净水技术2024，Vol.43Issue(z2)：29-34,6.DOI:10.15890/j.cnki.jsjs.2024.s2.004
水厂排泥水固体通量及微砂增效絮凝沉淀试验
Experimental on Solid Flux and Microsand Enhanced Flocculation Precipitation of Sludge Discharged from a WTP
摘要
Abstract
Plenty of sludge water is discharged from the process of water purification in urban water treatment plant(WTP),which can not only affect the normal operation of water plant,but also pose a greater threat to the eco-environmental sanitation.In order to explore a cost-effective flocculation precipitation technology for sludge water treatment,the natural settling experiment was conducted by taking sludge water from the sedimentation tank in a WTP in Shanghai City to investigate the effect of microsand enhanced cationic polyacrylamide(CPAM)flocculation treatment on the precipitation performance of sludge water and its solid flux.The results indicated that the natural settling rate of low-concentration sludge water was large,with high static sedimentation solid flux,and then became small when it reached the pressure-tightening point,resulting in a significant change in the settling curve.As the concentration of sludge water increased,the natural settling rate decreased,with a large downstream discharge solid flux.The addition of CPAM alone had a limited effect on the settleability of high-concentration sludge water,while the addition of 60％microsand enhanced 1.0 mg CPAM/g flocculation treatment showed a good effect on the settlement of low/high-concentration sludge water,and produced a high total solid flux.The study result provides an important reference for the efficient flocculation treatment of sludge water in WTP.关键词
排泥水/阳离子型聚丙烯酰胺(CPAM)/絮凝沉淀/微砂增效/固体通量Key words
sludge water/cationic polyacrylamide(CPAM)/flocculation precipitation/microsand enhanced/solid flux分类
土木建筑引用本文复制引用
郭智刚,刘正雄,肖曦彬,吴振元,都正良,柴晓利..水厂排泥水固体通量及微砂增效絮凝沉淀试验[J].净水技术,2024,43(z2):29-34,6.基金项目
国家自然科学基金面上项目(51978495) （51978495）
