磺胺甲恶唑在垂直流湿地中的去除行为  

Occurrence and Removal of Sulfamethoxazole in Vertical Subsurface Flow Constructed Wetland

作　　者：杨海燕[1] 杨博[1] 陈义华[1] 孙广东[1] 金秋[1] 

机构地区：[1]北京建筑大学城市雨水系统与水环境省部共建教育部重点试验室,北京100044

出　　处：《科学技术与工程》2017年第18期341-348,共8页Science Technology and Engineering

基　　金：北京市属高等学校高层次人才引进与培养计划(PXM2013-2015_014210_000167);城市雨水系统与水环境省部共建教育部重点试验室研究基金资助

摘　　要：以北京清河为研究背景,在广谱抗生素中选取常用的磺胺甲恶唑(SMX)为研究对象,对其在垂直流式湿地系统中的去除行为进行研究。通过改变水力停留时间(HRT),分析HRT对SMX去除效果的影响,确立出本试验最佳的HRT为16 h。改变SMX负荷率后发现,SMX的去除趋势是先升高后降低,SMX去除率范围是81.73%~99.74%,平均值为92.80%。在SMX从液相向固体组合基质(沸石、陶粒和炉渣)的迁移过程中,炉渣基质层对SMX的吸附作用最好,其次是沸石、陶粒,平均去除率分别为31.76%、25.6%和18.85%。沸石层的SMX的降解作用最好,其次是陶粒、炉渣,平均去除率分别为3.40%、2.49%和1.86%。通过SMX去除率与常规污染指标的相关系数分析,发现SMX的去除效率与COD、TN的去除效率呈极显著正相关,这表明SMX通过好氧生物降解作用去除。The behaviour of sulfamethoxazole chosen as a kind of broad-spectrum antibiotic has been studied in vertical subsurface flow constructed wetland.The effects of both matrix adsorption and microbial degradation of the whole substrate as well as respective layer in different inflow concentration were researched.To explore the different hydraulic retention time （HRT） on the effects of the SMX remove establish the best HRT for 16 h.The removal efficiency of sulfamethoxazole ranged between 81.73% and 99.74% with a average value of 92.80%.In the process of flow from the liquid phase to the solid composite matrix （zeolite, ceramsite and slag）, slag showed higher adsorption on sulfamethoxazole by 31.76%,followed by 25.61% and 18.85% for zeolite and ceramsite,however, zeolite achieved greater degradation with the value of 3.40%,2.49% and 1.86% respectively for ceramsite and slag,on average.The removal of sulfamethoxazole was significantly positively correlated with the degradation of NH＋4-N and TN（P〈0.01）based on analysis of the correlation coefficient between sulfamethoxazole removal rate and hydration index,which indicated that sulfamethoxazole was potentially degraded by aerobic biodegradation.

关 键 词：磺胺甲恶唑 垂直流湿地 基质吸附 微生物降解 

分 类 号：X703.1[环境科学与工程—环境工程]