复合型生物滤床修复城市景观水体的试验研究  

Experimental Study on Urban Landscape Water Remediation by Using Integrated Biofiltration Bed

作　　者：王凌云[1] 马放[1] 刘书宇[1] 从科明[1] 张颖[2] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090 [2]中国科学院沈阳应用生态研究所,辽宁沈阳110016

出　　处：《中国给水排水》2006年第7期9-12,共4页China Water & Wastewater

基　　金：国家重点基础研究发展计划(973)项目(2004CB418505)

摘　　要：采用天然沸石、炉渣、砂子为填料,构建了上向流—下向流复合型多层生物滤床,分别在静态和动态条件下研究了其对景观水体中氮、磷等营养盐的去除效果,并对其去除机理进行了分析。结果表明,在不同的循环周期下,通过物理吸附、化学结合、生物降解等过程,水体中的氮特别是氨氮得到了很好的去除,去除率达96.44%,出水氨氮稳定在0.5 mg/L以下;对磷的去除率为46.54%。微生物固定化过程以及动态流条件对水体中氮、磷的去除有明显的促进作用。Using natural zeolite, slag, and sand as fillers, an up-and-down flow integrated biofiltration bed was constructed. The research work focused on the effects and mechanism of nitrogen and phosphorus removal after a series of static and dynamic experiments. The result shows that the nitrogen element, especially ammonia nitrogen, can be removed efficiently by physical adsorption, chemical combination and biodegradation under the dynamic condition. The removal rates of nitrogen and phosphorus reache 96.44 % and 46.54% respectively. The effluent ammonia nitrogen concentration is under 0.5 mg/L for a long time. It can be affirmed that the process of microbial immobilization and dynamic condition can significantly improve the removal of nitrogen and phosphorus.

关 键 词：城市景观水体 富营养化 复合型生物滤床 天然沸石 生物修复 

分 类 号：X52[环境科学与工程—环境工程]