结团絮凝工艺处理水厂排泥水的中试研究  

Pilot Study on Treatment of Waterworks Sludge Water Using Pellet Flocculation Process

作　　者：黄廷林[1] 郭宁[1] 何文杰[2] 李战朋[1] 汤建新[1] 张刚[1] 

机构地区：[1]西安建筑科技大学西部建筑科技国家重点实验室培育基地,陕西西安710055 [2]天津市自来水集团有限公司,天津300040

出　　处：《中国给水排水》2009年第5期41-44,共4页China Water & Wastewater

基　　金：天津市科技支撑计划重点项目(07ZCKFSH01300)

摘　　要：以水厂的铁盐排泥水为处理对象,采用结团絮凝工艺进行了规模为1.3～5.4 m3/h的动态试验研究,优化了处理工艺的控制条件。试验结果表明,采用静态混合器进行混合反应的处理效果优于其他混合装置;当进水SS为103～1 154 mg/L时,适宜的PAC、PAM[分子质量为(1～1.2)×104ku)]投加量分别为(5.1～15.3)、(0.3～2.7)mg/L,最佳搅拌转速为10 r/m in,水流上升流速为30～80 cm/m in。在该试验条件下,沉淀池出水浊度<5 NTU、污泥含水率<97%、污泥颗粒沉速>10 mm/s。A dynamic experimental study on waterworks sludge water with the capacity of 1.3 to 5.4 m^3/h was carried out by pellet flocculation process. The control conditions of treatment process were optimized. The results show that the static mixer has better treatment efficiency than other mixers. When the influent SS concentration is 103 to 1 154 mg/L, the proper dosages of PAC and PAM [ molecular weight of（ 1 - 1.2） × 10^4 ku] are 5.1 to 15.3 mg/L and 0.3 to 2.7 mg/L, the optimal rotating speed is 10 r/min and the water upflow velocity is 30 to 80 cm/min. Under above conditions, the effluent turbidity and the moisture content of sludge can be reduced to less than 5 NTU and below 97%, respectively. Moreover, the sludge settling velocity can exceed 10 mm/s.

关 键 词：排泥水 铁盐 结团絮凝 静态混合器 上升流速 

分 类 号：X703[环境科学与工程—环境工程]