Abstract: Peroxy-monsulfate(PMS) has been used for the post treatment of biochemical treated landfill leachate effluent under UV irradiation,and the influence of PMS dosage,reaction time,initial pH of solution,types and dosage of activator on the treatment effect investigated. The results show that when the pH=7.3,reaction time is 1 h,dosage of PMS 150 mg/L,and dosage of activator 6 mg/L,PMS can effectively degrade the landfill leachate under UV irradiation,and the removing rate of COD is more than 90%. The size sequence of activation effects of different activators are Ag⁺ > Co²⁺ > Mn²⁺ > H₂O₂. Metal ions can effectively improve the degradation of organic pollutants by PMS and shorten the degradation time.

Key words: landfill leachate, peroxy-monosulflate, sulfate radical, advanced oxidation, hydroxyl radical

摘要： 在UV照射下利用过一硫酸盐（PMS）对垃圾渗滤液生化处理出水进行后处理，考察了PMS投加量、反应时间、溶液初始pH、激活剂种类和投加量对处理效果的影响。结果表明，当pH=7.3，反应时间为1 h，PMS投加量为150mg/L，激活剂投加量为6 mg/L时，PMS在UV照射下能有效对垃圾渗滤液进行降解，COD去除率可达到90%以上。不同激活物质的激活效果大小为Ag⁺ > Co²⁺ > Mn²⁺ > H₂O₂；金属离子能有效提高PMS对有机污染物的降解且可缩短降解时间。

关键词: 垃圾渗滤液, 过一硫酸盐, 硫酸根自由基, 高级氧化, 羟基自由基

CLC Number: 

• X703.1