CN207878550U - A kind of rainwater-collecting purification system for sponge city - Google Patents

Abstract

The utility model is related to sewerage system fields,Disclose a kind of rainwater-collecting purification system for sponge city,It solves the problems, such as that initial rainwater seriously affects to store Rainwater Quality and aggravate rainwater purification pressure,Including rain collection well,Water storage box,Separator,Processing unit and water storage device,Separator includes three-way magnetic valve,Input pipe,First water pump,First water-supply-pipe is with the second water-supply-pipe,First water pump is set on the first water-supply-pipe,Input pipe both ends are connect with the import of rain collection well and three-way magnetic valve respectively,It first water-supply-pipe and is connected respectively with two of three-way magnetic valve outlets with the second water-supply-pipe,Processing unit includes the processing pond being connect with the first water-supply-pipe,It is set to multiple activity carbon slabs in processing pond and floats on biological floating bed in processing pond,The side wall of processing pond is connected with processing tube,The processing valve of control process pipe flow is installed in processing tube and outlet is connected with drainage block；Improve the water quality for storing rainwater.

Description

A rainwater collection and purification system for sponge cities

technical field

The utility model relates to the field of urban drainage systems, in particular to a rainwater collection and purification system for sponge cities.

Background technique

Sponge city is a new generation of urban stormwater management concept. It refers to the city's good "elasticity" in adapting to environmental changes and responding to natural disasters caused by rainwater. It can also be called "water elastic city". The international general term is "low-impact development stormwater system construction". When it rains, it absorbs, stores, infiltrates, and purifies water, and "releases" the stored water for use when needed.

In the Chinese patent with the notification number CN205502122U, a rainwater collection and purification system for urban greening is disclosed, which includes an anti-blocking and permeable pavement structure, a sand distribution pool for distributing rainwater, and a purification and storage tank for filtering rainwater and infiltration wells for rainwater infiltration. The anti-blocking and permeable pavement structure, the sand distribution pool, the purification storage tank and the permeation well are connected in sequence through the pipeline, and the permeation well is connected to the green belt storage tank through the pipeline.

However, rainwater dissolves a large amount of acid gases in the air, vehicle exhaust, factory exhaust gas and other polluting gases, and when the initial rainwater washes the ground, it carries a large amount of organic matter, pathogens, heavy metals, grease, suspended solids and other pollutants. The initial rainwater of ~5mm is generally seriously polluted and the flow rate is relatively small. If both the initial rainwater and the middle and late rainwater are stored in the storage device, the water quality of the stored rainwater will be seriously affected, and the pressure of rainwater purification will be increased.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a rainwater collection and purification system for sponge cities, so as to improve the water quality of stored rainwater.

In order to achieve the above object, the utility model provides the following technical solutions:

A rainwater collection and purification system for a sponge city, including a rainwater collection well and a water storage tank, a cover plate is provided at the opening of the rainwater collection well, and a through hole is provided on the cover plate to facilitate the entry of rainwater. A separation device for middle and late rainwater, a treatment device for treating initial rainwater, and a water storage device for storing middle and late rainwater. The separation device includes a three-way solenoid valve, an input pipe, a first water pump, a first water delivery pipe and a second Water pipe, the first water pump is arranged on the first water pipe, the two ends of the input pipe are respectively connected with the rainwater collection well and the inlet of the three-way solenoid valve, the first water pipe and the second water pipe are respectively connected with the two ports of the three-way solenoid valve The treatment device includes a treatment tank connected to the first water delivery pipe, a plurality of activated carbon plates arranged in the treatment tank and an ecological floating bed floating on the treatment tank. The side wall of the treatment tank is connected with a treatment pipe, and the treatment pipe is equipped with a processing pipe. A treatment valve that controls the flow of the treatment tube and is connected to a filter block at the outlet.

Using the above technical scheme, by setting the three-way solenoid valve, at the initial stage of rainfall, the three-way solenoid valve is powered off, the second water delivery pipe is closed, and the first water delivery pipe is turned on, so that the initial rainwater passes through the rainwater collection well, the first water delivery pipe and When the initial rainwater touches the activated carbon plate when it flows into the treatment tank, the activated carbon plate will absorb the fine substances in the initial rainwater, remove organic matter, heavy metals, synthetic detergents, bacteria, viruses and radioactive pollutants, and realize the protection of the initial rainwater to a certain extent. Purify, and use the aquatic plants on the ecological floating bed to purify the initial rainwater and improve the greening of the city;

After the initial rainwater is purified to a certain extent in the treatment tank, the treatment valve is opened and the treatment pipe is turned on, so that the water in the treatment tank flows into the ground, which is beneficial to the circulation of groundwater and reduces the lack of groundwater caused by a large amount of water storage;

In the middle and late stages of rainfall, the three-way solenoid valve is energized, the first water pipe is closed, the second water pipe is turned on, and the rainwater in the middle and late stages passes through the rainwater collection well, the second water pipe, and flows into the corresponding water storage device, thereby realizing Separate the initial rainwater from the middle and late rainwater to improve the water quality of stored rainwater.

Further, it is characterized in that the distance between the treatment pipe and the bottom of the treatment pool is not less than the height of the ecological floating bed.

By adopting the above technical scheme, the treatment pipe has a certain distance from the bottom surface of the treatment tank, thereby ensuring the basic water level requirements of the aquatic plants on the ecological floating bed and improving the life span of the aquatic plants.

Further, the bottom of the ecological floating bed is provided with a placement box for placing the microbial water purifying agent.

By adopting the above technical scheme, the growth of harmful microorganisms in the initial rainwater is inhibited by the use of microbial water purifiers, which reduces the eutrophication of the water body; it has a rapid elimination and decomposition effect on oil stains and floating dirt on the water surface; A large amount of harmful substances can prevent repeated pollution, thereby improving the water quality of initial rainwater.

Further, the bottom of the treatment tank is provided with a connection port, and the treatment tank is provided with an air-permeable and anti-seepage membrane that closes the connection port.

By adopting the above technical scheme, the dissolved oxygen of the initial rainwater in the treatment tank is increased by setting the air-permeable anti-seepage membrane, the water quality of the initial rainwater is improved, and the growth of aquatic plants is beneficial.

Further, the water storage device includes a water storage tank and a clean water tank, the water storage tank is connected to the second water delivery pipe and is located under the rainwater collection well, the clean water tank is located under the water storage tank, and there is a transmission line between the water storage tank and the clean water tank. The delivery pipe is provided with a delivery valve to control the flow rate of the delivery pipe.

With the above technical scheme, when the three-way solenoid valve is energized, the middle and late rainwater flows into the water storage tank, thereby alleviating the drainage pressure of the city and achieving the effect of water storage; by opening the delivery valve, the middle and late rainwater in the water storage tank flows into the net In the water tank and under the action of the purification component, the middle and late rainwater is purified, so as to meet the use standard.

Further, the water storage tank is connected with a drainage pipe for directly using the middle and late rainwater, and the drainage pipe is provided with a drainage pump and a drainage valve.

With the above technical solution, through the setting of the drainage pump and the drainage valve, when it is necessary to carry out projects that do not require high water quality such as car washing and road cleaning, the middle and late rainwater is directly extracted from the water storage tank, which reduces the pressure on the clean water tank.

Further, multiple fixing frames are arranged in the water storage tank.

By adopting the above technical solution, the overall stability of the water storage tank is improved by setting the fixing frame.

Further, it also includes a filter barrel with an inclined bottom surface, an annular groove is opened at the opening of the rainwater collection well, and an annular block abutting against the annular groove is fixed on the side wall of the filter barrel.

With the above technical scheme, the rainwater flowing into the input pipe is pre-filtered by setting the filter barrel; the probability of blockage of the filter barrel is reduced by setting the inclined bottom surface; Rapid transfer of particles.

Compared with the prior art, the utility model has the advantages of:

(1) By setting a three-way solenoid valve, the initial rainwater and the middle and late rainwater are separated to improve the water quality of the stored rainwater;

(2) Use activated carbon plates and ecological floating beds to absorb and adsorb pollutants in the initial rainwater to a certain extent, and improve the water quality of the initial rainwater;

(3) In the middle and late stages of rainfall, the rainwater in the middle and late stages flows into the corresponding water storage device, so that the collection of rainwater in the middle and late stages has the advantage of water storage.

Description of drawings

Fig. 1 is a structural schematic diagram of the present embodiment, showing the overall structure;

Fig. 2 is an enlarged view of part A in Fig. 1, showing the connection relationship between the filter bucket and the rainwater collection well.

Reference signs: 1, rainwater collection well; 2, cover plate; 3, separation device; 31, three-way solenoid valve; 32, input pipe; 33, first water delivery pipe; 34, first water pump; 35, second delivery pipe Water pipe; 4. Treatment device; 41. Treatment tank; 42. Activated carbon plate; 43. Ecological floating bed; 5. Water storage device; 51. Water storage tank; 52. Clean water tank; 6. Placement box; ; 8, processing pipe; 9, water filter block; 10, processing valve; 11, delivery pipe; 12, delivery valve; 13, sewage pipe; 14, fixed frame; 15, drainage valve; 16, drainage pump; 17, filtration Bucket; 18, ring block; 19, drainage tube.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail.

A rainwater collection and purification system for a sponge city, as shown in Figure 1, includes a rainwater collection well 1, a water storage tank, a separation device 3, a treatment device 4 and a water storage device 5, and the separation device 3 includes a three-way solenoid valve 31 , when the three-way solenoid valve 31 is powered off, the initial rainwater is introduced into the treatment device 4 and the initial rainwater is treated and purified; Thereby giving the advantages of separating the initial rainwater and the middle and late rainwater.

The separation device 3 also includes an input pipe 32, a first water delivery pipe 33, a first water pump 34 and a second water delivery pipe 35. The input pipe 32 is connected to the bottom of the rainwater collection well 1 and connected to the inlet of the three-way solenoid valve 31. The first The water pump 34 is installed on the first water delivery pipe 33, and the first water pump 34 and the second water delivery pipe 35 are respectively connected to the two outlets of the three-way solenoid valve 31. When the three-way solenoid valve 31 is energized, the first water delivery pipe 33 is closed, and the second The second water delivery pipe 35 is turned on; when the three-way solenoid valve 31 is powered off, the second water delivery pipe 35 is closed, and the first water delivery pipe 33 is turned on.

Treatment device 4 comprises treatment pond 41, activated carbon plate 42, ecological floating bed 43, and the first water delivery pipe 33 is connected with the side wall of treatment pond 41, and activated carbon plate 42 is perpendicular to the bottom surface of treatment pond 41, thereby treats the initial stage rainwater in treatment pond 41 Purify the pollutants in the water; aquatic plants are planted on the ecological floating bed 43, which can absorb the pollutants of the initial rainwater and improve the greening of the city; the bottom of the ecological floating bed 43 is provided with a placement box 6, which is used for placing Microbial water purifying agent, thereby the microorganism in initial stage rainwater is purified; The bottom of treatment tank 41 is provided with connection port, and treatment tank 41 is provided with the breathable anti-seepage membrane 7 of sealing connection port, thereby improves the dissolved oxygen of initial stage rainwater, has improved Water quality of initial rainwater.

The side wall of treatment pond 41 is fixedly connected with treatment pipe 8, and the bottom surface distance of treatment pipe 8 and treatment pond 41 is higher than or equal to the height of ecological floating bed 43, thereby guaranteeing the water level requirement of aquatic plants; A filter block 9 is connected to one end, and a treatment valve 10 is arranged on the treatment pipe 8 . After the initial rainwater is purified for a certain period of time, the treatment pipe 8 is connected through the treatment valve 10, and the initial rainwater in the treatment pool 41 flows into the groundwater through the treatment pipe 8 and the filter block 9.

The water storage device 5 includes a water storage tank 51, and a fixed frame 14 is arranged in the water storage tank 51, thereby improving the stability of the water storage tank 51; A drainage pipe 19 is connected to the top of the drainage pipe 19, and a drainage valve 15 and a drainage water pump 16 are connected to the drainage pipe 19. The drainage water pump 16 and the drainage valve 15 are synchronously conducted, so that when it is necessary to carry out a project that does not require high water quality, the drainage water pump 16 is started and Opening the diversion valve 15 has the advantage of quickly using the rainwater in the middle and late stages.

The water storage device 5 also includes a clean water tank 52, the clean water tank 52 is located below the water storage tank 51, the second water delivery pipe 35 is connected to the water storage tank 51, and a delivery pipe 11 is connected between the water storage tank 51 and the clean water tank 52, A delivery valve 12 is installed on the delivery pipe 11 , and a purification component (not shown in the figure) is arranged in the clean water tank 52 and is connected with a sewage discharge pipe 13 . In the middle and late stages of rainfall, the rainwater in the middle and late stages is stored in the water storage tank 51, and then the delivery valve 12 is opened, and the rainwater in the middle and late stages flows into the clean water tank 52 for purification. After the purification is completed, the purified rainwater is transported to the water storage tank. Inside, the impurities are discharged through the sewage pipe 13.

As shown in Figures 1 and 2, a filter barrel 17 is provided in the rainwater collection well 1, and the bottom and side walls of the filter barrel 17 are provided with water outlet holes. There is a coaxial annular groove, and the side wall of the filter barrel 17 is fixed with an annular block 18 that abuts against the annular groove. When the annular groove and the annular block 18 abut, the stable installation of the filter barrel 17 is achieved, and the filter barrel 17 is fixed. Detachable, the filter barrel 17 is fixed with a handle, and the handle is fixed with non-slip rubber, so as to facilitate the rapid transfer of impurities; the opening of the rainwater collection well 1 is provided with a cover plate 2, and a through hole is opened on the cover plate 2 to avoid large particles Matter enters the rainwater collection well 1.

The specific implementation method of this embodiment: when in the early stage of rainfall, the three-way solenoid valve 31 is powered off, and the initial rainwater passes through the rainwater collection well 1-filter bucket 17-input pipe 32-first water pipe 33-treatment pool 41 successively, and Under the action of ecological floating bed 43 and activated carbon plate 42, it is purified, and after a period of time, it is discharged into the ground through the treatment pipe 8; in the middle and late stages of rainfall, the rainwater in the middle and late stages of the three-way solenoid valve 31 is energized, and the rainwater passes through the rainwater collection well 1-filter barrel in sequence 17—Input pipe 32—Second water delivery pipe 35—Water storage tank 51, then lead out through the drainage pipe 19 or deliver to the clean water tank 52 through the delivery pipe 11.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new inventions are protected by patent law.

Claims (8)

1. A rainwater collection and purification system for a sponge city, comprising a rainwater collection well (1) and a water storage tank, the opening of the rainwater collection well (1) is provided with a cover plate (2), and the cover plate (2) is provided with a convenient The through hole for rainwater to enter is characterized in that it also includes a separation device (3) for separating early rainwater and middle and late rainwater, a treatment device (4) for treating early rainwater, and a water storage for storing middle and late rainwater Device (5), separation device (3) comprises three-way solenoid valve (31), input pipe (32), first water pump (34), first water delivery pipe (33) and second water delivery pipe (35), the first The water pump (34) is arranged on the first water delivery pipe (33), and the two ends of the input pipe (32) are respectively connected with the inlet of the rainwater collection well (1) and the three-way solenoid valve (31), the first water delivery pipe (33) and and the second water delivery pipe (35) are respectively connected with two outlets of the three-way electromagnetic valve (31), and the treatment device (4) includes a treatment pool (41) connected with the first water delivery pipe (33), arranged in the treatment pool ( A plurality of activated carbon plates (42) in 41) and the ecological floating bed (43) floating on the treatment pond (41), the side wall of the treatment pond (41) is connected with a treatment pipe (8), and the treatment pipe (8) is installed There is a treatment valve (10) for controlling the flow of the treatment pipe (8), and the outlet is connected with a filter block (9). 2. A kind of rainwater collection and purification system for sponge city according to claim 1, is characterized in that, the distance between the treatment pipe (8) and the bottom of the treatment pool (41) is not less than the height of the ecological floating bed (43) . 3. A rainwater collection and purification system for sponge city according to claim 2, characterized in that, the bottom of the ecological floating bed (43) is provided with a placement box (6) for placing microbial water purifiers. 4. A kind of rainwater collection and purification system for sponge city according to claim 3, it is characterized in that, the bottom of treatment pond (41) offers connection port, and treatment pond (41) is provided with the breathable anti-ventilation of closed connection port. Permeable membrane (7). 5. A kind of rainwater collection and purification system for sponge city according to claim 1, is characterized in that, water storage device (5) comprises water storage tank (51) and clean water tank (52), water storage tank (51) It is connected with the second water delivery pipe (35) and is positioned under the rainwater collection well (1), the clean water tank (52) is positioned under the water storage tank (51) and is provided with purification components for purifying middle and late rainwater, and the water storage tank (51 ) and the clean water tank (52) are connected with a conveying pipe (11), and the conveying pipe (11) is provided with a conveying valve (12) for controlling the flow rate of the conveying pipe (11). 6. A kind of rainwater collection and purification system for sponge city according to claim 5, characterized in that, the water storage tank (51) is connected with a drainage pipe (19) for direct use of rainwater in the middle and later stages, and the drainage pipe (19) is A drainage water pump (16) and a drainage valve (15) are provided. 7. A rainwater collection and purification system for a sponge city according to claim 5, characterized in that, a plurality of fixing frames (14) are arranged in the water storage tank (51). 8. A rainwater collection and purification system for a sponge city according to claim 1, characterized in that it also includes a filter bucket (17) with an inclined bottom surface, and an annular Groove, the side wall of filter bucket (17) is fixed with the annular block (18) that abuts with annular groove.