冀翠香，王晓云，李卫平
（内蒙古科技大学能源与环境学院，内蒙古包头014010）
关键词：高密度沉淀池；钢铁废水；浊度；废水回用
中图分类号:TP242 文献标志码:A
摘要：为了减少钢厂新水取水量，降低吨钢耗水量，解决总排来水污染物种类多、成分复杂、难以处理等问题，对某钢厂总排污水处理中心进行改造，采用高密度沉淀池作为超滤膜组件的前处理，在运行过程中调整混凝剂投加量的多少、改变搅拌机转速和控制污泥的回流比，使其达到最佳运行工况。可有效降低水中浊度和有机物污染，减轻后续超滤膜组件的处理负担。
Research on Operation of High-densitySettler in Advanced Treatment System of All Drainage in Steel Plant
JICui-xiang,WANG Xiao-yun,LI Wei-ping*
（School of Energyand Environment, Inner Mongolia University of Science and technology, Baotou014010,Inner Mongolia Autonomous Region,P.R.China;）
Keywords:high-densitysettler; steel waste water; turbidity; waste water reuse
Abstract:The reformof the Sewage Treatment Center at a steel plant was proposed to reduce freshwater consumption and water consumption per ton of steel, and to solve thedifficult problem that the composition of all drainage was too complex causedby too many kinds of contaminants. The best operating condition was achieved byusing the High-density Settler as apretreatmentofultrafiltration membrane modulesystem, adjusting thedosing quantityofcoagulant,changing therotational speed ofmixer,and altering the control ofsludge return ratio. These measurescould not only decrease the turbidity, content of organics and otherpollutants, but also alleviate theprocessingloadof subsequentultrafiltration membrane module.