水厂低温低浊排泥水混凝处理工艺设计优化  

Design Optimization of Coagulation Treatment Process for Sludge Wastewater of Low Temperature and Low Turbidity in WTP

作　　者：姜继平 李玉立 王鹏 王宝玉 Jiang Jiping;Li Yuli;Wang Peng;Wang Baoyu(School of Environment Harbin Institute of Technology,Harbin 150090,China;School of Environmental Science and Engineering,Shenzhen 518055,China;Anhui Urban Construction Desi^^n Institute Co,Ltd,Hefei 230051,China)

机构地区：[1]哈尔滨工业大学环境学院,黑龙江哈尔滨150090 [2]南方科技大学环境科学与工程学院,广东深圳518055 [3]安徽省城建设计研究总院股份有限公司,安徽合肥230051

出　　处：《净水技术》2018年第8期61-65,共5页Water Purification Technology

基　　金：城市水资源与水环境国家重点实验室(哈尔滨工业大学)自主课题(2015DX03)

摘　　要：北方寒冷地区水厂排泥水常存在温度低、色度高和混凝浓缩效果差的问题,限制其有效回用。为实现哈尔滨磨盘山净水厂低温低浊期排泥水的回用,进行氧化钙与助凝剂A联用强化混凝试验。结果表明:氧化钙与助凝剂A联用效果最好,排泥水沉降1 h后,泥水界面的体积为78 m L,SV为29.62%;从污泥颗粒粒径分析可知,强化混凝后污泥平均粒径为61.99μm,粒径大于60μm的污泥占75%,与未经处理的排泥水相比(平均粒径为13.19μm,粒径大于60μm的污泥占不到5%)有明显的改善。此外,文中结合干泥量和排泥水量的计算,确定了排泥水处理系统的规模,并设计了工艺流程。Low temperature,high cclority and poor coagulation are the properties of sludge wastewater fromwaterworks in cold northern region which may restrict tlie effective reuse of sludge waste＇water. In order to achieve the reuse of sludge wastewater during low temperature and low turbidity period in Mopanshan WTP,enhancd coagulation experiments utilizing calcium oxide and coagulant aids were investigated. Results showed that tlie combination of calcium oxide witli aids A2 had the best coa1 h,the volume of interface between mud and water was 78 mL,and settling velocity （SV） was 29. 62%. Analysis of sludge particlesize showed that after enhanced coagulation,average diameter （ A） of sludge particle was 61. 99 $m,and sludge with particle sizegreater than 60 $m （ B） accounted for 75%. There was a significant improvement when compared with that of rawsludge （ A ‘ 13. 19 $m; B〈5%）. The capacity of sludge wastewater treatment system was determined in light of the volume of dried mud and sludge wastewater. The treatment process was designed as well.

关 键 词：低温低浊 排泥水回用 强化混凝 工艺设计 优化 水厂 

分 类 号：TU991.2[建筑科学—市政工程]