Rainwater treatment system for supplementing water to landscape pool

Abstract

The utility model discloses a rainwater treatment system for water replenishing of a landscape pool, which comprises a water collecting and distributing well, a rainwater rotational flow filtering device, a rainwater purifying pool and a water supply device which are connected in sequence, and the water collecting and distributing well is used for controlling drainage and collection of rainwater. The rainwater rotational flow filtering device is used for centrifuging and filtering rainwater, the rainwater purifying pond is used for purifying the rainwater, storing the rainwater and sterilizing bacteria and the like in the treated rainwater, and the water supply device is used for conveying the treated rainwater to the landscape water pond. According to the utility model, the deep treatment of rainwater is realized, and the rainwater is used as the landscape water body to supplement water, thereby practicing the idea of sponge cities.

Description

Technical Field

[0001] The utility model belongs to the technical field of sponge cities, and in particular relates to a rainwater treatment system for replenishing water in a landscape pool. Background Art

[0002] my country is a country with water shortage, uneven distribution in time and space, and low water resource utilization rate. With the advancement of industrialization and urbanization in my country, the urban population has increased significantly, further exacerbating the problem of urban water shortage. The utilization of rainwater resources can reduce urban expenses, alleviate the operating pressure of urban sewage treatment plants in the rainy season, and improve the urban water environment. It is an effective measure to form a healthy urban cycle.

[0003] With the improvement of people's living standards and the gradual increase in the demand for environmental aesthetics, landscape pools such as fountain pools and ecological ponds are built in many city squares or communities. These water bodies are generally large in area and shallow in depth, so the water evaporates a lot and often needs to be replenished. If municipal tap water is used as the replenishment water source for landscape water bodies, the price of tap water is high, and the water quality index is higher than the landscape water quality standard, which will cause unnecessary waste of resources. If the surrounding rainwater is collected, processed and reused, it will greatly save the cost of landscape pool operation and improve the utilization rate of rainwater resources.

[0004] Due to the heavy traffic volume on motor vehicle lanes, rainwater on the road surface is seriously polluted by organic matter. If rainwater from non-motor vehicle lanes, sidewalks and squares is collected and utilized, it can bring huge economic benefits. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a rainwater treatment system for replenishing water in a landscape pool. The utility model has a simple structure and uses few electrical devices. It can collect and purify rainwater on the road surface, achieve deep purification of rainwater, and use it for replenishing water in the landscape pool. In addition, the utility model also provides a rainwater treatment method for replenishing water in a landscape pool.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect of the utility model, a rainwater treatment system for replenishing water in a landscape pool is provided, comprising a water collection diversion well, a rainwater cyclone filter device, a rainwater purification pool and a water supply device connected in sequence;

[0008] The rainwater cyclone filter device comprises an outer cylinder, an inner cylinder, a cyclone water inlet pipe, an overflow pipe, a guide plate, a filter module, and a filtered water outlet pipe. The inner cylinder is arranged on the upper part of the outer cylinder. The tops of the inner cylinder and the outer cylinder are both closed ends, and the bottom of the inner cylinder is an open end. An annular cavity structure is formed between the outer cylinder and the inner cylinder. The cyclone water inlet pipe is tangentially connected to the annular cavity structure. The upper end of the overflow pipe extends out of the inner cylinder and the top of the outer cylinder. The overflow pipe is The lower end of the flow tube extends out of the bottom of the internal cylinder, the guide plate is installed at the lower end of the overflow pipe, the guide plate is arranged in an annular trumpet shape, the maximum diameter of the guide plate is slightly smaller than the diameter of the internal cylinder, the upper end of the overflow pipe is connected to the rainwater purification tank, the lower part of the guide plate is a mud storage area, the filter module is arranged around the overflow pipe in the internal cylinder, one end of the filtered water outlet pipe is connected to the internal cylinder and is located at the upper part of the filter module, and the other end of the filtered water outlet pipe is connected to the rainwater purification tank.

[0009] As a preferred technical solution, the water coming from the water collection diversion well includes at least one of rainwater in the rainwater collection pipe and rainwater transferred from the grass-planting ditch.

[0010] As a preferred technical solution, the height of the highest point of the overflow pipe is higher than the height of the highest point of the filtered water outlet pipe; the bottom of the mud storage area is connected to a mud discharge pipe, and a mud discharge valve is provided on the mud discharge pipe.

[0011] As a preferred technical solution, the rainwater purification tank includes a filtered water inlet pipe, an overflow water inlet pipe, an enhanced filtration area, an adsorption area, a disinfection water storage area, a partition, a first filter screen, a second filter screen and a disinfectant dosing device. A partition is arranged between the adsorption area and the disinfection water storage area. The adsorption area is connected to the lower part of the disinfection water storage area and a second filter screen is arranged at the connection point. The filtered water outlet pipe is connected to the filtered water inlet pipe, and the overflow pipe is connected to the overflow water inlet pipe. The enhanced filtration area is arranged at the end of the overflow inlet pipe. A first filter screen is arranged between the enhanced filtration area and the adsorption area. The filtered water inlet pipe is connected to the adsorption area, and the disinfectant dosing device is connected to the disinfection water storage area.

[0012] As a preferred technical solution, the mesh diameter of the first filter is smaller than the particle size of the filter material filled in the enhanced filtration area, and the mesh diameter of the second filter is smaller than the particle size of the filter material filled in the adsorption area.

[0013] As a preferred technical solution, the water supply device includes a submersible pump and a water supply pipeline, and the submersible pump is arranged in the disinfection water storage area.

[0014] As a preferred technical solution, the water collection diversion well includes a well body, an overflow weir plate, a rainwater inlet pipe, a first outlet pipe, and a second outlet pipe. The overflow weir plate is installed in the well body, and the rainwater inlet pipe, the first outlet pipe, and the second outlet pipe are all installed on the well body. The rainwater inlet pipe and the first outlet pipe are located on one side of the overflow weir plate, and the rainwater inlet pipe and the second outlet pipe are located on both sides of the overflow weir plate. The first outlet pipe is connected to the municipal sewage pipe, and the second outlet pipe is connected to the rainwater cyclone filter device.

[0015] As a preferred technical solution, the rainwater inlet pipe is installed at the upper part of the well body, and the first outlet pipe and the second outlet pipe are installed at the lower part of the well body.

[0016] A method for treating rainwater using a rainwater treatment system for replenishing a landscape pool according to the utility model comprises the following steps:

[0017] Step 1: Rainwater transferred through rainwater collection pipes or grass-planted ditches enters the water collection diversion well. When the initial rainfall is small, the initial rainwater with a high pollutant content enters the municipal sewage pipe. When the mid-to-late rainfall is large, the rainwater enters the rainwater cyclone filter device;

[0018] Step 2: The swirl inlet pipe enters the annular area between the outer cylinder and the inner cylinder tangentially to form a downward swirl. The rainwater swirls downward to the guide plate. The large suspended particles thrown to the outside by centrifugal force enter the mud storage area downward and are removed from the water. The cleaner rainwater inside the swirl is guided by the outer wall of the guide plate and enters the annular space between the inner cylinder and the outer wall of the overflow pipe upward. Driven by the water pressure, it enters the filter module upward. The rainwater filtered by the filter material enters the rainwater purification tank through the filtered water outlet pipe. When the filter layer is blocked or the water flow is too large, part of the rainwater directly enters the rainwater purification tank through the overflow pipe;

[0019] Step 3: After the rainwater entering the rainwater purification pool is adsorbed and disinfected, it is transported to the landscape pool by the water supply device.

[0020] The utility model divides water in the water collection diversion well, and the heavily polluted initial rainwater is discharged to the municipal sewage pipe network, and the cleaner rainwater in the later period enters the subsequent rainwater cyclone filter device for treatment. The rainwater cyclone filter uses cyclone centrifugation and filter material layer filtration to remove most of the suspended matter in the rainwater. Then the rainwater enters the rainwater purification pool and removes phosphorus and organic matter in the water through the adsorption effect of the filter material in the adsorption area, and completes disinfection in the water storage area. Finally, the landscape pool is replenished with water through the water supply system.

[0021] Compared with the prior art, the utility model has the following technical effects: the utility model integrates multiple treatment devices to form a complete rainwater purification module. The system consumes few electrical devices, has a simple structure, is easy to maintain, and efficiently utilizes rainwater resources to provide a water source for landscape waterscapes, thus practicing the concept of a sponge city. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a rainwater treatment system for replenishing water in a landscape pool according to the utility model.

[0024] Figure 2 It is a plan view of the water collection and diversion well of the utility model.

[0025] Figure 3 It is a schematic longitudinal section diagram of the water collection and diversion well of the utility model.

[0026] Figure 4 It is a plan view of the rainwater cyclone filter device of the utility model.

[0027] Figure 5 It is a schematic longitudinal section diagram of the rainwater cyclone filter device of the utility model.

[0028] Figure 6 It is a plan view of a rainwater purification pool of the utility model.

[0029] Figure 7 It is a schematic longitudinal section diagram of the rainwater purification pool of the utility model.

[0030] Among them, the specific description of the accompanying drawings is as follows: water collection diversion well 1, rainwater cyclone filter device 2, rainwater purification tank 3, water supply device 4, well body 11, overflow weir plate 12, rainwater inlet pipe 13, first outlet pipe 14, second outlet pipe 15, external cylinder 21, internal cylinder 22, cyclone inlet pipe 23, filtered water outlet pipe 24, overflow pipe 25, guide plate 26, filter module 27, mud discharge pipe 28, mud discharge valve 29, mud storage area 210, overflow water inlet pipe 31, filtered water inlet pipe 32, first filter screen 33, partition 34, second filter screen 35, enhanced filtration area 36, ​​adsorption area 37, disinfection water storage area 38, disinfectant dosing device 39, submersible pump 40. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] like Figure 1-Figure 7 As shown, this embodiment provides a rainwater treatment system for replenishing water in a landscape pool, which is connected in sequence to a water collection diversion well 1, a rainwater cyclone filter device 2, a rainwater purification pool 3, and a water supply device 4. Among them, the water collection diversion well 1 is used to control the discharge and collection of rainwater, the rainwater cyclone filter device 2 is used to centrifuge and filter rainwater, the rainwater purification pool 3 is used to purify rainwater, store rainwater, and disinfect bacteria in the treated rainwater, and the water supply device 4 is used to transport the treated rainwater to the landscape pool.

[0033] In this embodiment, the water collection and diversion well 1 includes a well body 11, an overflow weir plate 12, a rainwater inlet pipe 13, a first outlet pipe 14, and a second outlet pipe 15. The overflow weir plate 12 is installed in the well body 11, and the rainwater inlet pipe 13, the first outlet pipe 14, and the second outlet pipe 15 are all installed on the well body 11. The rainwater inlet pipe 13 and the first outlet pipe 14 are located on one side of the overflow weir plate 12, and the rainwater inlet pipe 13 and the second outlet pipe 15 are located on both sides of the overflow weir plate 12. The first outlet pipe 14 is connected to the municipal sewage pipe, and the second outlet pipe 15 is connected to the rainwater cyclone filter device 2. The rainwater inlet pipe 13 is installed at the upper part of the well body 11, and the first outlet pipe 14 and the second outlet pipe 15 are installed at the lower part of the well body 11. When the rainfall is small, the initial rainwater with high pollutant content is discharged into the municipal sewage pipe through the first outlet pipe 14. When the rainfall in the middle and late stages is large, the rainwater overflows the overflow weir plate 12 and enters the subsequent treatment process through the outlet pipe. The height and position of the overflow weir plate 12 can be designed according to the size of the water collection well 11 and the initial rainfall that needs to be discarded.

[0034] The rainwater cyclone filter device 2 is the core of the system, including an outer cylinder 21, an inner cylinder 22, a cyclone water inlet pipe 23, an overflow pipe 25, a guide plate 26, a filter module 27, and a filtered water outlet pipe 24. The inner cylinder 22 is arranged on the upper part of the outer cylinder 21. The tops of the inner cylinder 22 and the outer cylinder 21 are both closed ends, and the bottom of the inner cylinder 22 is an open end. An annular cavity structure is formed between the outer cylinder 21 and the inner cylinder 22. The cyclone water inlet pipe 23 is tangentially connected to the annular cavity structure, so that rainwater enters along the cylinder tangentially, which is easy to form a cyclone flow state. The upper end of the overflow pipe 25 extends out of the top of the inner cylinder 22 and the outer cylinder 21, and the upper end of the overflow pipe 25 extends out of the top of the inner cylinder 22. The guide plate 26 is installed at the lower end of the overflow pipe 25. The guide plate 26 is arranged in an annular trumpet shape, and the maximum diameter of the guide plate 26 is slightly smaller than the diameter of the inner cylinder 22. The upper end of the overflow pipe 25 is connected to the rainwater purification pool 3, the lower part of the guide plate 26 is the mud storage area 210, the bottom of the mud storage area 210 is connected to the mud discharge pipe 28, and the mud discharge pipe 28 is provided with a mud discharge valve 29. The filter module 27 surrounds the overflow pipe 25 and is arranged in the internal cylinder 22. One end of the filtered water outlet pipe 24 is connected to the internal cylinder 22 and is located at the upper part of the filter module 27, and the other end of the filtered water outlet pipe 24 is connected to the rainwater purification pool 3. The height of the highest point of the overflow pipe 25 is higher than the height of the highest point of the filtered water outlet pipe 24. Such a setting ensures that rainwater enters the rainwater purification pool 3 first through the filtered water outlet pipe 24.

[0035] The second outlet pipe 15 of the water collection and diversion well 1 is connected to the cyclone inlet pipe 23 of the rainwater cyclone filter device 2. The outlet water of the water collection and diversion well 1 enters the annular area surrounded by the outer cylinder 21 and the inner cylinder 22 tangentially from the cyclone inlet pipe 23, forming a downward cyclone between the two layers of cylinder walls. The rainwater swirls downward to the guide plate 26, and the large suspended particles thrown to the outside of the cyclone by the centrifugal force enter the mud storage area 210 downward and are removed from the water; the cleaner rainwater on the inside of the cyclone is guided by the outer wall of the guide plate 26, and enters the annular space between the inner cylinder 22 and the outer wall of the overflow pipe 25 upward, and then enters the filter module 27 upward under the drive of water pressure. The rainwater is mechanically filtered by the filter material to further remove the suspended matter in the water. The rainwater filtered by the filter material flows into the rainwater purification tank 3 through the filtered water outlet pipe 24. When the filter layer is clogged or the incoming water flow is too large, part of the rainwater may exceed the filter layer of the rainwater cyclone filter device 2 and directly flow out from the overflow pipe 25 to the rainwater purification tank 3.

[0036] The design of the inner cylinder 22 can form an annular space together with the outer cylinder 21, forcing the water to form a vortex and improving the separation effect; the guide plate is arranged at the lower end of the inner cylinder 22, which is the separation area of ​​clean water and solid particles. The guide plate 26 is arranged so that the solid particles in the water are blocked by the outer wall of the guide plate 26, and slide down along the guide plate 26 due to gravity into the sludge area 210, while the clean water goes up into the filter module 27 for filtering treatment; the overflow pipe 25 is arranged to act as a safety device. When the filter layer is blocked or the water flow is too large, the excess rainwater can enter the next process unit through the overflow pipe.

[0037] The rainwater purification pool 3 includes a filtered water inlet pipe 32, an overflow water inlet pipe 31, an enhanced filtration area 36, ​​an adsorption area 37, a disinfection water storage area 38, a partition 34, a first filter screen 33, a second filter screen 35 and a disinfectant adding device 39. A partition 34 is arranged between the adsorption area 37 and the disinfection water storage area 38. The adsorption area 37 is connected to the lower part of the disinfection water storage area 38 and a second filter screen is arranged at the connection point. The filtered water outlet pipe 24 is connected to the filtered water inlet pipe 32, the overflow pipe 25 is connected to the overflow water inlet pipe 31, the enhanced filtration area 36 is arranged at the end of the overflow inlet pipe, a first filter screen is arranged between the enhanced filtration area 36 and the adsorption area 37, the filtered water inlet pipe 32 is connected to the adsorption area 37, the disinfectant adding device 39 is connected to the disinfection water storage area 38, and the disinfectant adding device 39 regularly adds disinfectant to the water storage area. The mesh diameter of the first filter 33 is smaller than the particle size of the filter material filled in the enhanced filtration area 36, ​​and the mesh diameter of the second filter 35 is smaller than the particle size of the filter material filled in the adsorption area 37. The first filter 33 and the second filter 35 are made of stainless steel mesh. The water supply device 4 includes a submersible pump 40 and a water supply pipeline, and the submersible pump 40 is arranged in the disinfection water storage area 38.

[0038] The setting of the enhanced filtration area 36 is to filter the rainwater that has not been filtered by the rainwater cyclone filter device 2 to reduce the solid particles entering the rainwater purification pool 3; the filter material of the adsorption area can be selected from activated carbon, coconut shell, zeolite, etc., or modified enhanced adsorption filter material can be selected according to the water quality conditions, which has a stronger adsorption effect on pollutants such as nitrogen or phosphorus exceeding the standard in the incoming water, so as to achieve better water purification effect. The disinfectant can be commonly used sodium hypochlorite disinfection, or ultraviolet lamp disinfection can be added to improve the disinfection effect.

[0039] The filtered water outlet pipe 24 of the rainwater cyclone filter device 2 is connected to the filtered water inlet pipe 32 of the rainwater purification pool 3. The rainwater treated by the rainwater cyclone filter device 2 directly enters the adsorption area 37. The overflow pipe 25 of the rainwater cyclone filter device 2 is connected to the overflow water inlet pipe 31 of the rainwater purification pool 3. The rainwater in the rainwater cyclone filter device 2 that has not been filtered first enters the enhanced filtration area 36 and then enters the adsorption area 37 for treatment. After entering the adsorption area 37, the incoming water passes through the adsorption filter material layer under the action of gravity, and enters the disinfection water storage area 38 from the filter screen at the bottom of the partition 34. The disinfectant dosing device 39 adds disinfectant to the water according to the water level change in the pool.

[0040] A method for treating rainwater by using a rainwater treatment system for replenishing water in a landscape pool according to the utility model comprises the following steps:

[0041] Step 1: Rainwater transferred through rainwater collection pipes or grass-planted ditches enters the water collection diversion well 1. When the initial rainfall is small, the initial rainwater with a high pollutant content enters the municipal sewage pipe. When the mid-to-late rainfall is large, the rainwater enters the rainwater cyclone filter device 2.

[0042] Step 2: The swirl inlet pipe 23 enters the annular area between the outer cylinder 21 and the inner cylinder 22 tangentially to form a downward swirl. The rainwater swirls downward to the guide plate 26. The large suspended particles thrown to the outside by centrifugal force enter the mud storage area 210 downward and are removed from the water. The cleaner rainwater inside the swirl is guided by the outer wall of the guide plate 26 and enters the annular space between the inner cylinder 22 and the outer wall of the overflow pipe 25 upward. Driven by the water pressure, it enters the filter module 27 upward. The rainwater filtered by the filter material enters the rainwater purification tank 3 through the filtered water outlet pipe. When the filter layer is blocked or the water flow is too large, part of the rainwater directly enters the rainwater purification tank 3 from the overflow pipe 25.

[0043] Step 3: After being adsorbed and disinfected, the rainwater entering the rainwater purification pool 3 is transported to the landscape pool by the water supply device 4.

[0044] Although the above embodiments have been specifically described for the present invention, it should be understood by those skilled in the art that modifications or improvements may be made based on the contents disclosed in the present invention without departing from the spirit and scope of the present invention, and such modifications and improvements are within the spirit and scope of the present invention.

Claims

1. A rainwater treatment system for replenishing a landscape pool, characterized in that: It includes a water collection diversion well, a rainwater cyclone filter, a rainwater purification tank and a water supply device connected in sequence; The rainwater cyclone filter device comprises an external cylinder, an internal cylinder, a cyclone water inlet pipe, an overflow pipe, a guide plate, a filter module, and a filtered water outlet pipe. The internal cylinder is arranged on the upper part of the external cylinder. The tops of the internal cylinder and the external cylinder are both closed ends, and the bottom of the internal cylinder is an open end. An annular cavity structure is formed between the external cylinder and the internal cylinder. The cyclone water inlet pipe is tangentially connected to the annular cavity structure. The upper end of the overflow pipe extends out of the tops of the internal cylinder and the external cylinder. The lower end of the tube extends out of the bottom of the internal cylinder, the guide plate is installed at the lower end of the overflow pipe, the guide plate is arranged in an annular trumpet shape, the maximum diameter of the guide plate is slightly smaller than the diameter of the internal cylinder, the other end of the overflow pipe is connected to the rainwater purification tank, the lower part of the guide plate is a mud storage area, the filter module is arranged around the overflow pipe in the internal cylinder, one end of the filtered water outlet pipe is connected to the internal cylinder and is located at the upper part of the filter module, and the other end of the filtered water outlet pipe is connected to the rainwater purification tank.

2. A rainwater treatment system for replenishing a landscape pool as claimed in claim 1, characterized in that: The water coming from the water collection diversion well includes at least one of rainwater in the rainwater collection pipe and rainwater transferred from the grass-planting ditch.

3. A rainwater treatment system for replenishing a landscape pool as claimed in claim 1, characterized in that: The height of the highest point of the overflow pipe is higher than the height of the highest point of the filtered water outlet pipe; the bottom of the mud storage area is connected to a mud discharge pipe, and a mud discharge valve is arranged on the mud discharge pipe.

4. A rainwater treatment system for replenishing a landscape pool as claimed in claim 1, characterized in that: The rainwater purification tank includes a filtered water inlet pipe, an overflow water inlet pipe, an enhanced filtration area, an adsorption area, a disinfection water storage area, a partition, a first filter screen, a second filter screen and a disinfectant dosing device. A partition is arranged between the adsorption area and the disinfection water storage area. The adsorption area is connected to the lower part of the disinfection water storage area and a second filter screen is arranged at the connection point. The filtered water outlet pipe is connected to the filtered water inlet pipe, and the overflow pipe is connected to the overflow water inlet pipe. The enhanced filtration area is arranged at the end of the overflow water inlet pipe. A first filter screen is arranged between the enhanced filtration area and the adsorption area. The filtered water inlet pipe is connected to the adsorption area, and the disinfectant dosing device is connected to the disinfection water storage area.

5. A rainwater treatment system for replenishing a landscape pool as claimed in claim 4, characterized in that: The mesh diameter of the first filter net is smaller than the particle size of the filter material filled in the enhanced filtration area, and the mesh diameter of the second filter net is smaller than the particle size of the filter material filled in the adsorption area.

6. A rainwater treatment system for replenishing a landscape pool as claimed in claim 4, characterized in that: The water supply device comprises a submersible pump and a water supply pipeline, and the submersible pump is arranged in the disinfection water storage area.

7. A rainwater treatment system for replenishing a landscape pool as claimed in claim 1, characterized in that: The water collection diversion well includes a well body, an overflow weir plate, a rainwater inlet pipe, a first outlet pipe, and a second outlet pipe. The overflow weir plate is installed in the well body, and the rainwater inlet pipe, the first outlet pipe, and the second outlet pipe are all installed on the well body. The rainwater inlet pipe and the first outlet pipe are located on one side of the overflow weir plate, and the rainwater inlet pipe and the second outlet pipe are located on both sides of the overflow weir plate. The first outlet pipe is connected to the municipal sewage pipe, and the second outlet pipe is connected to the rainwater cyclone filter device.

8. A rainwater treatment system for replenishing a landscape pool as claimed in claim 7, characterized in that: The rainwater inlet pipe is installed at the upper part of the well body, and the first outlet pipe and the second outlet pipe are installed at the lower part of the well body.

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