Effluent problems: contains wood dust particles, toluene, xylene, ethyl acetate, acetone by chance, high viscosity of effluent, mainly yellow and colorless transparent, pungent odor.
Solution: Use polymeric aluminum chloride for decolorization and dispersion into small particles, and anionic polyacrylamide for flocculation and precipitation.
Treatment results: In the furniture factory spray paint wastewater treatment process is more common for the type of oil-based paint is a little more, the characteristics of oil-based paint wastewater is sticky, in the product selection of good polymeric aluminum chloride (PAC) and polyacrylamide agent (PAM), polymeric aluminum chloride role is to break the sticky, decomposition, can paint spray room paint wastewater in the paint mist, the PH to neutral, impurities or suspended particles for Adsorption, sticky-breaking, charge, etc., to destroy the stability of the colloid or particles, when the polymeric aluminum chloride (PAC) added to the circulating water, the penetration of surfactants, wetting and dispersing the role of paint particles quickly dispersed into fine particles. The role of polyacrylamide is to coalesce the paint slag to float or precipitate, the paint slag particles will be coalesced in large pieces, forming a larger paint slag flocculent material and float or settle, producing the effect of solid-liquid separation, the water quality quickly clear, the circulating water can be a long time without changing water. In the furniture factory painting wastewater treatment process, anionic polyacrylamide belongs to an essential water treatment agent in wastewater treatment, it can break the sticky paint slag outside for all types of spraying workshop circulating water system has a very good effect, both to solve environmental problems, but also to save water costs, the program is suitable for many paint spraying manufacturers, and water exchange and treatment costs are greatly reduced.
The first contact with polyacrylamide water curtain coating spray paint factory often encountered, advice: in the paint paint wastewater in the treatment process, according to the paint wastewater water quality, composition, PH value and the site treatment process to choose the type of pharmaceutical products, general spray paint wastewater treatment is divided into two kinds, one is oil-based wastewater, one is water-based paint wastewater, composition, concentration are different, according to the characteristics of paint wastewater to choose We have to choose the applicable chemicals according to the characteristics of paint wastewater, grasp the dosage accurately, and control the cost of use.
Paint mist coagulant in the spray paint wastewater treatment has two purposes, one is to assist production, that is, to maintain the function of circulating water constantly absorbed over the sewage treatment chemicals, and constantly separate the impurities in the water to avoid clogging of pipes, pumps, the second is to achieve environmental protection requirements, to avoid environmental pollution caused by the discharge of sewage.
