文章基本信息

标题：Optimization of Sequencing Batch Reactor Operating Conditions for Treatment of High-strength Pharmaceutical Wastewater
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作者：Emad S. Elmolla ; Natasha Ramdass ; Malay Chaudhuri 等
期刊名称：Journal of Environmental Science and Technology
印刷版ISSN：1994-7887
电子版ISSN：2077-2181
出版年度：2012
卷号：5
期号：6
页码：452-459
DOI：10.3923/jest.2012.452.459
出版社：Asian Network for Scientific Information
摘要：Optimization of the Sequencing Batch Reactor (SBR) operating conditions for high-strength non-penicillin pharmaceutical wastewater treatment is a challenging task. Two SBR were operated under different operating conditions. Three different Hydraulic Retention Times (HRT) (12, 24 and 48 h) were tested and operated under high (6000 mg L^-1) and low (4000 mg L^-1) Mixed Liquor Suspended Solids (MLSS) concentration. Statistical analysis (two-way ANOVA) using SPSS software was applied on the results to evaluate the effect of HRT and MLSS concentration on the SBR performance. The hydraulic retention time of 24 h was found suitable for the SBR and increasing HRT from 12 to 24 h significantly affected the BOD₅ removal; however, increasing HRT from 24 to 48 h or increasing MLSS concentration from 4000 to 6000 mg L^-1 did not significantly improve the SBR performance in terms of BOD₅removal. Under the optimum operating conditions (HRT 24 h and MLSS 4000 mg L^-1), the SBR achieved an efficiency of 94±1.3% in terms of BOD₅ removal and 83.9±1.7% in terms of COD removal, with complete nitrification.