采用UV/H2O2和UV/S2O2-8对垃圾渗沥液的预处理实验研究

摘要

垃圾渗沥液属于较难处理的废水之一.对玻璃光反应器中紫外光UV分别与双氧水(H2O2)和过硫酸盐(S2O2-8)组合对垃圾渗沥液进行预处理,以提高其可生化性.分别在UV/H2O2和UV/S2O2-8体系下,研究了H2O2和S2O2-8的试剂用量、辐照时间等因素对COD、TOC及色度等去除率的影响.实验结果表明,UV/H2O2对COD、TOC和色度的最高去除率分别为15.8%、6.9%和39.1%.而采用UV/S2O2-8法对COD、TOC和色度的最高去除率分别为23.9%、18.7%及63.7%.%Landfill leachate is one of the wastewater which is difficult to be treated. Comparing the pretreatment efficiency of landfill leachate by means of UV photo-oxidation and using hydrogen peroxide (H2O2) and persulfate (S2O2-8) in a glass photo-reactor,its biodegradability was improved. Under the system of UV/H2O2 and UV/S2O2-8,the effect of physico-chemical parameters such as doses of H2O2 and S2O2-8,irradiation time on the removal of COD,TOC and color were determined. The maximum removal of COD, TOC and color were 15.8%, 6.9% and 39.1%, respectively with UV/H2O2. Using UV/S2O2-8, the maximum removal of COD and TOC were achieved with 23.9%, 18.7% and 63.7%,respectively.