Roof rainwater purification and storage device

Abstract

The utility model discloses a roof rainwater purification and storage device. Comprising a first rain filtering system, a purifying system and a water storage purifying system. The first rain filtering system is composed of a rain down pipe, a water filtering box and a flow dividing pipe. The purification system consists of a planting cavity, a buffer layer, a planting layer and a filter layer; the water storage and purification system is composed of a box body, a supporting frame and bionic carbon fiber aquatic plants. Plants are planted in the planting cavity of the device to form a rainwater garden, initial rainwater purification of a roof can be achieved, the pollutant content of runoff rainwater can be effectively reduced, and the device has the functions of rainwater retention and storage and on-site purification and is suitable for source decentralized control and pretreatment of high-level catchment runoff rainwater pollution of the roof and the like; a graceful water ecological environment and urban landscape are built, and the urban livability is improved.

Description

Technical Field

[0001] The utility model relates to a roof rainwater purification and water storage device. Background Art

[0002] As the urbanization process continues to accelerate, the construction of sponge cities is becoming increasingly important in modernization and development. Sponge cities refer to cities that can adapt to environmental changes and respond to natural disasters like a sponge, absorbing water, storing water, infiltrating water, and purifying water when it rains, and releasing and utilizing the stored water when needed. Sponge city construction should follow the principle of ecological priority, combining natural approaches with artificial measures, and maximize rainwater accumulation, infiltration and purification on the premise of ensuring the safety of urban drainage and flood control, so as to promote the utilization of rainwater resources and the protection of the ecological environment.

[0003] Since the initial rainwater dissolves pollutants such as acidic gases, automobile exhaust, and factory exhaust in the air, it washes the roof after falling, so that the initial rainwater contains a large amount of organic matter, pathogens, toxins that affect the growth of plants and animals, heavy metals, grease, suspended solids and other pollutants. At present, roof rainwater is generally discharged directly to green spaces through rain downpipes, which causes problems of initial rainwater pollution and waste of water resources, and the appearance is difficult to coordinate with the community environment. In addition, direct discharge of initial rainwater into sponge facilities will affect the service life and construction effect. Therefore, it is urgent to change and optimize the existing roof drainage method, pre-treat rainwater, and enhance the purification and storage function of green spaces for rainwater, so as to effectively alleviate urban waterlogging and heat island effects, reduce the pollution load of urban runoff, and enhance and improve the ecology, nature, and livability of the urban environment. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a roof rainwater purification and storage device, which adopts a decentralized system through filtration, plant purification and microbial purification and storage measures to solve the pollution problems of initial roof rainwater and low water resource utilization in the prior art. It is a measure to reduce, control and degrade rainwater runoff pollutants from the source.

[0005] To achieve the above-mentioned purpose, the roof rainwater purification and storage device of the utility model at least includes a purification system; the purification system consists of a planting cavity and a buffer layer, a planting layer and a filter layer arranged in the planting cavity from top to bottom.

[0006] Furthermore, a water storage purification system is arranged downstream of the purification system; the water storage purification system consists of a water storage tank, a support frame is arranged inside the water storage tank, and microbial filler bionic carbon fiber water plants are suspended under the support frame.

[0007] Furthermore, the planting cavity is placed on the upper part of the water storage tank, the bottom of the planting cavity is connected to a water absorption device extending into the water storage tank, a sewage pipe is arranged at the bottom of the water storage tank, an overflow pipe is arranged inside the water storage tank, and the outlet of the overflow pipe is connected to the nearby green space.

[0008] Furthermore, a primary rain filtering system is arranged upstream of the purification system; the primary rain filtering system is composed of a rainwater downpipe, a water filter box and a diversion pipe, and the water outlet of the diversion pipe is connected to the purification system.

[0009] Furthermore, the water filter box is located directly below the water outlet of the rainwater pipe; the top of the water filter box is open, and a grille filter is arranged inside the water filter box, the length and width of the grille hole are 0.5cm to 1cm, and multiple water outlets are evenly arranged at the bottom of the water filter box, and the water outlets are connected to diversion pipes.

[0010] Furthermore, the planting cavity is made of glass fiber reinforced plastic with a thickness of 8 to 12 mm. The planting cavity is located below the outlet of the diversion pipe, a permeable geomembrane is laid on the bottom of the planting cavity, and small holes are evenly arranged on the bottom of the planting cavity.

[0011] Furthermore, the buffer layer is pebbles, the pebble particle size is 20-50 mm, and the pebble thickness is 5-8 cm; the planting layer matrix soil thickness is 10 cm-15 cm.

[0012] Furthermore, the filter layer includes: the first filter layer is quartz sand filter material with a thickness of 15cm to 20cm; the second filter layer is manganese sand filter material with a particle size of 5mm to 8mm and a thickness of 12cm to 15cm; the third filter layer III is high-density garnet filter material with a particle size of 5mm to 8mm and a thickness of 20cm to 25cm.

[0013] Furthermore, the water storage tank is made of fiberglass, and support brackets are arranged around the middle of the tank to support the support frame, and a planting cavity is placed on the upper part of the support frame; a water absorption device extending into the tank is connected to the bottom of the planting cavity; bionic carbon fiber water plants are hung at the bottom of the support frame, and heavy objects are hung at the bottom of the bionic carbon fiber water plants to keep the water plants hanging vertically.

[0014] Furthermore, the top inlet of the overflow pipe in the water storage tank is close to the top of the tank, and a control valve is provided on the sewage pipe.

[0015] The utility model has the following beneficial effects:

[0016] (1) The device regulates and stores initial rainwater and mid- and late-stage rainwater through energy dissipation by pebbles in the buffer layer and purification by plants and filter materials. It can effectively reduce the pollutant content of initial runoff rainwater, has the functions of rainwater retention and on-site purification, and can significantly improve the utilization rate of water resources.

[0017] (2) Various types of plants are planted in the planting cavity to form a miniature rainwater garden, which increases the diversity of vegetation and the vertical spatial level of the landscape. It has a water storage function and natural landscape characteristics. The construction process is simple. By combining the device with the surrounding landscape environment, a beautiful water ecological environment and urban landscape are created, thereby improving the livability of the city.

[0018] (3) By filtering the debris in the initial rainwater and pre-treating the pollutants, the harm of pollutants to the sponge facilities is effectively reduced. Impurities and debris only need to be cleaned regularly. The device has the advantages of low production and maintenance costs, convenient construction, and ecological protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A plan view of a drainage system according to an embodiment of the present application;

[0020] Figure 2 A cross-sectional view of a drainage system according to an embodiment of the present application;

[0021] Figure 3 This is a planar structural diagram of the water filter box according to an embodiment of the present application.

[0022] In the figure: 1. initial rain filtration system; 11. rainwater downpipe; 12. water filter box; 13. diversion pipe; 2. purification system; 21. planting cavity; 22. buffer layer; 23. planting layer; 24. filter layer; 241. filter layer I; 242. filter layer II; 243. filter layer III; 3. water storage and purification system; 31. box; 32. support frame; 33. bionic carbon fiber water plants; 34. water absorption device; 35. sewage pipe; 36. overflow pipe; 37. support bracket. DETAILED DESCRIPTION

[0023] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0024] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The utility model discloses a roof rainwater purification and water storage device, which at least comprises a purification system; the purification system comprises a planting cavity and a buffer layer, a planting layer and a filtering layer arranged in the planting cavity from top to bottom.

[0028] As a further improvement of the utility model, a water storage purification system is arranged downstream of the purification system; the water storage purification system consists of a water storage tank, a support frame is arranged inside the water storage tank, and microbial filler bionic carbon fiber water plants are suspended under the support frame.

[0029] As a further improvement of the utility model, the planting cavity is placed on the upper part of the water storage tank, the bottom of the planting cavity is connected to a water absorption device extending into the water storage tank, a sewage pipe is arranged at the bottom of the water storage tank, an overflow pipe is arranged inside the water storage tank, and the outlet of the overflow pipe is connected to a nearby green space.

[0030] As a further improvement of the utility model, a primary rain filtering system is arranged upstream of the purification system; the primary rain filtering system is composed of a rainwater downpipe, a water filter box and a diversion pipe, and the water outlet of the diversion pipe is connected to the purification system.

[0031] Example 1

[0032] from Figures 1-2 It can be seen that a roof rainwater purification and storage device includes a primary rain filtration system 1, a purification system 2 and a water storage and purification system 3. The primary rain filtration system 1 is composed of a rain pipe 11, a water filter box 12 and a diversion pipe 13, which is used to receive rainwater from the rain pipe and block debris. The rainwater that has been initially filtered enters the purification system 2 through the diversion pipe 13; the purification system 2 is composed of a planting cavity 21, a buffer layer 22, a planting layer 23 and a filter layer 24; the water storage and purification system 3 is composed of a box 31, a support frame 32 and bionic carbon fiber water plants 33, and the support frame 32 is made of round steel bars welded in a crisscross pattern with a spacing of 10 cm.

[0033] The planting cavity 21 is placed on the upper part of the water storage box 31, and the bottom of the planting cavity 21 is connected to a water absorption device 34 extending into the box. A sewage pipe 35 is arranged at the bottom of the box, and a control valve is arranged on the sewage pipe; an overflow pipe 36 is arranged inside the box, and the top inlet of the overflow pipe is close to the top of the box. Excess rainwater is discharged into a nearby green space or a rainwater drainage pipe through the overflow pipe.

[0034] The water filter box 12 is located directly below the water outlet of the rain down pipe 11. The water filter box is rectangular, with an open top and a grille filter inside. The grille hole is 0.5 cm to 1 cm long and wide, and is used to receive rainwater from the rain down pipe and block larger fallen leaves, garbage and debris, etc., and is cleaned regularly by the staff; a plurality of water outlets are evenly arranged at the bottom of the water filter box, and the water outlets are connected to the diversion pipe 13.

[0035] The planting cavity 21 is made of fiberglass with a thickness of 8 to 12 mm. The planting cavity is located below the outlet of the diversion pipe 13. A buffer layer 22, a planting layer 23 and a filter layer 24 are arranged in the planting cavity from top to bottom. A permeable geomembrane is laid on the bottom. Small holes are evenly arranged at the bottom of the planting cavity so that the purified rainwater can be discharged into the water storage tank 31.

[0036] The buffer layer 22 is pebbles with a particle size of 20 to 50 mm and a thickness of 5 to 8 cm, which are used to buffer and reduce the kinetic energy of rainwater and protect the matrix soil layer; the matrix soil thickness of the planting layer 23 is 10 cm to 15 cm, and plants can be planted to form a rain garden; the filter layer 24 contains three layers of water purification filter materials, which are used to purify pollutants in the initial rainwater. The filter layer I 241 is quartz sand filter material with a thickness of 15 cm to 20 cm; the filter layer II 242 is manganese sand filter material with a particle size of 5 mm to 8 mm and a thickness of 12 cm to 15 cm; the filter layer III 243 is high-density garnet filter material with a particle size of 5 mm to 8 mm and a thickness of 20 cm to 25 cm.

[0037] The water storage box 31 is made of glass fiber reinforced plastic with a thickness of 8 to 12 mm. Support brackets 37 are arranged around the middle of the box to support the support frame 32. A planting cavity 21 is placed on the upper part of the support frame, and a water absorption device 34 extending into the box is connected to the bottom of the planting cavity; a bionic carbon fiber water grass 33 is suspended at the bottom of the support frame as a microbial carrier, which can assist in fixing microorganisms and is conducive to the enrichment of dominant bacteria. A heavy object is hung at the bottom of the bionic carbon fiber water grass to keep the water grass hanging vertically, promote the vertical stretching of the biological filler, and swing appropriately within a certain range in the water, thereby enhancing the probability of microbial attachment and the aggregation of pollutants such as nitrogen, phosphorus, and organic matter in the water body, providing nutrients for aquatic plants in the planting cavity, and improving the ability of aquatic plants to absorb and degrade COD, nitrogen and phosphorus.

[0038] The water absorbing device 34 is made of capillary water absorbing fibers and is evenly arranged at the bottom of the planting cavity. It can absorb the water in the water storage tank into the planting cavity to meet the needs of plant growth.

[0039] The plants planted are moisture-resistant and drought-resistant plants, including foxtail algae, reed, ferns, calla lilies, asparagus, loosestrife, iris, lily, canna and other plants with strong sewage purification capabilities.

[0040] Example 2

[0041] The size of the planting cavity 21 can be set to a two-stage cavity according to the site conditions, which can improve the water retention capacity and enrich the vertical space of the vegetation landscape. Figure 2 As shown, a vertically placed partition is set in the middle of the cavity to divide the cavity into a primary planting cavity a and a secondary planting cavity b. The primary planting cavity is 10 to 15 cm higher than the secondary planting cavity. The top of the partition is set in a serrated shape to facilitate rainwater overflow into the secondary planting cavity. The two-level planting cavity is composed of a pebble buffer layer 22, a planting layer 23, and a filter layer 24 from top to bottom. The pebble buffer layer 22 of the primary planting cavity is located directly below the outlet of the rainwater downpipe, and the pebble buffer layer 22 of the secondary planting cavity is located below the rainwater overflow port, and a plurality of drainage holes are evenly arranged at the bottom of the cavity, with a hole diameter of 0.5 to 1 cm.

[0042] The planting cavity has a water storage function and can be used to grow various types of plants in different seasons. After the plants grow, the cavity can be shielded to maintain coordination with the landscape plants in the sponge facility.

[0043] The permeable geomembrane adopts permeable geotextile, and the permeability coefficient is greater than 5*10 -5 m / s, a gap is set between the geomembrane and the middle pool wall, the distance is 8 to 10 cm; a slope inclined towards the secondary planting cavity is set at the bottom of the filter layer 24, and the slope is greater than 0.3%, so that a good hydrodynamic condition support frame is maintained between the primary planting cavity and the secondary planting cavity.

[0044] Example 3

[0045] like Figure 2 As shown, support brackets 37 are arranged around the middle of the box body to support the support frame 32. A planting cavity 21 is placed on the upper part of the support frame, and bionic carbon fiber water plants 33 are hung on the lower part of the support frame. Handles can be arranged around the planting cavity so that the staff can take the planting cavity out of the water storage box body. On the one hand, it is convenient to clean and replace the filler inside the planting cavity and renew the plants; on the other hand, it is convenient to clean the box body and clean and replace the biological filler hanging at the lower part of the support frame. When there is a lot of silt deposited at the bottom of the box body, the upper planting cavity box can be removed and the box body can be cleaned with clean water. The waste water is discharged from the sewage pipe at the bottom to the nearby green space or rainwater drainage pipe.

[0046] The biological filler can be made of other bionic materials such as biological rope, and the water absorbing device can be made of other water absorbing materials.

[0047] The utility model is described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the utility model. Many other changes and modifications that do not depart from the concept and scope of the utility model should be considered as the protection scope of the utility model.

[0048] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0049] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A roof rainwater purification and water storage device, characterized in that: At least comprises a purification system; the purification system consists of a planting cavity and a buffer layer, a planting layer and a filter layer arranged in the planting cavity from top to bottom; A water storage purification system is arranged downstream of the purification system; the water storage purification system consists of a water storage tank, a support frame is arranged inside the water storage tank, and microbial filler bionic carbon fiber water plants are suspended under the support frame.

2. The roof rainwater purification and water storage device according to claim 1, characterized in that: The planting cavity is placed on the upper part of the water storage tank, the bottom of the planting cavity is connected to a water absorption device extending into the water storage tank, a sewage pipe is arranged at the bottom of the water storage tank, an overflow pipe is arranged inside the water storage tank, and the outlet of the overflow pipe is connected to the nearby green space.

3. The roof rainwater purification and water storage device according to claim 1, characterized in that: An initial rain filtering system is arranged upstream of the purification system; the initial rain filtering system is composed of a rainwater downpipe, a water filter box and a diversion pipe, and the water outlet of the diversion pipe is connected to the purification system.

4. A roof rainwater purification and water storage device according to claim 3, characterized in that: The water filter box is located directly below the water outlet of the rainwater downpipe; the top of the water filter box is open, and a grille filter is arranged inside the water filter box, the length and width of the grille hole are 0.5cm to 1cm, and a plurality of water outlets are evenly arranged at the bottom of the water filter box, and the water outlets are connected to diversion pipes.

5. A roof rainwater purification and storage device according to claim 1, characterized in that: The planting cavity is made of glass fiber reinforced plastic with a thickness of 8 to 12 mm. The planting cavity is located below the outlet of the diversion pipe, a permeable geomembrane is laid on the bottom of the planting cavity, and small holes are evenly arranged on the bottom of the planting cavity.

6. A roof rainwater purification and water storage device according to claim 1, characterized in that: The buffer layer is pebbles, the particle size of the pebbles is 20-50 mm, and the thickness of the pebbles is 5-8 cm; the thickness of the matrix soil of the planting layer is 10 cm-15 cm.

7. A roof rainwater purification and storage device according to claim 1, characterized in that: The filter layer includes: the first filter layer is quartz sand filter material with a thickness of 15cm to 20cm; the second filter layer is manganese sand filter material with a particle size of 5mm to 8mm and a thickness of 12cm to 15cm; the third filter layer III is high-density garnet filter material with a particle size of 5mm to 8mm and a thickness of 20cm to 25cm.

8. The roof rainwater purification and storage device according to claim 1, characterized in that: The water storage tank is made of fiberglass, and support brackets are arranged around the middle of the tank to support the support frame. A planting cavity is placed on the upper part of the support frame. A water absorption device extending into the tank is connected to the bottom of the planting cavity. Bionic carbon fiber water plants are hung at the bottom of the support frame, and heavy objects are hung at the bottom of the bionic carbon fiber water plants to keep the water plants hanging vertically.

9. A roof rainwater purification and water storage device according to claim 2, characterized in that: The top inlet of the overflow pipe in the water storage tank is close to the top of the tank, and a control valve is arranged on the sewage pipe.

Images