活性碳-石英砂双层滤池去除氨氮和亚硝酸盐氮的特性  

Characteristics of Ammonia Nitrogen and Nitrite Nitrogen Removal with GAC-Sand Dual Media Filter Processes

作　　者：丁卫 盛德洋 张晓健[2] 陈超[2] 冯硕[2] 杨至瑜[2] 杨蕊竹[3] 张建国 

机构地区：[1]东莞市东江水务有限公司,广东东莞523112 [2]清华大学环境学院,北京100084 [3]中国矿业大学,北京100083

出　　处：《净水技术》2012年第5期20-24,共5页Water Purification Technology

基　　金：水体污染控制与治理科技重大专项(2009ZX07423-003)

摘　　要：通过一个水文年的小试试验,研究了活性炭-石英砂双层滤池(简称炭砂滤池)作为快滤池时对水中氨氮和亚硝酸盐氮的去除特性。结果表明:炭砂滤池能稳定且有效去除水中的氨氮和亚硝酸盐氮,试验期间滤池出水氨氮浓度一般低于0.1 mg/L,出水NO2--N浓度一般低于检出限,运行效果优于水厂传统砂滤池。在试验进水水质条件下,氨氮和亚硝酸盐氮主要在滤池上部0.4 m活性炭层被去除。高滤速和水力波动会使炭砂滤池去除氨氮和亚硝酸盐氮的效果变差。水温和反冲洗对滤池去除氨氮和亚硝酸盐氮的效果影响不大,高温条件以及反冲洗后滤池对氨氮和亚硝酸盐氮的沿程去除速率略有提高。GAC-sand dual media filter was used as rapid filter during drinking water treatment. Ammonia nitrogen and nitrite nitrogen removal characteristics were studied. Three bench-scale GAC-sand filters were operated for a year, and the performance shows that GAC-Sand filters can remove ammonia nitrogen and nitrite nitrogen stably and effectively. Ammonia nitrogen is below 0.1 mg/L and nitrite nitrogen are not detected in the filter effluent for most of time, which is better than the sand filters in the drinking water treatment plant. Removal efficiency is decreased when filtration velocity increases. Temperature and backwashing have little impact on ammonia nitrogen and nitrite nitrogen removal, while the removal efficiency increases along the filter depth under higher temperatures or after baekwashing.

关 键 词：快滤池 滤速 水力波动 水温 反冲洗 

分 类 号：X5[环境科学与工程—环境工程]