CN210194738U - Pressure groundwater recharging system for building roof rainwater - Google Patents

Pressure groundwater recharging system for building roof rainwater Download PDF

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Publication number
CN210194738U
CN210194738U CN201920421706.3U CN201920421706U CN210194738U CN 210194738 U CN210194738 U CN 210194738U CN 201920421706 U CN201920421706 U CN 201920421706U CN 210194738 U CN210194738 U CN 210194738U
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China
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rainwater
pressure
roof
pipe
building
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CN201920421706.3U
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Chinese (zh)
Inventor
Zhaogeng Wang
王兆庚
Qizhong Guo
郭祺忠
Jijian Lian
练继建
Liang Chen
陈亮
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Tianjin University
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Tianjin University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/108Rainwater harvesting
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/40Protecting water resources
    • Y02A20/406Aquifer recharge

Abstract

The utility model discloses a pressure groundwater recharging system for rainwater on building roofs, which comprises a rainwater collecting device, a rainwater pipe, a rainwater purifying system and a groundwater pressure recharging system; the rainwater collecting device, the rainwater purification system and the underground water pressure back-supplementing system are sequentially connected through a rainwater pipe; rainwater on the building roof is collected by the rainwater collecting device and then enters the rainwater purification system for rapid purification treatment, and the purified rainwater enters the underground water pressure recharging system through the rainwater pipe and is finally recharged to the underground. The utility model discloses the system can collect building roof rainwater, purify fast, and utilizes the pressure flood peak that roof rainwater itself has, under the condition that does not need external energy input, realizes that the rainwater has the pressure and replenishes groundwater, can effectively alleviate the difficult problem that urban groundwater shortage, waterlogging frequently take place to practice thrift rainwater comprehensive utilization cost.

Description

Pressure groundwater recharging system for building roof rainwater
Technical Field
The utility model belongs to rainwater utilization field, concretely relates to building roof rainwater presses and mends groundwater system again.
Background
At present, urban rainwater utilization modes include: rainwater collection, storage and reuse and artificial retention and infiltration technologies.
Rainwater collection, storage and reuse can be divided into secondary reuse, groundwater recharging and the like, and the artificial retention and infiltration technology can be elaborated into permeable pavement, a biological retention system, a green roof, a grass planting ditch, a concave green land, a plant buffer zone and the like; the two aspects have different emphasis functions, but mainly play the roles of seepage, stagnation, storage, purification and use, thereby exerting the resource utilization value of the rainwater to a greater extent.
However, the two technologies have the problem of contradiction in space utilization in the aspect of increasing the underground water content, wherein the manual retention and infiltration technology (infiltration and stagnation) needs to be provided with related measures and occupies a larger space of a city; rainwater collection, storage and reuse (storage, purification and utilization) requires a reservoir to be built, occupies urban land, also involves the problem of insufficient space, and has contradiction with urban space utilization. Moreover, the principle of the technology (except for replenishing underground water) is basically to increase the retention time of rainwater so that the rainwater naturally seeps, but the time period of the process is long, and the effect is not obvious on rapidly increasing the storage capacity of the underground water and effectively relieving urban flood and the like.
However, the existing rainwater groundwater recharging technology has advantages in rapidly increasing the storage capacity of groundwater; on one hand, the current rainwater recharge underground water mode adopts the modes of firstly collecting and storing, then purifying and then recharging, but in the process of collecting and storing, the potential energy of rainwater falling to the roof of a building is lost; and the processes of confluence collection, long-term storage and the like in the collection and storage are easy to deteriorate the quality of rainwater, cause the problems of secondary pollution and difficult purification of the rainwater, and increase the utilization cost of the rainwater. On the other hand, the common methods for replenishing groundwater with rainwater include a ground infiltration method and a pipe well injection method, but the two methods have defects; the ground infiltration method mainly adopts natural infiltration, has long time period and high requirement on the field (permeability and floor area); the pipe well injection method can be divided into a gravity injection method, a vacuum infusion method and a pressurization infusion method; among the three modes, the pressure compensation mode is the one with the highest compensation efficiency, and compared with the non-pressure compensation mode, the compensation efficiency can be improved by about 15% -200%. However, large-scale recharging equipment such as a pressure pump and a water storage tank need to be arranged for pressure recharging, and the external power needs to be continuously supplied, so that the use cost is high. Based on the two problems, the comprehensive utilization cost of the rainwater is increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the prior art, the utility model provides a building roof rainwater presses resupply groundwater system to solve among the prior art urban groundwater shortage, waterlogging frequently, problem that rainwater comprehensive utilization is with high costs.
The technical scheme of the utility model is that:
a pressure groundwater recharging system for rainwater on a building roof comprises a rainwater collecting device, a rainwater pipe, a rainwater purifying system and a groundwater pressure recharging system; the rainwater collecting device, the rainwater purification system and the underground water pressure back-supplementing system are sequentially connected through a rainwater pipe; rainwater on the building roof is collected by the rainwater collecting device and then enters the rainwater purification system for rapid purification treatment, and the purified rainwater enters the underground water pressure recharging system through the rainwater pipe and is finally recharged to the underground.
The rainwater purification system sequentially comprises a rainwater filtering device and a rainwater purification device from top to bottom. The rainwater purification system number includes but is not limited to 1 set, and can be installed at any position in front of the water filter pipe.
The underground water pressure recharging system comprises a well pipe, a strainer and a filter material, purified rainwater is transmitted to the strainer through the well pipe, enters the filter material through small holes in the surface of the strainer and is recharged to the underground.
And a radiation well pipe is also arranged on the water filtering pipe. The radiant well pipe is arranged horizontally or obliquely downwards.
The underground water pressure recharging system is arranged below the water surface of the underground aquifer.
The building roof is provided with a roof super-elevation part, and overflow drain holes are formed in the roof super-elevation part.
The rainwater collecting device comprises but is not limited to a rainwater hopper, a water collecting well, a rainwater diversion trench or a water pump; the number of the rainwater collecting devices installed on the roof of the building includes, but is not limited to, 1 set, and the rainwater collecting devices can be installed on any position of the roof of the building.
The filter material includes, but is not limited to, pebbles, gravels, and filter membranes.
The utility model has the advantages that:
1. the utility model discloses can realize having of urban construction roofing rainwater presses the anaplerosis to groundwater. On the basis of collecting and quickly purifying rainwater on the building roof, the water head pressure of the rainwater on the building roof is fully utilized, and the rainwater is replenished to underground water under pressure on the premise of not depending on external measures and energy, so that the utilization efficiency of the rainwater can be effectively improved, and the problems of shortage of urban underground water and frequent waterlogging are solved;
2. the utility model discloses when carrying out on the spot pressure to mend back to groundwater to city building roofing rainwater, need not set up other engineering measures at the earth's surface, do not occupy unnecessary space, can effectively practice thrift the rainwater comprehensive utilization cost.
Description of the drawings:
FIG. 1 is a technical flow chart of pressure groundwater recharging for rainwater on a building roof;
FIG. 2 is an overall schematic diagram of a pressure groundwater recharging technology for rainwater on a building roof;
FIG. 3 is a schematic view of a rainwater purification system apparatus;
FIG. 4 is a schematic view of a groundwater pressure recharging system device;
FIG. 5 is a schematic view of a groundwater pressure recharge system with the addition of a radiant well pipe device; (a) the radiation well pipe is horizontally arranged (b) the radiation well pipe is arranged in a downward inclined mode;
reference numbers in the figures: 1 building roof, 2 rainwater collection devices, 3 downspouts, 4 rainwater purification systems, 5 groundwater pressure recharge systems, 6 rainwater filter equipment, 7 rainwater purification devices, 8 well pipes, 9 strainer pipes, 10 filter materials and 11 radiation well pipes.
The specific implementation mode is as follows:
the technical solution of the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, rainwater falling to a building roof 1 is collected by a rainwater collecting device 2 and then enters a rainwater purification system 4 for rapid purification, and clean rainwater after rapid purification is conveyed to an underground water pressure recharging system 5 through a rainwater pipe 3 for underground water pressure recharging, so that underground water resources are replenished.
As shown in figure 2, the utility model relates to a building roofing rainwater presses anaplerosis groundwater system, including rainwater collection device 2, downspout 3, rainwater clean system 4, groundwater press anaplerosis system 5. In actual operation, the number of the system installed on a single building roof includes, but is not limited to, 1 set.
As shown in fig. 3, the rainwater purification system 4 includes a rainwater filtering device 6 and a rainwater purification device 7. The rainwater passes through rainwater pipe 3 and gets into rainwater filtration equipment 6 and filters, later gets into rainwater purifier and further purifies, obtains the clean rainwater that quality of water is up to standard. In actual operation, the number of rainwater purification systems 4 in the present system technology includes, but is not limited to, 1 set, and can be installed at any position in front of the drainpipe 9.
As shown in fig. 4, the groundwater pressure recharging system 5 includes a well pipe 8, a strainer pipe 9 and a filter 10. The purified rainwater is transmitted to the strainer through the well pipe, then enters the filter material through the small holes on the surface of the strainer, and finally is replenished to the underground. The groundwater recharging system 5 is located underground, can be arranged at any position underground, is specifically arranged according to the using conditions, and is preferably arranged below the water surface of an underground aquifer in consideration of the influence of recharging efficiency. In order to improve the back-supplementing efficiency, a pressurizing water pump can be additionally arranged at any position in front of the underground water pressure back-supplementing system so as to increase the back-supplementing pressure and further increase the back-supplementing quantity.
As shown in fig. 5, the groundwater pressure recharge system 5 may also include a well pipe 8, a strainer pipe 9, a radiant well pipe 11, and a filter 10. The purified rainwater is transmitted to the strainer through the well pipe, then enters the filter material through the small holes on the surface of the strainer and the small holes of the radiation well pipe, and finally is replenished to the underground. As shown in (a) and (b), the radiant well pipes 11 may be arranged horizontally or inclined downward, and the water-permeable area of rainwater is increased by adding the radiant well pipes, thereby improving the back-up efficiency.
The building roof 1 is a roof of various buildings and is used as a lower cushion surface for rainwater falling. When groundwater is replenished under pressure by rainwater, in order to improve the replenishing efficiency, the building roof 1 can be provided with a roof super-high structure, so that temporary storage of rainwater on the building roof is realized, namely the building roof is used as a small rainwater storage warehouse, the replenishing time is further prolonged, and the replenishing rate is effectively increased; when the rainfall is too large, the sum of the storage capacity and the pressure compensation capacity of the small-sized rainwater storage warehouse of the building roof cannot contain the real-time rainfall, and an overflow drain hole can be arranged at the ultrahigh position of the roof to drain the redundant rainfall.
The rainwater collecting device 2 is used for collecting rainwater falling to a building roof, including but not limited to a rainwater hopper, a water collecting well or a rainwater diversion trench and the like, and can also be pumped and collected by a water pump; in practical operation, the number of the rainwater collecting devices installed on the building roof includes, but is not limited to, 1 set, and the rainwater collecting devices can be installed on any position of the building roof.
The rainwater pipe 3 is used for rainwater transmission in the process of replenishing underground water under pressure by rainwater on the building roof, and can be any self-made or commercially available pipeline such as a steel pipe, a stainless steel pipe, a plastic pipe, a cast iron pipe and the like.
The rainwater filtering device 6 is used for filtering the rainwater delivered by the rainwater pipe 3, and includes but is not limited to micro-filtration, membrane filtration, automatic filter, and the like. In actual operation, the number of rain water filtering devices 6 includes, but is not limited to, 1 set.
The rainwater purification device 7 is used for purifying the rainwater filtered by the rainwater filtering device 6, and includes but is not limited to physical purification (including but not limited to activated carbon purification, volcanic ash purification, ceramsite purification or a combination of various methods), chemical purification, biological purification or a combination of the above purification methods. In actual operation, the number of the rainwater purification devices 7 includes, but is not limited to, 1 set.
The well pipe 8 is used for connecting the rainwater pipe 3 and the strainer pipe 9, and can be any self-made or commercially available pipeline such as a steel pipe, a stainless steel pipe, a plastic pipe, a cast iron pipe and the like.
The water filter pipe 9 is used for replenishing the rainwater conveyed by the well pipe 8 to the underground, and can be any self-made or commercially available pipeline such as a steel pipe, a stainless steel pipe, a cast iron pipe and the like; the surface of the filter is provided with holes, the arrangement form of the holes includes but is not limited to plum blossom shape, horizontal row shape and the like, the shape of the holes includes but is not limited to round shape, square shape, diamond shape and the like, and water can enter the ground through the filter pipe.
The filter material 10 is used to separate soil or foreign materials outside the well from clean rainwater and keep the open of the replenishing channel outside the well, and the materials include, but are not limited to, pebbles, gravel, filtering membrane, etc.
The radiation well pipe 11 is arranged on the water filter pipe, can be horizontally or obliquely inclined downwards, and is used for replenishing the rainwater conveyed by the well pipe 8 to the underground, the permeable area of the rainwater is increased by additionally arranging the radiation well pipe, and the replenishing efficiency is improved, and the radiation well pipe can be any self-made or commercially-sold pipeline such as a steel pipe, a stainless steel pipe, a cast iron pipe and the like; the surface of the pipe is provided with openings, the arrangement form of the openings comprises but is not limited to quincunx, transverse row and the like, the opening form comprises but is not limited to round, square, diamond and the like, water can enter the underground through the radiant well pipes, and the number of the radiant well pipes 11 comprises but is not limited to 1.
The method or the arrangement form used in the above-mentioned all kinds of devices are not limited to a certain method or form, and any other method can be used the utility model discloses the principle or the utility model discloses a change the technique of used method or arrangement form among them all kinds of devices on the basis, all belong to this system technical category, all are within the scope of protection of the utility model.

Claims (10)

1. A pressure groundwater recharging system for rainwater on a building roof is characterized by comprising a rainwater collecting device, a rainwater pipe, a rainwater purifying system and a groundwater pressure recharging system; the rainwater collecting device, the rainwater purification system and the underground water pressure back-supplementing system are sequentially connected through a rainwater pipe; rainwater on the building roof is collected by the rainwater collecting device and then enters the rainwater purification system for rapid purification treatment, and the purified rainwater enters the underground water pressure recharging system through the rainwater pipe and is finally recharged to the underground.
2. The pressure recharging underground water system for rainwater on the building roof as claimed in claim 1, wherein the rainwater purification system comprises a rainwater filtering device and a rainwater purification device from top to bottom in sequence.
3. The building roof rainwater pressure compensating underground water system according to claim 2, wherein the number of the rainwater purification systems comprises but is not limited to 1, and the rainwater purification systems can be installed at any position before the water filter pipes.
4. The pressurized groundwater system for supplementing rainwater to the roof of a building according to claim 1, wherein the pressurized groundwater system comprises a well pipe, a strainer pipe and a filter material, and purified rainwater is transmitted to the strainer pipe through the well pipe, then enters the filter material through small holes on the surface of the strainer pipe, and finally is supplemented to the ground.
5. The pressure groundwater recharge system for rainwater on a building roof as claimed in claim 4, wherein the strainer is further provided with a radiation well pipe.
6. The building roof rainwater pressure recharging underground water system according to claim 5, wherein the radiation well pipes are arranged to be horizontal or inclined downwards.
7. The pressure recharging underground water system for rainwater on the building roof as claimed in claim 4, wherein the pressure recharging underground water system is arranged below the water surface of an underground aquifer.
8. The pressurized groundwater recharge system for rainwater on the roof of a building as claimed in claim 1, wherein the roof of the building is provided with a roof super elevation, and the roof super elevation is provided with an overflow drain hole.
9. The building roof rainwater pressure recharging underground water system according to claim 1, wherein the rainwater collecting device includes, but is not limited to, a rainwater hopper, a water collecting well, a rainwater diversion trench or a water pump; the number of the rainwater collecting devices installed on the roof of the building includes, but is not limited to, 1 set, and the rainwater collecting devices can be installed on any position of the roof of the building.
10. The pressure compensating groundwater system for rainwater on a building roof according to claim 4, wherein the filter material comprises but is not limited to pebbles, gravel and filter membrane.
CN201920421706.3U 2019-03-30 2019-03-30 Pressure groundwater recharging system for building roof rainwater Active CN210194738U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920421706.3U CN210194738U (en) 2019-03-30 2019-03-30 Pressure groundwater recharging system for building roof rainwater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920421706.3U CN210194738U (en) 2019-03-30 2019-03-30 Pressure groundwater recharging system for building roof rainwater

Publications (1)

Publication Number Publication Date
CN210194738U true CN210194738U (en) 2020-03-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111910844A (en) * 2020-06-30 2020-11-10 江苏筑原建筑设计有限公司 Sponge urban house rainwater recovery system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111910844A (en) * 2020-06-30 2020-11-10 江苏筑原建筑设计有限公司 Sponge urban house rainwater recovery system

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