A rainwater collection and reuse device for building vertical greening

Abstract

The invention discloses a rainwater collecting and reusing device for the vertical greening of a building. The invention includes a rainwater inlet stand pipe, a rainwater purifying ecological groove body, aself-using-water water tank and a rainwater collecting stand pipe, therainwater purifying ecological groove body and the self-using-water water tank which is close to a wall are combined side by side, the rainwater inlet stand pipe and the rainwater collecting stand pipe are arranged on two ends of the rainwater purifying ecological groove body respectively, the rainwater purifying ecological groove body is divided into a plurality of sections, aerobicnitrificationsections and anaerobicdenitrificationsections are arranged alternatively; the end section of the rainwater purifying ecological groove body is a chemical phosphorus removal filler module; the bottom, corresponding to the aerobicnitrification sections, of the self-using-water water tank is provided with reusing-water perforationdistribution pipes which are embedded in filler layers, and one-way valves are installed on the main pipes of the reusing-water perforationdistribution pipes. The device has the advantages that the device has the water-holding capacity, rainwater peak values and the amount of SS, COD and other contaminants are reduced, and the content of nitrogen and the content of phosphorusare controlled to reach standards, and the purposes are achieved that the water tank automatically supplements water to the device and the environmental greening is conducted.

Description

technical field [0001] The invention belongs to an environmental greening facility, in particular to a rainwater collection and reuse device for building vertical greening. Background technique [0002] Since the 1980s, with the acceleration of landscaping development, my country's green coverage has increased, and green related technologies have been constantly updated. With the process of urbanization, "garden city", "garden city" and "ecological city" have become the goals of domestic urban construction and promoted the development of urban greening. my country's first-tier cities such as Beijing, Shanghai, and Shenzhen play a leading role in my country's vertical greening, and cities across my country have successively carried out research and practical work on vertical greening construction. As people's understanding of the urban ecological environment continues to deepen, the importance of urban greening has become increasingly apparent, and vertical greening has grad...

AI Technical Summary

Problems solved by technology

The above three forms of vertical greening methods can only play the role of shielding the building, reducing noise, keeping dust, reducing light pollution, improving the environmental microclimate, and protecting the building surface.

However, these three forms all need to adopt relatively complicated pipeline water supply, and have little effect on the utilization of natural rainfall.

Chinese patent document CN 105821523 A discloses "a rainwater utilization structure for vertical greening on building walls". Although this technology can reduce the pressure caused by rainwater discharge on urban pipe networks, it can save and collect roof rainwater as a water supply source for vertical greening systems. The existing problems are: (1) The effluent through the vertical greening rainwater utilization structure cannot meet the urban greening standards of "Urban Sewage Recycling-Urban Miscellaneous Water Quality" (GB / T14190-2002) and "Technical Specifications for Building and Community Rainwater Utilization Engineering" "(GB50400-2006) the CODcr and SS indicators of rainwater after treatment

(2) A large sump is required to collect the filtered water of the planting tank and the submersible pump is used to supply the water for plants in various planting tanks, which does not make full use of the elevation advantage of natural rainwater and consumes energy

(3) It is only suitable for low-rise buildings. If it is used in high-rise buildings, there must be more water tanks and submersible pumps, inconvenient management and maintenance, high energy consumption, and loud noise when the sound insulation effect is not good.

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