Ceramic membrane aeration and micro-positive pressure ozone membrane regeneration water treatment method and treatment device

Abstract

The invention discloses a ceramic membrane aeration and micro-positive pressure ozone membrane regeneration water treatment method. Sewage after ozone micropore aeration treatment is conveyed into a membrane tank; when a membrane on a membrane module is blocked by microorganisms or organic matter, compressed air enters the membrane of the membrane module through a water outlet of the membrane module for high-pressure back flushing; contaminants attached to the surface of the membrane are separated from the surface of the membrane; after the back flushing of the compressed air, ozone is supplied to the membrane of the membrane module under critical micro-positive pressure; after a gel layer difficult to degrade on the surface of the membrane is decomposed and dissolved by using an ozone and air space, the compressed air is used for reverse purging of decomposed substances on the membrane to accomplish membrane flushing; a nano ceramic membrane with small pore size distribution, small transmembrane pressure and a very small pore size is used for aeration; the micro-positive pressure aeration is adopted to form many fine and uniform oxygen bubbles to make full use of an oxygen source; oxygen is better dissolved in water; a utilization rate of the oxygen is increased; a biochemical effect is enhanced; and the energy source waste is reduced.

Description

technical field [0001] The invention relates to a water treatment method and a water treatment device, in particular to a water treatment method and a treatment device for membrane regeneration by ceramic membrane aeration and critical micro positive pressure ozone. Background technique [0002] As a new type of high-efficiency sewage treatment technology, ceramic flat membrane bioreactor has become an indispensable treatment in the treatment of domestic sewage, industrial wastewater (especially wastewater containing aromatic hydrocarbons) and extreme environmental wastewater (such as slaughtering and breeding wastewater, etc.) technology. [0003] Flat ceramic membranes have become the core components of sewage treatment devices, and have achieved good results in practical applications. However, during the filtration operation of the system, because organic and inorganic substances are adsorbed on the surface of the membrane, especially bacteria and microbial metabolites a...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the flat ceramic membrane module in the prior art is easy to be fouled and frequently cleaned during the application process, the ozone utilization rate is too low and the system operation efficiency is reduced, and the operation cost is high.

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