Investigation and Risk Assessment on Key Controlled Emerging Pollutants in Outfall of a WWTP in Typical Chemical Industrial Park
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(C4C16),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.
WWTPs in chemical industrial parkoutfallkey controlled emerging pollutantshort chain PFASsrisk assessment
万方数据
维普
