title: Appling hydrolysis acidification-anoxic-oxic process in the treatment of petrochemical wastewater: From bench scale reactor to full scale wastewater treatment plant.
abstract: A hydrolysis acidification (HA)-anoxic-oxic (A/O) process was adopted to treat a petrochemical wastewater. The operation optimization was carried out firstly by a bench scale experimental reactor. Then a full scale petrochemical wastewater treatment plant (PCWWTP, 6500 m(3) h(-1)) was operated with the same parameters. The results showed that the BOD5/COD of the wastewater increased from 0.30 to 0.43 by HA. The effluent COD was 54.4 mg L(-1) for bench scale reactor and 60.9 mg L(-1) for PCWWTP when the influent COD was about 480 mg L(-1) on optimized conditions. The organics measured by gas chromatography-mass spectrometry (GC-MS) reduced obviously and the total concentration of the 5 organics (1,3-dioxolane, 2-pentanone, ethylbenzene, 2-chloromethyl-1,3-dioxolane and indene) detected in the effluent was only 0.24 mg L(-1). There was no obvious toxicity of the effluent. However, low acute toxicity of the effluent could be detected by the luminescent bacteria assay, indicating the advanced treatment is needed. The clone library profiling analysis showed that the dominant bacteria in the system were Acidobacteria, Proteobacteria and Bacteriodetes. HA-A/O process is suitable for the petrochemical wastewater treatment.
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Research Center of Water Pollution Control Technology, Chinese Research Academy of Environment Sciences, Beijing 100012, China.
authors.forename: Changyong
authors.initials: C
authors.lastname: Wu
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Research Center of Water Pollution Control Technology, Chinese Research Academy of Environment Sciences, Beijing 100012, China. Electronic address: zhouyuexi@263.net.
authors.forename: Yuexi
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
authors.forename: Qingliang
authors.initials: Q
authors.lastname: Sun
authors.affiliation: Research Center of Water Pollution Control Technology, Chinese Research Academy of Environment Sciences, Beijing 100012, China; School of Environment, Tsinghua University, Beijing 100084, China.
authors.forename: Liya
authors.initials: L
authors.lastname: Fu
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Research Center of Water Pollution Control Technology, Chinese Research Academy of Environment Sciences, Beijing 100012, China.
authors.forename: Hongbo
authors.initials: H
authors.lastname: Xi
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Research Center of Water Pollution Control Technology, Chinese Research Academy of Environment Sciences, Beijing 100012, China.
authors.forename: Yin
authors.initials: Y
authors.lastname: Yu
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
authors.forename: Ruozhen
authors.initials: R
authors.lastname: Yu
mesh_terms: D000818:Animals; D001419:Bacteria / Q000187:drug effects / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism; D019149:Bioreactors; D000460:Chlorophyta / Q000187:drug effects / Q000254:growth & development; D003621:Daphnia / Q000187:drug effects; D019652:Extraction and Processing Industry; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D010578:Petroleum; D010776:Photobacterium / Q000187:drug effects; D055549:Volatile Organic Compounds / Q000032:analysis / Q000378:metabolism / Q000633:toxicity; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000032:analysis / Q000633:toxicity; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism / Q000633:toxicity; D015027:Zebrafish; D015053:Zygote / Q000187:drug effects
chemical_list: D010578:Petroleum; D055549:Volatile Organic Compounds; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Biodegradability; Clone library; Organic pollutants removal; Petrochemical wastewater; Wastewater toxicity