摘要
采用以陶粒为填料的曝气生物滤池（BAF）处理生活污水，研究气水比、水力负荷、进水COD和NH3-N负荷对BAF去除COD及NH3-N的影响，分析COD及NH3-N沿滤柱的变化规律。结果表明：当试验进水COD及NH3-N质量浓度分别为300—370mg／L和20—40mg／L时，最佳气水比为4：1—5：1，最佳水力负荷为1．0—2．0m^3／（m^2·h）。当进水COD负荷为1．69—6．47kg／（m^3·d）时，COD去除率与进水COD负荷成正相关。BAF的硝化性能与进水NH3-N和COD负荷成负相关。
A biological aerated filter （BAF） with clay granular media was used for domestic wastewater treatment. The effects of gas to liquid ratio, hydraulic loading, and COD and NH3-N loading in influent on the COD and NH3-N removal rate of the BAF were analyzed, as well as the nile of COD and NH3-N variation along the length of the granular media. The results showed that when COD and NH3-N in influent were between 300 - 370mg/L and 20 - 40mg/L, respectively, the optimum gas to liquid ratio was between 4：1 - 5：1 and the optimum hydraulic loading was between 1.0 - 2.0m^3/（m^2·h）. When COD loading in influent was between 1.69 - 6.47 kg/（m^3·d）, the removal rate of COD was positively related to COD loading in influent. The amount of ammonia nitrogen nitrified by the BAF was negatively related to NH3- N and COD loading in influent.
出处
《水资源保护》
CAS
北大核心
2008年第2期76-78,81,共4页
Water Resources Protection
关键词
曝气生物滤池
生活污水
硝化
去除率
biological aerated filter
domestic wastewater
nitrification
removal rate
作者简介
徐颖（1957-），女，上海人，教授，主要从事环境化学及环境工程方面的研究工作。E-mail：xyhohai@163．com
