Salt inhibition kinetics in Anaerobic Sequencing Batch Biofilm (ASBBR) treating mustard tuber wastewater at low temperature

摘要：

　　Mustard tuber wastewater is of high organic content (COD =4000 ± 100 L-l),high salinity (Cl-1 =18~23 g L-1) and biodegradability (BOD5/COD ≈ 0.5).The Anaerobic Sequencing Batch Biofilm Reactor (ASBBR) pretreatment was employed to reduce much of the organics in mustard tuber wastewater.In this study the substrate removal performance and salt inhibition kinetics at low temperature and saline environment were investigated by ASBBR.The result indicated that at low temperature,an aerobic polishing step is necessary to degrade organics in hypersaline wastewater.The maximum specific substrate utilization rate (d-l) k and substrate saturation constant (mg L-1) Ks could be expressed as a function of salinity,Ks =24.19 salinity + 691.21 and k =-0.0004 salinity + 0.0251,respectively.Thus effluent COD concentration could be predicted,this may have some applications for ASBBR design and selection.

关键词： ASBBR saline wastewater salt inhibition optimization

作者: H.X.Chai W.Chen

作者单位: Ministry of Education Chongqing University, Key Laboratory of Three Gorges Reservoir Regions Eco-Environrnent, Chongqing, China

会议类型: 国际会议

会议名称: 2012 International Conference on Frontiers of Energy and Environmental Engineering(2012年第二届能源与环境工程前沿国际会议(ICFEEE2012))

会议地点: 香港

会议语种:英文

页码: 602-606

在线出版日期: 2012-12-01（万方平台首次上网日期，不代表论文的发表时间）