Green roof construction method integrating rainwater collection, purification, reuse and planting

Abstract

The invention discloses a green roof construction method integrating rainwater collection, purification, recycling and planting. The green roof construction method comprises the steps of roof base layer treatment, coating and rolling composite waterproof engineering, rainwater collection system installation, rainwater purification system installation, planting layer construction, irrigation system design and rainwater recycling system installation. According to the green roof construction method integrating rainwater collection, purification, recycling and planting, effective collection of roof rainwater is achieved through the arrangement of the rainwater collection device, waste of rainwater resources is avoided, the collected rainwater reaches the recycling standard through purification treatment and can be used for irrigation, flushing and other non-drinking water purposes, and the environment-friendly effect is achieved. According to the system, rainwater is recycled, the urban green land area is increased through the construction of the planting roof, the urban microclimate is improved, the living quality of residents is improved, the purified rainwater is used for irrigation and recycling, the use amount of tap water is reduced, energy consumption is reduced, and the concept of green energy conservation is met.

Description

Technical Field

[0001] The invention relates to the technical field of roof construction, and in particular to a green roof construction method integrating rainwater collection, purification, recycling and planting. Background Art

[0002] With the accelerated advancement of urbanization, the problem of water shortage has become increasingly prominent. Rainwater, as an important natural resource, plays an important role in the utilization of urban water resources. Green roofs, as an important part of modern urban green buildings, can not only enrich urban greening landscapes, but also improve urban microclimate and enhance the quality of life of residents. However, traditional green roof construction methods often ignore the collection and utilization of rainwater, resulting in a waste of rainwater resources. Therefore, the present invention proposes a roof construction method that integrates rainwater collection, purification, reuse and planting, aiming to achieve efficient collection, purification and reuse of rainwater, and organically combine it with green roofs to achieve the purpose of saving water resources and improving environmental quality. Summary of the invention

[0003] The purpose of the present invention is to provide a green roof construction method that integrates rainwater collection, purification, reuse and planting, so as to solve the problem that the traditional planting roof construction method proposed in the above background technology often ignores the collection and utilization of rainwater, resulting in waste of rainwater resources.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a green roof construction method integrating rainwater collection, purification, reuse and planting, including roof base treatment, coating composite waterproofing engineering, rainwater collection system installation, rainwater purification system installation, planting layer construction, irrigation system design and rainwater reuse system installation steps; including the following steps: Step 1: Roof base treatment. The roof adopts an inclined design and is equipped with a rainwater collection trough. A filter is installed in the rainwater collection trough to initially filter impurities in the rainwater. A water storage tank is installed under the rainwater collection trough to store the collected rainwater. Step 2: Coating composite waterproofing project; Step 3: Rainwater collection system installation; Step 4: Rainwater purification system installation. The water storage tank is equipped with a purification device, including a sedimentation tank, a filter and a disinfector. The sedimentation tank is used to remove suspended matter in the rainwater; the filter uses materials such as activated carbon to further remove harmful substances in the rainwater; the disinfector uses ultraviolet disinfection or ozone disinfection to kill bacteria, viruses and other microorganisms in the rainwater; Step 5: Planting layer construction; Step 6: Irrigation system design. There is a planting area on the roof. There are planting troughs in the planting area. The planting troughs are filled with nutrient soil. There is a waterproof and breathable layer above the planting troughs to prevent rainwater leakage and ensure the normal growth of plants. There is also an irrigation system in the planting area to use recycled rainwater for irrigation; Step 7: Installation steps of the rainwater reuse system. The purified rainwater is transported to water use points in the building through the reuse pipe, such as the bathroom, garden irrigation, etc. The reuse pipe is equipped with a valve to control the flow of the reused water.

[0005] Preferably, the floating slurry on the roof structure layer is cleaned with a dust removal grinder and a vacuum cleaner. The base layer should be flat and firm without peeling and flaking. After cleaning, it is sealed with epoxy coating and fiberglass mesh is laid (the coverage width on both sides of the seam is not less than 25 cm). This treatment method avoids the shortcomings of traditional local mortar leveling measures, such as high labor intensity, the need to wait for maintenance, and the risk of mortar layer falling off. Mechanical construction is used to effectively reduce labor intensity and improve the overall flatness quality. At the same time, after the base is sealed, asphalt caulking can effectively seal the structural layer and reduce leakage risks.

[0006] Preferably, after the construction of the roof insulation (thermal insulation) layer and the leveling layer is completed, when constructing the waterproof layer, the facade and nodes are coated first, and then the flat surface is coated, and the coating should be applied in layers and in turns in a strip-by-strip interval manner or in a sequential backward manner. Confirm that there are no defects such as bubbles, wrinkles, pits, and scratches on the coating surface. After scraping the non-curing rubber asphalt waterproof coating, roll the modified asphalt root-resistant puncture waterproof membrane and lay it in sequence along the direction of water flow to reduce the overlap of the short side of the membrane, ensure that the overlap of the membrane along the direction of water flow is not less than 100mm, and the overlap of the short side is staggered. Not less than 500mm, and then the concrete protective layer is constructed. Compared with the traditional single coating or waterproofing membrane, the composite waterproof layer of non-curing rubber asphalt coating and asphalt root penetration resistant waterproof membrane in this construction method can fully adhere to the base layer, seal the capillary pores and fine cracks, and can be well bonded to any material. Even on a damp base without obvious water, the bonding ability is not affected, and the waterproof reliability is more guaranteed. At the same time, the overall thickness and weight are lighter than a single waterproof layer, which effectively reduces the load on the green roof.

[0007] Preferably, the convex surface of the polymer protective drainage (storage) special-shaped sheet is covered with a filtration geotextile. The polymer protective drainage (storage) special-shaped sheet is made of high-density polyethylene and polypropylene pure white raw materials, which are extruded and molded in a molten state to form a membrane and shell connection, a protective drainage board with a three-dimensional drainage space and a certain supporting rigidity.

[0008] Preferably, the rainwater collection system is constructed by reasonably setting rainwater collection devices on the roof, such as rain gutters, rainwater pipes, etc., and utilizing the building slope (2%-3%) to ensure that rainwater can flow smoothly into the collection system. At the same time, through optimized design on the roof, a pebble layer is set at the rain outlet with a radius of 20-30cm to prevent debris from entering the collection system, and a 5mm-10cmm fence is set at the rain outlet, which together constitute the first rainwater purification system.

[0009] Preferably, rainwater purification treatment: the primary sedimentation tank and the secondary sedimentation tank are connected in sequence through 50-110mmpvc pipes for filtration and sedimentation to form a complete rainwater purification device, remove impurities and pollutants therein, make it meet the reuse standards, and then enter the rainwater storage tank. This step is the key link to ensure the safe and effective use of rainwater.

[0010] Preferably, rainwater sedimentation tanks, rainwater purification tanks, and water storage tanks should be inspected regularly, and the internal pipes and equipment should be checked to ensure their normal operation without blockage or damage. The silt and solid impurities deposited on the bottom should be removed, and the attachments on the tank wall should be removed using professional cleaning tools or equipment, such as sludge suction machines or scrapers, to ensure that the silt in the sedimentation tank is effectively removed. During the cleaning process, care should be taken to prevent sewage from splashing to avoid affecting the surrounding environment. The rainwater purification tank should be cleaned regularly, including replacing the filter media (such as activated carbon, etc.) to ensure its filtering effect. After cleaning, the purification tank should be disinfected to ensure water safety.

[0011] Preferably, a planting layer, including a soil layer, a plant layer, etc., is laid above the purified rainwater. By scientifically configuring the soil and plants, a good environment is provided for plant growth, while realizing the greening and beautification of the roof. In combination with the water demand characteristics of the planting layer, a reasonable irrigation system is designed, and purified rainwater is used for plant irrigation. At the same time, excess rainwater is introduced into a reuse system for other non-drinking water purposes, thereby maximizing the utilization of rainwater.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting up a rainwater collection device, effective collection of roof rainwater is achieved, avoiding the waste of rainwater resources; through purification treatment, the collected rainwater meets the reuse standard and can be used for non-drinking water purposes such as irrigation and flushing, thereby realizing the recycling of rainwater; the construction of planted roofs increases the green area of ​​the city, improves the urban microclimate, and enhances the quality of life of residents; by using purified rainwater for irrigation and reuse, the use of tap water is reduced, energy consumption is reduced, and the concept of green energy saving is met. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the construction method process of the present invention. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] See also Figure 1 The present invention provides a technical solution: a green roof construction method integrating rainwater collection, purification, reuse and planting, including roof base treatment, composite waterproofing engineering, rainwater collection system installation, rainwater purification system installation, planting layer construction, irrigation system design and rainwater reuse system installation steps; including the following steps: Step 1: Roof base treatment. The roof adopts an inclined design and is equipped with a rainwater collection trough. A filter is installed in the rainwater collection trough to initially filter impurities in the rainwater. A water storage tank is installed under the rainwater collection trough to store the collected rainwater. Step 2: Coating composite waterproofing project; Step 3: Rainwater collection system installation; Step 4: Rainwater purification system installation. The water storage tank is equipped with a purification device, including a sedimentation tank, a filter and a disinfector. The sedimentation tank is used to remove suspended matter in the rainwater; the filter uses materials such as activated carbon to further remove harmful substances in the rainwater; the disinfector uses ultraviolet disinfection or ozone disinfection to kill bacteria, viruses and other microorganisms in the rainwater; Step 5: Planting layer construction; Step 6: Irrigation system design. There is a planting area on the roof. There are planting troughs in the planting area. The planting troughs are filled with nutrient soil. There is a waterproof and breathable layer above the planting troughs to prevent rainwater leakage and ensure the normal growth of plants. There is also an irrigation system in the planting area to use recycled rainwater for irrigation; Step 7: Installation steps of the rainwater recycling system. The purified rainwater is transported to water points in the building through recycling pipes, such as toilets and garden irrigation. Valves are installed on the recycling pipes to control the flow of recycled water. Use dust removal grinder and vacuum cleaner to clean the floating slurry on the roof structure layer. The base layer should be flat and firm without peeling and shelling. After cleaning, use epoxy coating to seal it and lay glass fiber mesh (the covering width on both sides of the seam is not less than 25cm). This treatment method avoids the shortcomings of traditional local mortar leveling measures, such as high labor intensity, waiting for maintenance, and the risk of mortar layer falling off. Mechanical construction effectively reduces labor intensity and improves the overall flatness quality. At the same time, after the base is closed, asphalt caulking can effectively seal the structural layer and reduce leakage risks. The roof insulation (heat insulation) layer and leveling layer are completed. When constructing the waterproof layer, first apply the facade and nodes, then the plane, and apply in strips or in reverse order. The scraping should be layered. , apply in several passes, make sure that there are no bubbles, wrinkles, pits, scratches and other defects on the coating surface, after scraping the non-curing rubber asphalt waterproof coating, roll the modified asphalt root-penetration resistant waterproof membrane, and lay it in sequence along the direction of water flow, reduce the overlap of the short sides of the membrane, and ensure that the overlap of the membrane along the direction of water flow is not less than 100mm, and the overlap of the short sides is staggered by not less than 500mm, and then construct the concrete protective layer. Compared with the traditional single coating or membrane waterproofing, the composite waterproof layer of non-curing rubber asphalt coating and asphalt root-penetration resistant waterproof membrane in this construction method can fully adhere to the base layer, seal the pores and fine cracks, and can bond well with any material, even on a damp base layer without obvious water, the bonding ability is also not affected in terms of waterproof reliability. It is more guaranteed, and the overall thickness and weight are lighter than a single waterproof layer, which effectively reduces the load on the planting roof. It is composed of a convex surface of a polymer protective drainage (storage) special-shaped sheet covered with a filtration geotextile. The polymer protective drainage (storage) special-shaped sheet is made of high-density polyethylene and polypropylene pure white raw materials. It is extruded and molded in a molten state to form a membrane and shell connection with a three-dimensional drainage space and a certain supporting stiffness. The protective drainage board, rainwater collection system construction: Reasonable rainwater collection devices are set on the roof, such as rainwater hoppers, rainwater pipes, etc., and the building slope (2%-3%) is used to ensure that rainwater can flow smoothly into the collection system. At the same time, through optimized design on the roof, a pebble layer is set with a radius of 20-30cm at the rain outlet to prevent debris from entering the collection System, set 5mm-10cmm fence at the rain outlet, together forming the first rainwater purification system, rainwater purification treatment: through 50-110mmpvc pipes, the first sedimentation tank and the second sedimentation tank are filtered and precipitated in turn to form a complete rainwater purification device, remove impurities and pollutants, so that it meets the reuse standard, and then enters the rainwater storage tank. This step is to ensure the safe and effective use of rainwater. The key link is to regularly inspect the rainwater sedimentation tank, rainwater purification tank, and storage tank, check the internal pipes and equipment to ensure their normal operation without blockage or damage, remove the sediment and solid impurities deposited on the bottom, and remove the attachments on the pool wall. Use professional cleaning tools or equipment, such as a sludge suction machine or a scraper.To ensure that the sludge in the sedimentation tank is effectively removed, pay attention to prevent sewage from splashing during the cleaning process to avoid affecting the surrounding environment. The rainwater purification pool is cleaned regularly, including replacing the filter medium (such as activated carbon, etc.) to ensure its filtering effect. After cleaning, the purification pool is disinfected to ensure water quality safety. A planting layer is laid on top of the purified rainwater, including a soil layer, a plant layer, etc. Through the scientific configuration of soil and plants, a good environment is provided for plant growth, and the greening and beautification of the roof is achieved. Combined with the water demand characteristics of the planting layer, a reasonable irrigation system is designed to use purified rainwater for plant irrigation. At the same time, excess rainwater is introduced into the reuse system for other non-drinking water purposes to maximize the use of rainwater.

[0016] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A green roof construction method integrating rainwater collection, purification, reuse and planting, including roof base treatment, composite waterproofing engineering, rainwater collection system installation, rainwater purification system installation, planting layer construction, irrigation system design and rainwater reuse system installation steps; characterized in that: The steps include: Step 1: Roof base treatment. The roof adopts an inclined design and is equipped with a rainwater collection trough. A filter is installed in the rainwater collection trough to initially filter impurities in the rainwater. A water storage tank is installed under the rainwater collection trough to store the collected rainwater. Step 2: Coating composite waterproofing project; Step 3: Rainwater collection system installation; Step 4: Rainwater purification system installation. The water storage tank is equipped with a purification device, including a sedimentation tank, a filter and a disinfector. The sedimentation tank is used to remove suspended matter in the rainwater; the filter uses materials such as activated carbon to further remove harmful substances in the rainwater; the disinfector uses ultraviolet disinfection or ozone disinfection to kill bacteria, viruses and other microorganisms in the rainwater; Step 5: Construction of planting layer; Step 6: Irrigation system design. There is a planting area on the roof. There are planting troughs in the planting area. The planting troughs are filled with nutrient soil. There is a waterproof and breathable layer above the planting troughs to prevent rainwater leakage and ensure the normal growth of plants. There is also an irrigation system in the planting area to use recycled rainwater for irrigation; Step 7: Installation steps of the rainwater reuse system. The purified rainwater is transported to water use points in the building through the reuse pipe, such as the bathroom, garden irrigation, etc. The reuse pipe is equipped with a valve to control the flow of the reused water.

2. A green roof construction method integrating rainwater collection, purification, reuse and planting according to claim 1, characterized in that: Use a dust removal grinder and a vacuum cleaner to clean the floating slurry on the roof structure layer. The base layer should be flat and firm without peeling and shelling. After cleaning, it is sealed with epoxy coating and fiberglass mesh is laid. This treatment method avoids the traditional local mortar leveling measures, which have high labor intensity, need to wait for maintenance, and the risk of mortar layer falling off. The use of mechanical construction effectively reduces labor intensity and improves the overall flatness quality. At the same time, after the base is sealed, the asphalt caulking can effectively seal the structural layer and reduce the risk of leakage.

3. A green roof construction method integrating rainwater collection, purification, reuse and planting according to claim 2, characterized in that: After the construction of the roof insulation layer and leveling layer is completed, when constructing the waterproof layer, first apply the facade and nodes, then the flat surface, and apply it in layers and layers in a strip-by-strip interval manner or in a sequential backward manner. Make sure that there are no bubbles, wrinkles, pits, scratches and other defects on the coating surface. After scraping the non-curing rubber asphalt waterproof coating, roll the modified asphalt root-resistant puncture waterproof membrane and lay it in sequence along the direction of water flow to reduce the overlap of the short side of the membrane and ensure that the overlap of the membrane along the direction of water flow is not less than 100mm, and the overlap of the short side is staggered by not less than 5 00mm, and then the concrete protective layer is constructed. Compared with the traditional single coating or waterproofing membrane, the composite waterproof layer of non-curing rubber asphalt coating and asphalt root penetration resistant waterproof membrane in this construction method can fully adhere to the base layer, seal the capillary pores and fine cracks, and can be well bonded to any material. Even on a damp base layer without visible water, the bonding ability is not affected, and the waterproof reliability is more guaranteed. At the same time, the overall thickness and weight are lighter than a single waterproof layer, which effectively reduces the load on the green roof.

4. A green roof construction method integrating rainwater collection, purification, reuse and planting according to claim 3, characterized in that: It is composed of the raised surface of a polymer protective drainage shaped sheet covered with a filtration geotextile. The polymer protective drainage shaped sheet is made of pure white raw materials of high-density polyethylene and polypropylene. It is extruded and molded in a molten state to form a protective drainage board with a membrane and shell connection, a three-dimensional drainage space and a certain supporting rigidity.

5. A green roof construction method integrating rainwater collection, purification, reuse and planting according to claim 4, characterized in that: Construction of rainwater collection system: Rainwater collection devices, such as rain gutters and rainwater pipes, are reasonably set on the roof, and the building slope is used to ensure that rainwater can flow smoothly into the collection system. At the same time, through optimized design on the roof, a pebble layer with a radius of 20-30cm is set at the rain outlet to prevent debris from entering the collection system. A 5mm-10cmm fence is set at the rain outlet to form the first rainwater purification system.

6. A green roof construction method integrating rainwater collection, purification, reuse and planting according to claim 5, characterized in that: Rainwater purification: The primary sedimentation tank and the secondary sedimentation tank are connected in sequence through pipes to form a complete rainwater purification device to remove impurities and pollutants so that they meet the reuse standards and then enter the rainwater storage tank. This step is a key link to ensure the safe and effective use of rainwater.

7. A green roof construction method integrating rainwater collection, purification, reuse and planting according to claim 6, characterized in that: Regularly inspect rainwater sedimentation tanks, rainwater purification tanks, and water storage tanks, check the internal pipes and equipment to ensure their normal operation without blockage or damage, remove the sediment and solid impurities deposited on the bottom, and remove the attachments on the tank wall. Use professional cleaning tools or equipment to ensure that the silt in the sedimentation tank is effectively removed. During the cleaning process, pay attention to prevent sewage from splashing to avoid affecting the surrounding environment. Regularly clean the rainwater purification tank, including replacing the filter medium, to ensure its filtering effect. After cleaning, disinfect the purification tank to ensure water safety.

8. A green roof construction method integrating rainwater collection, purification, reuse and planting according to claim 7, characterized in that: A planting layer, including a soil layer, a plant layer, etc., is laid on top of the purified rainwater. Through scientific configuration of soil and plants, a good environment is provided for plant growth, while the greening and beautification of the roof is achieved. Combined with the water demand characteristics of the planting layer, a reasonable irrigation system is designed to use purified rainwater for plant irrigation. At the same time, excess rainwater is introduced into the reuse system for other non-drinking water purposes to maximize the use of rainwater.

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