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Water Science & Technology Vol 65 No 11 pp 1988–1993 © IWA Publishing 2012 doi:10.2166/wst.2012.098 Anaerobic degradation of purified terephthalic acid wastewater using a novel, rapid mass-transfer circulating fluidized bedYangyang Feng, Beibei Lu, Yu Jiang, Yinwen Chen and Shubao ShenNational Bio-Chemical Engineering Technique Research Center, Nanjing University of Technology, Nanjing 210009, China E-mail: zsbshen@gmail.comNational Engineering Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, No.5 Xinmofan Road, Nanjing 210009, China ABSTRACT The anaerobic treatability of purified terephthalic acid (PTA) wastewater in a novel, rapid mass-transfer fluidized bed reactor using brick particles as porous carrier materials was investigated. The reactor operation was stable after a short 34 day start-up period, with chemical oxygen demand (COD) removal efficiency between 65 and 75%, terephthalate (TA) removal efficiency between 60% and 70%, and system organic loading rate (OLR) increasing from 7.37 to 18.52 kg COD/m3 d. The results demonstrate that the reactor is very efficient, and requires a low hydraulic retention time (HRT) of 8 h to remove both TA and COD from the high-concentration PTA wastewater. The system also has high resistance capacity to varied OLR. Keywords: anaerobic; porous carrier; rapid mass transfer fluidized bed reactor; TA wastewater eProduct: Buy this article for £24.00 (IWA MEMBER PRICE: £18.00) All prices include VAT. For customers where VAT should not be applied, the VAT amount will be removed upon payment |
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