聚合铝在发电厂水处理中的应用与研究

摘要

Polyaluminum chloride is widely used for water treatment in power plant. To find out the best service condition, pH value, temperature and dosage of raw water are changed. By measuring residual turbidity of wa-ter samples and UV254, coagulation effect is determined. The test shows that when pH value is 6 coagulation effect becomes optimal, he most appropriate dosage of polyaluminum chloride is 9 mg/L-1 and the most suitable water temperature for polyaluminum chloride coagulation is about 25 Celsius degrees. Compared with crys-talline aluminum chlorate, polyaluminum chloride coagulant is more effective and less dose-consuming.%聚合铝在发电厂水处理中的应用广泛。为寻找聚合铝的最佳使用条件，通过改变原水的pH值、温度及聚合铝的用量等来确定聚合铝使用的最佳条件，通过测量水样的剩余浊度和UV254确定混凝效果。试验表明：聚合铝在pH值为6左右时混凝效果最好且此时聚合铝的最佳投药量为9 mg•L-1左右，聚合铝混凝的最佳水温在25℃左右；聚合铝混凝剂与结晶氯化铝相比混凝效果更高，而且投药量更少。