摘要
针对硅藻土过滤吸附去除模拟垃圾渗滤中有机污染物实验,从硅藻土用量、pH、吸附时间、絮凝剂投加量等方面,探讨了硅藻土对垃圾渗滤中COD及氮化物的去除能力。结果显示,当400g硅藻土与1L水混合成预涂液,垃圾渗滤液pH值为7,垃圾渗滤液与硅藻土混合吸附时间为20min,1L污水中氯化铝絮凝剂(10%)投加量为300ml时,硅藻土对垃圾渗滤液中有机污染物及氮化物的去除能力最强。研究认为,硅藻土作为过滤吸附剂可有效处理含有高浓度有机污染物及氮化物的污水。
Adsorption filtration with diatomite was performed to remove organic pollutants of synthetic landfill leachate. The influence of diatomite dosage,pH,adsorption time,and flocculant dosage to Chemical Oxygen Demand( COD) and nitrogen removal efficiencies are discussed. The results showed that the best pollutants removal efficiencies could be obtained under the following parameters. The optimal di-atomite dosage in precoat was 400g diatomite to 1L water. The optimal landfill leachate pH was 7. The optimal adsorption time of diatomite to landfill leachate was 20 min. The optimal flocculant dosage was 300 mL aluminum chloride solution( 10%) to 1 L landfill leachate. The study indicated that adsorption filtration with diatomite might be an effective method to treat wastewater containing high concentration of organic pollutants and nitrogen.
出处
《节能》
2014年第2期12-15,2,共4页
Energy Conservation
基金
国家自然科学基金(项目编号:51178089)
关键词
硅藻土
垃圾渗滤液
过滤吸附
参数优化
diatomite
landfill leachate
adsorption filtration
optimization
