STUDIES ON PREPARATION AND TREATMENT MICROPOLLUTED RAW WATER OF A NEW TYPE COMPOSITE INORGANIC POLYMER COAGULANT——POLYALUMINUM SILICATE CHLORIDE(PSAC)

A series of polyaluminum silicate chlorides(PASC) with different basicities(B) was prepared by means of methods is to add NaOH into the mixed solution of AlCl₃·6H₂O and polysilicic acid under the same molar ratios of Al/Si, The coagulation efficiency of chloride (PASC) disposaled with micropolluted raw water (the water of qiu zhong lake) under different the plunge doses, the pH and the coagulate times; and the coagulation efficiency polyaluminum silicate chloride (PASC) compared with micropolluted raw water and the simulation dyeing waste water (mimicry). The experimental results showed that the effect of coagulant of the polyaluminum silicate chlorides (PASC) use in low concentration wastewater is better than use in high concentration wastewater (the simulation printing and dyeing waste water).