北京市第九自来水厂污泥脱水试验研究  

LABORATORY AND PILOT STUDIES ON SLUDGE DEWATERING IN THE NINTH BEIJING DRINKING WATER TREATMENT PLANT

作　　者：杨晓胤[1,2] 刘园园[2] 张伟军[2] 徐孝雅[3] 王东升[2] 段晋明[1] 郏耕耘 

机构地区：[1]西安建筑科技大学环境与市政工程学院,西安710055 [2]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085 [3]杭州兴源过滤科技股份有限公司,杭州311113

出　　处：《环境工程》2014年第1期20-24,共5页Environmental Engineering

基　　金：水体污染控制与治理科技重大专项"集成化给水污泥调质及深度脱水技术研究"(2012ZX07408001)

摘　　要：选择不同药剂对给水污泥进行化学调理,通过小试污泥比阻(SRF)初步确定出适宜于高压隔膜压滤过程的污泥调理方案,同时利用中试进行验证。旨在保证污泥高效脱水基础上实现脱滤液回用,以期为自来水厂污泥脱水工艺的选择提供建议。试验结果表明:采用氯化铁和PAC分别与石灰复配投加不仅可以将污泥含水率降至60%以下,同时能够控制脱水后污泥的绝干量。对于所有中试试验,脱水过程中的脱滤液浊度在绝大部分时间内小于0.2 NTU,能够达到回用要求。Several flocculants were selected to conduct sludge conditioning to find the feasible methods for sludge dewatering by using diaphragm filter press. The purpose is to achieve high performance in sludge dewatering and reuse the filtrate produced in dewatering process and provide useful information for design of sludge dewatering process in the drinking water treatment plants. The results indicated that combined use of PAC, ferric chloride and lime had better a performance than single addition and could effectively reduce the cake moisture to less than 60% and dry weight of sludge for disposal. For all pilot tests, turbidity of filtrate produced from dewatering was less than 0.2 NTU for most of time, thus filtrate could be reused as source water.

关 键 词：自来水厂污泥 无机混凝剂 污泥脱水 隔膜压滤 

分 类 号：X703[环境科学与工程—环境工程]