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Treatment of painting wastewater

The source of coating and painting waste water is mainly the waste water generated in the coating process of its articles. During the painting process, water flow is used to absorb the residual paint mist, which usually contains benzene, resin, solvent, phosphorus, curing agent, etc., which will volatilize pungent odor for a long time, and the COD is tens of thousands, so it can not be discharged at all. With the increase of painting amount, it shows that the water body is more seriously polluted by organic matter, Paint waste water must be treated to separate organics from the water

In the treatment process of coating and painting wastewater, the types of oily paint are more common. The oily paint wastewater is characterized by stickiness, so we should select a paint mist coagulant with good viscosity breaking performance in product selection, which can adsorb, break stickiness, neutralize charge and other effects on the paint mist, impurities or suspended particles in the paint wastewater of the paint booth, and damage the stability of colloids or particles. When the overspray paint mist falls into the circulating water, Due to the penetration, wetting and dispersion of surfactants, paint mist particles are rapidly dispersed into small particles.