Water-based paint production wastewater post-treatment process

Abstract

The invention relates to a water-based paint production wastewater post-treatment process, which comprises a bottom plate, a filtering device, a liquid inlet pipe and a liquid discharge pipe; the filtering device is mounted in the middle of the upper end of the bottom plate, the liquid inlet pipe is mounted at the lower end of the left side of the filtering device, and the liquid discharge pipe ismounted at the lower end of the right side of the filtering device. The invention solves the following technical problems that in existing equipment, the biological membrane sheet cannot be effectively adsorbed and tightened and is usually in a loose state during cleaning of coating wastewater, and the biological membrane sheet is not enough protected and is liable to be damaged, and meanwhile, when existing equipment is used for purifying coating wastewater, impurities adhered to the surface of the biological membrane sheet cannot be effectively and quickly cleaned, so that the impurities are easily accumulated on the surface of the biological membrane sheet, and the purification efficiency of the biological membrane sheet is influenced..

Description

technical field [0001] The invention relates to the field of water-based paint wastewater treatment, in particular to a post-treatment process for water-based paint production wastewater. Background technique [0002] Coatings, including oil (based) paint, water-based paint, powder coating. Usually, the paint is mainly made of resin, or oil, or emulsion, and various pigments, fillers, and corresponding additives are added as needed, and it is prepared with organic solvents or water. The paint industry wastewater is resin, varnish, paint and other paints in the production. The wastewater discharged during the process, the paint wastewater has roughly two sources. One is that in the production process, the production of paint mostly involves resin synthesis, and uses a variety of chemical raw materials such as organic solvents and additives. It also contains a large amount of thickener Various polymeric organic compounds of additives and dispersants, so the discharge of indus...

AI Technical Summary

Problems solved by technology

[0005] The present invention can solve the problem that the existing equipment cannot effectively absorb and tighten the biofilm when purifying the paint wastewater, and the biofilm is usually in a loose state, and cannot effectively protect the biofilm. It is easy to cause damage to the biofilm, and at the same time, when the existing equipment purifies the paint wastewater, it cannot effectively quickly clean up the impurities adhered to the surface of the biofilm, resulting in the accumulation of impurities on the surface of the biofilm, which affects the biological Difficulties such as the purification efficiency of the membrane

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