渗滤液
凝结
反渗透
污染物
环境化学
废物管理
毒性
环境科学
渗透
化学
环境工程
制浆造纸工业
膜
工程类
医学
生物化学
有机化学
精神科
作者
Suthida Theepharaksapan,Chart Chiemchaisri,Wilai Chiemchaisri,Kazuo Yamamoto
标识
DOI:10.1016/j.biortech.2010.11.091
摘要
Removals of pollutants and toxic organic compounds and reduction in bio-toxicity of leachate along an operating full-scale leachate treatment system utilizing chemical coagulation, sand filtration, microfiltration (MF) and reverse osmosis (RO) membrane were evaluated. High pollutant removals were achieved mainly by coagulation and sand filtration. Major toxic organic pollutants, i.e. DEHP, DBP and bisphenol A were removed by 100%, 99.6% and 98.0%. Acute toxicity test using water flea, Nile Tilapia and common carp and genotoxicity (Comet assay) were conducted to determine toxicity reduction in leachate along the treatment. Ammonia was found to be the main acute toxic compounds in leachate as determined by LC(50) but the effect of organic substances was also observed. DNA damage in fish exposed to diluted raw leachate (10% of LC(50)) was found to be 8.9-24.3% and it was subsequently decreased along the treatment. Correlation between pollutants and its bio-toxicity was established using multivariable analyses.
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