CN111990236A - Water-retaining and water-cleaning green roof system based on solar automatic irrigation - Google Patents

Water-retaining and water-cleaning green roof system based on solar automatic irrigation Download PDF

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Publication number
CN111990236A
CN111990236A CN202010815863.XA CN202010815863A CN111990236A CN 111990236 A CN111990236 A CN 111990236A CN 202010815863 A CN202010815863 A CN 202010815863A CN 111990236 A CN111990236 A CN 111990236A
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CN
China
Prior art keywords
water
green roof
drip irrigation
irrigation
artificial matrix
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Pending
Application number
CN202010815863.XA
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Chinese (zh)
Inventor
刘瑞芬
陈璇
叶建军
刘德富
冯晶红
刘瑛
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Hubei University of Technology
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Hubei University of Technology
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Filing date
Publication date
Application filed by Hubei University of Technology filed Critical Hubei University of Technology
Priority to CN202010815863.XA priority Critical patent/CN111990236A/en
Publication of CN111990236A publication Critical patent/CN111990236A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G31/00Soilless cultivation, e.g. hydroponics
    • A01G31/02Special apparatus therefor
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/10Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
    • A01G24/12Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing soil minerals
    • A01G24/15Calcined rock, e.g. perlite, vermiculite or clay aggregates
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/20Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D24/00Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/02Methods or installations for obtaining or collecting drinking water or tap water from rain-water
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/10Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
    • E04D13/04Roof drainage; Drainage fittings in flat roofs, balconies or the like
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
    • E04D13/04Roof drainage; Drainage fittings in flat roofs, balconies or the like
    • E04D13/064Gutters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/108Rainwater harvesting
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/20Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
    • Y02P60/21Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures

Abstract

The invention discloses a solar energy automatic irrigation type water-retention and water-cleaning green roof system, which comprises a solar energy power storage and supply assembly, a light green roof, an automatic drip irrigation assembly and a water storage tank, wherein the light green roof is sequentially provided with a plastic drainage plate, geotextile, an artificial matrix and sedum lineare from the upper part of a building roof, the artificial matrix is formed by mixing perlite and organic chicken manure, the water storage tank is arranged in a top-layer staircase in the building body and is used for receiving rainwater discharged from the light green roof, and the water storage tank is provided with an overflow port; the solar energy storage and power supply assembly comprises a solar panel, a charging controller and a storage battery; the automatic drip irrigation assembly comprises a drip irrigation pipeline, a moisture detector, a water pump and a drip irrigation controller, wherein the drip irrigation controller controls the water pump to be started or stopped according to the moisture content in the artificial matrix, so that the aim of automatic drip irrigation is fulfilled. The invention improves the interception rate of the green roof in the rainy period, reduces the risk of non-point source pollution, enhances the survival of plants on the green roof in the dry period and ensures the ecological environmental benefit of the green roof.

Description

Water-retaining and water-cleaning green roof system based on solar automatic irrigation
Technical Field
The invention belongs to the field of buildings, relates to a roof greening, intelligent irrigation and energy-saving water purification technology, and particularly relates to a solar automatic irrigation type water-retaining and water-cleaning green roof system.
Background
A green roof may be defined simply as "vegetation cover placed over an artificial building". The early green roof is mainly constructed to meet the aesthetic requirements of people, and the modern green roof has both simple aesthetic functions and environmental benefits. Modern green roofs are constructed by consciously laying a plurality of structural layers under plants and planting substrates to form a complete structure. Most green roofs have similar structures and are in direct contact with the roof panels, and the construction layers from the roof panels to the top are as follows: waterproof layer, drainage blanket, filter layer, planting matrix layer and plant.
The construction of the green roof reasonably utilizes the upper space of the city, beautifies the building environment of the city, and can bring numerous ecological environmental benefits to the city, such as relieving the urban heat island effect, promoting the building to cool and save energy, controlling and utilizing urban rainfall flood, reducing noise and air pollution, enriching the variety of the city and the like. At present, under the background of vigorously advocating the construction of sponge cities in China, as a main engineering measure for controlling the source of urban rainfall flood, green roofs are popularized and applied more and more in various places.
Although the green roof has high rainwater interception rate even does not produce flow for the small rainfall events with high occurrence frequency, the green roof has poor effect on the large rainfall events with low occurrence frequency. The reason is that the rainwater storage capacity of the green roof is effective, and excessive rainfall runoff still leaves the roof to cause pressure on an urban pipe network system; for green roofs with high-nutrient planting substrates, the problem of leaching of nutrient substances can be caused, and the roof rainwater runoff flowing to an urban pipe network system brings non-point source pollution. In addition, the survival of plants on the green roof is an important guarantee that the green roof can play a role in various ecological environmental benefits (such as interception and transpiration of rainwater runoff, cooling and humidification, carbon fixation and release and the like), and particularly in northern arid regions or southern high-temperature cities, when extreme weather events such as drought and water shortage cannot be avoided, irrigation on the green roof is very necessary to maintain the survival of the plants.
Disclosure of Invention
The invention aims to provide a solar automatic irrigation type water-retaining and water-cleaning green roof system, which is used for solving the problems of water resource loss, non-point source pollution and plant survival under extreme weather conditions in the conventional green roof in response to a heavy rainfall event, and the green roof can better exert various ecological functions in cities.
The purpose of the invention is realized as follows:
the utility model provides a green roof system of clean water of guarantor's water based on automatic formula of irrigating of solar energy which characterized in that: the solar energy drip irrigation system comprises a solar energy storage and power supply assembly, a light green roof, an automatic drip irrigation assembly and a water storage tank, wherein the light green roof is sequentially provided with a plastic drainage plate, geotextile, an artificial matrix and sedum lineare which is planted in the artificial matrix in a cutting mode from the upper part of a building roof, the artificial matrix is formed by mixing perlite and organic chicken manure in a fixed proportion, and the geotextile plays a role in filtering and is used for effectively intercepting the loss of fine particles and nutrient substances in the artificial matrix; the plastic drainage plate collects and drains seepage water flowing out from the bottom of the artificial matrix in time;
a drainage channel is arranged on the building roof on one side of the light green roof, drainage gravels are filled in the drainage channel, the plastic drainage plate is connected with the drainage channel, and one end of the drainage channel is connected with the water storage tank through a plastic drainage pipe;
the water storage tank is arranged in a staircase of the building body, the installation height of the water storage tank is lower than that of a top roof of the building body, rainwater is convenient to collect and store, an overflow port is further formed in the water storage tank, and the overflow port is connected to a water outlet of a municipal drainage pipe through an overflow pipe;
the solar energy storage and power supply assembly comprises a solar panel, a charging controller and a storage battery, wherein the solar panel is arranged on a building roof on the side of the light green roof and used for energy conversion, electric energy converted by the solar panel is stored in the storage battery through the charging controller, and the storage battery provides electric power for the water-retaining and water-cleaning green roof system;
the automatic drip irrigation assembly comprises a drip irrigation pipeline, a moisture detector, a water pump and a drip irrigation controller, wherein an inlet of the water pump is connected with the bottom in a water storage tank through a pipeline, an outlet of the water pump is connected with the drip irrigation pipeline through a pipeline, the drip irrigation pipeline is embedded at the bottom of an artificial matrix and is positioned on geotextile, the moisture detector is embedded in the artificial matrix and is used for detecting moisture in the artificial matrix, a detection signal of the moisture detector is transmitted to the drip irrigation controller, and the drip irrigation controller controls the water pump to start and stop according to the moisture content in the artificial matrix to achieve the purpose of automatic drip irrigation.
Furthermore, the particle size of the perlite in the artificial substrate is classified into 4mm-8mm, and the organic chicken manure is prepared by fermenting and drying at high temperature, and the organic matter content is about 50-70 g/kg. The artificial substrate prepared by mixing perlite and organic chicken manure in a volume ratio of 90:10 has an organic matter content of less than 50g/kg, an alkaline hydrolysis nitrogen content of less than 150mg/kg and a quick-acting phosphorus content of less than 350mg/kg, and can supply enough nutrients to plants and reduce the possibility of leaching of nutrient substances.
Further, the artificial matrix has a dry density of less than 0.5g/cm3
Further, the porosity of the artificial matrix is greater than 85%.
Furthermore, the maximum water holding capacity of the artificial substrate is more than 35%, so that rainwater can be effectively blocked, the survival rate of plants in a drought period can be improved, the permeability is more than 0.8cm/s, and the generation of roof water accumulation in a heavy rainfall event can be avoided.
Further, the solar energy power storage and supply assembly further comprises a circuit board, the storage battery is connected with the input end of the circuit board through a lead, and the output end of the circuit board is connected to each electric device of the automatic drip irrigation assembly through a lead.
Furthermore, the drip irrigation pipeline is a mesh pipe network formed by connecting an irrigation main pipe and irrigation branch pipes, and a large number of irrigation holes are formed in the irrigation branch pipes.
The invention has the beneficial effects that:
the sedum lineare has strong adaptability and certain ornamental value, and the prepared artificial matrix layer has excellent physical and chemical characteristics, so that the rainfall interception function of a green roof can be effectively exerted, and the non-point source pollution caused by roof rainwater runoff can be well reduced. The artificial substrate adopts limited (volume ratio is 10%) organic fertilizer, and the possibility of leaching of nutrient substances in the green roof production process can be effectively reduced. In addition, the geotextile of the polypropylene refined non-woven fabric is selected to filter and purify water quality, so that the pollution risk of green roof non-point source can be further reduced. The drainage of rainfall runoff on the green roof is undertaken by drainage gravels and a plastic drainage pipe. The water detector is placed in the middle of the artificial matrix layer, the humidity degree of the water of the artificial matrix can be detected, the water is fed back to the drip irrigation controller when the water of the artificial matrix is lower than the wilting coefficient, the water pump controller and the water pump are started from this, the water in the water storage tank is led to the artificial matrix layer through the main irrigation pipe, the branch irrigation pipes and the irrigation holes, irrigation is carried out, and the survival of plants in the drought period is guaranteed. When the water content of the artificial matrix reaches the field water capacity, the water content is fed back to the drip irrigation controller again, the water pump controller and the water pump are closed, and the irrigation is stopped.
By adopting the technical scheme of the invention, the rainwater interception rate of the green roof in response to a heavy rainfall event can be improved, the non-point source pollution risk caused by leaching of nutrient substances of the planting matrix can be reduced, meanwhile, the irrigation problem of plants in drought and water shortage can be solved by utilizing the solar energy resources of the roof, the green roof can be effectively ensured to play various ecological environment functions, and the construction of sponge cities and green energy-saving environment-friendly cities can be assisted.
Drawings
FIG. 1 is a schematic plan view of the overall water retaining and cleaning green roof system of the present invention;
FIG. 2 is a schematic view of a water storage tank with overflow function;
FIG. 3 is a schematic view of a green roof elevation;
fig. 4 is a schematic plan view of an automated drip irrigation assembly;
FIG. 5 is a schematic diagram of the connection between the solar storage and power supply module and the electrical devices.
In the figure: 1-staircase, 2-drainage gravel, 3-light green roof, 4-solar panel, 5-roof drainage port, 10-water storage tank, 11-overflow pipe, 12-water pump, 21-plastic drainage pipe, 31-sedum lineare, 32-artificial substrate, 33-geotextile, 34-plastic drainage plate, 35-water detector, 36-irrigation main pipe, 37-irrigation branch pipe, 38-irrigation hole, 40-drip irrigation controller and 41-water pump controller.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a solar energy automatic irrigation formula keeps water clean water green roof system, holds power supply unit, has purification performance's light green roof 3, automatic drip irrigation subassembly and has overflow function's water storage tank 10 including solar energy.
The solar energy storage and power supply assembly comprises a solar panel 4, a charging controller, a storage battery, a circuit board and the like. Solar panel 4 places in green roof side, and charge controller, battery, circuit board are put in building internal top layer stairwell 1, are convenient for maintain the management. Solar panel 4 shines through sunshine and produces the electric energy, links to each other with the battery through charge controller, and the top of battery is fixed and is connected the circuit board input, and the circuit board output links to each other with the consumer on the green roof, like moisture detector 35, water pump controller 41, water pump 12 etc..
The light green roof 3 having a purifying function is constructed as follows: the plastic drainage plate 34, the geotextile 33, the artificial matrix 32 and the sedum lineare 31 are arranged above the building roof in sequence. The sedum lineare 31 is planted in the artificial substrate 32 in a cuttage way, and the row spacing is 30 multiplied by 30 cm; the thickness of the artificial substrate 32 is 5-15cm, the artificial substrate is prepared by mixing perlite and organic chicken manure by a volume ratio of 90% to 10%, the perlite is 4mm-8mm in size classification on the market, the organic chicken manure is prepared by high-temperature fermentation and drying, the organic matter content is about 60g/kg, and the organic chicken manure can be purchased in the flower and tree market. The artificial matrix 32 thus mixed has excellent physicochemical properties, such as a dry density of only 0.207g/cm3The problem of overweight load during construction of green roofs can be effectively avoided, the porosity is as high as 91.4%, gas exchange of plant roots is facilitated, normal growth of plants is guaranteed, the maximum water holding capacity can reach 36.65%, rainwater can be effectively blocked, the survival rate of plants in a drought period can be improved, the roof ponding generation under a strong rainfall event can be avoided due to the permeability of 0.899cm/s, meanwhile, the contents of organic matters, alkaline-decomposed nitrogen, quick-acting phosphorus and the like in the artificial substrate 32 are only 31.2g/kg, 124.8mg/kg and 307.2mg/kg, sufficient nutrients can be supplied to the plants, and the possibility of leaching of nutrient substances can be reduced.
The artificial substrate 32 is formed by mixing lightweight aggregate and organic fertilizer in a volume ratio of 90:10, the geotextile 33 is made of polypropylene refined non-woven fabric, loss of fine particles and nutrient substances in the artificial substrate 32 can be effectively prevented, and the artificial substrate 32 and the geotextile 33 can be used for reducing the content of suspended solids, chemical oxygen demand, nitrogen and phosphorus and the like in effluent seepage water of a green roof and achieving the effect of purifying water quality. The plastic drainage plate 34 has high compressive strength, light load and easy installation, and can collect and discharge the seepage water flowing out from the bottom of the artificial matrix 32 in time. One side of the green roof is provided with a drainage channel, the end of the channel is provided with a small hole, and the channel is connected with a plastic drainage pipe 21 to collect and transport runoff on the green roof.
The automatic drip irrigation assembly comprises a drip irrigation pipeline (comprising a main pipe and branch pipes), a moisture detector 35, a water pump 12, a drip irrigation controller and the like. The drip irrigation pipeline is laid at the bottom of the green roof artificial substrate 32 and on the geotextile 33; the water detector 35 is placed in the middle of the 32 layers of the green roof artificial substrate and is connected with the output end of the circuit board of the solar energy power storage and supply assembly through a lead, the water pump 12 and the drip irrigation controller are also connected with the output end of the circuit board through leads, the drip irrigation controller is fixed around the circuit board, the water pump 12 is installed above the water storage tank 10 and in the staircase 1 at the top layer in the building body, and water is pumped out from the water storage tank 10 and supplied to a drip irrigation pipeline. The moisture detector 35 monitors moisture information of the green roof artificial substrate 32, and when the moisture is lower than the wilting coefficient, the moisture information is fed back to the drip irrigation controller, so that the drip irrigation controller is triggered to start the water pump 12, water is supplied to a drip irrigation pipeline, the artificial substrate 32 is irrigated, and survival of plants in a dry period is guaranteed; when the moisture detector 35 detects that the moisture of the artificial substrate 32 is higher than the field moisture capacity, the moisture is fed back to the drip irrigation controller again, then the water pump controller 41 and the water pump 12 are turned off, and water supply to the drip irrigation pipeline is stopped.
Water storage tank 10 is placed and is put at internal top layer stairwell 1 of building, is located water pump 12 below, and the mounting height (bottom height) of water storage tank 10 is less than the building roof, is convenient for receive the drainage on light green roof 3, and water inlet and delivery port are seted up at water storage tank 10 top, and the overflow mouth is seted up at upper portion side top, and the overflow mouth highly is higher than the roof at building top, the drainage of being convenient for. The water inlet is connected with a plastic drain pipe 21 for collecting rainfall runoff on the green roof, and the water outlet is connected with the inlet of the water pump 12 through a water pipe inserted at the bottom. The overflow port is connected with a water outlet of a municipal drainage pipeline roof in the building body through a plastic overflow pipe 11, so that the water in the water storage tank 10 can not overflow into a corridor under the condition of extreme rainfall. The unnecessary rainfall runoff that green roof can not absorb completely when water storage tank 10 will be rainstorm is collected, exceeds that water storage tank 10 volumetric water will flow out through its top overflow mouth, is connected to the roofing outlet 5 at building body top through overflow pipe 11, flows into municipal drainage pipe system. The outlet of the water pump 12 at the top of the water storage tank 10 is connected with the main irrigation pipe 36, so that the plants on the green roof are irrigated when needing water, the survival of the plants is guaranteed, and the green roof can continuously exert the ecological environmental benefits. The minimum volume of the water storage tank 10 can be calculated from the relevant characteristics of the green roof substrate 32 being constructed. The calculation formula is that the minimum volume of the water storage tank 10 is equal to the artificial substrate 32 field water capacity multiplied by the artificial substrate thickness, and meanwhile, the placeable space of the top stair room 1 in the building body is considered not to be exceeded.
The drainage of rainfall runoff on the green roof is carried by the drainage gravel 2 and the plastic drainage pipe 21. The moisture detector 35 is placed in the middle of the 32 layers of artificial substrates, the moisture dryness and wetness degree of the artificial substrates 32 can be detected, when the moisture content of the artificial substrates 32 is lower than the wilting coefficient, the moisture dryness and wetness degree is fed back to the drip irrigation controller, the water pump 12 is started through the water pump controller 41, the water in the water storage tank 10 is led to the 32 layers of the artificial substrates through the main irrigation pipe 36, the branch irrigation pipes 37 and the irrigation holes 38 for irrigation, and the survival of plants in the dry period is ensured. When the moisture of the artificial substrate 32 reaches the field moisture capacity, the moisture is fed back to the drip irrigation controller again, the water pump 12 is turned off through the water pump controller 41, and the irrigation is stopped. The green roof is flanked by solar panels 4, as shown in fig. 3.
On the bottom of the artificial substrate 32 and on the upper part of the geotextile 33, an irrigation main pipe 36 and an irrigation branch pipe 37 are arranged, irrigation water finally flows out from an irrigation hole 38 to wet the artificial substrate 32, and the plane layout of the automatic drip irrigation assembly is shown in fig. 4. The moisture detector 35 is connected to the output end of the circuit board disposed on the top stairwell 1 in the building, and the water pump controller 41 and the water pump 12 are also connected to the output end of the circuit board, as shown in fig. 4.
The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims (7)

1. The utility model provides a green roof system of clean water of guarantor's water based on automatic formula of irrigating of solar energy which characterized in that: the solar energy drip irrigation system comprises a solar energy storage and power supply assembly, a light green roof, an automatic drip irrigation assembly and a water storage tank, wherein the light green roof is sequentially provided with a plastic drainage plate, geotextile, an artificial matrix and sedum lineare which is planted in the artificial matrix in a cutting mode from the upper part of a building roof, the artificial matrix is formed by mixing perlite and organic chicken manure in a fixed proportion, and the geotextile plays a role in filtering and is used for effectively intercepting the loss of fine particles and nutrient substances in the artificial matrix; the plastic drainage plate collects and drains seepage water flowing out from the bottom of the artificial matrix in time;
a drainage channel is arranged on the building roof on one side of the light green roof, drainage gravels are filled in the drainage channel, the plastic drainage plate is connected with the drainage channel, and one end of the drainage channel is connected with the water storage tank through a plastic drainage pipe;
the water storage tank is arranged in a staircase of the building body, the installation height of the water storage tank is lower than that of a top roof of the building body, rainwater is convenient to collect and store, an overflow port is further formed in the water storage tank, and the overflow port is connected to a water outlet of a municipal drainage pipe through an overflow pipe;
the solar energy storage and power supply assembly comprises a solar panel, a charging controller and a storage battery, wherein the solar panel is arranged on a building roof on the side of the light green roof and used for energy conversion, electric energy converted by the solar panel is stored in the storage battery through the charging controller, and the storage battery provides electric power for the water-retaining and water-cleaning green roof system;
the automatic drip irrigation assembly comprises a drip irrigation pipeline, a moisture detector, a water pump and a drip irrigation controller, wherein an inlet of the water pump is connected with the bottom in a water storage tank through a pipeline, an outlet of the water pump is connected with the drip irrigation pipeline through a pipeline, the drip irrigation pipeline is embedded at the bottom of an artificial matrix and is positioned on geotextile, the moisture detector is embedded in the artificial matrix and is used for detecting moisture in the artificial matrix, a detection signal of the moisture detector is transmitted to the drip irrigation controller, and the drip irrigation controller controls the water pump to start and stop according to the moisture content in the artificial matrix to achieve the purpose of automatic drip irrigation.
2. The solar-based automatic irrigation water-retaining and water-cleaning green roof system as claimed in claim 1, wherein: the particle size of the perlite in the artificial matrix is classified into 4mm-8mm, the organic chicken manure is prepared by fermenting and drying at high temperature, the organic matter content is about 50-70g/kg, the organic matter content in the artificial matrix prepared by mixing the perlite and the organic chicken manure according to the volume ratio of 90:10 is lower than 50g/kg, the alkaline hydrolysis nitrogen content is lower than 150mg/kg, and the quick-acting phosphorus content is lower than 350mg/kg, so that the perlite artificial matrix can provide enough nutrients for plants and reduce the possibility of leaching of nutrient substances.
3. The solar-based automatic irrigation type water-retaining and water-cleaning green roof system as claimed in claim 1 or 2, wherein: the artificial matrix has a dry density of less than 0.5g/cm3
4. The solar-based automatic irrigation type water-retaining and water-cleaning green roof system as claimed in claim 1 or 2, wherein: the porosity of the artificial matrix is greater than 85%.
5. The solar-based automatic irrigation type water-retaining and water-cleaning green roof system as claimed in claim 1 or 2, wherein: the maximum water holding capacity of the artificial substrate is more than 35%, so that rainwater can be effectively retained, the survival rate of plants in a dry period can be improved, the permeability is more than 0.8cm/s, and roof water accumulation in a heavy rainfall event can be avoided.
6. The solar-based automatic irrigation type water-retaining and water-cleaning green roof system as claimed in claim 1 or 2, wherein: the solar energy power storage and supply assembly further comprises a circuit board, the storage battery is connected with the input end of the circuit board through a lead, and the output end of the circuit board is connected to each electric device of the automatic drip irrigation assembly through a lead.
7. The solar-based automatic irrigation type water-retaining and water-cleaning green roof system as claimed in claim 1 or 2, wherein: the drip irrigation pipeline is a mesh pipe network formed by connecting an irrigation main pipe and irrigation branch pipes, and a large number of irrigation holes are formed in the irrigation branch pipes.
CN202010815863.XA 2020-08-14 2020-08-14 Water-retaining and water-cleaning green roof system based on solar automatic irrigation Pending CN111990236A (en)

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CN202010815863.XA CN111990236A (en) 2020-08-14 2020-08-14 Water-retaining and water-cleaning green roof system based on solar automatic irrigation

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Application Number Priority Date Filing Date Title
CN202010815863.XA CN111990236A (en) 2020-08-14 2020-08-14 Water-retaining and water-cleaning green roof system based on solar automatic irrigation

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Cited By (2)

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CN113982201A (en) * 2021-10-14 2022-01-28 河海大学 Green roof design system of habitat based on rainwater purification and utilization

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