净水技术Issue(3)：65-68,4.
溶解氧突变指数对活性污泥重金属中毒的预警
Early Warning of Heavy Metal Poisoning of Activated Sludge Indicated with Dissolved Oxygen Mutation Index
摘要
Abstract
The early warning of activated sludge poisoned by heavy metals as Cu2+,Cr6+,Pb2+and As5+ was studied with dissolved oxygen mutation index. The parameters of early warning of activated sludge poisoning were optimized. With a certain condition and common dosage of heavy metals (15 mg/L),the dissolved oxygen mutation by these heavy metals are 0. 87,0. 6,0. 4 and 0. 75 mg/L,which indicates the biological inhibition order is Cu2+ >As5+ >Cr6+ >Pb2+. When concentrations of As5+and Cr6+ increase from 3 mg/L to 15 mg/L,the dissolved oxygen mutations increase from 0. 32,0. 27 mg/L up to 0. 75 and 0. 53 mg/L,respectively. With a rising dosage of heavy metals,the activated sludge ’s poison measured by dissolved oxygen mutation index is enhanced. Thus,the dissolved oxygen mutation index can be used as early warning of the activated sludge poisoned by heavy metals in wastewater treatment plant.关键词
溶解氧突变/重金属/活性污泥中毒/生物抑制/预警Key words
dissolved oxygen mutation/heavy metal/activated sludge poisoning/biological inhibition/early warning分类
建筑与水利引用本文复制引用
陈亚松,杜郁,杨广文,赵文玉,陈振国..溶解氧突变指数对活性污泥重金属中毒的预警[J].净水技术,2014,(3):65-68,4.基金项目
国家水体污染控制与治理科技重大专项课题（14ZX07305001）；北京建工集团重点攻关项目 （）
