Technological water discharge and recycling device for tap water plant

Abstract

The invention provides a technological water discharge and recycling device for a tap water plant. The technological water discharge and recycling device for the tap water plant comprises a micro-filtering system, an ultra-filtering system and an automatic cleaning system, wherein the micro-filtering system comprises a raw water tank, a first electromagnetic valve, a micro-filtering component and a second electromagnetic valve; the ultra-filtering system comprises an ultra-filtering component, a third electromagnetic valve, a fourth electromagnetic valve, a water producing pump, a fifth electromagnetic valve and a clean water tank; and the automatic cleaning system comprises a backwashing water pump. The device disclosed by the invention can be used for solving the problem of 'cryptosporidium and Giardia cysts' in the tap water plant effectively, so that the quality of treated water reaches the sanitary standard requirement of domestic drinking water, and the recovery rate can reach more than 95%. The device disclosed by the invention has the advantages of high quality and stability of discharged water, small occupied area, intensive structures, simple construction operation, high anti-pollution capacity, convenience in installation and transportation, high automation degree and the like, and has good popularization and application prospects.

Description

technical field [0001] The invention belongs to the technical field of water treatment equipment, and in particular relates to equipment for recovering wastewater from tap water works. Background technique [0002] The process drainage of urban water supply plants generally includes filter backwash water and sludge discharge water, accounting for about 6-10% of the raw water. This part of the wastewater has high turbidity, high concentration of inorganic ions and organic pollutants, and is easy to stay and breed a large number of harmful bacteria. , Microorganisms, "two worms" (Cryptosporidium, Giardia) problem is particularly serious. Direct discharge not only wastes water resources, but also pollutes the environment. [0003] At present, there are two main ways to treat process wastewater in China: first, direct return to raw water, which usually increases the load of raw water treatment, resulting in higher water treatment costs; second, discharge after treatment. Conve...

AI Technical Summary

Problems solved by technology

Ultrafiltration technology is a safe and effective way to remove "two insects", but membrane fouling is the bottleneck restricting the application and development of ultrafiltration membranes in sewage treatment processes

Membrane fouling will reduce the water production of the membrane, increase the energy consumption of the operation, and affect the stable operation of the membrane and shorten the service life of the membrane

[0005] The existing recycling process usually has problems such as unstable water quality (difficult to meet the bacteriological index), high operating load, many structures, complicated process, and long construction period.

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