Hollow flat ceramic membrane MBR reaction tank and membrane cleaning method thereof

Abstract

The invention relates to the technical field of sewage treatment, and provides a hollow flat ceramic membrane MBR reaction tank and a membrane cleaning method thereof. The hollow flat ceramic membraneMBR reaction tank comprises a reaction tank, which is internally provided with a hollow flat ceramic membrane, wherein a permeation liquid storage tank communicated with the internal flow channel ofthe hollow flat ceramic membrane is arranged outside the reaction tank, a water distribution pipe is arranged below the hollow flat ceramic membrane, the water flow outlet of the water distribution pipe points to the surface of the hollow flat ceramic membrane, a submersible pump connected with the water distribution pipe is arranged in the reaction tank, and an ozone generation device is furtherarranged outside the reaction tank, and is communicated with the internal flow channel of the hollow flat ceramic membrane. According to the invention, organic combination of physical cleaning and chemical cleaning, and surface sweeping cleaning and internal backwashing is realized, degradation and damage of dirt can be realized through ozone in a backwashing solution, separation of dirt and a membrane material can be promoted through the disturbance effect of water flow, and the efficient recovery of the filtering performance of the hollow flat ceramic membrane can be realized in a short time.

Description

Technical field [0001] The invention belongs to the technical field of sewage treatment, and particularly relates to a hollow flat ceramic membrane MBR reaction tank and a membrane cleaning method thereof. Background technique [0002] Flat ceramic membrane with a hollow structure is a new type of membrane material in recent years. The current hollow flat ceramic membranes mainly include microfiltration membranes and ultrafiltration membranes. Compared with traditional organic polymer membrane materials, hollow flat ceramic membranes With stronger anti-pollution ability, thermal stability and chemical stability, it has been used in drinking water treatment, municipal sewage treatment, industrial wastewater treatment and seawater desalination pretreatment. Although the hollow flat ceramic membrane has stronger anti-fouling ability compared with traditional organic polymer membrane materials, it cannot completely avoid the occurrence of membrane fouling after all. The occurrence o...

AI Technical Summary

Problems solved by technology

The currently reported implementation of chemical cleaning mainly uses chemical agents to soak and clean the membrane components, which makes the cleaning time longer and usually takes several hours to complete

In addition, in order to avoid water pollution caused by the chemical reagents used, it is usually necessary to take out the membrane module for ex-situ cleaning, which further increases the complexity of membrane cleaning

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