摘要
利用由微生物和以蚯蚓为代表的微型动物组成的人工生态系统对城镇污水中的污染物质进行降解处理。该系统由布水区、蚯蚓滤床和排水区 3部分组成 ,集物理过滤、吸附、好氧和厌氧生物处理以及污泥堆肥处理等功能。蚯蚓在滤床中起分解和利用污水和污泥中的有机物、清通滤床防止堵塞以及促进含氮有机物硝化 反硝化过程的重要作用。本研究中生态滤池对城镇污水的CODCr、BOD5、SS、氨氮等污染物均有较高的去除率。
A degradation treatment of the pollutants in the urban sewage is done by an artificial biosystem of microanimals,such as microbes and earthworms.This system consists of a watering zone,an earthworm filter bed and a dewatering zone,which puts together the functions of the physical filtration and adsorption,aerobic and anaerobic biotreatments etc.The earthworm in the filter bed can decompose and use the organics of the sewage and sludge;it also has an important role of promoting nitrification denitrification of the nitrogenous organics.The higher removal rates of COD Cr ,BOD 5,SS and ammonia nitrogen in the urban sewage can be obtained by the biofilter.It also features simple flow path,convenient management,resistance to shock load,low cost and no surplus sludge etc.
出处
《环境工程》
CAS
CSCD
北大核心
2001年第2期20-22,共3页
Environmental Engineering
