生物强化活性滤池除污效能研究及炭型比较  

Experimental Study on the Pollutants Removal by Biologically- enhanced Active Filter and Comparison Between the Two Types of Activated Carbon

作　　者：李璇 刘武平 

机构地区：[1]江苏省苏核辐射科技有限责任公司,江苏南京210019 [2]中国市政工程西南设计研究总院有限公司,四川成都610081

出　　处：《污染防治技术》2015年第6期12-16,共5页Pollution Control Technology

摘　　要：近年来,长江流域主要饮用水源地都有水质恶化的趋势,且随着有机物浓度的增加,水源水逐渐呈现微污染特征。文中以长江南京段原水为研究对象,考察了生物强化滤池不同空床接触时间(EBCT)对滤池效能影响,确定10 min为最佳EBCT。在EBCT为10 min,气水联合反冲的最佳工况条件下,球状炭强化滤池对浊度、NH3-N、NO-2-N、CODMn、UV254、BDOC的去除率分别为97%、86%、96%、27%、12%、70%。基于两种炭型试验结果区别不大,水厂可以根据实际情况,选择球状炭或者柱状炭进行常规滤池的改造。In recent years,the quality of raw water in the Yangtze River is facing the deterioration of water quality and the increase of organics concentrations,which showed micro- polluted raw water characteristic. In this paper,the performance and mechanism of biologically- enhanced active filter（ BEAF） were studied under different empty bed contact time（ EBCT）. The results showed that the optimal operating mode for BEAF was to set the EBCT for ten minutes. Under the optimal operating mode（ EBCT =10 mins,air combining with water for backwashing） for the BEAF with spherical carbon,the removal rates of turbidity,NH3- N,NO-2- N,CODMn,UV254,BDOC were 97%,86%,96%,27%,12% and 70. 1% respectively. With the slight difference between spherical and columnar carbon,water plant could use either of them to transform conventional filter.

关 键 词：生物强化活性滤池 过滤 空床接触时间 活性碳 强化的常规水处理工艺 

分 类 号：X172[环境科学与工程—环境科学]