溶气气浮-炭砂过滤工艺处理低温低浊水质试验研究  

Treatment experiment of low temperature and low turbidity raw water by dissolved air flotation-carbon and sand filtering process

作　　者：王琳[1] 张克峰[1] 王永磊[1] 王安爽 贾伟建[1] 林绍霞 

机构地区：[1]山东建筑大学市政与环境工程学院,山东济南250101 [2]济南泉城水务有限公司,山东济南250000

出　　处：《供水技术》2014年第6期17-21,共5页Water Technology

摘　　要：采用溶气气浮-炭砂过滤工艺处理北方某原水水质,通过对工艺各项参数进行优化,优选聚合氯化铝铁为最佳混凝剂,其最佳投药量为5 mg/L(以Al3+计),气浮单元最优回流比为10%,适合炭砂滤柱的进水负荷为8 m3/(m2·h)。该工艺长期运行结果表明,在低温低浊进水条件下,溶气气浮-炭砂过滤工艺对浊度、CODMn、UV254、TOC的平均去除率分别达到99%,60%,55%和45%,出水水质可达到《生活饮用水卫生标准》(GB 5749—2006)中的限值要求。The dissolved air flotation-carbon and sand filtering process was adopted to treat raw water in Northern China. When the polyaluminum ferric chloride（ PAFC） as optimum coagulant was selected,the optimal dosage was 5 mg / L（ calculated as Al^3 ＋）,the optimal reflux ratio of air flotation unit was 10% and suitable inflow loading of carbon and sand filter column was 8 m^3/（ m^2·h）. In the long period,the operational results of this process indicated that the average removal rates of turbidity,CODMn,UV254 and TOC could obtain 99%,60%,55% and 45% by dissolved air flotation-carbon and sand filtering process under the condition of low temperature and low turbidity,and the outflow water quality could satisfy the requirements of Standards for Drinking Water Quality（ GB 5749—2006）.

关 键 词：低温低浊水 溶气气浮 炭砂过滤 

分 类 号：TU991.2[建筑科学—市政工程]