CN209686564U - A kind of small sponge urban ecology rainwater storage cell system - Google Patents

Abstract

The utility model discloses a small sponge city ecological rainwater storage tank system, which comprises a rainwater storage tank system, a concave green space collection and purification system, and an ecological filtration system. The storage tank system is connected, and the concave green space collection and purification system is connected with an overflow rainwater pipe system. Realize the efficient regulation and storage of rainwater and the natural purification and filtration of rainwater, realize the overflow discharge of excess rainwater, and realize the sponge that combines various technologies such as infiltration, stagnation, storage, purification, use, and drainage in the construction of sponge cities The urban ecological rainwater storage tank system saves water resources and improves the utilization efficiency of the storage tank. It has great use value for areas with frequent rainfall and water shortages.

Description

A small sponge city ecological rainwater storage tank system

technical field

The utility model relates to the technical field of environmental protection, in particular to a small sponge city ecological rainwater storage tank system.

Background technique

At present, for most areas, rainwater is directly discharged to the rainwater pipe network through surface runoff, and finally flows into the urban river. , the current municipal rainwater pipe network system in many cities is difficult to bear, the rainwater runoff in the city is relatively large, and it is very likely to cause urban waterlogging. For areas that are relatively water-deficient, a large amount of rainwater discharge is a waste of resources for the city. Therefore, under the background of the wave of sponge city construction, for certain areas of the city that require waterlogging prevention and rainwater reuse, It is necessary to consider the development of a small-scale rainwater control storage and reuse function of the sponge city ecological rainwater storage tank system.

Our country pays more and more attention to urban water problems. The construction of sponge cities is already in full swing. With the continuous advancement of urban construction, the impermeable area of urban areas is increasing. More rainwater enters the municipal rainwater pipe network and finally flows into urban rivers. The rainwater has not been fully utilized, and the excessive rainwater runoff will also lead to the increasingly prominent problem of urban waterlogging. Therefore, in the tide of sea city construction, it is necessary to add the concept of ecological construction of sponge city, and apply the sponge city ecological rainwater storage tank system of urban rainwater reuse and flood peak reduction to the construction of sponge city. On the one hand, it can reduce the peak flow to a certain extent and reduce the risk of urban waterlogging; on the other hand, it promotes the resource utilization of rainwater and avoids a large loss of rainwater resources. In a reasonable way, the sponge city spirit of infiltration, stagnation, storage, utilization, and drainage in the concept of sponge city construction is integrated into urban construction to achieve efficient management and utilization of water to improve the urban environment.

Contents of the invention

The technical problem to be solved by the utility model is to provide a small sponge city ecological rainwater storage tank system for the above-mentioned defects in the prior art, which can realize efficient regulation and storage of rainwater and natural purification and filtration of rainwater. Exceeding the standard rainwater realizes overflow discharge, and realizes the sponge city ecological rainwater storage tank system that combines various technologies such as infiltration, stagnation, storage, purification, use, and drainage in the construction of the sponge city, which saves water resources and improves the regulation and storage. The utilization efficiency of the pool has great value for areas with frequent rainfall and water shortages.

The technical scheme that the utility model adopts for solving the problems of the technologies described above is:

A small sponge city ecological rainwater storage tank system, including a rainwater storage tank system, a concave green space collection and purification system, and an ecological filtration system. The concave green space collection and purification system is connected to the rainwater storage tank system through an ecological filtration system. The concave green space collection and purification system is connected with an overflow rainwater pipe system.

According to the above technical scheme, the sunken green space collection and purification system includes a sunken green space, and rainwater purification plants are arranged in the sunken green space.

According to the above technical scheme, an open curb is provided on one side of the upper end of the sunken green space.

According to the above-mentioned technical scheme, the ecological filtration system includes an artificial packing layer, a sand layer, a gravel layer, a permeable geotextile and a steel wire mesh distributed sequentially from top to bottom.

According to the above technical scheme, the recessed green space collection and purification system is connected with an overflow rainwater pipe system, the overflow rainwater pipe system includes an overflow pipe, the upper end of the overflow pipe is connected with the recessed green space collection and purification system, and the lower end of the overflow pipe Connect with stormwater inspection port.

According to the above technical scheme, the upper end of the overflow pipe is provided with an overflow port, and the overflow port is arranged in the concave green space collection and purification system. Unicom.

According to the above technical solution, the water inlet of the rainwater storage tank system is lower than the seepage surface of the sunken green space collection and purification system, and the inlet elevation of the sunken green space collection and purification system is lower than the inlet of the overflow rainwater pipe system.

According to the above technical solution, the rainwater storage tank system includes a storage tank, a rainwater recycling pump is installed in the storage tank, and the rainwater recycling pump is connected with a rainwater recycling pipe interface.

According to the above technical scheme, an emptying pump is also arranged in the storage tank.

According to the above technical scheme, a rainwater inspection well is arranged at the upper end of the storage tank.

The utility model has the following beneficial effects:

1. Through the rainwater storage tank system, the concave green space collection and purification system and the ecological filtration system, the rainwater flowing through can be initially purified and intercepted, and the runoff rainwater can be stored to a certain extent, and the rainwater path can be reduced to a certain extent. The reduction of the flow can make more use of the role of ecological purification, realize the efficient regulation and storage of rainwater and the natural purification and natural filtration of rainwater, and can realize overflow discharge of excess rainwater without affecting the rainwater flow in the catchment area. The flow capacity is integrated with the ecological rainwater purification system that uses concave green spaces and overflow stormwater outlets in the current sponge city construction, and the storage and recycling technologies of the storage tank are perfectly integrated to realize the sponge The sponge city ecological rainwater storage tank system combined with various technologies such as infiltration, stagnation, storage, purification, utilization and drainage in urban construction saves water resources and improves the utilization efficiency of storage tanks. Areas with a shortage of resources have greater use value.

2. The ecological purification of collected rainwater can be realized through the joint action of the sunken green space, overflow rainwater pipe, ecological purification and filtration system, and rainwater storage tank system. This ecological storage tank system is fully integrated into the construction of the sponge city The idea is to make better use of the purification function of the vegetation in the sunken green space, and give full play to the storage and purification functions of the storage tank, and make full use of the functions of each facility, which can reduce the peak flow of rainwater and alleviate the pollution. Waterlogging in the city, and through the purification of the concave green space, the control of non-point source pollution is realized, and the utilization rate of rainwater in the city is improved through the rainwater reuse function of the storage tank.

Description of drawings

Fig. 1 is the structural representation of the small and medium-sized sponge city ecological rainwater storage tank system in the embodiment of the present invention;

Fig. 2 is a schematic diagram of the rainwater flow of the small and medium-sized sponge city ecological rainwater storage tank system in the embodiment of the present invention;

In the figure, 1- storage tank, 2- rainwater inspection well, 3- artificial packing layer, 4- sand layer, 5- gravel layer, 6- permeable geotextile, 7- steel wire mesh, 8- overflow port, 9- Recessed green space, 10-open curb, 11-overflow pipe, 12-rainwater drainage horizontal pipe, 13-rainwater inspection port, 14-rainwater recycling pump, 15-rainwater recycling pipe interface.

Detailed ways

The utility model is described in detail below in conjunction with accompanying drawing and embodiment.

Referring to Figures 1 to 2, a small sponge city ecological rainwater storage tank system in an embodiment provided by the utility model includes a rainwater storage tank system, a concave green space 9 collection and purification system and an ecological filtration system , the collection and purification system of the sunken green space 9 is connected with the rainwater storage tank system through the ecological filtration system, and the collection and purification system of the sunken green space 9 is connected with an overflow rainwater pipe system; the upper end of the ecological filtration system is connected with the bottom of the sunken green space 9 Connection, the lower end of the ecological filtration system is connected to the inlet of the storage tank 1, and the collection and purification system of the concave green space 9 is an important type of LID control measure in the construction of the sponge city, which can perform preliminary purification and interception of the rainwater flowing through it. Runoff rainwater has a certain stagnation effect, which can reduce the amount of rainwater runoff to a certain extent.

Further, the ecological filtration system includes an artificial filler layer 3, a sand layer 4, a gravel layer 5, a permeable geotextile 6 and a steel wire mesh 7 distributed sequentially from top to bottom; , the steel wire mesh 7 is connected with the water inlet of the rainwater storage tank system, and can initially intercept the particles, gravel, and suspended solids in the rainwater before entering the rainwater storage tank 1, so that the rainwater entering the rainwater storage tank 1 can be kept relatively low. good water quality.

Further, the outer layer is composed of steel wire mesh 7 to initially filter rainwater. The distance between the steel wire mesh 7 is about 3-5 cm, and the size of the gravel in the steel wire mesh 7 is about 6-10 cm in diameter.

Further, the collection and purification system of the sunken green space 9 includes the sunken green space 9, and rainwater purification plants are arranged in the sunken green space 9; pollutants in the rainwater can be better intercepted and removed.

Further, the catchment ground of the sunken green space 9 requires a certain slope of 1%-10%.

Further, the collection and purification system of the sunken green land 9 is connected with an overflow rainwater pipe system, and the overflow rainwater pipe system includes an overflow pipe 11, and the upper end of the overflow pipe 11 is connected with the collection and purification system of the sunken green land 9, and the overflow pipe The lower end of 11 is connected to the rainwater inspection port 13; the inlet height of the overflow rainwater pipe should be reasonably designed to ensure that the rainwater enters the storage tank system first, and when the rainwater in the storage tank is full, it is discharged through the overflow rainwater outlet. It flows into the rainwater inspection well 2 and enters the municipal rainwater pipe network.

Further, the upper end of the overflow pipe 11 is provided with an overflow port 8, and the overflow port 8 is arranged in the collection and purification system of the sunken green land 9, and the lower end of the overflow pipe 11 is connected with a rainwater drainage horizontal pipe 12, and the rainwater drainage horizontal pipe 12 communicates with the rainwater inspection port 13; the overflow port 8 is provided with an intercepting cap.

Further, the water inlet of the rainwater storage tank system is lower than the seepage surface of the collection and purification system of the sunken green space 9, and the elevation of the inlet edge of the collection and purification system of the sunken green space 9 is lower than the overflow port 8; the height of the overflow port 8 It should be slightly higher than the height of the ecological gabion at the water inlet of the storage tank 1, and also slightly higher than the opening height of the curb stone 10 at the roadside opening, so as to ensure that the rainwater in the sunken green space 9 can preferentially enter the storage tank 1.

Further, the rainwater storage tank system includes a storage tank 1; the top of the storage tank 1 is provided with a manhole with a size of 800×800mm.

Further, a rainwater reuse pump 14 is provided in the regulating storage tank 1, and the rainwater recycling pump 14 is connected with a rainwater recycling pipe interface 15; The clean water entering the clear water pool is extracted and reused, and the reused rainwater can be used for greening, flushing toilets, car washing and other purposes.

Further, an emptying pump is also provided in the storage tank 1, and the recycling pump draws the upper layer of clear water for reuse, and the emptying pump emptyes the deposited rainwater with poor water quality.

Further, a rainwater inspection well 2 is provided at the upper end of the storage tank 1 .

Furthermore, an open curb 10 is provided on the upper side of the concave green space 9; the open curb 10 can collect part of the rainwater converging on the road, so as to ensure that the rainwater on the road can smoothly flow into the ecological rainwater storage tank system.

An ecological rainwater storage tank system for a small sponge city. According to the utility model, the ground can collect runoff rainwater from various types of underlying surfaces such as roads, green spaces, roofs, and squares.

Furthermore, the ground elevation of the ecological rainwater storage tank system should have a certain elevation difference compared with the surrounding water catchment area, so as to ensure that the rainwater can smoothly flow into the concave green space 9 and the storage tank system.

Furthermore, the ground should have a certain topographic slope, and the slope range is 1% to 10%. If the slope is small, it will be difficult for rainwater to collect, otherwise, runoff rainwater will cause greater erosion to the system.

Furthermore, the inlet height of the open curb 10 is slightly lower than the overflow port 8 of the overflow gully, generally 50-150mm.

Furthermore, the elevation of the edge of the entrance into the sunken green space 9 should be slightly lower than the overflow port 8 of the overflow stormwater outlet, generally 50-150mm.

Furthermore, the storage tank 1 should be provided with a certain thickness of covering soil, and it should be ensured that a large amount of domestic sewage will not flow in, and protective measures should be taken around it.

Further, the storage tank system further includes a pump pit and a submersible sewage pump, the pump pit is located at the lowest position at the bottom of the water collection area, and the submersible sewage pump is located in the pump pit.

Further, the gabion ecological purification system is respectively provided with a steel wire mesh 7 filter layer, an artificial filler layer 3, a sand layer 4, gravel, and a permeable interlayer, wherein the permeable interlayer is a permeable geotextile 6. While absorbing and filtering impurities in the water, the rainwater is infiltrated into the storage tank 1, and the rainwater is fully in contact with the filter materials of each layer, and the effect is good.

Further, the concave green space 9 is in a certain parabolic arc, and its lowest point is 300-600mm lower than the elevation of the overflow pipe mouth, so as to meet the water intake of the regulating storage tank 1 in this system, and at the same time, there will be no The overflow of large amounts of rainwater.

Further, the rainwater pump of the regulating storage tank 1 pumps water to the reuse water interface for use of rainwater reuse.

Working principle of the utility model:

The utility model is applicable to the collection and reuse of rainwater in urban buildings and communities, and specifically includes: the sunken green space 9 is connected to the storage tank 1 through an ecological filtration system, wherein the ecological filtration system includes an artificial packing layer 3, Sand layer 4, gravel layer 5, permeable geotextile 6, and steel wire mesh 7. In rainy weather, the rainwater converging on different underlying surfaces will generate ground runoff to a certain extent. The ground slope in the catchment area of the storage tank 2 should be It is set as a slope-down concave green space 9 to facilitate the collection of rainwater in the catchment area. When the rainwater gradually flows into the sunken green space 9, the plants in the sunken green space 9 can retain and filter the pollutants in the rainwater to a certain extent. The control effect of runoff and rainwater. The runoff rainwater flows into the concave green space 9 first, where the rainwater passes through the artificial packing layer 3, the sand layer 4, the gravel layer 5, the permeable geotextile 6, and the steel wire mesh 7, and finally enters the storage tank. The ecological filtration system It can have a better filtering effect on pollutants in runoff rainwater. In order to prevent the loss of a large amount of rainwater, it is preferentially entered into the storage tank 1, and the sunken green space 9 should have a certain sunken depth to store a certain amount of rainwater. Under larger rainfall conditions, in order to prevent the sunken green space 9 from accumulating a large amount of rainwater and avoid waterlogging, the sunken green space 9 should be provided with an overflow pipe 11 of a certain height, and the water storage depth in the sunken green space 9 When it is higher than the height of the overflow mouth, the rainwater passes through the overflow pipe 11. The overflow rainwater pipe is mainly for the rainwater discharged beyond the standard, and finally enters the rainwater inspection well 2 through the rainwater horizontal pipe 12, and enters the municipal rainwater drainage system through the rainwater pipe network. Finally enter the city river. The rainwater collected in the rainwater storage tank 1 can be reused by pumping the purified rainwater therein through the rainwater reuse pump 14 , and the rainwater is reused to the rainwater reuse pipe interface 15 .

In this embodiment, the sunken green space 9 can collect runoff rainwater collected from roofs, roads, square green spaces and other areas, wherein the road rainwater can pass through opening curbstones 10 to drain the runoff rainwater and allow the rainwater to flow into the ground. Recessed Greenbelt 9.

In this embodiment, the rainwater purification plants are planted in the concave green space 9, and the plants with better purification effect can be configured according to the local characteristics, so that they can be degraded by the substances in the roots of the plants and the action of related microorganisms The organic matter in the water can effectively purify the rainwater, thereby removing the pollutants in the rainwater such as COD, TN and TP in the water.

On the one hand, the utility model can realize the function of reducing the flood peak of rainwater in heavy rain weather, ensuring that the rainwater enters the storage tank system first, and when the water volume exceeds the storage volume of the storage tank 1, it passes through the overflow in the concave green space 9 Pipe 11 overflows to the nearest rainwater inspection well 2, which reduces the burden on the rainwater pipe network. 6. Steel wire mesh 7) Preliminary purification and filtration of rainwater ensures the water quality of the recycled water entering the storage tank 1, and when the water volume is too large, the rainwater overflowing into the rainwater pipe network will also be purified, to a certain extent On the one hand, it controls the non-point source pollution in the city and ensures the water quality of the rainwater entering the urban rainwater pipe network, which is in line with the construction concept of the sponge city.

In summary, the utility model discloses a small ecological rainwater storage tank system, which mainly includes a storage tank system, a recessed green space, an overflow rainwater pipe system, an ecological filtration system, and a water reuse system. The storage tank system is a simple rainwater collection and reuse rainwater storage device, which can have certain functions of rainwater peak clipping and rainwater reuse. The ecological filtration system mainly uses different filter layers to filter various impurities and pollutants. Interception and filtration; there are more vegetation planted in the concave green space system, which has an ecological interception effect on the rainwater flowing through, and can initially intercept and purify the runoff pollutants in the rainwater to a certain extent; the rainwater purification system regulates The rainwater in the storage tank is further purified, and the reuse water system extracts and reuses the purified rainwater in the storage tank through the rainwater recycling pump. The reused rainwater can be used for various purposes such as greening and watering, car washing water, etc. . The system combines the rainwater collection and reuse in the sponge city construction with the rainwater purification system, which has a certain effect of rainwater regulation and storage. It has a greater effect of reducing the peak runoff in the catchment area during heavy rains, and can reduce waterlogging in urban areas. problems, and has a certain role in the reuse of rainwater resources in buildings and communities. It is more in line with the current concept of sponge city construction. It is a new concept of sponge city construction in line with green ecology. It has the functions of economical and environmental protection of rainwater purification, reuse and storage. This set of system is stable and reliable, and can meet multiple functions in the construction of sponge cities. For areas with a high degree of ground hardening, the efficient regulation and storage of rainwater can be realized to a certain extent, the regulation and storage space of the regulation and storage tank can be fully utilized, and the rainwater can be reused, saving water resources and improving the The utilization efficiency of storage tanks has great value in areas with frequent rainfall and water shortages.

The purpose of the utility model is to provide an ecological rainwater storage tank system that can be used for rainwater regulation, storage and reuse for small-scale catchment areas such as buildings and residential areas. It can make more use of the role of ecological purification to achieve natural purification and natural filtration of rainwater, and can realize overflow discharge of excess rainwater without affecting the rainwater flow capacity of the catchment area, which is similar to the current sponge city construction. Ecological rainwater purification systems such as concave green spaces and overflow stormwater outlets are integrated, and the storage and recycling technologies of the storage tanks are perfectly integrated to achieve infiltration, stagnation, storage and purification in the construction of sponge cities. A sponge city ecological rainwater storage tank system that combines various technologies such as utilization, drainage, etc.

The above are only preferred embodiments of the utility model, and of course the scope of rights of the utility model cannot be limited with this. Therefore, equivalent changes made according to the patent scope of the utility model still belong to the protection scope of the utility model.

Claims (10)

1. a kind of small sponge urban ecology rainwater storage cell system, which is characterized in that including rainwater storage cell system, up concave type Greenery patches collection and purification system and ecology filtration system, concave herbaceous field collection and purification system pass through ecology filtration system and rainwater tune The connection of reservoir system, concave herbaceous field collection and purification system are connected with overflow-type rainwater guard system.

2. small sponge urban ecology rainwater storage cell system according to claim 1, which is characterized in that concave herbaceous field Collection and purification system includes concave herbaceous field, and the plant of rainwater purification is equipped in concave herbaceous field.

3. small sponge urban ecology rainwater storage cell system according to claim 2, which is characterized in that concave herbaceous field Upper end side be equipped with opening kerbstone.

4. small sponge urban ecology rainwater storage cell system according to claim 1, which is characterized in that eco-filtration system System includes hand-stuff layer, layer of sand, gravel layer, permeable geotextiles and the steel wire being from top to bottom sequentially distributed.

5. small sponge urban ecology rainwater storage cell system according to claim 1, which is characterized in that overflow-type rainwater Guard system includes overflow pipe, and the upper end of overflow pipe is connect with concave herbaceous field collection and purification system, the lower end of overflow pipe and rainwater Inspection socket connection.

6. small sponge urban ecology rainwater storage cell system according to claim 5, which is characterized in that overflow pipe it is upper End is equipped with overflow port, and overflow port is set in concave herbaceous field collection and purification system, and the lower end of overflow pipe connects rainy transverse drainage Pipe, rain dewatering horizontal tube and rainwater inspection socket connection.

7. small sponge urban ecology rainwater storage cell system according to claim 1, which is characterized in that rainwater storage tank The water inlet of system is lower than the permeable face of concave herbaceous field collection and purification system, and the entrance of concave herbaceous field collection and purification system is high Journey is lower than the import of overflow-type rainwater guard system.

8. small sponge urban ecology rainwater storage cell system according to claim 1, which is characterized in that rainwater storage tank System includes storage pond, is equipped with rainwater reuse in storage pond and pumps, and rainwater reuse pump is connected with rainwater reuse interface tube.

9. small sponge urban ecology rainwater storage cell system according to claim 8, which is characterized in that in storage pond also It is provided with drain pump.

10. small sponge urban ecology rainwater storage cell system according to claim 8, which is characterized in that storage pond Upper end is equipped with rainwater inspection well.