Abstract:
Since the Pihe River is characterized by low temperature and low turbidity, poly-aluminium chloride(PAC) and poly-aluminium ferric chloride(PAFC) have been used for its treatment. By beaker experiments, the op-timal dosage and pH are ascertained. The results show that the coagulation treatment efficacy of PAFC is better than that of PAC, when the water temperature is comparatively low(<10 ℃). The optimal dosages of PAC and PAFC are 14.4 mg/L and 12.8 mg/L, respectively. The pH of water body has remarkable effect on coagulation treatment efficacy. When pH is less than 6.3, the treatment efficacies of both kinds of coagulants are not so good. The best pH is around 8.2 for PAC treatment, and the best pH in around 9 for PAFC treatment. In actual application, the treatment efficacy can be improved by way of adjusting pH.
Key words:
water with low temperature and low turbidity,
poly-aluminium chloride,
poly-aluminium ferric chloride
摘要：
针对低温低浊淠河水，分别选取聚合氯化铝（PAC）、聚合氯化铝铁（PAFC）作为混凝剂对其进行处理，通过烧杯实验，确定了最佳投加量和最佳pH范围。结果表明，在水温较低（<10 ℃）的情况下，PAFC的混凝处理效果优于PAC，PAC和PAFC的最佳投加量分别为14.4、12.8 mg/L。水体的pH对混凝处理效果影响显著，在pH<6.3时，2种混凝剂的处理效果都不是很好，PAC处理的最佳pH为8.2左右，PAFC处理的最佳pH为9左右。在实际应用中，可以通过调节pH来提高处理效果。
关键词:
低温低浊水,
聚合氯化铝,
聚合氯化铝铁
CLC Number:
Jia Rusheng, Gao Yulan, Yang Jie. Research on the contrast tests of different coagulants for treating Pihe River water with low temperature and low turbidity[J]. INDUSTRIAL WATER TREATMENT, 2014, 34(2): 40-42.
贾如升, 高玉兰, 杨杰. 不同混凝剂处理低温低浊的淠河水的对比实验研究[J]. 工业水处理, 2014, 34(2): 40-42.