摘要
本文研究了模拟稳定塘系统去除污染指示菌如总大肠菌群(TC),粪大肠菌群(FC),粪链球菌(FS)以及异养细菌(HPC)的作用。结果表明,16℃时污水在日进污水10t的模拟稳定塘系统停留9天后,TC与FC的密度下降4个数量级。在日进污水90t,污水理论水力停留时间10天的模拟稳定塘系统进行的全年跟踪监测结果表明,TC与FC密度随各塘依次递减。Ⅳ号塘出水的TC密度下降2.5个数量级,基本上达到了我国GB3838-88中规定的地面水Ⅲ级标准;FC密度下降3个数量级,达到WHO标准的轻污染水平,肯定了稳定塘系统去除污染指示菌的有效性。
In this paper, the removal efficiencies of total coliforms(TC), fecal coliforms(FC), fecal streptococcus(FS) and heterotrophic plate count(HPC) in simulated stabilization pond systems were studied. In the system treating 10 t of wastewater per day, the densities of TC and FC decreased by 4 orders of magnitude in 9 days at 16℃. Bacterial enumeration in the system treating 90 t of wastewater per day was conducted yearly. The densities of TC and FC in its effluent decreased by 2.5 and 3 orders of magnitude respectively. The effluent quality of the system, in terms of TC, reached approximately to Ⅲ degree of surface water quality standard. According to WHO's standard, the effluent quality, in terms of FC, was of 'slight pollution'. The results indicated that the two systems can effectively remove TC and FC.
出处
《应用生态学报》
CAS
CSCD
1992年第1期76-80,共5页
Chinese Journal of Applied Ecology
基金
"七.五"科技攻关项目:"常德市江北城区污水净化与资源化生态工程可行性研究"的一部分。
关键词
稳定塘
污染指示菌
去除率
Stabilization pond, Pollution indicating bacteria, Removal efficiency.
