利用响应曲面法研究垃圾渗滤液的电絮凝处理效果  

Study on the Treatment Effect of Electroflocculation on Landfill Leachate by Using Response Surface Methodology

作　　者：常蓉 赵扬 张辰 周小刚 王彬[4] CHANG Rong;ZHAO Yang;ZHANG Chen;ZHOU Xiao-gang;WANG Bin(Yunnan National Engineering Research Center for Control&Treatment of Heavy Metal Pollution,Yunnan Research Academy of Eco-environmental Sciences,Kunming 650034,China;Yunnan Solid Wastes Management Center,Kunming 650034,China;Faculty of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming 650028,China;School of Environment and Resource,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]云南省生态环境科学研究院云南省重金属污染控制工程技术研究中心,云南昆明650034 [2]云南省固体废物管理中心,云南昆明650034 [3]昆明理工大学环境科学与工程学院,云南昆明650028 [4]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《生态与农村环境学报》2024年第10期1395-1404,共10页Journal of Ecology and Rural Environment

基　　金：云南省科技厅科技计划项目(202202AH210007)。

摘　　要：通过研究不同电流密度、极板间距的单电极电絮凝体系在120 min内对老龄垃圾渗滤液中COD、氨氮的去除效果,基于BBD响应曲面法探究了电流密度、极板间距、反应时间的单独及相互作用,从优化目标污染物去除率与电絮凝体系能耗角度分析电絮凝构建策略。结果表明,电流密度、极板间距、反应时间3个单一因素与COD、NH_(3)-N去除率存在显著相关性,电流密度与反应时间呈正相关,与极板间距呈负相关,3个因素两两交互对COD、NH_(3)-N的去除影响不显著。在极板间距5.5 cm、电流密度80 mA·cm^(-2)、反应时间120 min的运行条件下目标污染物去除率最大,COD为87%,NH_(3)-N为86.5%。从安全、经济、环境多方面综合考虑,在长时间、低电流密度和短时间、高电流密度这2个电絮凝构建体系下可实现污染物高效净化及电解池体系低能耗。The removal efficiency of COD and NH 3-N in aged landfill leachate by single electrode electroflocculation system with different current density and plate spacing in 120 minutes was studied.Based on the BBD response surface method,the single and interaction of current density,plate spacing and reaction time were investigated.From the point of view of optimizing the removal rate of target pollutants and the energy consumption of electroflocculation system,the construction strategy of electroflocculation was analyzed.The results show that the current density,plate spacing and reaction time were significantly correlated with the removal rates of COD and NH 3-N.The removal efficiency was positively correlated with changes in current density and negatively correlated with electrode spacing.The interaction of three factors had no significant effect on the removal of COD and NH 3-N.The maximum removal rates were found to be 87%for COD and 86.5%for NH 3-N,achieved at a current density of 80 mA·cm-2,an electrode spacing of 5.5 cm and a reaction time of 120 min.Considering the safety,economy and environment,under the two electro-flocculation systems of long time,low current density and short time,high current density,the invention can realize the high-efficiency purification of pollutants and the low energy consumption of the electrolytic cell system.

关 键 词：电絮凝 垃圾渗滤液 响应曲面法 去除率 能耗 

分 类 号：X52[环境科学与工程—环境工程]