学术
华北地区微污染水的气浮和沉淀工艺处理
刘善培[1] 王启山[1] 樊雪红[1] 耿天甲[1] 韩宏大[2] 吴立波[1]
[1]南开大学环境科学与工程学院,天津300071 [2]天津市自来水集团有限公司,天津300040
摘 要:
通过对天津某水厂的中试试验，研究了气浮（DAF）和沉淀工艺对浊度、UV254、CODMa、TOC、THMFP、藻类的去除效果的影响，确定了适合华北地区典型水质的处理工艺。试验规模为5m^3／h。针对华北地区容易出现的夏季高温高藻、冬季低温低浊现象，分别对两种水质进行了混凝气浮和混凝沉淀试验，发现低温低浊期混凝气浮工艺对浊度的去除率比沉淀工艺平均高25％，而在其他时期只高出8．4％；高藻期气浮工艺对藻类的去除率平均比沉淀工艺高9．5％；有机物的去除规律在各个时期基本一致，气浮工艺对有机物的去除率比沉淀工艺平均高5％；气浮工艺对浊度、有机物、藻类的去除率分别为97％、40％、94％。中试试验证明气浮工艺适合对华北地区微污染水源水的处理，出水效果好于沉淀工艺。[著者文摘]
文章出处:
《吉林大学学报：工学版》-2008年38卷1期 -245-248页
文献标识码:
A
文章编号:
1671-5497（2008）01-0245-04
Treatment of micro-organic polluted water by DAF and sedimentation process
Liu Shan-pei, Wang Qi-shan, Fan Xue-hong, Geng Tian-jia,Han Hong-da, Wu Li-bo （1. College of Environment Science and Engineering, Nankai University, Tianjin 300071, China; 2. Tianjin Water Works Group Ltd. , Tianjin 300040, China）
Abstract:
The turbidity, UV254, CODMn, TOC, THMFP and algal removals efficiency were studied by dissolved air flotation （DAF） and sedimentation process in a water treatment plant （WTP） of Tianjin, China. By the experiment, the suitable process to treat the typical north China source water and the rules of pollutants removal were determined. A pilot model with a capacity of 5 cubic meters per hour was constructed. During the treatment of the low temperature and low turbidity source water, the turbidity removal by DAF process was 25% higher than that by sedimentation process, and 8. 4% higher in other periods. During the treatment of high temperature and algal bloom source water, the algal removal by DAF process was 9.5 % higher than that by sedimentation process. The removal rule for organic mater was almost same in all periods, which was 5% higher by DAF process than that by sedimentation process. The removal for turbidity, organic matter, and algae can reach 97%, 40% and 94% respectively. DAF process adapts to treat the micro-organic pollutants water in north China, and the treatment efficiency was better than sedimentation process.[著者文摘]
Key words:
environment engineering; water treatment; dissolved air flotation process; sedimentation process; micro-organic pollution; low temperature low turbidity; algae
基金资助:
“863”国家高技术研究发展计划项目（2002AA601140）.
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