给水厂排泥水处理回用的若干问题

Some Issues about the Recycling Liquid Sludge Water from Water Treatment Plant

给水厂的排泥水来自于水厂的沉淀池、澄清池排泥水或滤池反冲洗废水,对其进行处理利用是节约水资源、减少水污染的有效措施。从排泥水的生物、物理和化学特性上分析了在其处理利用时可能存在的问题,指出对排泥水进行混凝沉淀预处理或采用膜过滤后再回用,可提高水厂出水的微生物安全性;还介绍了国内外排泥水处理利用的现状。

The liquid sludge water is produced from coagulation/filtration units and filtration operation of water treatment plant. The utilization of liquid sludge water from water treatment plant is an efficient way to save water resource. The potential problems in recycling the liquid sludge water are discussed in this paper from the aspects of its biological, physical and chemical properties. The microbiological safety of filtered water can be improved by recycling the liquid sludge water after coagulation and sedimentation or membrane filtration pretreatment. The status of utilization of the liquid sludge water at home and abroad is presented as well.