CN212477983U

CN212477983U - Urban rainwater recycling system

Info

Publication number: CN212477983U
Application number: CN202020547996.9U
Authority: CN
Inventors: 周长亮; 罗旸
Original assignee: Qinghai Urban Planning & Design Institute Co ltd
Current assignee: Qinghai Urban Planning & Design Institute Co ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-02-05
Anticipated expiration: 2030-04-14

Abstract

The utility model relates to an urban rainwater handles technical field, concretely relates to urban rainwater recycle system, including urban rainwater pipe network, filtering ponds, effluent water sump, abandon class pond and water supply equalizing basin, realize the filtration to the rainwater through filtering ponds and abandon class pond in this system, the final emission of filterable sewage is at effluent water sump centralized processing, and the clear water after the filtration is stored in order to wait to use in the water supply equalizing basin, this system overall structure is simple, and convenient construction possesses fine filter effect to the rainwater simultaneously, and very suitable some small-size cities use not only alleviates the crisis of urban water resource shortage, also can help alleviateing municipal drainage pipe network's pressure simultaneously, has reduced the emergence of urban waterlogging, and the following will specifically do detailed explanation to each equipment in the system.

Description

Urban rainwater recycling system

Technical Field

The utility model relates to an urban rainwater handles technical field, concretely relates to urban rainwater recycle system.

Background

In recent years, along with the rapid development of the urbanization process of China, the urban water resource shortage phenomenon is more serious, and urban waterlogging occurs frequently due to a large amount of rainfall in the flood season. The rainwater resource is used as a renewable resource, so that the danger of urban water resource shortage can be relieved, the pressure of a municipal drainage pipe network can be reduced, and the urban waterlogging is reduced.

Along with the attention of people to rainwater collection and utilization, more and more cities begin to build a rainwater recycling system, and urban rainwater utilization mainly refers to the runoff generated by urban catchment surfaces and is directly utilized after collection, regulation and purification. The rainwater is collected and stored in certain areas such as schools, squares, building roofs, districts and roads and is reused for greening irrigation or car washing, toilet flushing and the like. The utilization technology is easy to master, is a widely applied utilization mode in the initial stage of urban rainwater recycling research, and can produce certain effects on improving regional environment and relieving urban water shortage. Only the current rainwater recycling and utilization needs a slowly developing process and needs to be perfected in continuous progress.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an overall structure is simple, the good urban rainwater recycle system of filter effect.

The utility model adopts the technical proposal that: an urban rainwater recycling system comprising:

the urban rainwater pipe network is used for collecting urban rainwater;

the rainwater collecting device comprises a filtering tank, a first filtering net, a second filtering net, a third filtering net and a fourth filtering net, wherein the filtering tank is used for filtering rainwater collected by an urban rainwater pipe network, the first filtering net is arranged in the filtering tank in a right-inclined mode and divides the filtering tank into an upper water inlet area and a lower water outlet area, the top of the upper water inlet area is communicated with the urban rainwater pipe network through a pipeline, a sewage discharge port is formed in the side wall of the filtering tank of the upper water inlet area and is located at the lowest position of the first filtering net, and a water outlet is formed in the side wall of the;

the sewage tank is used for collecting sewage filtered by the filtering tank and is communicated with a sewage outlet of the upper water inlet area through a pipeline;

the rainwater drainage system comprises a filtering pool, a drainage pool, a mud discharging port, a mud discharging pipe and a sewage pool, wherein the filtering pool is used for filtering rainwater filtered by the filtering pool for the second time;

and the water supply adjusting tank is used for storing the filtered rainwater of the flow discarding pool and is communicated with a water outlet on the flow discarding pool through a pipeline.

The urban rainwater recycling system further includes that the inclined included angle between the first filter screen and the horizontal plane is 5-10 degrees.

The urban rainwater recycling system further comprises an energy dissipation plate vertically arranged in the flow discarding pool, the energy dissipation plate divides the waste flow tank into a right water inlet tank and a left filtering tank, the bottom of the left filtering tank is provided with the sludge discharge port, a detachable second filter screen is obliquely arranged in the left filter tank, the left filter tank is divided into an upper filter area and a sinking mud area by the second filter screen, the depth of the right water inlet tank is less than that of the left filtering tank, the top of the energy dissipation plate is flush with the top of the flow discarding tank, a water inlet channel communicated with the right water inlet tank and the lower filtering area is arranged between the bottom of the energy dissipation plate and the bottom of the right water inlet tank, the right side wall of the right water inlet tank relative to the energy dissipation plate is provided with the water inlet, the left side wall of the left filtering tank relative to the energy dissipation plate is provided with the water outlet, and the water outlet is positioned on the left filtering tank side wall of the upper filtering area.

The urban rainwater recycling system further comprises a water distribution plate vertically arranged in the water inlet channel, the water distribution plate and the energy dissipation plate are integrally formed, a plurality of water distribution holes are formed in the water distribution plate, and the water distribution holes are uniformly arranged on the water distribution plate at intervals.

The urban rainwater recycling system further includes that the bottom of the left filtering tank is funnel-shaped, and the sludge discharge port is located at the lowest position of the bottom of the left filtering tank.

The urban rainwater recycling system further comprises an overflow port arranged on the water supply regulating tank.

The utility model has the advantages that: 1. the system has simple integral structure and convenient construction, has good filtering effect on rainwater, is very suitable for small cities, relieves the crisis of urban water resource shortage, is also beneficial to reducing the pressure of municipal drainage pipe networks and reduces the occurrence of urban waterlogging; 2. the rainwater filtering device has the advantages that the primary filtering of rainwater can be quickly realized through the arranged filtering tank, larger magazine particles can be filtered, the rainwater can be filtered for the second time through the arranged flow discarding tank, meanwhile, when the rainwater is filtered and collected, pollutants can be intercepted below the second filtering net, when the pollutants are gathered more, the pollutants can automatically fall off, when the filtering and collecting are stopped, the rainwater above the second filtering net can automatically become backwashing water, so that the filtering net does not need to be frequently washed, manpower and material resources are saved, the filtering and settling effect is good, and the cleanliness of the rainwater is greatly increased; 3. through the effluent water sump that sets up, can collect the sewage after filtering, the centralized processing of being convenient for discharges, and the environmental pollution that has significantly reduced has carried out green city construction.

Drawings

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

Fig. 2 is a schematic structural diagram of a filtering tank.

FIG. 3 is a schematic view of a discard tank structure.

FIG. 4 is a flow field trace plot when the depth of the right inlet tank is equal to the depth of the left filter tank.

FIG. 5 is a flow field trace plot when the depth of the right inlet tank is less than the depth of the left filter tank.

In the figure: 1. a municipal storm water pipe network; 2. a filtration tank; 3. a first filter screen; 4. an upper water intake zone; 5. a lower water outlet area; 6. a sewage draining outlet; 7. a water outlet; 8. a sewage tank; 9. a flow abandoning pool; 10. a water inlet; 11. a water outlet; 12. a sludge discharge port; 13. a sludge discharge pipeline; 14. an electrically operated valve; 15. a water supply regulating tank; 16. an energy dissipation plate; 17. a right water inlet tank; 18. a left filter tank; 19. a second filter screen; 20. an upper filtering area; 21. a mud sinking area; 22. a water inlet channel; 23. a water distribution plate; 24. an overflow port.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings.

As shown in fig. 1, the urban rainwater recycling system provided by this embodiment includes: urban rainwater pipe network 1, filtering ponds 2, effluent water sump 8, abandon class pond 9 and water supply equalizing basin 15, realize the filtration to the rainwater through filtering ponds 2 and abandon class pond 9 in this system, the final emission of filterable sewage is at effluent water sump 8 centralized processing, the clear water storage after the filtration is in order to wait to use in the water supply equalizing basin 15, this system overall structure is simple, construction convenience, possess fine filter effect to the rainwater simultaneously, it uses to be fit for some small-size cities very much, not only alleviate the crisis of urban water resource shortage, also can help alleviateing municipal drainage pipe network's pressure simultaneously, the emergence of urban waterlogging has been reduced, the following will specifically do detailed explanation to each equipment in the system.

As shown in fig. 1, the urban rainwater pipe network 1 is used for collecting urban rainwater, and the urban rainwater pipe network 1 is a prior art, which is not described in detail herein, and is mainly a rainwater collecting pipeline laid under an urban road surface.

As shown in fig. 1 and 2, the filtering tank 2 is used for primarily filtering rainwater collected by the urban rainwater pipe network 1, a first filtering net 3 is obliquely arranged in the filtering tank 2 to the right, the filtering tank 2 is divided into an upper water inlet area 4 and a lower water outlet area 5 by the first filtering net 3, preferably, an inclined angle between the first filtering net 3 and a horizontal plane may be 5 to 10 degrees, for example, the inclined angle may be set to 6 degrees, and of course, inclined angles of other values may also be adopted, which is not illustrated here. Through this optimization setting, can be when filtering the rainwater, can be best degree make the rainwater in the water inlet zone 4 filter down in the play pool 5, this angle also enables the large granule on the first filter screen 3 simultaneously and pollutes debris under the effect of rainwater, realizes automatic gliding and discharges.

The top of the upper water inlet area 4 is communicated with the urban rainwater pipe network 1 through a pipeline, a drain outlet 6 is arranged on the side wall of the filtering tank of the upper water inlet area 4, the drain outlet 6 is located at the lowest position of the first filtering net 3, so that large-particle pollution impurities on the first filtering net 3 are finally discharged through the drain outlet 6, and a water outlet 7 is arranged on the side wall of the filtering tank of the lower water outlet area 5.

As shown in fig. 1, effluent water sump 8 for collect the filterable sewage of filtering ponds 2, effluent water sump 8 passes through the pipeline and goes up the drain 6 intercommunication in water inlet area, and filtering ponds 2 finally discharges centralized processing in effluent water sump 8 through the final discharge of drain 6 exhaust pollution debris promptly, when using, through carrying out centralized processing to the sewage in effluent water sump 8 and reaching emission standard after, can realize the emission, thereby greatly reduced environmental pollution, carried out green city construction.

As shown in fig. 1, the flow discarding pool 9 is used for performing secondary filtration on the filtered rainwater in the filtering pool 2, a water inlet 10 and a water outlet 11 are arranged on the side wall of the flow discarding pool 9, the water inlet 10 is communicated with a water outlet 7 on the filtering pool 2 through a pipeline, namely, the filtered rainwater in the filtering pool 2 enters the flow discarding pool 9 for secondary filtration, a sludge discharge port 12 is arranged at the bottom of the flow discarding pool 2, the sludge discharge port 12 is communicated with the sewage pool 8 through a sludge discharge pipeline 13, an electric valve 14 is arranged on the sludge discharge pipeline 13, and the filtered sewage in the flow discarding pool 9 is discharged into the sewage pool 8 through the sludge discharge pipeline 13 for centralized treatment.

As shown in fig. 3 specifically, an energy dissipation plate 16 is vertically arranged in the discarding pool 9, the energy dissipation plate 16 divides the discarding pool 9 into a right water inlet pool 17 and a left filtering pool 18, the sludge discharge port 12 is arranged at the bottom of the left filtering pool 18, in order to facilitate the sludge discharge port 12 to discharge sludge, the bottom of the left filtering pool 18 may be configured to be funnel-shaped, the sludge discharge port 12 is located at the lowest position of the bottom of the left filtering pool 18, which is a preferred mode, and for convenience of description of the device, the funnel-shaped left filtering pool 18 will be specifically described below as an example.

The left filter tank 18 is internally provided with a detachable second filter screen 19 in an inclined manner, so that the second filter screen 19 can be clamped with the left filter tank 18, the detachable connection of the second filter screen 19 and the left filter tank 18 is realized, and other detachable modes can be adopted, which are not illustrated here. As shown in fig. 1, the second filter 19 is disposed to be inclined to the right, and the specific inclination angle of the second filter 19 may be determined according to the size of the left filter tank 18, which is not limited herein. The device is when filtering the rainwater and collecting, and the pollutant can be held back in second filter screen 19 below, and when the pollutant gathering was more, the pollutant can drop automatically, filters when collecting and stopping, can become the backwashing water automatically at the rainwater of second filter screen 19 top, consequently need not often to wash the filter screen, has saved manpower and materials.

The second filter screen 19 divides the left filter tank into an upper filter area 20 and a lower sludge area 21, the depth of the right inlet tank 17 is smaller than that of the left filter tank 18, the top of the energy dissipation plate 16 is flush with the top of the flow abandoning tank 9, a water inlet channel 22 communicating the right inlet tank with the lower filter area is arranged between the bottom of the energy dissipation plate 16 and the bottom of the right inlet tank 17, the depth of the right inlet tank 17 is smaller than that of the left filter tank 18, and the sedimentation effect can be greatly increased by this arrangement, as shown in fig. 4 and 5, the position of the water inlet channel 22 in fig. 5 is higher than that of the water inlet channel 22 in fig. 4, the position of the water inlet channel 22 in fig. 4 is lower, the liftable height of the water flow is higher than that of the water flow in fig. 5, and the pollutants can sink in the ascending process, however, the lower sludge area 21 in fig. 4 is influenced by the water inlet, so that the pollutants having fallen to the bottom of the left filter tank are brought into the upper sludge area 21, secondary scouring is formed, which is extremely disadvantageous to the accumulation of pollutants. In a reverse view of fig. 5, since the position of the water inlet channel 22 is higher, the vortex position caused by the water flow changes, and the vortex position moves downward, although the vortex also generates a certain disturbance to the settled pollutants, compared with fig. 4, the vortex with a lower flow rate has a smaller influence on the overall settling effect, thereby greatly improving the settling effect of the pollutants.

In order to further eliminate the vortex in the subsidence mud area 21 and make the water flow entering the subsidence mud area 21 more uniformly distributed, a water distribution plate 23 may be vertically disposed in the water inlet channel 22, specifically, as shown in fig. 3, the water distribution plate 23 is integrally formed with the energy dissipation plate 16, a plurality of water distribution holes are disposed on the water distribution plate 23, the water distribution holes are uniformly spaced on the water distribution plate 23, the number of the specific water distribution holes is determined by the size of the water distribution plate 23, and no specific limitation is made here, so that the setting of the water distribution plate 23 can increase the subsidence mud effect without affecting the filtration.

The right side wall of the right water inlet tank 17 relative to the energy dissipation plate is provided with the water inlet 10, the left side wall of the left filtering tank 18 relative to the energy dissipation plate is provided with the water outlet 11, and the water outlet 11 is positioned on the left filtering tank side wall of the upper filtering area. The rainwater flow direction in the abandoning pool 9 is as follows: the rainwater firstly coming from the water outlet 7 of the filtering tank 2 enters the right water inlet tank 17 from the water inlet 10, then enters the sinking mud zone 21 through the water inlet channel 22, enters the upper filtering zone 20 after being filtered by the second filtering screen 19, and finally is left from the water outlet 11. In the flowing process of rainwater, through the arranged energy dissipation plate 16, when rainfall intensity is high, rainwater entering the right water inlet pool 17 firstly impacts the energy dissipation plate 16, then the flow velocity is reduced when entering the subsidence mud area 21, and a certain energy dissipation effect is achieved.

As shown in fig. 1, the water supply regulating reservoir 15 is used for storing the filtered rainwater in the discarding pool 9, the water supply regulating reservoir 15 is communicated with the water outlet 11 on the discarding pool 9 through a pipeline, namely, the filtered rainwater in the discarding pool 9 is finally stored in the water supply regulating reservoir 15, and the rainwater in the water supply regulating reservoir 15 can be used for greening irrigation or car washing, toilet flushing and the like, so that the recycling of the rainwater is realized, and the preference is given. An overflow port 24 may be provided on the water supply regulation tank 15 so that a portion of the rainwater may overflow when the water supply regulation tank 15 is filled with water, and the portion of the overflowing rainwater may be discharged to a wetland or other places through a pipe, which will not be described in detail herein. The system is simple in overall structure and convenient to construct, rainwater is recycled, meanwhile, sewage discharge is avoided, and the environment is protected.

The present invention is not limited to the above-mentioned examples, and various modifications and changes which can be made by those skilled in the art without creative efforts are protected by the present patent within the scope defined by the claims of the present invention.

Claims

1. Urban rainwater recycle system, its characterized in that includes:

the urban rainwater pipe network is used for collecting urban rainwater;

2. The urban rainwater recycling system according to claim 1, characterized in that: the inclined included angle between the first filter screen and the horizontal plane is 5-10 degrees.

3. The urban rainwater recycling system according to claim 1, characterized in that: the waste flow tank is vertically provided with an energy dissipation plate, the energy dissipation plate divides the waste flow tank into a right water inlet tank and a left filter tank, the bottom of the left filter tank is provided with the sludge discharge port, a detachable second filter screen is obliquely arranged in the left filter tank, the left filter tank is divided into an upper filter area and a lower filter area by the second filter screen, the depth of the right water inlet tank is smaller than that of the left filter tank, the top of the energy dissipation plate is flush with the top of the waste flow tank, a water inlet channel communicated with the right water inlet tank and the lower filter area is arranged between the bottom of the energy dissipation plate and the bottom of the right water inlet tank, the right water inlet tank is provided with the water inlet relative to the right side wall of the energy dissipation plate, the left filter tank is provided with the water outlet relative to the left side wall of the energy dissipation plate, and the water outlet is positioned.

4. The urban rainwater recycling system according to claim 3, characterized in that: the water distribution plate is vertically arranged in the water inlet channel, the water distribution plate and the energy dissipation plate are integrally formed, a plurality of water distribution holes are formed in the water distribution plate, and the water distribution holes are evenly distributed on the water distribution plate at intervals.

5. The urban rainwater recycling system according to claim 4, characterized in that: the left filtering tank bottom is funnel-shaped, and the sludge discharge port is located at the lowest position of the left filtering tank bottom.

6. The urban rainwater recycling system according to claim 1, characterized in that: and an overflow port is arranged on the water supply regulating tank.