强化水旋澄清池技术处理黄河浊度水的试验研究 - 环境工程学报.docVIP

强化水旋澄清池技术处理黄河高浊度水的试验研究 李德生 程国栋 （中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室, 兰州 730000；中国科学院研究生院，北京 100049） 摘要: 由于兰州段夏季黄河水的浊度较高，直接影响了自来水厂的正常运行，而目前水厂所用工艺无法满足高浊度水的处理要求，因此，本文采用笔者自主研究开发的具有特殊结构的水旋澄清池对黄河高浊度水进行了强化处理的试验研究。研究结果表明：在多点投药混合方式下，强化水旋澄清池可提高浊度的处理效果；若在投加无机絮凝剂PAC后，再投加有机絮凝剂PAM 进行复配作用，不仅可降低无机絮凝剂的用量，节约制水成本，而且提高了自来水厂的出水水质；结果也表明该水旋澄清池技术能够推广应用于黄河高浊度水的强化处理工艺中。 关键词: 黄河高浊度水；强化水旋澄清池；试验研究；处理效果 中图分类号： 　　文献标识码　A　　文章编号： Experimental study on the treatment of high turbidity water in the Yellow River by the technology of the enhanced swirling clarifier Li Desheng , Cheng Guodong (State Key Laboratory of Frozen Soil Engineering, Institute of CAREE, CAS, Lanzhou 730000, China；Graduate University of CAS，Beijing 100049) Abstract High turbidity in the Yellow River in the summer has an adverse effect on Water Plants in Lanzhou. For the turbidity of water treated by the present techniques on Water Plants cannot satisfy stated standards, an experimental study is performed on removal efficiency and mechanism of turbidity in the Yellow River through enhanced swirling clarifier with special structures developed by ourselves in this paper. The result shows that the removal efficiency of turbidity increase by mixing reagent at many throwing spots through the swirling clarifier. Not only the reagent and product costs decrease, but also the removal efficiency of effluent turbidity in Water Plants creases after mixing polyaluminium chloride (PAC) and polyacrylamide (PAM) according to the sequence of first throwing PAC. It also shows that the technique of he swirling clarifier can be widely used in the enhanced treatment techniques to treat high turbidity water in the Yellow River. Keywords High turbidity water in the Yellow River; Enhanced swirling clarifier; Experimental study; Removal efficiency 基金项目：甘肃省攻关课题（02B17-13），该项目曾获2006年甘肃省科技进步二等奖 收稿日期： ；修订日期： 作者简介：李德生（1965－），男，博士研究生，教授，研究方向为水处理理论与技术。 *通讯联系人, E-mail: lidesheng@mail.lzjtu.cn 黄河是世界上著名的多泥沙河流，平均每年输沙量多达16亿吨；平均含沙量为353。黄河泥沙主要来自中游黄土高原地区。[1]，高浊度主