Ecotoxicological and chemical characterization of selected treatment process effluents of municipal sewage treatment plant.
The triolein-containing semipermeable membrane devices (SPMDs) were deployed for 4 weeks in a sewage treatment plant in Beijing, China, to sample and concentrate priority hydrophobic organic pollutants in a sewage treatment process. The chemical analyses and ecotoxicities of the residuals of SPMDs dialysate were examined. The data from the chemical analyses by gas chromatography-mass spectrometry selected ion monitoring mode indicated the lower removal for polychlorinated biphenyls (PCB) congeners and polycyclic aromatic hydrocarbons (PAHs) coincided with the persistence of them in the environment. The acute toxicity examined by bioluminescence test with Vibrio fischeri revealed approximately only 20% decrease in the overall toxicity of the influent after the activate sludge treatment process. The ethoxy resorufin-O-deethylase (EROD) induction with a micro-EROD assay in vitro using H4-IIE rat hepatoma cell cultures demonstrated the presence of persistent organics in influent and sequency effluents. Results obtained suggested that integration of the SPMD technique and chemical analyses and bioassay might be a valuable approach for the risk assessment of hydrophobic organic pollutants in water ecosystem. It revealed the necessity for organic pollutants monitoring and ecotoxicities examining of sewage treatment plants.
Wang
Chunxia
C
State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China. cxwang@nsfc.gov.cn
Wang
Yi
Y
Kiefer
F
F
Yediler
A
A
Wang
Zijian
Z
Kettrup
A
A
D000818:Animals; D001681:Biological Assay / Q000379:methods; D006528:Carcinoma, Hepatocellular / Q000473:pathology; D019363:Cytochrome P-450 CYP1A1 / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods; D008401:Gas Chromatography-Mass Spectrometry; D008163:Luminescent Measurements; D011078:Polychlorinated Biphenyls / Q000032:analysis / Q000302:isolation & purification / Q000633:toxicity*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis / Q000302:isolation & purification / Q000633:toxicity*; D051381:Rats; D012037:Refuse Disposal; D012722:Sewage / Q000737:chemistry*; D014407:Tumor Cells, Cultured; D014733:Vibrio; D014873:Water Pollutants / Q000032:analysis / Q000302:isolation & purification / Q000633:toxicity*; D018508:Water Purification
D011084:Polycyclic Aromatic Hydrocarbons; D012722:Sewage; D014873:Water Pollutants; D011078:Polychlorinated Biphenyls; D019363:Cytochrome P-450 CYP1A1