环境工程学报2025，Vol.19Issue(10)：2403-2413,11.DOI:10.12030/j.cjee.202407061
污水处理厂新污染物负去除率现象的统计、成因及对策分析
Analysis of statistics,causes,and countermeasures for the negative removal rate phenomenon of emerging contaminants in wastewater treatment plants
摘要
Abstract
This study investigated the phenomenon of negative removal rates of emerging contaminants in the influent and effluent of 129 wastewater treatment plants in China,analyzed potential causes,and proposed corresponding countermeasures.The results indicated that the phenomenon of negative removal rates for emerging contaminants is relatively frequent in wastewater treatment plants in China.Based on the statistics of influent and effluent contaminant concentration data,the average proportion of negative removal rates is 10％.37 emerging contaminants exhibited negative removal rates,including 20 pharmaceuticals and personal care products(PPCPs),9 persistent organic pollutants(POPs),and 8 endocrine disrupting chemicals(EDCs).Among these,78.4％of the contaminants were both persistent and mobile.Among the data on per-and polyfluoroalkyl substances(PFASs),non-antibiotic pharmaceuticals,antibiotics,hormonal EDCs,and phenolic and ester-based EDCs,the proportions of negative removal rates were 22.2％,21.8％,7.9％,6.7％,and 2.8％,respectively.Fourteen emerging contaminants had negative removal rates exceeding 10％,listed in descending order as follows:perfluorooctanoic acid,perfluorobutanoic acid,perfluoropentanoic acid,perfluorobutanesulfonic acid,perfluorohexanoic acid,carbamazepine,roxithromycin,sulfamethoxazole,perfluorohexanesulfonic acid,estrone,erythromycin,clarithromycin,sulfadiazine,and 17α-ethinylestradiol.Possible reasons for the negative removal rates include:quantification errors;undetected concentrations in the particulate phase;fluctuations in influent contaminant concentrations and the hysteresis effect of hydraulic retention time(HRT)in the effluent;reverse release or generation of contaminants in specific treatment units;transformation of related substances;and leaching contamination of plasticizers.Corresponding countermeasures were proposed:strengthening laboratory quality control;simultaneously measuring contaminant concentrations in both aqueous and particulate phases;collecting 24-hour composite samples for 3-7 consecutive days for detection;measuring contaminant removal rates by treatment units;simultaneously monitoring concentrations of related substances;and avoiding the selection of monomers potentially contaminated by plasticizers for research.The high correlation between negative removal rates of emerging contaminants and their persistence and mobility warrants further attention in subsequent studies.关键词
污水处理厂/新污染物/负去除/持久性/迁移性Key words
wastewater treatment plant/emerging contaminants/negative removal/persistence/mobility分类
资源环境引用本文复制引用
赵曦,刘柽,黄舒琳,韦斯..污水处理厂新污染物负去除率现象的统计、成因及对策分析[J].环境工程学报,2025,19(10):2403-2413,11.基金项目
国家自然科学基金面上项目(22376092) （22376092）
国家重点研发计划课题(2023YFC3706601) （2023YFC3706601）
