摘要
生态过滤工艺是一种利用由微生物和以蚯蚓为代表的微型动物共同组成的人工生态系统对城镇污水中的氨氮进行降解和代谢的新型环保技术。该工艺由生物予处理和生态过滤组合而成。当城镇污水采用适当的生物予处理 ,生态滤池的水力负荷为 3 0m3 /m2 d时 ,该工艺处理城镇污水的氨氮去除率达 58%～ 70 % ,氨氮出水浓度为 1 0～ 1 5mg/L ,可达到国家一级排放标准。该工艺还具有比活性污泥法除氮工艺节约 60 %的能耗、 37 5%的造价。
Removal of ammonia nitrogen in sewage by bio-eco-filtrat ion is a new sewage treatment process, which is a combined biological and ecolog ical treatment using their synergy for the conversion. The removal efficiency of the filter observed in this study is 58%-70% for ammonia nitrogen, while ammon ia nitrogen concentration in treated sewage varies from 10-15 mg/L. The process will save 37.5% of the investment and 60% of the operation and mai ntenance cost s, have lower sludge production and an easier maintenance as compared with activ ated sludge process.
出处
《四川环境》
2002年第3期14-16,共3页
Sichuan Environment
