Building water supply pipeline circulation system and method for secondary water supply quality guarantee

Abstract

The invention discloses a building water supply pipeline circulation system and method for secondary water supply quality guarantee and belongs to the field of drinking water treatment. The system comprises a building water supply inlet pipe, a lifting or water storage device, a flow measurement or detection device, a backflow controller, a building water supply vertical pipe, a building indoor pipeline and faucet, a backflow pipe, an ultraviolet / titanium dioxide sterilizer, a backflow electromagnetic valve and a check valve. In the normal water consumption process, municipal water passes through the building water supply inlet pipe, the lifting or water storage device, the flow measurement or detection device and the building water supply vertical pipe to reach the building indoor pipeline or faucet. When the hydraulic retention time of tap water for secondary water supply reaches 2 h or above, water in the building water supply vertical pipe passes through the backflow pipe and the ultraviolet / titanium dioxide sterilizer to flow into the building water supply indoor pipe or the water storage device again, is mixed with fresh tap water and then is used by users again through a secondary water supply system, and therefore the biological safety and chemical safety of the tap water in the secondary water supply system are ensured.

Description

technical field [0001] The invention belongs to the technical field of drinking water treatment, and in particular relates to a building water supply pipeline circulation system and method for ensuring the water quality of secondary water supply. Background technique [0002] After the factory water from the waterworks enters the municipal pipe network system, the water quality will change to a certain extent during the transmission and distribution process. The longer the hydraulic retention time of tap water in the pipe network, the more obvious the decline in water quality. Qualified factory water still contains a variety of trace inorganic and organic compounds and other nutrients. Therefore, the longer the hydraulic retention time of the factory water in the municipal pipe network system, the more likely various physical and biochemical reactions will occur, which will affect the water quality of tap water. . A large number of monitoring results of relevant agencies sh...

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Problems solved by technology

[0007] In order to solve the problems of long hydraulic retention time, reduction of residual chlorine, and deterioration of water quality in the secondary water supply system of the building community at present, the present invention provides a building water supply pipeline circulation system for secondary water supply water quality assurance, so as to shorten the tap water supply time. The residence time in the secondary water supply system pipeline of the building area can effectively improve the biological safety of tap water

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