The characteristics electroplating sewage showed by polyacrylamide

Electroplating wastewater with polyacrylamide characteristics including flocculation, PAM can make suspended matter by charge neutralization and bridging adsorption, flocculation effect. Adhesion, by chemical mechanical, physical, role, bonding. The process of electroplating wastewater treatment filter: by the high zinc concentration wastewater of cold galvanizing unit discharge into the neutralization reaction tank, with industrial slaked lime as neutralizer, wastewater pH from 1 ~ 2 to 8.5 ~ 9, and then by the membrane liquid filter for solid-liquid separation, filtering the filtrate discharge, sludge send existing acid wastewater treatment sludge system.The Cationic Polyacrylamide,Anionic Polyacrylamide,Poly aluminium chloride are the several types of the polyacrylamide.
Device for treatment of waste water containing zinc plating is composed of four units:
1, first for neutralization reaction and solid-liquid separation unit.
2, the lime milk preparation and supply unit.
3, sludge treatment unit. The sludge collecting pond, mud pump etc.. Sludge concentrating and evacuation of filter press.
4, activated by hydrochloric acid cleaning unit. Consisting of hydrochloric acid tank and conveying pump.
Electroplating wastewater treatment by filter press release water treatment agent (polyacrylamide, poly aluminum chloride), in the use of aluminum salt, iron and other inorganic coagulant, flocculant in wastewater treatment systems, such as the need to deal with processing capacity of water over the clarifier or because it causes water floc to settlement and drift polyacrylamide coagulation, simply add the 0.1-0.2ppm, can significantly improve the sedimentation effect. Moreover, the treated water of COD and chroma indexes will be significantly improved. The idea is to use inorganic coagulants and flocculants and the goods are fit better. Various after the sludge concentration shall be used for dehydration drying polyacrylamide.

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