Water treatment method and device of directional self-repairing flat-plate ceramic membrane assembly

Abstract

The invention discloses a water treatment method of a directional self-repairing flat-plate ceramic membrane assembly. The water treatment method comprises the following steps: firstly, arranging nanocatalytic type titanium dioxide asymmetric separation membranes on the surfaces of flat-plate ceramic membranes; then assembling the flat-plate ceramic membranes to form a flat-plate ceramic membraneassembly; arranging a rotary hairbrush capable of randomly scrubbing the flat-plate ceramic membrane surfaces up and down between the flat-plate ceramic membranes in the flat-plate membrane assembly;arranging an ultraviolet generation device between the flat-plate ceramic membranes; adding ozone and H2O2 into a medium for backwashing. According to the water treatment method of the directional self-repairing flat-plate ceramic membrane assembly, microorganism bacteria and organic matters on the surfaces of the membranes can be directionally killed and decomposed and rapidly degraded, so thatmembrane pollution can be effectively reduced and the number of times of backwashing and the backwashing frequency are greatly reduced. The effective working time of equipment is greatly prolonged andthe water flux in unit time is greatly increased; the water flux is increased by 30 percent or above under the same condition. Organic matters, oil stain, bacteria and the like on the surfaces of themembranes are randomly and directionally decomposed in time and the surfaces of the membranes keep clean so that the filtering effect and the filtering efficiency are improved.

Description

technical field [0001] The invention relates to a complete set of sewage treatment equipment, in particular to a directional self-repair flat ceramic membrane module and a water treatment method thereof. Background technique [0002] As a new type of high-efficiency sewage treatment technology, ceramic flat membrane bioreactor has become an indispensable treatment technology in the treatment of domestic sewage, oily wastewater, industrial wastewater and extreme environmental wastewater (slaughter and breeding wastewater, etc.). [0003] As we all know, organic matter in wastewater is an important substance that causes eutrophication of water bodies and environmental pollution, causing algae and other microorganisms to multiply in water, causing dissolved oxygen in water to drop, fish to die in large numbers, and ecosystems to collapse. Ten times, organic matter is one of the important causes of pollution; flat ceramic membranes have become the core components of sewage treat...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of easy fouling and frequent cleaning of flat ceramic membrane modules in the prior art, resulting in low system operating efficiency and high operating costs, a device for mechanical scrubbing of membranes has appeared on the market, but it can only remove Inorganic particles can’t be removed from soft colloidal substances produced by organic matter. In addition, there are also experiments where nano-titanium dioxide is put into the membrane pool and ultraviolet rays are added to generate hydroxyl radicals. However, because nano-titanium dioxide particles are very small, it is easy to cause membrane pores to be blocked and easily lost.

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