The use of polyaluminum chloride for liquid crystal waste water pretreatment process method The use of polyaluminum chloride for liquid crystal waste water pretreatment process that liquid crystal is a special nature and liquid crystal phase in the modern people often come into contact with the thin type of display Products are widely used. However, liquid crystal products in the production process will produce a large number of organic high concentrations of toxic waste water, such waste untreated emissions will cause serious damage to water and soil. As the liquid crystal products in the production process of monomer liquid crystal production wastewater is more difficult to deal with one of industrial wastewater. Therefore, the characteristics of liquid crystal wastewater were experimentally treated. It was found that the use of inorganic polymeric flocculant polyaluminum chloride for flocculation and sedimentation of liquid crystal wastewater has excellent turbidity removal effect. Liquid crystal wastewater flocculation in the use of polyaluminium chloride when the most conditions are: pH 6.0, dosing 20% ​​PAC, fully mixed with the waste, after standing for 40 minutes, the liquid crystal wastewater turbidity efficiency can be achieved 97 %the above. And after the pretreatment of the wastewater sample analysis, the treated water quality COD removal rate is up to 80%, for the subsequent anaerobic - aerobic treatment process to reduce the burden. This filter source water is original, for reprint, please indicate the source URL: http://www.gyzhenyu.com