摘要
用无机低分子絮凝剂硫酸铁和无机高分子絮凝剂聚合硫酸铁和聚硅硫酸铁处理厌氧-好氧后的垃圾渗滤液,并通过急性毒性检测试验研究絮凝处理前后垃圾渗滤液对植物种子萌发的影响。研究结果表明,浓度为10 mmol/L,pH值为8的聚合硫酸铁对垃圾渗滤液的色度、COD有较好的去除效果,色度和COD的去除率分别达到93.1%和61.4%。通过毒性检测证明,聚合硫酸铁絮凝处理后的垃圾渗滤液几乎没有毒性,对植物的正常生长没有影响。
A study was conducted to investigate the efficiency of flocculation processes for removing color and COD from anaerobic-aerobic landfill leachate. Three types of flocculants,namely ferric sulphate, polyferric sulphate and polyferric silicate sulfate,were studied. Leachate toxicity of flocculation processes was discussed by acute toxicity tests. Results indicated that polyferric sulphate was superior to the other coagulants and removed 93. 1% of color and 61.4% of COD at an optimum dose of 10 mmol/L at pH 8. Toxicity tests also suggested that leachate toxicity is considerably lower than the others.
出处
《环境工程学报》
CAS
CSCD
北大核心
2007年第7期97-100,共4页
Chinese Journal of Environmental Engineering
基金
重庆市自然科学基金重点资助项目(CSTC-2006BA7029)
国家自然科学基金资助项目(20577072)
三峡库区生态环境教育部重点实验室访问学者基金资助
重庆大学研究生科技创新基金资助(200701Y1A0250211)
关键词
垃圾渗透液
絮凝法
毒性检测
landfill leachate
flocculation
toxicity test
