stainless steel filter screen 304, the waste flow inlet 305 passes through the stainless steel filter cylinder 306 to be communicated with a water inlet of the waste flow well 3, a water flow weir baffle 303 is arranged at the bottom end of the stainless steel filter screen 304, the water flow weir baffle 303 is integrally inverted-cone-shaped, a floating ball 301 is arranged in the water flow weir baffle 303, a drain outlet 302 is arranged on the stainless steel filter cylinder 306 and is positioned below the waste flow water inlet and outlet, the drain outlet 302 passes through the waste flow well 3 to be communicated with an external sewage well, initial rainwater is dirty and has small flow, the rainwater flows into an inner cavity of the water flow weir baffle 303 through the stainless steel filter screen 304, at the moment, the floating ball 301 floats on the upper layer of the rainwater by utilizing the buoyancy of the rainwater, and then flows into the bottom of the stainless steel filter cylinder 306 through an opening of the water flow weir baffle 303, and then drain 302 through stainless steel filter cylinder 306 discharges to outside bilge well in, the later stage rainwater is clean and the flow is big, and a large amount of rainwater is gushed into the inner chamber of rivers weir baffle 303 this moment, utilizes rainwater gravity to block floater 301 in the opening of rivers weir baffle 303 this moment, and the rainwater discharges to cistern 5 through the delivery port of abandoning class well 3 this moment, and then abandons the class to initial stage rainwater, collects the later stage rainwater.

As shown in fig. 1, the recycling device comprises a stainless steel grating 602 arranged at the bottom of a lifting well 6, a plurality of lifting pumps 601 are arranged in the stainless steel grating 602, the same lifting pipeline 603 is arranged at the output end of each lifting pump 601, the lifting pipeline 603 penetrates through the lifting well 6 to be communicated with the rainwater ground-buried integrated machine 7, a recycling pipeline 1001 is arranged on the rainwater ground-buried integrated machine 7, one end, far away from the rainwater ground-buried integrated machine 7, of the recycling pipeline 1001 extends into the recycling well 10, rainwater in a reservoir 5 is pumped into the lifting pipeline 603 through the lifting pump 601, then the rainwater ground-buried integrated machine 7 is used for disinfecting and filtering the rainwater, then the rainwater after being disinfected and filtered is discharged into the recycling well 10 through the recycling pipeline 1001, then the rainwater after being disinfected and filtered is collected and utilized through a clean water tank 8, and the quality of the rainwater in the clean water tank 8 is improved.

As shown in fig. 1, a plurality of recycling pumps 1002 are arranged at the bottom of the recycling well 10, the same water outlet pipe 1003 is arranged at the output end of each recycling pump 1002, the water outlet pipe passes through the recycling well 10 and is communicated with the water replenishing well 11, a rainwater recycling main connector 1004 is arranged on the water replenishing well 11, rainwater in the clean water tank 8 is pumped into the water outlet pipe 1003 through the recycling pumps 1002, then the rainwater is discharged into the water replenishing well 11 through the water outlet pipe 1003, and then the rainwater is output and utilized through the rainwater recycling main connector 1004, so that the method is simple and convenient.

As shown in fig. 1, a water replenishing pipeline 1101 is arranged on the water replenishing well 11, one end of the water replenishing pipeline 1101, which is far away from the water replenishing well 11, extends into the reuse well 10, the water replenishing pipeline 1101 is communicated with an external tap water pipeline, the external tap water is discharged into the reuse well 10 through the water replenishing pipeline 1101, and then the external tap water is stored by the clean water tank 8, so that the water content in the clean water tank 8 is sufficient.

As shown in fig. 1, the outer sides of the reservoir 5 and the clean water tank 8 are both wrapped by the anti-seepage film 9, the reservoir 5 and the clean water tank 8 are separated by the anti-seepage film 9, so that the sediment in the reservoir 5 is prevented from polluting the clean water tank 8, and the quality of the water body in the clean water tank 8 is maintained.

The working principle is as follows: rainwater on the roof and the road surface is poured into the safe diversion well 1, rainwater in the safe diversion well 1 is poured into the sewage interception filter screen 202 through a water inlet of the sewage interception well 2 to intercept larger garbage, the larger garbage falls into the sewage interception lifting basket 201 through self gravity, primarily intercepted rainwater is discharged into the sewage abandoning well 3 through a water outlet of the sewage interception well 2, the rainwater is filtered and flows into an inner cavity of the water flow weir baffle 303 through the stainless steel filter screen 304 due to the fact that initial rainwater is dirty and the flow rate is small, the floating ball 301 floats on the upper layer of the rainwater through the buoyancy of the rainwater at the moment, then the rainwater flows into the bottom of the stainless steel filter cylinder 306 through an opening of the water flow weir baffle 303 and is discharged into an external sewage well through a sewage discharge outlet 302 of the stainless steel filter cylinder 306, later stage rainwater is clean and has large flow rate, a large amount of rainwater flows into the inner cavity of the water flow weir baffle 303 at the moment, the floating ball 301 is blocked in the opening of the water flow weir baffle 303 through the rainwater gravity at the moment, at the moment, rainwater is discharged into a reservoir 5 through a water outlet of a drainage well 3, initial rainwater is drained, later rainwater is collected, when a large amount of sediments exist in the reservoir 5, high-pressure water flow is conveyed into a backwashing pipeline by a water pump and then is sprayed out from a water outlet on the backwashing pipeline, a turbulent layer is further formed at the bottom of the reservoir 5, so that the sediments at the bottom of the reservoir 5 are overflowed, the rainwater containing the sediments in the turbulent layer is pumped into a sewage discharge pipeline 403 by a submersible sewage pump 402 at the moment, then the sewage is discharged into an external sewage well through the sewage discharge pipeline 403, a water storage module in the reservoir 5 is further cleaned, the rainwater in the reservoir 5 is pumped into a lifting pipeline 603 through a lifting pump 601, then the rainwater is disinfected and filtered by a rainwater underground all-in-one machine 7, and then the disinfected and filtered rainwater is discharged into a reuse well 10 through a reuse pipeline 1001, and then the rainwater which is disinfected and filtered is collected through the clean water tank 8, the rainwater in the clean water tank 8 is pumped into a water outlet pipeline 1003 through a recycling pump 1002, then is discharged into the water replenishing well 11 through the water outlet pipeline 1003, then is output and utilized through a rainwater recycling main connector 1004, when the content of the water in the clean water tank 8 is smaller than a standard cone value, external tap water is discharged into a recycling well 10 through a water replenishing pipeline 1101, and then is stored by the clean water tank 8, so that the content of the water in the clean water tank 8 is sufficient.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be modified to perform various equivalent transformations, which all belong to the protection scope of the present invention.

Claims

1. The utility model provides a rainwater collection system's process flow, includes safe reposition of redundant personnel well (1), the cut-off well (2) that communicate in proper order along the horizontal direction by the water pipe, abandons flowing well (3), blowpit (4) and cistern (5), its characterized in that, be equipped with in blowpit (4) with the debris exhaust back flush device who deposits in cistern (5), vertical lifting well (6) that is equipped with in cistern (5), be equipped with in lifting well (6) and carry out filterable retrieval and utilization device to the rainwater, cistern (5) one side is equipped with clean water basin (8) side by side, vertical retrieval and utilization well (10) that are equipped with in clean water basin (8), retrieval and utilization well (10) and retrieval and utilization device switch-on mutually.

2. A process flow of a rainwater collection system according to claim 1, characterized in that said backwashing means comprises a backwashing pipeline arranged at the bottom of the reservoir (5), a plurality of submersible sewage pumps (402) are arranged at the bottom of the sewage well (4), the same sewage pipeline (403) is arranged at the output end of each submersible sewage pump (402), said sewage pipeline (403) is communicated with an external sewage well through the sewage well (4), and each submersible sewage pump (402) is communicated with the reservoir (5) through a water pipe.

3. A rainwater collection system process according to claim 1 and characterized in that a sewage interception basket (201) is vertically arranged in the sewage interception well (2), a sewage interception filter screen (202) is vertically arranged at the top end of the sewage interception basket (201), a sewage interception inlet (203) is arranged on one side of the sewage interception filter screen (202), and the sewage interception inlet (203) is communicated with a water inlet of the sewage interception well (2).

4. A process of a stormwater collection system according to claim 1, a stainless steel filter cylinder (306) is vertically arranged in the flow abandoning well (3), a stainless steel filter screen (304) is vertically arranged in the stainless steel filter cylinder (306), a drainage inlet (305) is arranged on one side of the stainless steel filter screen (304), the drainage inlet (305) passes through the stainless steel filter cylinder (306) to be communicated with a water inlet of the drainage well (3), the bottom end of the stainless steel filter screen (304) is provided with a water flow weir baffle (303), the water flow weir baffle (303) is integrally in an inverted cone shape, a floating ball (301) is arranged in the water flow weir baffle plate (303), a sewage outlet (302) is arranged on the stainless steel filter cylinder (306), the sewage draining outlet (302) is positioned below the flow discarding water inlet and outlet, and the sewage draining outlet (302) penetrates through the flow discarding well (3) to be communicated with an external sewage well.

5. The process flow of the rainwater collection system according to claim 1, wherein the recycling device comprises a stainless steel grating (602) arranged at the bottom of the lift well (6), a plurality of lift pumps (601) are arranged in the stainless steel grating (602), the output end of each lift pump (601) is provided with the same lift pipeline (603), each lift pipeline (603) penetrates through the lift well (6) to be communicated with the rainwater underground all-in-one machine (7), a recycling pipeline (1001) is arranged on the rainwater underground all-in-one machine (7), and one end, far away from the rainwater underground all-in-one machine (7), of the recycling pipeline (1001) extends into the recycling well (10).

6. A process flow of a rainwater collection system according to claim 1, characterized in that a plurality of recycling pumps (1002) are provided at the bottom of the recycling well (10), the same water outlet pipe (1003) is provided at the output end of each recycling pump (1002), the water outlet pipe passes through the recycling well (10) and is communicated with the water replenishing well (11), and the water replenishing well (11) is provided with a rainwater recycling main joint (1004).

7. A process flow of a rainwater collection system according to claim 6, wherein a water supply pipeline (1101) is arranged on the water supply well (11), one end of the water supply pipeline (1101) far away from the water supply well (11) extends into the reuse well (10), and the water supply pipeline (1101) is communicated with an external tap water pipeline.

8. A process flow of a rainwater collection system according to claim 1, wherein the outside of the reservoir (5) and the clean water reservoir (8) are wrapped by an impermeable membrane (9), and the reservoir (5) and the clean water reservoir (8) are separated by the impermeable membrane (9).