不同填料对人工湿地模拟柱中指示菌的去除  

Effect of Fillings on Removal of Indicator Bacteria From Column of Simulated Wetland

作　　者：李明[1,2] 周巧红[1] 武俊梅[1,2] 王荣[1,2] 吴振斌[1] 

机构地区：[1]中国科学院水生生物研究所淡水生态与生物技术国家重点实验室,湖北武汉430072 [2]中国科学院研究生院,北京100049

出　　处：《生态与农村环境学报》2010年第1期68-72,共5页Journal of Ecology and Rural Environment

基　　金：国家杰出青年基金(39925007)

摘　　要：为研究不同填料对指示菌的去除效果,选取沸石、无烟煤、页岩、蛭石、陶瓷滤料、砾石、钢渣、生物陶粒8种填料,进行垂直流人工湿地模拟柱净化污水试验。结果表明,8种填料中对3种指示菌(异养细菌、大肠菌群和粪链球菌)去除率较高的为钢渣(99.9%)和无烟煤(95.9%),推测主要是因为其出水分别呈碱性和酸性造成。除钢渣和无烟煤外,去除率较高的为沸石和蛭石,去除率较低的为陶瓷滤料和生物陶粒。相关分析结果表明6种填料(不包括钢渣和无烟煤)对指示菌去除率与填料的渗透系数间存在负相关关系,推测它们主要是通过过滤吸附的机制去除指示菌。In order to study effect of fillings on removal of indicator bacteria （ heterotrophic bacteria, coliforms group, fecal streptococcus）, zeolite, anthracite, shale, vermiculite, ceramic filter media, gravel, blast furnace steel slag and bioceramic were chosen as fillings in columns of simulated wetland in a wastewater treatment experiment. Results show that anthracite and steel slag were the highest in bacteria-removing efficiency, being 95.9% and 99.9% respectively, probably because the effluent from the two columns was acidic and alkaline, respectively. Vermiculite and zeolite came next, while ceramic filter media and bio-ceramic followed in the rear. Correlation analysis revealed negative correlation existed between indicator bacteria removing efficiency and permeability of the six different fillings （except steel slag and anthracite） , suggesting that filtration absorption is the mechanism of the fillings removing indicator bacteria.

关 键 词：人工湿地 去除率 填料 指示菌 

分 类 号：X52[环境科学与工程—环境工程]