Rainwater quality-divided treatment and utilization device and method

Abstract

The invention provides a rainwater quality-divided treatment and utilization device and method, and belongs to the technical field of water treatment.The rainwater quality-divided treatment and utilization device comprises a coarse screening box, a fine screening box, a quality-divided box, an initial-stage box, a middle-rear box, a photocatalysis box, a fine filtering box, a disinfection box and a solar power generation system. The coarse screening box is arranged at the top of the device, the fine screening box is arranged below the coarse screening box, the quality separation box is arranged below the fine screening box, the initial stage box is arranged on one side of the quality separation box, the middle-rear box is arranged below the quality separation box, the photocatalysis box is arranged below the initial stage box, the fine filtering box is arranged below the middle-rear box and the photocatalysis box, and the disinfection box is arranged below the fine filtering box. The solar power generation system comprises power storage equipment and a photovoltaic panel, the power storage equipment is arranged above the initial stage box, the photovoltaic panel is connected with the power storage equipment through a cable, and the photovoltaic panel provides electric energy for the power storage equipment. The problem of rainwater collection and treatment can be effectively solved, and the use safety of rainwater is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, and in particular to a rainwater separation treatment and utilization device and method. Background Art

[0002] Developing and utilizing non-traditional water resources is an effective way to address water shortages. Rainwater is a non-traditional water resource, and its development and utilization is highly effective. Currently, the primary method for utilizing rainwater is to collect it, remove sediment and impurities, and then use a dosing device to add disinfectant to the water for sterilization. At this point, rainwater essentially meets usage requirements and, after being pressurized by a pump, can be used for landscaping and road washing.

[0003] Rooftop rainwater is relatively clean, and its water quality is superior to rainwater from roads and other sources. Currently, rooftop rainwater is mostly treated and utilized by directing it to the surface for treatment before being pumped to users. This approach presents challenges with the site requirements for rainwater treatment and storage facilities, and the pumping required for utilization consumes significant energy. Therefore, a device is needed to address these issues.

[0004] Chinese patent (202310262720.4) discloses an integrated rainwater collection and treatment device that can effectively solve the problem of rainwater collection and treatment and ensure the safe use of rainwater. However, the invention does not perform quality-based treatment on rainwater. Summary of the Invention

[0005] The purpose of the present invention is to provide a rainwater separation treatment and utilization device and method, which can effectively solve the problem of rainwater collection and treatment and ensure the safe use of rainwater.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A rainwater separation treatment and utilization device is characterized by comprising a coarse screening box, a fine screening box, a quality separation box, an initial box, a middle and final box, a light catalysis box, a fine filter box, a disinfection box and a solar power generation system.

[0008] The coarse screen box is arranged at the top of the device, the fine screen box is arranged below the coarse screen box, the quality separation box is arranged below the fine screen box, the initial box is arranged on one side of the quality separation box, the middle and rear box is arranged below the quality separation box, the light catalytic box is arranged below the initial box, the fine filter box is arranged below the middle and rear box and the light catalytic box, and the disinfection box is arranged below the fine filter box.

[0009] The solar power generation system includes a power storage device and a photovoltaic panel. The power storage device is arranged above the initial box. The photovoltaic panel is connected to the power storage device through a cable. The photovoltaic panel provides electric energy for the power storage device.

[0010] Furthermore, the coarse screen box includes a coarse screen box filter residue chamber, a coarse screen box water flow chamber, a coarse screen box water inlet, a coarse screen box grating, a coarse screen box movable door and a coarse screen box water outlet.

[0011] The water inlet of the coarse screen box is arranged at the top of the coarse screen box, and the water inlet of the coarse screen box is connected to the rainwater collection network. The coarse screen box grid plate is arranged below the water inlet of the coarse screen box, and the angle between the coarse screen box grid plate and the horizontal plane is 30 to 60 degrees. The gap between two adjacent grid bars on the coarse screen box grid plate is 6 to 10 mm.

[0012] The coarse screen box water flow chamber is arranged below the coarse screen box grid plate, the coarse screen box residue chamber is arranged on one side of the coarse screen box water flow chamber, and an openable coarse screen box movable door is arranged on the outside of the coarse screen box residue chamber. A filter screen is provided at the bottom of the coarse screen box residue chamber, and water seeping from the residue can flow into the coarse screen box water flow chamber under the action of gravity. The coarse screen box water outlet is arranged at the bottom of the coarse screen box water flow chamber.

[0013] Furthermore, the fine screen box includes a fine screen box filter residue chamber, a fine screen box water flow chamber, a fine screen box water inlet, a fine screen box grating, a fine screen box movable door and a fine screen box water outlet.

[0014] The water inlet of the fine screen box is arranged on the top of the fine screen box, and the water inlet of the fine screen box is connected with the water outlet of the coarse screen box. The fine screen box grid plate is arranged below the water inlet of the fine screen box, and the angle between the fine screen box grid plate and the horizontal plane is 45 to 70 degrees. The gap between two adjacent grid bars on the fine screen box grid plate is 2 to 5 mm.

[0015] The fine screen box water flow chamber is arranged below the fine screen box grid plate, the fine screen box filter residue chamber is arranged on one side of the fine screen box water flow chamber, the outer side of the fine screen box filter residue chamber is provided with an openable fine screen box movable door, the bottom of the fine screen box filter residue chamber is provided with a filter screen, and the water seeping from the filter residue can flow into the fine screen box water flow chamber under the action of gravity, and the fine screen box water outlet is arranged at the bottom of the fine screen box water flow chamber.

[0016] Furthermore, the mass separation box includes a mass separation box water inlet, an initial box water inlet, a middle and rear box water inlet, a first piston, a second piston and a connecting movable rod.

[0017] The water inlet of the separation box is arranged at the top of the separation box, the water inlet of the separation box is connected with the water outlet of the fine screen box, an initial box water inlet is arranged between the separation box and the initial box, a middle and rear box water inlet is arranged between the separation box and the middle and rear box, a first piston is arranged at the water inlet of the initial box, and a second piston is arranged at the water inlet of the middle and rear box. The first piston and the second piston are connected as a whole by a connecting movable rod, and the connecting movable rod is installed on the bottom chamber wall of the separation box through a hinge.

[0018] Furthermore, the initial tank includes a first fixed pulley, a second fixed pulley, an inflatable float, a connecting rope, an initial tank sedimentation inclined plate and an initial tank discharge valve.

[0019] The first fixed pulley and the second fixed pulley are arranged on the inner wall of the initial box from top to bottom in sequence, one end of the connecting rope is fixed on the first piston, and the other end of the connecting rope passes around the first fixed pulley and the second fixed pulley in sequence and is fixed on the inflatable float.

[0020] An initial box sedimentation inclined plate is provided at the lower part of the initial box, and the initial box sedimentation inclined plate includes a first flat plate and a second flat plate. The high end side of the first flat plate is provided on one end side wall of the initial box, the second flat plate is provided below the first flat plate, and the low end side of the second flat plate is provided on the other end side wall of the initial box. The first flat plate and the second flat plate are parallel, and a water flow channel is formed between the first flat plate and the second flat plate. The angle between the initial box sedimentation inclined plate and the horizontal plane is 45 degrees, and an initial box discharge valve is provided on the side wall of the connection between the initial box and the low end side of the second flat plate.

[0021] Furthermore, the middle rear box includes a middle rear box sedimentation inclined plate, a middle rear box discharge valve and a middle rear box one-way valve.

[0022] A middle rear box sedimentation inclined plate is provided at the lower part of the middle rear box, and the middle rear box sedimentation inclined plate includes a third flat plate and a fourth flat plate. The high end side of the third flat plate is provided on one end side wall of the middle rear box, and the fourth flat plate is provided below the third flat plate. The low end side of the fourth flat plate is provided on the other end side wall of the middle rear box. The third flat plate and the fourth flat plate are parallel, and a water flow channel is formed between the third flat plate and the fourth flat plate. The angle between the middle rear box sedimentation inclined plate and the horizontal plane is 45 degrees. A middle rear box discharge valve is provided on the side wall of the connection between the middle rear box and the lower end side of the fourth flat plate, and the middle rear box one-way valve is provided at the bottom of the middle rear box.

[0023] Furthermore, the photocatalytic box includes several guide plates and a one-way valve of the photocatalytic box. The several guide plates are all arranged inside the photocatalytic box, and every two adjacent guide plates are respectively fixed on the chamber walls at the top and bottom of the guide plates. The several guide plates are parallel to each other, and the guide plates form an angle of 30 to 45 degrees with the horizontal plane. The surface of the guide plate is provided with a plurality of densely arranged small grooves, and photocatalysts are laid inside the small grooves. The lower surface of the guide plate is provided with a lamp tube, and the lamp tube is connected to the power storage device through an electric cable. The one-way valve of the photocatalytic box is provided at the bottom of the photocatalytic box.

[0024] Furthermore, the fine filter box includes a water distribution plate and fine filter material. The water distribution plate is arranged on the upper part of the fine filter box, and water permeable holes are evenly distributed on the water distribution plate. A supporting mesh plate is provided at the bottom of the fine filter box, and the supporting mesh plate is filled with fine filter material. The fine filter material is composed of gravel with a particle size of 0.5 to 2 mm, ceramsite, zeolite and activated carbon.

[0025] Furthermore, the disinfection box includes a plurality of ultraviolet disinfection lamps, which are evenly arranged inside the disinfection box and connected to the power storage device through cables.

[0026] A method for rainwater treatment and utilization using a rainwater separation treatment and utilization device, characterized by the following steps:

[0027] S1. Rainwater collected by the rainwater collection network enters the coarse screen box through its water inlet. The gratings of the coarse screen box filter out larger leaves and branch debris from the rainwater. The movable door of the coarse screen box is opened regularly to clean the filter residue in the filter residue chamber of the coarse screen box. Rainwater flows into the fine screen box through its water outlet and water inlet. The gratings of the fine screen box continue to filter the rainwater. The movable door of the fine screen box is opened regularly to clean the filter residue in the filter residue chamber of the fine screen box. Rainwater flows into the quality separation box through its water outlet.

[0028] S2. The sum of the weights of the first piston, the second piston, and the connecting movable rod is greater than the weight of the inflatable float. At the initial stage of rainfall, there is no rainwater in the initial box and the middle and rear boxes. The first piston, the second piston, and the connecting movable rod fall under the action of gravity. The second piston blocks the water inlet of the middle and rear boxes. The water inlet of the initial box is open. The initial rainwater enters the separation box and then flows into the initial box from the water inlet of the initial box. As the water level in the initial box rises, the inflatable float moves upward. The buoyancy generated by the inflatable float is greater than the sum of the weights of the first piston, the second piston, and the connecting movable rod. When the inflatable float rises to the designed height, the connecting movable rod is driven to rotate by the connecting rope, the second piston moves upward, the water inlet of the middle and rear boxes is opened, and part of the middle and late rainwater enters the middle and rear boxes, and part enters the initial box. The inflatable float continues to rise until the first piston completely blocks the water inlet of the initial box, and all the late rainwater enters the middle and rear boxes.

[0029] S3. Pollutants with higher specific gravity in the water in the initial tank are precipitated onto the initial tank sedimentation ramp under the action of gravity and are discharged regularly through the initial tank discharge valve. The rainwater after precipitation and separation enters the photocatalytic tank through the water flow channel of the initial tank, and the highly oxidizing hydroxyl radicals (·OH free radicals) and superoxide anion free radicals (·O - 2) It undergoes redox reaction with pollutants in rainwater and catalytically degrades pollutants in rainwater.

[0030] S4. Pollutants with higher specific gravity in the water in the middle and rear tank are deposited onto the sedimentation inclined plate of the middle and rear tank under the action of gravity, and are discharged regularly through the discharge valve of the middle and rear tank.

[0031] S5. The rainwater after photocatalytic treatment enters the fine filter box through the one-way valve of the photocatalytic box. The rainwater after sedimentation and separation in the middle and rear box enters the fine filter box through the one-way valve of the middle and rear box. The one-way valve of the middle and rear box and the one-way valve of the photocatalytic box realize the one-way flow of rainwater to avoid backflow and mutual interference. The fine filter material filters the rainwater.

[0032] S6. The rainwater filtered by the fine filter box enters the disinfection box, and the ultraviolet light emitted by the ultraviolet disinfection lamp disinfects the water.

[0033] S7. The rainwater discharged from the disinfection box is used for drinking by livestock and poultry.

[0034] Advantages of the present invention:

[0035] 1. The present invention utilizes gravity and buoyancy to collect rainwater by quality, which is simple and efficient.

[0036] 2. The initial rainwater and mid- and late-stage rainwater containing different pollutants are classified and treated, which simplifies the processing process.

[0037] 3. Use photocatalysis to treat pollutants in rainwater and use ultraviolet light for disinfection, which is simple and convenient.

[0038] 4. Use the hydraulic potential energy generated by the height difference for transportation, without the need for a water pump.

[0039] 5. The water is supplied to livestock and poultry for drinking, which saves tap water and has more significant economic benefits in arid and water-scarce areas.

[0040] 6. The present invention has a simple structure, low manufacturing cost, and is easy to use and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of the device of the present invention;

[0042] In the figure: 1, coarse screen box, 101, coarse screen box filter chamber, 102, coarse screen box water flow chamber, 103, coarse screen box water inlet, 104, coarse screen box slats, 105, coarse screen box movable door, 106, coarse screen box water outlet;

[0043] 2. Fine screen box, 201. Fine screen box filter chamber, 202. Fine screen box water flow chamber, 203. Fine screen box water inlet, 204. Fine screen box slats, 205. Fine screen box movable door, 206. Fine screen box water outlet;

[0044] 3. Separation box, 301, water inlet of separation box, 302, water inlet of initial box, 303, water inlet of middle and rear box, 304, first piston, 305, second piston, 306, connecting movable rod;

[0045] 4. Initial tank, 401. First fixed pulley, 402. Second fixed pulley, 403. Inflatable float, 404. Connecting rope, 405. Initial tank settling ramp, 406. Initial tank discharge valve;

[0046] 5. Middle rear box, 501. Middle rear box sedimentation inclined plate, 502. Middle rear box discharge valve, 503. Middle rear box one-way valve;

[0047] 6. Light catalytic box, 601, guide plate, 602, light catalytic box one-way valve;

[0048] 7. Fine filter box, 701, water distribution plate, 702, fine filter material;

[0049] 8. Disinfection box, 801, ultraviolet disinfection lamp;

[0050] 9. Energy storage equipment. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0052] like Figure 1 As shown, a rainwater separation treatment and utilization device includes a coarse screen box 1, a fine screen box 2, a quality separation box 3, an initial box 4, a middle and rear box 5, a light catalysis box 6, a fine filter box 7, a disinfection box 8 and a solar power generation system.

[0053] The coarse screen box 1 is arranged at the top of the device, the fine screen box 2 is arranged below the coarse screen box 1, the quality separation box 3 is arranged below the fine screen box 2, the initial box 4 is arranged on one side of the quality separation box 3, the middle and rear box 5 is arranged below the quality separation box 3, the light catalytic box 6 is arranged below the initial box 4, the fine filter box 7 is arranged below the middle and rear box 5 and the light catalytic box 6, and the disinfection box 8 is arranged below the fine filter box 7.

[0054] The solar power generation system includes a power storage device 9 and a photovoltaic panel. The power storage device 9 is arranged above the initial box 4. The photovoltaic panel is connected to the power storage device 9 through a cable. The photovoltaic panel provides electrical energy to the power storage device 9.

[0055] As a preferred embodiment of the present invention, the coarse screen box 1 includes a coarse screen box residue chamber 101, a coarse screen box water flow chamber 102, a coarse screen box water inlet 103, a coarse screen box grating 104, a coarse screen box movable door 105 and a coarse screen box water outlet 106.

[0056] The coarse screen box water inlet 103 is arranged at the top of the coarse screen box 1, and the coarse screen box water inlet 103 is connected to the rainwater collection network. The coarse screen box grid plate 104 is arranged below the coarse screen box water inlet 103. The angle between the coarse screen box grid plate 104 and the horizontal plane is 30 to 60 degrees, and the gap between two adjacent grid bars on the coarse screen box grid plate 104 is 6 to 10 mm.

[0057] The coarse screen box water flow chamber 102 is located below the coarse screen box grating 104. The coarse screen box filter chamber 101 is located on one side of the coarse screen box water flow chamber 102. A removable coarse screen box door 105 is provided on the outside of the coarse screen box filter chamber 101 to facilitate regular cleaning of the filter residue. A filter is provided at the bottom of the coarse screen box filter chamber 101, allowing water seeping from the filter residue to flow into the coarse screen box water flow chamber 102 under the action of gravity. The coarse screen box water outlet 106 is located at the bottom of the coarse screen box water flow chamber 102. The coarse screen box 1 is used to filter large objects such as leaves and branches from rainwater.

[0058] As a preferred embodiment of the present invention, the fine screen box 2 includes a fine screen box filter chamber 201, a fine screen box water flow chamber 202, a fine screen box water inlet 203, a fine screen box grating 204, a fine screen box movable door 205 and a fine screen box water outlet 206.

[0059] The fine screen box water inlet 203 is arranged at the top of the fine screen box 2, and the fine screen box water inlet 203 is connected to the coarse screen box water outlet 106. The fine screen box grid plate 204 is arranged below the fine screen box water inlet 203. The angle between the fine screen box grid plate 204 and the horizontal plane is 45 to 70 degrees, and the gap between two adjacent grid bars on the fine screen box grid plate 204 is 2 to 5 mm.

[0060] The fine screen box water flow chamber 202 is located below the fine screen box grating 204. The fine screen box filter residue chamber 201 is located on one side of the fine screen box water flow chamber 202. A removable fine screen box door 205 is provided on the outside of the fine screen box filter residue chamber 201 to facilitate regular cleaning of the filter residue. A filter screen is provided at the bottom of the fine screen box filter residue chamber 201, allowing water seeping from the filter residue to flow into the fine screen box water flow chamber 202 under the action of gravity. The fine screen box water outlet 206 is located at the bottom of the fine screen box water flow chamber 202.

[0061] As a preferred embodiment of the present invention, the separation box 3 includes a separation box water inlet 301, an initial box water inlet 302, a middle and rear box water inlet 303, a first piston 304, a second piston 305 and a connecting movable rod 306.

[0062] The separation tank inlet 301 is located at the top of the separation tank 3 and communicates with the fine screen tank outlet 206. Rainwater flowing out of the fine screen tank outlet 206 enters the separation tank 3 through the separation tank inlet 301. An initial tank inlet 302 is located between the separation tank 3 and the initial tank 4, and a mid-rear tank inlet 303 is located between the separation tank 3 and the mid-rear tank 5. A first piston 304 is located at the initial tank inlet 302 to open and close the initial tank inlet 302. A second piston 305 is located at the mid-rear tank inlet 303 to open and close the mid-rear tank inlet 303. The first piston 304 and the second piston 305 are made of rubber. The first piston 304 and the second piston 305 are connected as a whole through a connecting movable rod 306. The connecting movable rod 306 is installed on the bottom chamber wall of the separation box 3 through a hinge; the first piston 304, the second piston 305 and the inflatable float 403 realize the linkage between the initial box water inlet 302 and the middle and rear box water inlet 303.

[0063] As a preferred embodiment of the present invention, the initial tank 4 includes a first fixed pulley 401 , a second fixed pulley 402 , an inflatable float 403 , a connecting rope 404 , an initial tank sedimentation inclined plate 405 and an initial tank discharge valve 406 .

[0064] The first fixed pulley 401 and the second fixed pulley 402 are arranged on the inner wall of the initial box 4 from top to bottom, one end of the connecting rope 404 is fixed on the first piston 304, and the other end of the connecting rope 404 passes around the first fixed pulley 401 and the second fixed pulley 402 in sequence and is fixed on the inflatable float 403.

[0065] An initial box sedimentation inclined plate 405 is provided at the lower part of the initial box 4, and the initial box sedimentation inclined plate 405 includes a first flat plate and a second flat plate. The high end side of the first flat plate is set on the side wall of one end of the initial box 4, and the second flat plate is set below the first flat plate. The low end side of the second flat plate is set on the side wall of the other end of the initial box 4. The first flat plate and the second flat plate are parallel to each other, and a water flow channel is formed between the first flat plate and the second flat plate. The angle between the initial box sedimentation inclined plate 405 and the horizontal plane is 45 degrees. An initial box discharge valve 406 is provided on the side wall of the connection between the initial box 4 and the low end side of the second flat plate. The initial box discharge valve 406 regularly discharges the sediment in the initial box 4.

[0066] As a preferred embodiment of the present invention, the middle rear box 5 includes a middle rear box sedimentation inclined plate 501 , a middle rear box discharge valve 502 and a middle rear box one-way valve 503 .

[0067] A middle rear box sedimentation inclined plate 501 is provided at the lower part of the middle rear box 5, and the middle rear box sedimentation inclined plate 501 includes a third flat plate and a fourth flat plate. The high end side of the third flat plate is provided on the side wall of one end of the middle rear box 5, and the fourth flat plate is provided below the third flat plate. The low end side of the fourth flat plate is provided on the side wall of the other end of the middle rear box 5. The third flat plate and the fourth flat plate are parallel, and a water flow channel is formed between the third flat plate and the fourth flat plate. The angle between the middle rear box sedimentation inclined plate 501 and the horizontal plane is 45 degrees. A middle rear box discharge valve 502 is provided on the side wall of the connection between the middle rear box 5 and the lower end of the fourth flat plate. The middle rear box discharge valve 502 regularly discharges the sediment in the middle rear box 5; the middle rear box one-way valve 503 is provided at the bottom of the middle rear box 5.

[0068] As a preferred embodiment of the present invention, rainwater flowing out of the water channel formed between the first and second flat plates enters the photocatalytic chamber 6. The photocatalytic chamber 6 includes a plurality of guide plates 601 and a one-way valve 602. The guide plates 601 are disposed within the photocatalytic chamber 6, with each pair of adjacent guide plates 601 fixed to the chamber walls at the top and bottom of the guide plates 601, respectively. The guide plates 601 are parallel to each other and form an angle of 30 to 45 degrees with the horizontal plane. Rainwater flows in from the lower end of the guide plate 601 disposed on the top of the photocatalytic chamber 6 and flows out from the upper end of the guide plate 601 disposed on the chamber wall at the bottom of the photocatalytic chamber 6, in an alternating cycle.

[0069] The surface of the guide plate 601 is provided with a plurality of densely arranged small grooves, and a photocatalyst is laid inside the small grooves. A lamp tube is provided on the lower surface of the guide plate 601, and the lamp tube is connected to the power storage device 9 through an electric cable. The photocatalytic box one-way valve 602 is provided at the bottom of the photocatalytic box 6.

[0070] As a preferred embodiment of the present invention, the fine filter box 7 includes a water distribution plate 701 and fine filter material 702. The water distribution plate 701 is disposed at the top of the fine filter box 7 and has evenly distributed water holes to achieve uniform water distribution. A support mesh is provided at the bottom of the fine filter box 7, and the support mesh is filled with fine filter material 702. The fine filter material 702 is composed of gravel with a particle size of 0.5 to 2 mm, ceramsite, zeolite, and activated carbon.

[0071] As a preferred embodiment of the present invention, the disinfection box 8 includes several ultraviolet disinfection lamps 801, which are evenly arranged inside the disinfection box 8. The several ultraviolet disinfection lamps 801 are connected to the storage device 9 through cables. The ultraviolet light emitted by the ultraviolet disinfection lamps 801 disinfects the water, and the water discharged from the disinfection box 8 can be used for drinking by livestock and poultry.

[0072] A method for rainwater treatment and utilization using a rainwater separation treatment and utilization device, comprising the following steps:

[0073] S1. Rainwater collected by the rainwater collection network enters the coarse screen box 1 through the coarse screen box water inlet 103. The coarse screen box grating 104 filters larger leaves and branch debris in the rainwater. The coarse screen box movable door 105 is opened regularly to clean the filter residue in the coarse screen box filter chamber 101. Rainwater flows into the fine screen box 2 through the coarse screen box water outlet 106 and the fine screen box water inlet 203. The fine screen box grating 204 continues to filter the rainwater. The fine screen box movable door 205 is opened regularly to clean the filter residue in the fine screen box filter chamber 201. Rainwater flows into the quality separation box 3 through the fine screen box water outlet 206.

[0074] S2. The sum of the weights of the first piston 304, the second piston 305, and the connecting movable rod 306 is greater than the weight of the inflatable float 403. At the beginning of rainfall, there is no rainwater in the initial tank 4 and the middle and rear tank 5. The first piston 304, the second piston 305, and the connecting movable rod 306 fall under the action of gravity. The second piston 305 blocks the water inlet 303 of the middle and rear tanks. The water inlet 302 of the initial tank is open. The initial rainwater enters the separation tank 3 and then flows into the initial tank 4 from the water inlet 302 of the initial tank. As the water level in the initial tank rises, the inflatable float 403 moves upward. The buoyancy generated by the inflatable float 403 is greater than the sum of the weights of the first piston 304, the second piston 305 and the connecting movable rod 306. When the inflatable float 403 rises to the designed height, the connecting movable rod 306 is driven to rotate by the connecting rope 404, the second piston 305 moves upward, the water inlet 303 of the middle and rear box is opened, and part of the middle and late rainwater enters the middle and rear box 5, and part enters the initial box 4. The inflatable float 403 continues to rise until the first piston 304 completely blocks the water inlet 302 of the initial box, and all the late rainwater enters the middle and rear box 5.

[0075] S3. Pollutants with a larger specific gravity in the water in the initial tank 4 are precipitated onto the initial tank sedimentation inclined plate 405 under the action of gravity and are discharged regularly through the initial tank discharge valve 406. The rainwater after precipitation and separation enters the photocatalytic tank 6 through the water flow channel of the initial tank 4. The strongly oxidizing hydroxyl radicals (·OH radicals) and superoxide anion radicals (·O - 2) It undergoes redox reaction with pollutants in rainwater and catalytically degrades pollutants in rainwater.

[0076] S4. The pollutants with a larger specific gravity in the water in the middle and rear tank 5 are deposited on the middle and rear tank sedimentation inclined plate 501 under the action of gravity, and are regularly discharged through the middle and rear tank discharge valve 502.

[0077] S5. The rainwater after photocatalytic treatment enters the fine filter box 7 through the photocatalytic box one-way valve 602. The rainwater after sedimentation and separation in the middle and rear box 5 enters the fine filter box 7 through the middle and rear box one-way valve 503. The middle and rear box one-way valve 503 and the photocatalytic box one-way valve 602 realize the one-way flow of rainwater, avoiding backflow and mutual interference. The fine filter material 702 filters the rainwater.

[0078] S6. The rainwater filtered by the fine filter box 7 enters the disinfection box 8, and the ultraviolet light emitted by the ultraviolet disinfection lamp 801 disinfects the water.

[0079] S7. The rainwater discharged from the disinfection box 8 is used for drinking by livestock and poultry.

[0080] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may adjust the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Therefore, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A rainwater separation treatment and utilization device, characterized by: It includes a coarse screening box (1), a fine screening box (2), a quality separation box (3), an initial box (4), a middle and rear box (5), a light catalysis box (6), a fine filter box (7), a disinfection box (8) and a solar power generation system; The coarse screen box (1) is arranged at the top of the device, the fine screen box (2) is arranged below the coarse screen box (1), the quality separation box (3) is arranged below the fine screen box (2), the initial box (4) is arranged on one side of the quality separation box (3), the middle and rear boxes (5) are arranged below the quality separation box (3), the light catalytic box (6) is arranged below the initial box (4), the fine filter box (7) is arranged below the middle and rear boxes (5) and the light catalytic box (6), and the disinfection box (8) is arranged below the fine filter box (7); The solar power generation system includes a power storage device (9) and a photovoltaic panel. The power storage device (9) is arranged above the initial box (4). The photovoltaic panel is connected to the power storage device (9) via a cable. The photovoltaic panel provides electric energy for the power storage device (9).

2. The rainwater separation treatment and utilization device according to claim 1, characterized in that: The coarse screen box (1) comprises a coarse screen box filter residue chamber (101), a coarse screen box water flow chamber (102), a coarse screen box water inlet (103), a coarse screen box grating (104), a coarse screen box movable door (105) and a coarse screen box water outlet (106); The coarse screen box water inlet (103) is arranged at the top of the coarse screen box (1), the coarse screen box water inlet (103) is connected to a rainwater collection pipe network, the coarse screen box grid plate (104) is arranged below the coarse screen box water inlet (103), the coarse screen box grid plate (104) has an angle of 30 to 60 degrees with the horizontal plane, and the gap between two adjacent grid bars on the coarse screen box grid plate (104) is 6 to 10 mm; The coarse screen box water flow chamber (102) is arranged below the coarse screen box grid plate (104), the coarse screen box filter residue chamber (101) is arranged on one side of the coarse screen box water flow chamber (102), an openable coarse screen box movable door (105) is arranged on the outside of the coarse screen box filter residue chamber (101), a filter screen is provided at the bottom of the coarse screen box filter residue chamber (101), and water seeping from the filter residue can flow into the coarse screen box water flow chamber (102) under the action of gravity, and the coarse screen box water outlet (106) is arranged at the bottom of the coarse screen box water flow chamber (102).

3. The rainwater separation treatment and utilization device according to claim 2, characterized in that: The fine screen box (2) comprises a fine screen box filter residue chamber (201), a fine screen box water flow chamber (202), a fine screen box water inlet (203), a fine screen box grating (204), a fine screen box movable door (205) and a fine screen box water outlet (206); The fine screen box water inlet (203) is arranged at the top of the fine screen box (2), the fine screen box water inlet (203) is communicated with the coarse screen box water outlet (106), the fine screen box grating plate (204) is arranged below the fine screen box water inlet (203), the angle between the fine screen box grating plate (204) and the horizontal plane is 45 to 70 degrees, and the gap between two adjacent gratings on the fine screen box grating plate (204) is 2 to 5 mm; The fine screen box water flow chamber (202) is arranged below the fine screen box grid plate (204), the fine screen box filter residue chamber (201) is arranged on one side of the fine screen box water flow chamber (202), and an openable fine screen box movable door (205) is arranged on the outside of the fine screen box filter residue chamber (201). A filter screen is provided at the bottom of the fine screen box filter residue chamber (201), and water seeping from the filter residue can flow into the fine screen box water flow chamber (202) under the action of gravity. The fine screen box water outlet (206) is arranged at the bottom of the fine screen box water flow chamber (202).

4. The rainwater separation treatment and utilization device according to claim 3, characterized in that: The mass separation box (3) comprises a mass separation box water inlet (301), an initial box water inlet (302), a middle and rear box water inlet (303), a first piston (304), a second piston (305) and a connecting movable rod (306); The water inlet (301) of the separation box is arranged at the top of the separation box (3), and the water inlet (301) of the separation box is communicated with the water outlet (206) of the fine screen box. An initial box water inlet (302) is arranged between the separation box (3) and the initial box (4), and a middle and rear box water inlet (303) is arranged between the separation box (3) and the middle and rear box (5). A first piston (304) is arranged at the water inlet (302) of the initial box, and a second piston (305) is arranged at the water inlet (303) of the middle and rear box. The first piston (304) and the second piston (305) are connected as a whole by a connecting movable rod (306), and the connecting movable rod (306) is installed on the bottom chamber wall of the separation box (3) through a hinge.

5. The rainwater separation treatment and utilization device according to claim 4, characterized in that: The initial tank (4) comprises a first fixed pulley (401), a second fixed pulley (402), an inflatable float (403), a connecting rope (404), an initial tank sedimentation inclined plate (405) and an initial tank discharge valve (406); The first fixed pulley (401) and the second fixed pulley (402) are sequentially arranged on the inner side wall of the initial box (4) from top to bottom, one end of the connecting rope (404) is fixed on the first piston (304), and the other end of the connecting rope (404) passes through the first fixed pulley (401) and the second fixed pulley (402) in sequence and is fixed on the inflatable float (403); An initial tank sedimentation inclined plate (405) is provided at the lower part of the initial tank (4), and the initial tank sedimentation inclined plate (405) includes a first flat plate and a second flat plate, the high end side of the first flat plate is provided on the side wall of one end of the initial tank (4), the second flat plate is provided below the first flat plate, and the low end side of the second flat plate is provided on the side wall of the other end of the initial tank (4), the first flat plate and the second flat plate are parallel, and a water flow channel is formed between the first flat plate and the second flat plate, the angle between the initial tank sedimentation inclined plate (405) and the horizontal plane is 45 degrees, and an initial tank discharge valve (406) is provided on the side wall of the connection between the initial tank (4) and the low end side of the second flat plate.

6. The rainwater separation treatment and utilization device according to claim 5, characterized in that: The middle rear box (5) comprises a middle rear box sedimentation inclined plate (501), a middle rear box discharge valve (502) and a middle rear box one-way valve (503); A middle rear box sedimentation inclined plate (501) is provided at the lower portion of the middle rear box (5), and the middle rear box sedimentation inclined plate (501) includes a third flat plate and a fourth flat plate. The high end side of the third flat plate is provided on a side wall at one end of the middle rear box (5), and the fourth flat plate is provided below the third flat plate. The low end side of the fourth flat plate is provided on a side wall at the other end of the middle rear box (5). The third flat plate and the fourth flat plate are parallel to each other, and a water flow channel is formed between the third flat plate and the fourth flat plate. The angle between the middle rear box sedimentation inclined plate (501) and the horizontal plane is 45 degrees. A middle rear box discharge valve (502) is provided on the side wall of the connection between the middle rear box (5) and the low end side of the fourth flat plate. The middle rear box one-way valve (503) is provided at the bottom of the middle rear box (5).

7. The rainwater separation treatment and utilization device according to claim 6, characterized in that: The light catalytic box (6) comprises a plurality of guide plates (601) and a light catalytic box one-way valve (602). The plurality of guide plates (601) are all arranged inside the light catalytic box (6), and each two adjacent guide plates (601) are fixedly arranged on the chamber walls at the top and bottom of the guide plates (601). The plurality of guide plates (601) are all parallel to each other, and the guide plates (601) form an angle of 30 to 45 degrees with the horizontal plane. The surface of the guide plate (601) is provided with a plurality of densely arranged small grooves, and a photocatalyst is applied inside the small grooves. A lamp tube is provided on the lower surface of the guide plate (601), and the lamp tube is connected to the power storage device (9) via a cable. The light catalytic box one-way valve (602) is provided at the bottom of the light catalytic box (6).

8. The rainwater separation treatment and utilization device according to claim 7, characterized in that: The fine filter box (7) comprises a water distribution plate (701) and fine filter material (702). The water distribution plate (701) is arranged on the upper part of the fine filter box (7). Water permeable holes are evenly distributed on the water distribution plate (701). A supporting mesh plate is provided at the bottom of the fine filter box (7). The supporting mesh plate is filled with fine filter material (702). The fine filter material (702) consists of gravel with a particle size of 0.5 to 2 mm, ceramsite, zeolite and activated carbon.

9. The rainwater separation treatment and utilization device according to claim 8, characterized in that: The disinfection box (8) comprises a plurality of ultraviolet disinfection lamps (801), which are evenly arranged inside the disinfection box (8), and the plurality of ultraviolet disinfection lamps (801) are connected to the power storage device (9) via cables.

10. A method for treating and utilizing rainwater using the rainwater separation treatment and utilization device according to any one of claims 1 to 9, characterized in that: Here are the steps: S1. Rainwater collected by the rainwater collection network enters the coarse screen box (1) through the coarse screen box water inlet (103). The coarse screen box grating (104) filters larger leaves and branch debris in the rainwater. The coarse screen box movable door (105) is opened regularly to clean the filter residue in the coarse screen box filter chamber (101). Rainwater flows into the fine screen box (2) through the coarse screen box water outlet (106) and the fine screen box water inlet (203). The fine screen box grating (204) continues to filter the rainwater. The fine screen box movable door (205) is opened regularly to clean the filter residue in the fine screen box filter chamber (201). Rainwater flows into the quality separation box (3) through the fine screen box water outlet (206). S2. The sum of the weights of the first piston (304), the second piston (305) and the connecting movable rod (306) is greater than the weight of the inflatable float (403). At the initial stage of rainfall, there is no rainwater in the initial tank (4) and the middle and rear tank (5). The first piston (304), the second piston (305) and the connecting movable rod (306) fall under the action of gravity. The second piston (305) blocks the water inlet (303) of the middle and rear tank. The water inlet (302) of the initial tank is open. The initial rainwater enters the separation tank (3) and then flows into the initial tank (4) from the water inlet (302). As the water level in the initial tank rises, the inflatable float (403) moves to the bottom of the tank. The buoyancy generated by the inflatable float (403) is greater than the sum of the weights of the first piston (304), the second piston (305) and the connecting movable rod (306). When the inflatable float (403) rises to the designed height, the connecting movable rod (306) is driven to rotate by the connecting rope (404). The second piston (305) moves upward, and the water inlet (303) of the middle and rear box is opened. Part of the middle and late rainwater enters the middle and rear box (5), and part enters the early box (4). The inflatable float (403) continues to rise until the first piston (304) completely blocks the water inlet (302) of the early box, and all the late rainwater enters the middle and rear box (5). S3. Pollutants with a larger specific gravity in the water in the initial tank (4) are precipitated onto the initial tank sedimentation inclined plate (405) under the action of gravity and are discharged regularly through the initial tank discharge valve (406). The rainwater after precipitation and separation enters the photocatalytic box (6) through the water flow channel of the initial tank (4). The strongly oxidizing hydroxyl radicals (·OH radicals) and superoxide anion radicals (·O - 2) Produce redox reactions with pollutants in rainwater to catalyze the degradation of pollutants in rainwater; S4. The pollutants with a larger specific gravity in the water in the middle and rear box (5) are precipitated under the action of gravity onto the sedimentation inclined plate (501) in the middle and rear box and are discharged regularly through the discharge valve (502) in the middle and rear box; S5. The rainwater after photocatalytic treatment enters the fine filter box (7) through the photocatalytic box one-way valve (602). The rainwater after sedimentation and separation in the middle and rear box (5) enters the fine filter box (7) through the middle and rear box one-way valve (503). The middle and rear box one-way valve (503) and the photocatalytic box one-way valve (602) realize the one-way flow of rainwater, avoiding backflow and mutual interference. The fine filter material (702) filters the rainwater. S6. The rainwater filtered by the fine filter box (7) enters the disinfection box (8), and the ultraviolet light emitted by the ultraviolet disinfection lamp (801) disinfects the water; S7. The rainwater discharged from the disinfection box (8) is used for drinking by livestock and poultry.

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