Integrated rainwater recovery treatment device with separated rainwater pool and sedimentation pool

Abstract

The utility model belongs to the technical field of rainwater recovery, and relates to an integrated rainwater recovery treatment device with a rainwater pool and a sedimentation pool separated, which comprises the rainwater pool and a rainwater recovery treatment tank, the rainwater recovery treatment tank is divided into the sedimentation pool, a filter pool and a clean water pool which are mutually isolated, the rainwater pool is provided with a lifting water pump, and the sedimentation pool is provided with a sludge discharge pump. A water inlet of the lifting water pump is positioned at the bottom of the rainwater tank, a water outlet of the lifting water pump is communicated to the upper part of the sedimentation tank, an inlet of the sludge discharge pump is positioned at the hopper-shaped bottom of the sedimentation tank, a water inlet of the rainwater recycling pressurizing water pump is positioned in the clean water tank, and the upper part of the sedimentation tank is communicated with the filter tank. The bottom of the filter tank is communicated with a clean-water tank; the device is made of glass fiber reinforced plastics, has the functions of sedimentation, filtration, disinfection and backwashing, is compact in structure, good in treatment effect, corrosion-resistant and easy to install and maintain, and can effectively improve the utilization efficiency of rainwater resources.

Description

Technical Field

[0001] The utility model belongs to the technical field of rainwater recycling, and relates to an integrated rainwater recycling and processing device with a rainwater pool and a sedimentation tank separated. Background Art

[0002] A rainwater harvesting system or treatment plant is a system that collects, stores, and treats rainwater, converting it into a usable source of water for non-potable uses. This system effectively utilizes natural resources, reducing reliance on groundwater or piped water systems. It also helps alleviate pressure on urban drainage systems and reduces flood risks. The basic components of a rainwater harvesting system include a collection system, a diversion system, a filtration system, storage facilities, a treatment system, and a distribution system.

[0003] A decentralized rainwater harvesting system (DHS) is a rainwater recycling system independently installed within a building or community. Compared to centralized systems, decentralized systems are more flexible and suitable for small-scale complexes or single buildings. Decentralized DHSs offer advantages such as independent operation, adaptability, cost-effectiveness, and ease of maintenance. Due to their small size and flexible setup, DHSs are widely used in residential communities, commercial buildings, public facilities such as schools and hospitals, and in rural areas. Furthermore, DHSs integrate sedimentation, filtration, and adsorption processes. They require no power, relying on the potential energy created by the drop in rainfall to guide rainwater through the DHSs. Backwashing is not required. Depending on the quality of the rainwater, filter cartridges only need to be flushed regularly (generally every 1-2 years) and replaced every 3-5 years. When higher quality recycled water is required, a coagulation unit can be added before the DHSs to improve the efficiency of subsequent rainwater treatment and ensure that the effluent quality meets the required standards. Therefore, decentralized rainwater recycling processors are an important part of modern urban water resource management. By rationally utilizing rainwater resources, it can not only alleviate the pressure on urban water supply, but also promote environmental protection.

[0004] However, existing decentralized rainwater recycling processors are usually constructed using reinforced concrete, which has a long construction period, high cost, poor corrosion resistance, poor structural stability, and cannot integrate rainwater storage and rainwater treatment. The mud and sewage discharge effect is poor, resulting in poor water quality.

[0005] Therefore, a highly integrated, highly stable, and high-quality rainwater recycling and treatment device is needed to solve the above technical problems. Utility Model Content

[0006] The technical solution adopted by the utility model to solve the technical problem is: an integrated rainwater recycling and processing device with a rainwater pool and a sedimentation tank separated, comprising: a rainwater pool and a rainwater recycling and processing tank, wherein the rainwater pool is used to recycle and store rainwater, and the rainwater recycling and processing tank is used to precipitate, separate and filter rainwater for subsequent recycling and utilization; the rainwater recycling and processing tank is divided into a sedimentation tank, a filtering tank and a clear water tank which are isolated from each other in the horizontal direction; the bottom of the sedimentation tank is in the shape of a bucket with a larger top and a smaller bottom;

[0007] The filter pool is layered from top to bottom with a quartz sand layer, anthracite layer, and gravel layer. The quartz sand layer, anthracite layer, and gravel layer separate the space inside the filter pool into an upper filter chamber and a lower filter chamber. The upper filter chamber is located above the quartz sand layer, and the lower filter chamber is located below the gravel layer. The lower filter chamber pipeline is connected to the clear water tank.

[0008] The rainwater tank is equipped with a lifting water pump, the sedimentation tank is equipped with a sludge pump, and the clear water tank is equipped with a rainwater recycling and utilization pressurized water pump; the water inlet of the lifting water pump is located at the bottom of the rainwater tank, and the water outlet of the lifting water pump is connected to the upper part of the sedimentation tank; the inlet of the sludge pump is located at the bucket-shaped bottom of the sedimentation tank, and the outlet of the sludge pump is connected to the sewage pipe network; the water inlet of the rainwater recycling and utilization pressurized water pump is located in the clear water tank, and the water outlet of the rainwater recycling and utilization pressurized water pump is connected to the rainwater recycling and utilization pipe network, the upper part of the sedimentation tank is connected to the upper filter chamber, and the sedimentation tank connected to the upper filter chamber and the water outlet of the lifting water pump are respectively located on both sides of the sedimentation tank.

[0009] Preferably, the rainwater pool and rainwater recycling tank are both made of fiberglass.

[0010] Preferably, a perforated tube is provided in the lower filter chamber, and a plurality of water holes are provided on the tube wall of the perforated tube. The water holes are located on the upper side of the perforated tube. One end of the perforated tube is connected to the lower filter chamber, and the other end of the perforated tube is connected to the outlet of the rainwater recycling pressurized water pump.

[0011] More preferably, a concave backwash water tank is provided on the upper surface of the quartz sand layer.

[0012] Preferably, an equipment room is provided in the rainwater recycling tank, and the equipment room is provided with: a dosing device and a disinfection device. The dosing device is connected to the upper filter cavity through a dosing pipe, and the disinfection device is connected to the clear water tank 5 through a pipeline.

[0013] Preferably, an inclined plate is provided in the sedimentation tank, which is a plurality of parallel and inclined flat plates. The water outlet of the lifting water pump is higher than the upper edge of the inclined plate, and the lower edge of the inclined plate is higher than the highest point of the bucket-shaped bottom of the sedimentation tank; the inclined plate is located between the place where the sedimentation tank connects to the upper filter cavity and the water outlet of the lifting water pump.

[0014] Preferably, the rainwater pool and rainwater recycling tank are both provided with maintenance manholes.

[0015] More preferably, a personnel maintenance passage is provided in the rainwater recycling and processing tank, and the personnel maintenance passage is connected to the sedimentation tank, the filter tank, the clear water tank and the maintenance manhole.

[0016] More preferably, the rainwater pool and rainwater recovery and treatment tank are buried below the ground, and the entrance of the inspection manhole extends above the ground.

[0017] The beneficial effects of the utility model are:

[0018] This new rainwater treatment device, made of fiberglass, features sedimentation, filtration, disinfection, and backwashing functions. It boasts a compact structure, excellent treatment results, corrosion resistance, and ease of installation and maintenance, effectively improving rainwater resource utilization. This highly integrated device reduces the number of outdoor inspection wells, reducing the footprint of rainwater treatment facilities and the cost of rainwater recovery. It is suitable for smaller residential areas, commercial buildings, schools, hospitals, and other public areas or facilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of an integrated rainwater recycling and processing device with a rainwater tank and a sedimentation tank separated according to the present invention;

[0020] Figure 2 This utility model Figure 1 A-axis partial enlarged view.

[0021] Among them, 1. Rainwater pool; 2. Rainwater recycling and treatment tank; 3. Sedimentation tank; 4. Filter pool; 5. Clear water pool; 6. Quartz sand layer; 7. Anthracite layer; 8. Gravel layer; 9. Upper filter chamber; 10. Lower filter chamber; 11. Lifting water pump; 12. Mud pump; 13. Pressure water pump; 14. Perforated pipe; 15. Backwash water tank; 16. Equipment room; 17. Dosing device; 18. Dosing pipe; 19. Disinfection equipment; 20. Inclined plate; 21. Maintenance manhole; 22. Personnel maintenance passage. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the relevant technologies in the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] refer to Figures 1-2As shown, an integrated rainwater recycling and treatment device with a separate rainwater tank and a sedimentation tank in this embodiment includes: a rainwater tank 1 and a rainwater recycling and treatment tank 2. The rainwater tank 1 is used to recycle and store rainwater, and the rainwater recycling and treatment tank 2 is used to precipitate, separate and filter rainwater for subsequent recycling and utilization. The rainwater recycling and treatment tank 2 is divided into a sedimentation tank 3, a filter tank 4, and a clear water tank 5, which are isolated from each other in the horizontal direction. The bottom of the sedimentation tank 3 is in a bucket shape with a larger top and a smaller bottom. The bucket-shaped bottom of the sedimentation tank 3 is conducive to collecting sludge and debris precipitated in the sedimentation tank 3, so that a sludge pump 12 can regularly pump out and clean it. The bucket shape includes a conical funnel shape, a square bucket shape, or an inverted trapezoidal bucket shape with slopes on both sides.

[0024] The filter tank 4 is sequentially layered with a quartz sand layer 6, anthracite layer 7, and a gravel layer 8 from top to bottom. The quartz sand layer 6, the anthracite layer 7, and the gravel layer 8 divide the space in the filter tank 4 into an upper filter chamber 9 and a lower filter chamber 10. The upper filter chamber 9 is located above the quartz sand layer 6, and the lower filter chamber 10 is located below the gravel layer 8. The lower filter chamber 10 is connected to the clean water tank 5 by a pipeline. The precipitated water to be filtered in the upper filter chamber 9 flows from top to bottom through the quartz sand, anthracite, and gravel, and is filtered to remove floating objects, suspended matter, and other debris so that it can be subsequently recycled into the clean water tank 5.

[0025] The rainwater tank 1 is provided with a lifting water pump 11, the sedimentation tank 3 is provided with a sludge pump 12, and the clear water tank 5 is provided with a rainwater recycling and utilizing pressurized water pump 13; the water inlet of the lifting water pump 11 is located at the bottom of the rainwater tank 1, and the water outlet of the lifting water pump 11 is connected to the upper part of the sedimentation tank 3; the inlet of the sludge pump 12 is located at the lowest point of the bucket-shaped bottom of the sedimentation tank 3, and the outlet of the sludge pump 12 is connected to the sewage pipe network; the water inlet of the rainwater recycling and utilizing pressurized water pump 13 is located in the clear water tank 5, and the water outlet of the rainwater recycling and utilizing pressurized water pump 13 is connected to the rainwater recycling and utilizing pipe network, the upper part of the sedimentation tank 3 is connected to the filter upper chamber 9, and the sedimentation tank 3 is connected to the filter upper chamber 9 and the water outlet of the lifting water pump 11 is located in the sedimentation tank 3 respectively. On both sides; after the rainwater enters the rainwater tank 1, it is pumped by the lifting water pump 11 to the upper part of the sedimentation tank 3. It is fully precipitated in the sedimentation tank 3 so that the sludge and debris carried by the rainwater and the density greater than that of water are settled at the bottom of the sedimentation tank 3. Since the bottom of the sedimentation tank 3 is bucket-shaped, the sludge and debris are concentrated at the lowest part of the bucket. The accumulated sludge and debris are pumped by the sludge pump 12 to the sewage pipe network for removal and treatment, and the precipitated rainwater slowly flows into the upper filtering chamber 9 on the upper part of the filter tank 4 through the upper part of the sedimentation tank 3. The rainwater in the upper filtering chamber 9 is filtered in sequence through the quartz sand layer 6, the anthracite layer 7, and the gravel layer 8 and enters the lower filtering chamber 10. Finally, it enters the clear water tank 5 through the pipeline on the lower filtering chamber 10 to wait for recycling.

[0026] Furthermore, the rainwater pool 1 and the rainwater recycling and treatment tank 2 are both made of fiberglass; compared with reinforced concrete rainwater pools, the rainwater pool 1 and the rainwater recycling and treatment tank 2 made of fiberglass have the advantages of corrosion resistance, good structural stability, short construction period, low cost, long service life, and easy installation and maintenance.

[0027] Furthermore, a perforated pipe 14 is provided in the lower filter chamber 10, and a plurality of water holes are provided on the wall of the perforated pipe 14. The water holes are located on the upper side of the perforated pipe 14, and the direction of the water holes is from bottom to top. One end of the perforated pipe 14 is connected to the lower filter chamber 10, and the other end of the perforated pipe 14 is connected to the outlet of the rainwater recycling and utilization pressurized water pump 13; the perforated pipe 14 is used to backwash the filter layer in the filter tank 4, and the rainwater recycling and utilization pressurized water pump 13 can be used to extract the recycled rainwater in the clear water tank 5 to regularly backwash the filter layer, and the debris filtered by the gravel layer 8, the anthracite layer 7, and the quartz sand layer 6 can be washed out of the filter layer, thereby improving the service life of the filter layer and reducing the number of manual maintenance or replacement of the filter layer and the maintenance and replacement costs.

[0028] Furthermore, a concave backwash trough 15 is provided on the upper surface of the quartz sand layer 6; after the debris generated by the backwash filter layer of the perforated tube 14 returns to the upper filter chamber 9, since the backwash trough 15 is concavely set on the upper surface of the quartz sand layer 6, and a barrier higher than the upper surface of the quartz sand layer 6 is set on the side wall of the backwash trough 15, the debris falls into the backwash trough 15 during backwashing, which is convenient for maintenance personnel to regularly clean the debris in the backwash trough 15 and extend the service life of the filter layer.

[0029] Furthermore, an equipment room 16 is provided in the rainwater recycling and processing tank 2, and the equipment room 16 is equipped with: a dosing device 17 and a disinfection device 19. The dosing device 17 is connected to the upper filter chamber 9 through a dosing pipe 18, and the disinfection equipment 19 is connected to the clear water tank 5 through a pipeline; the equipment room 16 is used to place the dosing device 17, the disinfection equipment 19 and the control devices of each water pump and valve. The dosing device 17 puts the agent into the upper filter chamber 9 through the dosing pipe 18 to improve the filtration efficiency, and the disinfection equipment 19 disinfects the rainwater in the clear water tank to improve the water quality of the recovered rainwater and facilitate recycling.

[0030] Furthermore, an inclined plate 20 is provided in the sedimentation tank 3. The inclined plate 20 is a plurality of parallel and inclined flat plates. The outlet of the lifting pump 11 is higher than the upper edge of the inclined plate 20, and the lower edge of the inclined plate 20 is higher than the highest point of the bucket-shaped bottom of the sedimentation tank 3. The inclined plate 20 is located between the place where the sedimentation tank 3 communicates with the upper filter chamber 9 and the outlet of the lifting pump 11. By installing the inclined inclined plate 20 in the sedimentation tank 3, the sedimentation area is increased, thereby improving the removal efficiency of the suspended solids. Based on the gravity sedimentation theory, when the water flows through the channel between the inclined plates 20, the water flow velocity is increased. Slowing down, so that the suspended particles settle to the bottom of the pool under the action of gravity. The existence of the inclined plate 20 increases the effective area of ​​sedimentation, so that the particles have more opportunities to settle, thereby improving the sedimentation treatment efficiency of the sedimentation tank 3. The inclination angle of the inclined plate 20 is 45° to 60°. The spacing between the inclined plates 20 determines the size of the water flow channel. The water inlet of the inclined plate 20 is used to evenly distribute the water flow entering the sedimentation tank 3. The water outlet of the inclined plate 20 is located on the other side of the sedimentation tank 30, which is used to discharge the treated clean water, increase the time for rainwater to flow through, and thus extend the sedimentation time.

[0031] Furthermore, the rainwater pool 1 and the rainwater recycling tank 2 are both provided with a maintenance manhole 21 ; the maintenance manhole 21 is used for maintenance personnel to enter the rainwater pool 1 and the rainwater recycling tank 2 for routine maintenance and inspection.

[0032] Furthermore, a personnel maintenance passage 22 is provided in the rainwater recycling and processing tank 2, and the personnel maintenance passage 22 connects the sedimentation tank 3, the filter tank 4, the clear water tank 5 and the maintenance manhole 21; the personnel maintenance passage 22 is used for maintenance personnel to go to different areas during daily maintenance and inspection.

[0033] Furthermore, the rainwater pool 1 and the rainwater recovery tank 2 are both buried below the ground, and the entrance of the inspection manhole 21 extends above the ground.

[0034] With the development and popularization of sponge city development projects, rainwater storage tanks and rainwater purification equipment have been widely used. However, because ordinary rainwater storage tanks and purification equipment are scattered and occupy a large area, they are greatly restricted in actual projects, which has a relatively large impact on the actual effect of sponge city projects. The utility model highly integrates the storage tank and purification treatment system, which solves this problem well.

[0035] To sum up, the rainwater treatment device of the present invention is made of fiberglass and has sedimentation, filtration, disinfection and backwashing functions; the present invention has a compact structure, good treatment effect, corrosion resistance, easy installation and maintenance, and can effectively improve the utilization efficiency of rainwater resources. The present invention highly integrates various treatment equipment, reduces the number of outdoor inspection wells, reduces the floor area of ​​rainwater treatment facilities and the cost of rainwater treatment recovery, so the present invention has broad application prospects in smaller residential areas, commercial buildings, schools, hospitals and other public areas.

[0036] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An integrated rainwater recycling and treatment device with a rainwater tank and a sedimentation tank separated, characterized in that: include: A rainwater pool (1) and a rainwater recovery tank (2), wherein the rainwater pool (1) is used to recover and store rainwater, and the rainwater recovery tank (2) is used to precipitate, separate and filter rainwater for subsequent recycling; The rainwater recovery and treatment tank (2) is divided into a sedimentation tank (3), a filtration tank (4), and a clear water tank (5) which are isolated from each other in the horizontal direction; The bottom of the sedimentation tank (3) is in the shape of a bucket with a larger top and a smaller bottom; The filter pool (4) is provided with a quartz sand layer (6), an anthracite layer (7), and a gravel layer (8) in layers from top to bottom. The quartz sand layer (6), the anthracite layer (7), and the gravel layer (8) separate the space in the filter pool (4) into an upper filter chamber (9) and a lower filter chamber (10). The upper filter chamber (9) is located above the quartz sand layer (6), and the lower filter chamber (10) is located below the gravel layer (8). The lower filter chamber (10) is connected to the clear water pool (5) through a pipeline. The rainwater tank (1) is provided with a lifting water pump (11), the sedimentation tank (3) is provided with a sludge pump (12), and the clear water tank (5) is provided with a rainwater recycling pressurized water pump (13); The water inlet of the lifting water pump (11) is located at the bottom of the rainwater tank (1), and the water outlet of the lifting water pump (11) is connected to the upper part of the sedimentation tank (3); the inlet of the mud discharge pump (12) is located at the bucket-shaped bottom of the sedimentation tank (3), and the outlet of the mud discharge pump (12) is connected to the sewage pipe network; the water inlet of the rainwater recycling pressurized water pump (13) is located in the clear water tank (5), and the water outlet of the rainwater recycling pressurized water pump (13) is connected to the rainwater recycling pipe network. The upper part of the sedimentation tank (3) is connected to the upper filtration chamber (9), and the place where the sedimentation tank (3) is connected to the upper filtration chamber (9) and the water outlet of the lifting water pump (11) are respectively located on both sides of the sedimentation tank (3).

2. The integrated rainwater recycling and treatment device with separated rainwater pool and sedimentation tank according to claim 1 is characterized in that: The rainwater pool (1) and the rainwater recovery tank (2) are both made of glass fiber reinforced plastics.

3. The integrated rainwater recycling and treatment device with separated rainwater pool and sedimentation tank according to claim 1 is characterized in that: A perforated pipe (14) is provided in the filter lower chamber (10), and a plurality of water holes are provided on the wall of the perforated pipe (14), wherein the water holes are located on the upper side of the perforated pipe (14), one end of the perforated pipe (14) is connected to the filter lower chamber (10), and the other end of the perforated pipe (14) is connected to the water outlet of the rainwater recycling pressurized water pump (13).

4. The integrated rainwater recycling and treatment device with separated rainwater pool and sedimentation tank according to claim 3 is characterized in that: A concave backwash water tank (15) is provided on the upper surface of the quartz sand layer (6).

5. The integrated rainwater recycling and treatment device with separated rainwater pool and sedimentation tank according to claim 1 is characterized in that: An equipment room (16) is provided in the rainwater recycling tank (2), and the equipment room (16) is provided with: a dosing device (17) and a disinfection device (19). The dosing device (17) is connected to the upper filter chamber (9) through a dosing pipe (18), and the disinfection device (19) is connected to the clear water tank (5) through a pipeline.

6. The integrated rainwater recycling and treatment device with separated rainwater pool and sedimentation tank according to claim 1 is characterized in that: An inclined plate (20) is provided in the sedimentation tank (3), and the inclined plate (20) is a plurality of parallel and inclined flat plates. The water outlet of the lifting water pump (11) is higher than the upper edge of the inclined plate (20), and the lower edge of the inclined plate (20) is higher than the highest point of the bucket-shaped bottom of the sedimentation tank (3). The inclined plate (20) is located between the place where the sedimentation tank (3) communicates with the upper filtering chamber (9) and the water outlet of the lifting water pump (11).

7. The integrated rainwater recycling and treatment device with separated rainwater pool and sedimentation tank according to claim 1 is characterized in that: The rainwater pool (1) and the rainwater recovery tank (2) are both provided with a maintenance manhole (21).

8. The integrated rainwater recycling and treatment device with separated rainwater pool and sedimentation tank according to claim 7 is characterized in that: A personnel inspection passage (22) is provided in the rainwater recovery and treatment tank (2), and the personnel inspection passage (22) is connected to the sedimentation tank (3), the filter tank (4), the clear water tank (5) and the inspection manhole (21).

9. The integrated rainwater recycling and treatment device with separated rainwater pool and sedimentation tank according to claim 7, characterized in that: The rainwater pool (1) and the rainwater recovery tank (2) are both buried below the ground, and the entrance of the inspection manhole (21) extends above the ground.

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