膜法处理低温低浊水技术综述

Review of Water Treatment for Low Temperature and Low Turbidity by Using Membrane Technology

低温低浊水的处理是给水处理的一个难点。分析了常规混凝方法难处理低温低浊水的原因,介绍和比较了膜处理低温低浊水的4种方法。研究结果表明,膜法出水水质好、稳定,采用低压膜直接过滤降低能耗,节省药剂投加费用;混凝—超滤工艺中加入粉末活性炭后可增加溶解性有机物的去除,膜生物反应器能有效去除氨氮。膜法处理低温低浊水对浊度和有机物的去除明显好于传统工艺,能提供水质良好的饮用水,是低温低浊水处理的发展方向。

The treatment of low temperature and low turbidity water was a difficult problem in feed water treatment. In this paper, the reasons for the diffieulty in the treatment of the low temperature and low turbidity water using conventional eongulation methods was analyzed,four membrane proeessing methods to low temperature and low turbidity water were introduced and compared. Many researches indicated that membrane technology had the highquality and stabling effluent,direct filtration using low- pressure membrane could reduce energy consumption and save coagulants dosing cost, adding powder activated carbon in the coagulation - ultrafiltation technology could increase the removal of dissolve organics, membrane bioreaetor also could remove mmnonia nitrogen effectively. It was shown that membrane technology was obviously better than conventional processing methods in reducing organics and turbidity and could provide highquality drinking water, which was the future developing direction for the treatment of low temperature and low turbidity water.