复合型生物絮凝剂与聚合氯化铝铁复配处理高藻水

Combination of Compound Bio-flocculant and PAFC for Treatment of Algae-laden Water

首次采用复合型生物絮凝剂处理高浊、高藻水,分别考察了复合型生物絮凝剂、聚合氯化铝铁的投加量对去除浊度的影响,以及将复合型生物絮凝剂与聚合氯化铝铁复配后对浊度的去除效果。试验结果表明:对于经二氧化氯预氧化后的高藻水,在同等的投药量(25mg/L)下,复合型生物絮凝剂对浊度的去除率为89.1%,聚合氯化铝铁对浊度的去除率为60.5%,前者的除浊效果明显好于后者;将复合型生物絮凝剂与聚合氯化铝铁进行复配,在投药量分别为12.5mg/L和25mg/L时,对浊度的去除率为93.5%,除浊效果最好。

Compound bio-flocculant （CBF） was first used to treat high-turbidity and algae-laden water. The effects of dosages of CBF and PAFC on turbidity removal were studied, and the turbidity removal was investigated under the condition of combination of CBF and PAFC. The results show that for the algae-laden water preoxidated by chlorine dioxide, the removal rates of turbidity by CBF and PAFC are 89.1% and 60.5% respectively when the dosage is 25 mg/L each. The turbidity removal efficiency of the former is better than that of the later. Coagulation jar tests reveal that the combination of CBF and PAFC has a better effect on turbidity removal. When the dosages of CBF and PAFC are 12.5 mg/L and 25 mg/L respectively, the turbidity removal rate reaches 93.5%.