典型化工园区污水处理厂排污口重点管控新污染物调查及风险评估  

Investigation and Risk Assessment on Key Controlled Emerging Pollutants in Outfall of a WWTP in Typical Chemical Industrial Park

作　　者：杨蕾 陈银川 邹霞 马典云 YANG Lei;CHEN Yinchuan;ZOU Xia;MA Dianyun(Shanghai Ecological Environment Science Research Center of Yangtze River Basin Ecological Environment Supervision and Administration Bureau,Shanghai 200120,China;Shanghai Huace Pinbiao Testing Technology Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]长江流域生态环境监督管理局上海生态环境科学研究中心,上海200120 [2]上海华测品标检测技术有限公司,上海200120

出　　处：《净水技术》2024年第12期136-147,共12页Water Purification Technology

摘　　要：对安徽某省级化工园区污水处理厂排污口10种重点管控新污染物及7种邻苯二甲酸酯(PAEs)、双酚A(BPA)及其衍生物等进行了监测,利用风险熵值法(RQ)对排污口新污染物的生态风险进行评估。结果表明:该排污口全氟及多氟化合物(PFASs)、4-支链壬基酚(4-t-NP)、五氯酚(PCP)均有检出,平均质量浓度分别为123.3、96.1、135 ng/L。排污口PFASs、壬基酚(NP)浓度在国内污水处理厂中处于较低水平,但全氟辛磺酸(PFOS)浓度处于较高水平。短链PFASs(C4~C6)浓度占比达59.9%,排污口PCP浓度远低于排放标准。BPA、双酚B(BPB)、四溴双酚A(TBBPA)、PAEs、十溴二苯醚(BDE-209)、短链氯化石蜡(SCCP)、六氯丁二烯(C_(4)Cl_(6))、三氯杀螨醇(DTMC)、得克隆顺式异构体(cis-DP)和反式异构体(anti-DP)均未检出。该排污口新污染物生态风险较低。但多种PFASs检出,后期需持续关注PFASs的复合毒性影响、PFASs向短链污染发展的趋势和园区污水厂4-t-NP排放情况。Samples were collected from outfall of a wastewater treatment plant(WWTP)in an Anhui provincial chemical industrial park,including ten key controlled emerging pollutants,seven phthalate esters(PAEs),bisphenol A(BPA)and its derivatives,etc.The concentrations of them were determined and analyzed,using the risk quotient(RQ)method to assess the ecological risk of emerging pollutants in effluent.The results showed that per-and polyfluoroalkyl substances(PFASs),4-branched nonylphenol(4-t-NP),and pentachloro-phenol(PCP)were detected,with average mass concentration of 123.3 ng/L,96.1 ng/L,and 135 ng/L.The concentration of PFASs,nonylphenol(NP)in it was at a relatively low level among domestic WWTPs outfall.However,the concentration of perfluorooctane sulfonate(PFOS)was at a relatively high level,with the concentration of short chain PFASs(C4~C6)accounting for 59.9%.The concentration of PCP at the outfall was much lower than the emission standard.BPA,bisphenol B(BPB),tetrabromobisp-henol A(TBBPA),PAEs,decabromodiphenyl ether(BDE-209),short chain chlorinated paraffin(SCCP),hexachlorobutadiene(C_(4)Cl_(6)),diclofol(DTMC),declone cis(cis-DP)and trans isomers(anti-DP)were not detected.The ecological risk of emerging pollutants in outfall was relatively low.However,multiple PFASs were detected.It is necessary to pay continuous attention to composite toxic effects of PFASs,the trend of PFASs towards short chain pollution and the emission of 4-t-NP from WWTP in the park.

关 键 词：化工园区污水处理厂 排污口 重点管控新污染物 短链全氟及多氟化合物 风险评估 

分 类 号：TU992[建筑科学—市政工程]