自来水厂生产废水处理及其意义.pdf

深圳市梅林水厂生产废水处理工程 ——沉淀池排泥水处理工程 摘要 给水厂生产废水的直接排放不仅造成受纳水体的淤积和污染，而且浪费大量的水资 源，为此国内外许多水厂开展了生产废水处理的实验研究和工程实践。深圳市梅林水厂生 产废水具有有机物含量高、沉降性能差、易发酵变质等特点，出来优为困难。 本文根据梅林水厂的水质特点，结合已有研究成果，对其处理方案进行了详细的技术 和经济论证，最终确定其处理方案为：沉淀池排泥水和滤池反冲洗水合并经水量调节池后， 由平流沉淀池进行泥水分离，上清液回收至原水厂配水井，沉淀底泥送至浓缩池进行浓缩， 浓缩污泥送入脱水机房进行压滤机脱水。浓缩池和脱水机房上清液送至调节池，再次进行 废水处理。 对处理方案的各个处理构筑物进行了详细的设计计算，主要包括水量调节池、回收水 沉淀池、污泥浓缩池、脱水间、加药间和回收水提升泵房，同时对各构筑物附属设备进行 了合理的选型。在此基础上进行了废水处理的平面布置和高程布置。 最后对回收水经济效益进行了分析，得出废水处理的成本费用为1.26元/吨。 关键词：生产废水 污泥浓缩 污泥调质 污泥脱水 废水处理 Wastewater Treatment project of Shenzhen Meilin water work ——Treatment project of Sedimentation pond wastewater ABSTRACT Wastewater discharged directly from water plant not only leads to clogging of received water-body, but also wasters vast amount of water resource. Engineering practice and experimental study on treatment and reuse of wastewater has been developed in many domestic and foreign water plants in order to protect environment and save water resource. For the particular geographical and climatic conditions, wastewater of water plant in Shenzhen city has such characteristics as high organic matter content, easily zymolytic and poor sediment ability and dewaterability. Traditional treatment process couldn’t fit for it. The article aims at the water quality of Meilin water plant. After argument of technique and economy, designs a treatment project. Precipitate pool arrange muddy water and strain pool back flush water is it regulate after the pool by water yield to amalgamate, by laminar flow precipitate pool last mud moisture from,on last well water works not fo