CN106639180B - A kind of rainwater accumulation system and its construction method for roof garden - Google Patents

Abstract

The invention mainly discloses a rainwater collection and storage system for a roof garden and a construction method thereof. and the first vegetation layer, the water collection unit includes a rainwater collection bucket and a water delivery pipe arranged under the gravel road, the processing unit includes a landscape pool, a sedimentation tank and a purifier connected in sequence, and the water storage unit includes a first storage tank and a second storage tank. Reservoirs, the first cistern is located on the roof and the second cistern is located under the house. The present invention integrates roof construction, rainwater collection and treatment, and water terminal into one, takes overall consideration into consideration, effectively reduces the pollution of rainwater, protects the water environment, realizes the collection, purification, storage and reuse of rainwater, and improves the utilization of water resources. At the same time, it can make the maintenance and irrigation of the roof garden more convenient, reduce the energy of water transmission, and be more economical and environmentally friendly.

Description

Rainwater collection and storage system for roof garden and construction method thereof

technical field

The invention relates to a rainwater collection and storage system for roof gardens and a construction method thereof.

Background technique

In the prior art, rainwater collection, in its entirety, should be called "rainwater collection and utilization system", which refers to the collection and utilization of rainwater runoff collected from building roofs, roads, squares and other hardened surfaces, and after collection - water delivery - purification. Water—Storage and other channels accumulate rainwater to provide rainwater supply for greening, landscape water bodies, washing and groundwater sources, so as to achieve the purpose of comprehensive utilization of rainwater resources and water conservation. The supply of tap water in many cities and regions has been unable to keep pace with the development of urbanization. The urban watering and greening, road flushing and other public water use and emerging water industries such as car washing have further increased the burden of tap water supply. However, in the rainstorm season every year, the flood of rainwater has caused great difficulties for urban drainage. The collection and utilization of rainwater just solves the two major problems brought to urban construction. Rainwater collection and utilization system has a wide range of significance, such as slowing down urban rainwater floods and groundwater level decline, controlling rainwater runoff pollution, and improving urban ecological environment.

In daily life, the amount of rainwater accumulated on the roof cannot be underestimated. If this part of rainwater can be collected and reused, resources can be saved to a certain extent. Roof gardens not only have excellent cooling and heat insulation effects, but also can beautify the environment, purify the air, improve local microclimates, enrich the pitching landscape of the city, compensate for the green ground occupied by buildings, greatly improve the green coverage rate of the city, and improve people's living conditions. Living conditions and improving the quality of life are a kind of roofing form worthy of vigorous promotion. However, roof gardens require a large amount of water and use more water. Nowadays, with the increasing shortage of water resources, the maintenance of roof gardens is more stressful, and the general water storage unit is built underground. When the upper buildings or roof gardens need water, they need to The transportation from the ground to the roof is long, consumes a lot of energy, and is inconvenient for irrigation.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a rainwater collection and storage system for roof gardens and a construction method thereof in view of the deficiencies of the prior art, which combine roof construction, rainwater collection and treatment, and water terminals into one, take overall consideration into consideration, and effectively It reduces the pollution of rainwater, protects the water environment, realizes the collection, purification, storage and reuse of rainwater, improves the utilization rate of water resources, and reduces the pressure of water use. energy, more economical and environmentally friendly.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

A rainwater collection and storage system for a roof garden, comprising a roof, a water collection unit, a treatment unit, a water storage unit and a water use unit, the roof is provided with a cobblestone road and a first vegetation layer, the cobble road and the The first vegetation layer is staggered. The water collection unit includes a rainwater collection bucket and a water delivery pipe. The rainwater collection bucket is arranged on the lower side of the gravel road at regular intervals. It is connected to the landscape pool through a water delivery pipe, and the purifier is connected to the water storage unit through a connecting pipe. The water storage unit includes a first water storage tank and a second water storage tank. below the house. The rainwater during rainfall and the excess rainwater in the first vegetation layer are collected by the rainwater collection bucket. The rainwater collection bucket is designed under the cobblestone road, so that the rainwater is filtered through the layers of cobblestones before entering the rainwater collection bucket. , and then enter the rainwater collection bucket to prevent large particles from clogging the rainwater collection bucket. The rainwater collected through the rainwater collection bucket enters the landscape pool through the water pipe, and aquatic organisms are planted in the landscape pool. At the same time, it also provides water resources for the landscape pool. Then, the excess purified water in the landscape pool is transported to the sedimentation tank through the connecting pipe, and the sedimentation reaction is carried out in the sedimentation tank to precipitate the impurities in the water for further purification. The water that has undergone precipitation reaction is sent to the purifier for final purification treatment, and the treated water is sent to the first reservoir and the second reservoir for storage, so as to facilitate household use, save energy, environmental protection, economy and pollution. Less and healthier, to maximize the use of natural resources, in addition, the water storage unit can also play a role in adjusting the water storage to reduce the pressure on the municipal pipe network, improve the economic benefits of rainwater treatment projects, and greatly reduce the workload of operation and maintenance , greatly increasing the practicability and operability of the rainwater treatment project, which is conducive to promoting the development of the sponge city; the two water reservoirs are set up to improve the water storage capacity, and the first water reservoir is set on the roof, which is convenient for the roof garden. Watering and water use on high floors, the water delivery distance is short, there is no need to add too much power equipment, and electricity is saved. The second reservoir is set under the house, which is convenient for water use on the ground and low floors, and the water delivery speed is fast. Make full use of rain.

Further, the interior of the sedimentation tank is provided with an isolation plate, the isolation plate is provided with through holes, the isolation plate separates the sedimentation tank into a water layer and a drug layer, the drug layer is provided with a precipitant, and the water layer is connected to the purifier through a connecting pipe. The installed isolation plate separates the water layer and the drug layer, so that the polluted and harmful substances in the water are deposited in the drug layer under the action of the precipitant, so as to ensure the clarification of the water layer, so that the clean water in the water layer is output to the purifier; The through holes provided in the isolation plate make the precipitant and the water in the water layer contact each other, so as to cause chemical or physical reaction and sedimentation. The precipitant can be selected from alkaline substances, sulfides, etc.

Further, the rainwater collection hopper is in the shape of a large upper and lower small funnel, the top surface of the rainwater collection hopper is provided with a filter mesh screen, and the inner side wall of the rainwater collection hopper is evenly provided with spikes. The funnel-shaped rainwater collection hopper is set to prevent rainwater from splashing, the filter mesh screen is set to further filter the water entering the rainwater collection hopper, and the set spikes smash the large particles that enter the rainwater collection hopper and granulate them. Smaller, so that it is not easy to block the water pipe.

Further, a concrete layer is poured on the upper side of the first water reservoir, a waterproof layer is arranged on the upper side of the concrete layer, and a second vegetation layer is arranged on the upper side of the waterproof layer. The concrete layer is used to reinforce the first reservoir and the second reservoir. The waterproof layer is provided to prevent external sewage from entering the first reservoir and pollute the clean water in the first reservoir. The second vegetation layer is provided for Covering the first water reservoir, beautifying the appearance, and also playing the role of water storage to prevent rainwater from infiltrating into the first water reservoir.

Further, the water collecting unit further includes a water collecting ditch, the water collecting ditch is arranged on the first vegetation layer in a stepped shape, and the water collecting ditch is respectively connected with the gravel road and the drainage pipe outside the house. The water collecting ditch transports part of the excess rainwater on the first vegetation layer to the rainwater collection bucket, and part of it is discharged along the drainage pipe. The drainage pipe and the rainwater collection bucket work together to speed up the drainage speed and prevent the first vegetation layer from being damaged by excessive rainwater. hypoxia death.

Further, the water use unit includes an irrigation pipe, the irrigation pipe is connected with the first reservoir, the irrigation pipe is provided with an atomizing nozzle, a drip hole, a timer and a gate, the timer and the gate are connected, and the atomizing nozzle and the drip hole are arranged at intervals, There is a filter membrane on the drip hole. The atomizing nozzle includes a water spray pipe, a base and a locking head. The base is provided with a groove, and the locking head is rotatably connected in the groove. The water pipe is connected with the locking head through the connecting hole, at least eight first water spray holes are evenly arranged on the side wall of the base according to the circumferential direction, and the side wall of the locking head is provided with corresponding first water spray holes. The second water spray hole. When the first vegetation layer and the second vegetation layer need to be watered, the valve is opened, the water in the first reservoir flows out along the irrigation pipe, and the vegetation is irrigated through the atomizing nozzle and the drip hole respectively. Ensure the normal growth of vegetation in the roof garden, reduce the demand for external water resources, and further achieve the effect of making full use of the recycled rainwater. The timer can be used to set the watering time according to the actual situation, realize automatic watering, and improve the efficiency of watering. , avoid watering too much or too little; the filter membrane on the drip hole prevents the external soil and other particulate matter from blocking the drip hole, and ensures the normal operation of the irrigation pipe; when the atomizing nozzle is working, the first water spray hole and the second water spray hole Corresponding to the holes, the water flow enters the locking head from the spray pipe, and then sprays out from the eight second spray holes and the first spray hole, which increases the irrigation area, and the irrigation is uniform, which can well irrigate the surrounding vegetation. , When the atomizing nozzle is not required to work, as long as the locking head is rotated to make the second nozzle and the first nozzle intersect, the second nozzle can be blocked so that water cannot be sprayed out.

Further, the outer side wall of the locking head is provided with a slider, the inner side wall of the base is provided with a chute, the chute is matched with the slider, and the chute includes a first slot, an arc slot and a second slot. A card slot and a second card slot are respectively located on the left and right sides of the arc-shaped slot, and a rotating block is arranged on the top surface of the locking head. The set chute is convenient for the sliding and restricting of the slider. When the slider is in the first slot, the first water spray hole is connected with the second water spray hole. When the slider is in the second slot, the first water spray hole is connected. The holes and the second water spray holes are staggered, which makes the opening and closing of the locking head more convenient, and the provided rotating block is convenient for controlling the rotation of the locking head.

As above-mentioned a kind of construction method for the rainwater collection and storage system of roof garden, comprises the steps:

Step 1. Construction of the second reservoir

a. Determine the volume of the second reservoir according to the water consumption of the family, and then determine the depth and width of the foundation pit according to the size of the second reservoir, and indicate it in the design drawing, and then determine the second reservoir according to the house design drawing. The installation location of the reservoir, clean the surface of the location, remove the garbage and gravel, and then mark the location to facilitate the excavation of the foundation pit;

b. According to the design drawing, use excavator to excavate the foundation pit at the marked position, then clean up the gravel and garbage in the foundation pit, and ram the foundation pit, then lay geotextile and buffer layer in the foundation pit, and lay the foundation pit in the foundation pit. A pipeline channel is reserved on one side of the pit;

c. Build a second reservoir in the foundation pit, reserve a connecting nozzle on the second reservoir, and install waterproof glue at the connecting nozzle;

d. Carry out the tightness test, and fill the leaking position of the second reservoir with epoxy resin to ensure the tightness of the second reservoir;

Step 2. Construction of the treatment unit

Step 3. Construction of the catchment unit

1. Construction of rainwater collection bucket

a. According to the design drawing, install the rainwater collection bucket at the specified position, the distance between adjacent rainwater collection buckets is 20-50cm, and respectively install collection pipes at the bottom of the rainwater collection buckets, and the collection pipes pass through a general water pipe connected to the landscape pool;

b. Lay the root layer on the top layer of the roof, lay the first vegetation layer and pebbles on the upper side of the root layer according to the design drawing, lay the pebbles above the rainwater collection bucket, plant plants on the first vegetation layer, and Reserve the installation space of the first reservoir;

2. Excavation of the catchment ditch

On the first vegetation layer, excavate a water collecting ditch according to the terrain, and the water collecting ditch is stepped, and the water collecting ditch is connected with the cobblestone road and the drainage pipe respectively;

Step 4. Installation of the first reservoir

a. According to the design drawing and water consumption, build the first reservoir at the installation space of the first reservoir, lay a sealing cloth in the first reservoir, and then carry out the tightness test to check the leakage of the first reservoir. The position of the first reservoir is filled with epoxy resin to ensure the tightness of the first reservoir;

b. A concrete layer is poured on the top of the first reservoir, a waterproof layer is laid on the top of the concrete layer, and a second vegetation layer is laid on the top of the waterproof layer;

c. Connect the first reservoir and the output end of the purifier through a connecting pipe;

Step 5. Construction of water unit

An irrigation pipe is connected to the first water reservoir, and the irrigation pipes are arranged on the first vegetation layer horizontally and vertically.

Further, the construction of the processing unit of step 2 includes

1. Installation of the purifier

a. Pour the roof with concrete, clean the surface of the roof, level the roof, apply waterproof paint on the roof, then lay a waterproof layer, and then select the installation point of the purifier on the roof according to the design drawing;

b. Set up a bracket at the installation point of the purifier, fix the purifier on the bracket by screws, and connect the purifier with the connecting pipe of the second reservoir through a connecting pipe;

2. Installation of sedimentation tank

a. According to the design drawing, select the installation point of the sedimentation tank on the roof, mark it with a ruler and lime powder, and then draw a central cross line and a reference line at the mark;

b. Set up the formwork at the mark, and then pour it with concrete. After the pouring is completed, remove the formwork and carry out the sealing test;

c. Place the precipitant at the bottom of the sedimentation tank, then pour symmetrical blocks on the inner wall of the sedimentation tank, and then place the isolation plate on the block to ensure that the distance between the isolation plate and the bottom of the sedimentation tank is 30 ~ 50cm;

d. Install a sealing plate on the top of the sedimentation tank;

e. Connect the sedimentation tank and the purifier through a connecting pipe, then return to soil for landfill, and bury the sedimentation tank and the purifier at the bottom of the roof;

3. Excavation of landscape pool

a. Build landscape pools on the left and right sides of the roof, lay the base layer at the bottom of the landscape pool, and build fences around the landscape pool;

b. Cultivate aquatic organisms in the landscape pond, and connect the upper layer of the landscape pond to the sedimentation tank through a connecting pipe.

The present invention has the following beneficial effects due to the adoption of the above-mentioned technical solutions:

The rainwater during rainfall and the excess rainwater in the first vegetation layer are collected by the rainwater collection bucket. The rainwater collection bucket is designed under the cobblestone road, so that the rainwater is filtered through the layers of cobblestones before entering the rainwater collection bucket. , and then enter the rainwater collection bucket to prevent large particles from clogging the rainwater collection bucket. The rainwater collected through the rainwater collection bucket enters the landscape pool through the water pipe, and aquatic organisms are planted in the landscape pool. At the same time, it also provides water resources for the landscape pool. Then, the excess purified water in the landscape pool is transported to the sedimentation tank through the connecting pipe, and the sedimentation reaction is carried out in the sedimentation tank to precipitate the impurities in the water for further purification. The water that has undergone precipitation reaction is sent to the purifier for final purification treatment, and the treated water is sent to the first reservoir and the second reservoir for storage, so as to facilitate household use, save energy, environmental protection, economy and pollution. Less and healthier, to maximize the use of natural resources; in addition, the water storage unit can also play a role in adjusting the water storage to reduce the pressure on the municipal pipe network, improve the economic benefits of rainwater treatment projects, and greatly reduce the workload of operation and maintenance , greatly increasing the practicability and operability of the rainwater treatment project, which is conducive to promoting the development of the sponge city; the two water reservoirs are set up to improve the water storage capacity, and the first water reservoir is set on the roof, which is convenient for the roof garden. Watering and water use on high floors, the water delivery distance is short, there is no need to add too much power equipment, and electricity is saved. The second reservoir is set under the house, which is convenient for water use on the ground and low floors, and the water delivery speed is fast. Make full use of rain.

The present invention integrates roof construction, rainwater collection and treatment, and water terminal into one, takes overall consideration into consideration, effectively reduces the pollution of rainwater, protects the water environment, realizes the collection, purification, storage and reuse of rainwater, and improves the utilization of water resources. At the same time, it can make the maintenance and irrigation of the roof garden more convenient, reduce the energy of water transmission, and be more economical and environmentally friendly.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings:

1 is a schematic structural diagram of a rainwater collection and storage system for roof gardens according to the present invention;

Fig. 2 is the structural representation of A direction in Fig. 1;

Fig. 3 is the plan structure schematic diagram of the roof in the present invention;

Fig. 4 is the structural representation of rainwater collecting bucket in the present invention;

Fig. 5 is the structural representation of irrigation pipe in the present invention;

6 is a schematic structural diagram of an atomizing nozzle in the present invention.

Reference numerals: 1. roof; 2. gravel road; 3. first vegetation layer; 4. rainwater collection bucket; 5. water pipe; 6. landscape pool; 7. sedimentation tank; 8. purifier; 9. first Reservoir; 10. Second Reservoir; 11. Separation plate; 12. Through hole; 13. Water layer; 14. Drug layer; 15. Filter mesh screen; 16. Spike part; 17. Concrete layer; 18, waterproof layer; 19, second vegetation layer; 20, irrigation pipe; 21, atomizing nozzle; 22, drip hole; 23, filter membrane; 24, water spray pipe; 25, base; 26, locking head; 27 , groove; 28, connecting hole; 29, the first water spray hole; 30, the second water spray hole; 31, the slider; 32, the first slot; 33, the arc slot; 34, the second slot; 35, rotating block; 36, connecting pipe; 37, collecting ditch.

Detailed ways

As shown in Figures 1-6, it is a rainwater collection and storage system for a roof garden of the present invention, comprising a roof 1, a water collection unit, a treatment unit, a water storage unit and a water use unit, and the roof 1 is provided with cobblestone paving. The formed gravel road 2 and the first vegetation layer 3, the gravel road 2 and the first vegetation layer 3 are alternately arranged, the water collection unit includes a rainwater collection bucket 4 and a water delivery pipe 5, and the rainwater collection bucket 4 is arranged on the gravel road 2 at uniform intervals. On the lower side of the rainwater collecting bucket 4, the rainwater collecting bucket 4 is in the shape of a funnel with a large upper and a small lower. The funnel-shaped rainwater collecting bucket 4 is installed to prevent rainwater from splashing, the filter mesh screen 15 is installed to further filter the water entering the rainwater collecting bucket 4, and the spiked portion 16 is installed to crush the large particles entering the rainwater collecting bucket 4. Substances, make their particles smaller, so that it is not easy to block the water pipe 5. The water collecting unit further includes a water collecting ditch 37, which is arranged on the first vegetation layer 3 in a stepped shape. The water collecting ditch 37 is respectively connected with the gravel road 2 and the drainage pipe outside the house. The water collecting ditch 37 transports part of the excess rainwater on the first vegetation layer 3 to the rainwater collection bucket 4, and part of it is discharged along the drain pipe. The drainpipe cooperates with the rainwater collection bucket 4 to accelerate the drainage speed and avoid the first vegetation layer 3. Death due to lack of oxygen due to excessive rain.

The processing unit includes a landscape tank 6, a sedimentation tank 7 and a purifier 8 connected in sequence. The rainwater collection bucket 4 is connected to the landscape tank 6 through a water delivery pipe 5. The interior of the sedimentation tank 7 is provided with an isolation board 11, and the isolation board 11 is provided with a pass through. The hole 12 and the isolation plate 11 separate the sedimentation tank 7 into a water layer 13 and a drug layer 14 . The provided isolation plate 11 separates the water layer 13 and the drug layer 14, so that the pollution and harmful substances in the water are deposited in the drug layer 14 under the action of the precipitant, so as to ensure the clarification of the water layer 13 and make the water layer 13 clean. The water is output to the purifier 8; the through holes 12 provided in the isolation plate 11 make the precipitant and the water in the water layer 13 contact each other, so that the chemical or physical reaction occurs, and sedimentation occurs, and the precipitant can be selected from alkaline substances, sulfurized things etc. The purifier 8 is connected to the water storage unit through the connecting pipe 36. The water storage unit includes a first water storage tank 9 and a second water storage tank 10. The first water storage tank 9 is located on the roof 1, and the second water storage tank 10 is located in the house. below. A concrete layer 17 is poured on the upper side of the first reservoir 9 , a waterproof layer 18 is arranged on the upper side of the concrete layer 17 , and a second vegetation layer 19 is arranged on the upper side of the waterproof layer 18 . The concrete layer 17 is used to reinforce the first reservoir 9, the waterproof layer 18 provided prevents the sewage from the outside from entering the first reservoir 9 and pollutes the clear water in the first reservoir 9, and the second vegetation layer 19 is provided for To cover the first water reservoir 9 , beautify the appearance, and also play the role of water storage and water retention, and prevent rainwater from infiltrating into the first water reservoir 9 .

The water unit includes an irrigation pipe 20, the irrigation pipe 20 is connected with the first reservoir 9, and the irrigation pipe 20 is provided with an atomizing nozzle 21, a drip hole 22, a timer and a gate, the timer is connected with the gate, and the atomizing nozzle 21 and the gate are connected. The drip holes 22 are arranged at intervals, and the drip holes 22 are provided with a filter membrane 23, and the filter membrane 23 on the drip holes 22 prevents particulate matter such as external soil from blocking the drip holes 22, so as to ensure the normal operation of the irrigation pipe 20; When the layer 3 and the second vegetation layer 19 are watered, the valve is opened, and the water in the first reservoir 9 flows out along the irrigation pipe 20, and the vegetation is watered through the atomizing nozzle 21 and the drip hole 22 respectively, and the watering range is wide. , to ensure the normal growth of vegetation in the roof 1 garden, reduce the demand for external water resources, and further achieve the effect of making full use of the recycled rainwater. The timer can be used to set the watering time according to the actual situation, realize automatic watering, and improve watering. efficiency and avoid over- or under-watering. The atomizing nozzle 21 includes a water spray pipe 24, a base 25 and a locking head 26. The base 25 is provided with a groove 27, the locking head 26 is rotatably connected in the groove 27, and the bottom surface of the groove 27 is provided with a connecting hole 28 The water spray pipe 24 is connected to the locking head 26 through the connecting hole 28, at least eight first water spray holes 29 are evenly arranged on the side wall of the base 25 in the circumferential direction, and the side wall of the locking head 26 is provided with The first water spray holes 29 correspond to the second water spray holes 30 . When the atomizing nozzle 21 is working, the first water spray holes 29 correspond to the second water spray holes 30, and the water flow enters the locking head 26 from the water spray pipe 24, and then flows from the eight second water spray holes 30 and the first spray holes 30 to the locking head 26. The water hole 29 is sprayed out, which increases the irrigation area, and the watering is uniform, which can irrigate the surrounding vegetation well. When the atomizing nozzle 21 does not need to work, just rotate the locking head 26 to make the second water nozzle 30 and the first nozzle 30. Once the water spray holes 29 are staggered, the second water spray holes 30 can be blocked, so that water cannot be sprayed out. A slider 31 is provided on the outer side wall of the locking head 26, and a chute is provided on the inner side wall of the base 25. The chute matches the slider 31, and the chute includes a first card slot 32, an arc slot 33 and a second The card slot 34 , the first card slot 32 and the second card slot 34 are respectively located on the left and right sides of the arc-shaped slot 33 , and a rotating block 35 is provided on the top surface of the locking head 26 . The provided chute facilitates the sliding and restriction of the slider 31. When the slider 31 is located in the first slot 32, the first water spray hole 29 communicates with the second spray hole 30, and when the slider 31 is located in the second slot 32 At 34 o'clock, the first water spray holes 29 and the second water spray holes 30 are staggered, which makes the opening and closing of the locking head 26 more convenient.

The rainwater during rainfall and the excess rainwater in the first vegetation layer 3 are collected by the rainwater collection bucket 4. The rainwater collection bucket 4 is designed under the cobblestone road 2, so that the rainwater passes through the rainwater collection bucket 4 before entering the rainwater collection bucket 4. The pebbles are filtered layer by layer, and then enter the rainwater collection bucket 4 to prevent large particles from blocking the rainwater collection bucket 4. The rainwater collected through the rainwater collection bucket 4 enters the landscape pool 6 through the water pipe 5, and the landscape pool 6 is planted. There are aquatic organisms, and the rainwater is first purified by biological reaction in the landscape pond 6, and also provides water resources for the landscape pond 6, and then the excess purified water in the landscape pond 6 is transported to the sedimentation tank 7 through the connecting pipe 36. The precipitation reaction is carried out in the sedimentation tank 7, and the impurities in the water are precipitated for further purification, and then the water that has undergone the precipitation reaction is transported to the purifier 8 for final purification treatment, and the treated water is transported to the first. The reservoir 9 and the second reservoir 10 are stored for family use, energy saving, environmental protection and economy, less pollution, more health, and maximized utilization of natural resources. In addition, the water storage unit can also adjust the water storage capacity. In order to reduce the pressure of the municipal pipe network, improve the economic benefits of rainwater treatment projects, greatly reduce the workload of operation and maintenance, greatly increase the implementability and operability of rainwater treatment projects, and help promote the development of sponge cities; Two water storage tanks to improve the water storage capacity. The first water storage tank 9 is set on the roof 1, which is convenient for the watering of the garden on the roof 1 and the water for high floors. The water delivery distance is short, and there is no need to add excessive power equipment, saving Electric energy, the second water storage tank 10 is arranged below the house, which is convenient for water use on the ground and low floors, the water delivery speed is fast, and the rainwater is fully utilized.

As above-mentioned a kind of construction method for the rainwater collection and storage system of roof garden, comprises the steps:

Step 1. Construction of the second reservoir 10

a. Determine the volume size of the second reservoir 10 according to the water consumption of the household, and then determine the depth and width of the foundation pit according to the size of the second reservoir 10, and indicate it in the design drawing, and then determine according to the house design drawing. The installation position of the second reservoir 10, clean the surface of the position, remove the garbage and gravel, and then mark the position to facilitate the excavation of the foundation pit;

b. According to the design drawing, use excavator to excavate the foundation pit at the marked position, then clean up the gravel and garbage in the foundation pit, and ram the foundation pit, then lay geotextile and buffer layer in the foundation pit, and lay the foundation pit in the foundation pit. A pipeline channel is reserved on one side of the pit;

c. Masonry the second reservoir 10 in the foundation pit, and reserve a connection nozzle on the second reservoir 10, and install waterproof glue at the connection nozzle;

d. Carry out a tightness test, and fill the leaking position of the second reservoir 10 with epoxy resin to ensure the tightness of the second reservoir 10;

Step 2. Construction of the treatment unit

1. Installation of purifier 8

a. Pour the roof 1 with concrete, clean the surface of the roof 1, level the roof 1, apply waterproof paint on the roof 1, then lay the waterproof layer 18, and then select the purifier 8 on the roof 1 according to the design drawing. the installation point;

b. Set up a bracket at the installation point of the purifier 8, fix the purifier 8 on the bracket through screws, and connect the purifier 8 to the connection nozzle of the second reservoir 10 through the connecting pipe 36;

2. Installation of sedimentation tank 7

a. According to the design drawing, select the installation point of the sedimentation tank 7 on the roof 1, and make a mark with a ruler and lime powder, and then draw a central cross line and a reference line at the mark;

b. Set up the formwork at the mark, and then pour it with concrete. After the pouring is completed, remove the formwork and carry out the sealing test;

c. Place the precipitant at the bottom of the sedimentation tank 7, then pour a symmetrical block on the inner wall of the sedimentation tank 7, and then place the isolation plate 11 on the block to ensure the distance between the isolation plate 11 and the bottom of the sedimentation tank 7 30～50cm;

d. A sealing plate is installed on the top of the sedimentation tank 7;

e, the sedimentation tank 7 and the purifier 8 are connected through the connecting pipe 36, and then back to earth for landfill, and the sedimentation tank 7 and the purifier 8 are buried at the bottom of the roof;

3. Excavation of landscape pool 6

A, build landscape pool 6 on the left and right sides of roof 1 respectively, lay the base layer at the bottom of landscape pool 6, and build fences around landscape pool 6;

b. Cultivate aquatic organisms in the landscape tank 6, and connect the upper layer of the landscape tank 6 to the sedimentation tank 7 through the connecting pipe 36.

Step 3. Construction of the catchment unit

1. Construction of rainwater collection bucket 4

a. According to the design drawing, install the rainwater collection bucket 4 at the specified position, and the distance between the adjacent rainwater collection buckets 4 is 20-50cm. The bottom of the rainwater collection bucket 4 is respectively installed with collection pipes, and the collection pipes pass through a total The water pipe 5 is connected with the landscape pool 6;

b, laying a root layer on the top layer of the roof 1, laying the first vegetation layer 3 and cobblestones respectively on the upper side of the root layer according to the design drawing, laying the cobblestones above the rainwater collection bucket 4, on the first vegetation layer 3 Planting plants, and reserving the installation space of the first reservoir 9;

2. Excavation of catchment ditch 37

On the first vegetation layer 3, excavate a water collecting ditch 37 according to the terrain height, and the water collecting ditch 37 is in a stepped shape, and the water collecting ditch 37 is respectively connected with the cobblestone road 2 and the drainage pipe;

Step 4. Installation of the first reservoir 9

a. According to the design drawing and the water consumption, build the first reservoir 9 at the installation space of the first reservoir 9, lay a sealing cloth in the first reservoir 9, and then carry out the tightness test. The leaking position of the reservoir 9 is filled with epoxy resin to ensure the tightness of the first reservoir 9;

b, pour concrete layer 17 above the first reservoir 9, lay waterproof layer 18 above the concrete layer 17, and lay the second vegetation layer 19 above the waterproof layer 18;

c. Connect the output end of the first reservoir 9 and the purifier 8 through the connecting pipe 36;

Step 5. Construction of water unit

Irrigation pipes 20 are connected to the first reservoir 9 , and the irrigation pipes 20 are arranged on the first vegetation layer 3 in a horizontal and vertical manner.

The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention in order to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims (8)

1. A rainwater collection and storage system for a roof garden, comprising a roof, a water collection unit, a processing unit, a water storage unit and a water use unit, characterized in that: the roof is provided with a cobblestone road paved with cobblestones and the first vegetation layer, the gravel road and the first vegetation layer are arranged alternately, the water collecting unit comprises a rainwater collection bucket and a water delivery pipe, and the rainwater collection bucket is arranged on the lower side of the gravel road at uniform intervals, The processing unit includes a landscape pond, a sedimentation pond and a purifier connected in sequence, the rainwater collection bucket is connected to the landscape pond through the water delivery pipe, and the purifier is connected to the water storage unit through a connecting pipe. The water storage unit includes a first storage tank and a second storage tank, the first storage tank is located on the roof, the second storage tank is located under the house, and the interior of the sedimentation tank is provided with isolation. The isolation plate is provided with through holes, and the isolation plate separates the sedimentation tank into a water layer and a drug layer, the drug layer is provided with a precipitant, and the water layer is connected to the purifier connection. 2. A rainwater collection and storage system for a roof garden according to claim 1, characterized in that: the rainwater collection hopper is in the shape of a large upper and lower small funnel, and the top surface of the rainwater collection hopper is provided with a filter A mesh screen, the inner side wall of the rainwater collecting bucket is evenly provided with spikes. 3. A rainwater collection and storage system for a roof garden according to claim 1, wherein a concrete layer is poured on the upper side of the first reservoir, and a waterproof layer is provided on the upper side of the concrete layer. The upper side of the waterproof layer is provided with a second vegetation layer. 4 . The rainwater collection and storage system for roof gardens according to claim 1 , wherein the water collection unit further comprises a water collection ditch, and the water collection ditch is arranged on the first floor in a stepped shape. 5 . On the vegetation layer, the water collecting ditch is respectively connected with the gravel road and the drainage pipe outside the house. 5. A rainwater collection and storage system for a roof garden according to claim 1, wherein the water use unit comprises an irrigation pipe, and the irrigation pipe is connected to the first reservoir, and the irrigation pipe The pipe is provided with an atomizing nozzle, a drip hole, a timer and a gate, the timer is connected with the gate, the atomizing nozzle and the drip hole are arranged at intervals, and the drip hole is provided with a filter membrane, so the The atomizing nozzle includes a water spray pipe, a base and a locking head, the base is provided with a groove, the locking head is rotatably connected in the groove, and a connecting hole is provided on the bottom surface of the groove, The water spray pipe is connected to the locking head through the connecting hole, at least eight first water spray holes are evenly arranged on the side wall of the base in the circumferential direction, and the side wall of the locking head is A second water spray hole corresponding to the first water spray hole is provided. 6. A rainwater collection and storage system for a roof garden according to claim 5, wherein a slider is provided on the outer side wall of the locking head, and a chute is provided on the inner side wall of the base , the sliding groove is matched with the sliding block, and the sliding groove includes a first card groove, an arc groove and a second card groove, and the first card groove and the second card groove are respectively located in the arc groove. On the left and right sides of the groove, the top surface of the locking head is provided with a rotating block. 7. the construction method of a kind of rainwater collection and storage system for roof garden as claimed in claim 1 is characterized in that: comprise the steps: Step 1. Construction of the second reservoir a. Determine the volume of the second reservoir according to the water consumption of the family, and then determine the depth and width of the foundation pit according to the size of the second reservoir, and indicate it in the design drawing, and then determine the second reservoir according to the house design drawing. The installation location of the reservoir, clean the surface of the location, remove the garbage and gravel, and then mark the location to facilitate the excavation of the foundation pit; b. According to the design drawing, use excavator to excavate the foundation pit at the marked position, then clean up the gravel and garbage in the foundation pit, and ram the foundation pit, then lay geotextile and buffer layer in the foundation pit, and lay the foundation pit in the foundation pit. A pipeline channel is reserved on one side of the pit; c. Build a second reservoir in the foundation pit, reserve a connecting nozzle on the second reservoir, and install waterproof glue at the connecting nozzle; d. Carry out the tightness test, and fill the leaking position of the second reservoir with epoxy resin to ensure the tightness of the second reservoir; Step 2. Construction of the treatment unit Step 3. Construction of the catchment unit 1. Construction of rainwater collection bucket a. According to the design drawing, install the rainwater collection bucket at the specified position, the distance between adjacent rainwater collection buckets is 20-50cm, and respectively install collection pipes at the bottom of the rainwater collection buckets, and the collection pipes pass through a general water pipe connected to the landscape pool; b. Lay the root layer on the top layer of the roof, lay the first vegetation layer and pebbles on the upper side of the root layer according to the design drawing, lay the pebbles above the rainwater collection bucket, plant plants on the first vegetation layer, and Reserve the installation space of the first reservoir; 2. Excavation of the catchment ditch On the first vegetation layer, excavate a water collecting ditch according to the terrain, and the water collecting ditch is stepped, and the water collecting ditch is connected with the cobblestone road and the drainage pipe respectively; Step 4. Installation of the first reservoir a. According to the design drawing and water consumption, build the first reservoir at the installation space of the first reservoir, lay a sealing cloth in the first reservoir, and then carry out the tightness test to check the leakage of the first reservoir. The position of the first reservoir is filled with epoxy resin to ensure the tightness of the first reservoir; b. A concrete layer is poured on the top of the first reservoir, a waterproof layer is laid on the top of the concrete layer, and a second vegetation layer is laid on the top of the waterproof layer; c. Connect the first reservoir and the output end of the purifier through a connecting pipe; Step 5. Construction of water unit Irrigation pipes are connected to the first water reservoir, and the irrigation pipes are arranged on the first vegetation layer horizontally and vertically. 8. The construction method of a rainwater collection and storage system for a roof garden according to claim 7, wherein the construction of the processing unit in step 2 comprises the following steps: 1. Installation of the purifier a. Pour the roof with concrete, clean the surface of the roof, level the roof, apply waterproof paint on the roof, then lay a waterproof layer, and then select the installation point of the purifier on the roof according to the design drawing; b. Set up a bracket at the installation point of the purifier, fix the purifier on the bracket by screws, and connect the purifier with the connecting pipe of the second reservoir through a connecting pipe; 2. Installation of sedimentation tank a. According to the design drawing, select the installation point of the sedimentation tank on the roof, mark it with a ruler and lime powder, and then draw a central cross line and a reference line at the mark; b. Set up the formwork at the mark, and then pour it with concrete. After the pouring is completed, remove the formwork and conduct a sealing test; c. Place precipitant at the bottom of the sedimentation tank, then pour symmetrical blocks on the inner wall of the sedimentation tank, and then place an isolation plate on the block to ensure that the distance between the isolation plate and the bottom of the sedimentation tank is 30 ~ 50cm; d. Install a sealing plate on the top of the sedimentation tank; e. Connect the sedimentation tank and the purifier through a connecting pipe, then return to soil for landfill, and bury the sedimentation tank and the purifier at the bottom of the roof; 3. Excavation of landscape pool a. Build landscape pools on the left and right sides of the roof, lay the base layer at the bottom of the landscape pool, and build fences around the landscape pool; b. Cultivate aquatic organisms in the landscape pond, and connect the upper layer of the landscape pond to the sedimentation tank through a connecting pipe.