Recycling device for backwash water of activated carbon filter and recycling method

Abstract

The invention discloses a recycling device for backwash water of an activated carbon filter and a recycling method. The recycling device comprises a flocculant feeding tank, a backwash water collecting tank, an ultra-filtration membrane tank, an ozone generator and a clean water tank, wherein a backwash water inlet, a flocculant feeding port and a collecting tank water outlet are formed on the backwash water collecting tank; an ultra-filtration membrane component is arranged in the ultra-filtration membrane tank; an ultra-filtration membrane water outlet and an ultra-filtration membrane backwash water inlet are formed at the top of the ultra-filtration membrane component; the ultra-filtration membrane water outlet is connected with a water inlet of the clean water tank; a backwash water outlet is formed on the clean water tank; the backwash water outlet is connected with the ultra-filtration membrane backwash water inlet through a backwash pump; and an ozone aeration plate is arranged in the ultra-filtration membrane tank. The recycling device disclosed by the invention is capable of filtering out the microorganism, organic matter and particle matter in the backwash water of the activated carbon filter, realizing the safety utilization of the backwash water of the activated carbon filter, increasing the water-saving efficiency of water plant and efficiently restraining the ultra-filtration membrane pollution under the condition of low drug consumption.

Description

technical field [0001] The invention relates to the field of waste water treatment in water supply plants, in particular to an activated carbon filter backwash water recovery device and recovery method. Background technique [0002] As an important part of water saving in water supply enterprises and society, water saving in water plants, especially the reuse of sludge water, has become an inevitable trend in the development of water saving technology in the industry. According to the survey, less than 5% of the surface water plants in the country have production wastewater treatment facilities, that is, the production wastewater of most water plants is discharged directly without treatment, which is not only a serious waste, but also causes serious pollution to the receiving water body. [0003] In recent years, the advanced treatment process represented by ozone-biological activated carbon has been gradually promoted and applied throughout the country. The backwash water o...

AI Technical Summary

Problems solved by technology

According to the survey, less than 5% of the national surface water plants have production wastewater treatment facilities, that is, the production wastewater of most water plants is discharged directly without treatment, which is not only a serious waste, but also causes serious pollution to the receiving water body

The reuse of backwash water mixed with raw water may lead to problems such as increased dissolved organic matter content in coagulation effluent and microbial leakage, which poses a certain risk to the safety of water supply in water plants

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