净水技术2016，Vol.35Issue(2)：64-70,7.
污泥深度脱水絮凝剂的筛选以及采用无机微粒作为助凝剂对污泥脱水性能的优化
Screening of Flocculants Used in Sludge Deep Dewatering and Optimization of Sludge Conditioning System Applied with Microparticles as Flocculant Aid
吴素花 1李平 1徐杰 1徐开熠 1肖兰1
作者信息
- 1. 凯米拉 上海 管理有限公司，上海 201112
- 折叠
摘要
Abstract
Capillary suction time (CST)value from CST testing and cake dryness from pressing testing were used to evaluate the dewatering performance of sludge after conditioning in the paper. Comparison was conducted among coagulant,two components (coagulant-flocculant)system and three components (coagulant-flocculant with the aid of inorganic microparticles). Results show that the optimal dosage range for linear ePAM is narrow. CST increases sharply if the linear ePAM is underdosing or overdosing. However, it is more tolerant to the overdosing of branched ePAM. Lower CST values of the sludge can be achieved with the aid of bentonite, silica or calcined hydrotalcite (CHT). Moisture content can reach 60% with the sludge conditioned with optimized FeCl 3 + ePAM conditioning system and FeCl3 + microparticle + ePAM system. Silica,out of all the tested microparticles,is the most significant in enhancing the sludge dewatering performance. The sludge flocs with the aid of silica are more resistant to shear forces and the cake dryness achieved is higher.关键词
脱水性能/膨润土/胶体硅/水滑石焙烧产物/碳酸钙/毛细吸水时间(CST)/泥饼干度Key words
dewaterability/bentonite/colloidal silica calcined MgAl-/hydrotalcite/calcium carbonate/CST/sludge cake dryness分类
建筑与水利引用本文复制引用
吴素花,李平,徐杰,徐开熠,肖兰..污泥深度脱水絮凝剂的筛选以及采用无机微粒作为助凝剂对污泥脱水性能的优化[J].净水技术,2016,35(2):64-70,7.
