活性炭吸附用于城市污水地下回灌技术的研究  

An Experimental Study on Activated Carbon Adsorption Used in Groundwater Recharge with Municipal Wastewater

作　　者：皮运正[1] 吴天宝[1] 

机构地区：[1]清华大学核能技术设计研究院,北京100084

出　　处：《中国给水排水》1999年第10期5-8,共4页China Water & Wastewater

基　　金：九五"国家科技攻关课题;中德政府间合作项目

摘　　要：通过静态吸附试验比较与Ｃｒｉｔｔｅｎｄｅｎ 计算模型分析，选择ＧＨ—１６ 型粒状活性炭对北京高碑店污水处理厂二级出水进行深度处理试验。结果表明：ＧＨ—１６ 型活性炭的净化效果存在阈值，约２５ ％ 的ＤＯＣ不能被吸附，不被吸附的主要是分子量＞ ３ ０００ ｕ 的有机物。对以ＵＶ２５４ 表征的有机物去除效果最好，分子量＜ １ ０００ ｕ 的弱极性有机物易被微孔吸附且吸附容量大，对以ＡＯＸ表征的极性有机物去除效果较差。二级出水经活性炭深度处理，出水的可生化性提高。活性炭柱可运行４ ０００ 床体积，吸附容量为２５ ｍｇＤＯＣ／ｇ 活性炭。Using the secondary effluent from Gaobeidian Wastewater Treatment Plant, different kinds of granular activated carbon ( GAC)were studied for advanced treatment of the effluent. Results of adsorption isotherrn test and Crittenden model analysis showed : GH - 16 granular activated carbon had the best adsoption efficiency of organic substances characterized by the UV absorbance at 254 nm . The weak - polar organic compounds with molecular weight less than 1 000 u were easily removed and the adsorption capacity was large . On the contrary , those with molecular weight more than 3 000 u were difficult to remove . The effluent from secondary setting tank became more amenable to biological degradation after activaied carbon filtration . GAC bed could run for 4 000 bed volume and the adsorption capacity was 25 mgDOC/g carbon.

关 键 词：粒状活性炭 城市污水 地下回灌 Crittenden模型 

分 类 号：X799.03[环境科学与工程—环境工程]