给水厂污泥减量化及性能改善研究

随着给水厂排泥水直排河道的方法不再可行,水处理过程中产生的污泥量和污泥性能将直接影响整个水厂的造价及运行费用。试验在水处理工艺流程相同的条件下,分别投加硫酸铝、氯化铁、聚铝(PAC)、聚铁(PFS)、聚铝铁(PAFC)、高效聚双酸铝铁(PAFCS)等不同混凝剂,以达到减少絮凝沉淀后排泥水的污泥量及改善排泥水的沉降和脱水性能的效果,并探讨了其作用机理。

Research on mass reduction and property improvement of sludge in waterworks

Now the way to discharge waterworks sludge directly into the natural rivers is invalid.The quantity and the density of settled solids from coagulation are the critical parameters for waterworks sludge treatment.In our approach,aluminum sulfate,poly-ferric sulfate,PAC,PFS,PAFC and PAFCS were used as coagulants in experiments and the parameter of specific resistance to filtration was measured to estimate the properties of solid settling and dewatering.The coagulation mechanism was discussed in the end.