斜管沉淀池处理净水厂排泥水工艺优化研究  

Optimization of sludge water process in waterworks by inclined-tube sedimentation tank

作　　者：宋宝强[1] 李荣光[2] 孙星凡[3] 刘红[2] 马名楠[2] 

机构地区：[1]天津通用水务有限公司,天津300381 [2]天津市自来水集团有限公司,天津300040 [3]北京桑德环保集团有限公司,北京101102

出　　处：《供水技术》2014年第6期43-45,49,共4页Water Technology

摘　　要：以净水厂排泥水为研究对象,考察了斜管沉淀池对排泥水的处理效果。结果表明,随着进泥负荷的不断增大,斜管沉淀池出水的上清液浊度和CODMn含量都逐渐升高,阴离子聚丙烯酰胺或聚合氯化铝与聚丙烯酰胺的联合投加都可以改善排泥水的沉降性能,且只要聚丙烯酰胺的投加量大于2 mg/L,就可以形成较大且密实的矾花;投加聚丙烯酰胺药剂后,可应对由于净水工艺进行沉淀池冲洗后排泥水性质的恶化,改善排泥水的沉降性能,降低出水浊度,提高出泥浓度。Taking sludge water in waterworks as research object,the treatment effect of sludge water was investigated by inclined-tube sedimentation tank. The results indicated that supernatant turbidity and CODMncontents of outflow were gradually increased with the increasing load into the sludge.The settling performance of sludge water could be improved by dosing anionic polyacrylamide（ PAM） or combination of PAM and PAC. The large and dense alum floc could be formed when the PAM dosage was more than 2 mg / L. After dosing PAM,the deterioration of sludge water could be resolved after cleaning sedimentation tank,settling performance of sludge water could be improved,outflow turbidity could be decreased and sludge concentration could be increased.

关 键 词：斜管沉淀池 排泥水 净水厂 聚丙烯酰胺 

分 类 号：X703[环境科学与工程—环境工程]