污水出水有机物对臭氧氧化舒必利的影响

摘要

臭氧氧化可以有效去除诸如药物及个人护理品（PPCPs）等新兴有机污染物，但去除效果受污水出水水质波动的影响。本研究选择了腐殖酸（HA）、牛血清蛋白（BSA）和海藻酸钠（AGS）3种典型有机物作为模型污水出水有机物（EfOM），从降解速率和矿化程度两方面出发，考察了 EfOM 对臭氧氧化去除一种常用抗精神病药物残留舒必利（SP）的影响。结果表明，臭氧氧化能有效降低水溶液中SP的浓度，在各反应条件下，反应8min后去除率均可达85%以上。然而，在研究条件下，臭氧氧化对SP的矿化效果不佳，反应25min后的TOC去除率小于10%。加入HA和BSA后，SP的臭氧氧化反应受到抑制，随着HA和BSA浓度的增加，臭氧氧化SP的反应速率逐渐降低，反应溶液的矿化程度有所提高；而浓度为0～3.0mg/(L TOC)的AGS对臭氧氧化SP的影响较小。%Ozonation can effectively remove emerging pollutants,such as pharmaceuticals and personal care products(PPCPs). However,the effectiveness may be affected by the matrix of wastewater effluent. In this study,the influence of effluent organic matter(EfOM)on the ozonation of sulpiride (SP),a regularly utilized antipsychotic drug,was investigate at two aspects of degradation and mineralization. And three representative model compounds,humic acid(HA),bovine serum albumin (BSA),and sodium alginate(AGS),were used to simulate the main constituents in EfOM. The results showed that ozonation can effectively remove SP concentration from aqueous solution,with the removal efficiency>85%within 8 min. However,SP couldn’t be mineralized completely,and TOC removal efficiency was <10% after 25min. The ozonation of SP was hindered by the added HA and BSA. With increasing concentrations of HA and BSA,the reaction rate of SP decreased and the mineralization of SP solution was enhanced. However,the influence of AGS on the ozonation of SP was minor at AGS concentrations of 0—3.0mg/(L TOC).