摘要
Abstract
The concentrated solution of reverse osmosis membrane in domestic waste landfills is often used for recharging the garbage heap,but it may affect the quality of leachate.Three domestic waste landfills are selected as research objects,and the monitoring data are analyzed from the first half of 2023,and the relationship between water quality indicators and the amount of reverse osmosis membrane concentrate reinjection is explored.The research results indicate that there is a significant phenomenon of critical reinjection rate in indicators such as Suspended Solids(SS),Biochemical Oxygen Demand after 5 days(BOD5),and conductivity,showing significant seasonal variations.During this process,by analyzing the triple action mechanisms of physics,chemistry and biology,the principle of pollutant control in the concentrated solution reinjection process is elucidated,and the optimal ranges of key parameters such as reinjection volume,pH value,temperature,moisture content,and organic load are determined,and the optimization plans are proposed to provide a theoretical basis for the scientific management of reverse osmosis membrane concentrated solution reinjection systems in domestic waste landfills.关键词
生活垃圾填埋场/反渗透膜/浓缩液回灌/垃圾堆体/渗滤液水质Key words
domestic waste landfills/reverse osmosis membrane/concentrated solution recharge/garbage heap/water quality of leachate分类
资源环境
