Operational characteristics of an anaerobic baffled reactor treating low strength wastewater
A bench-scale experiment has been carried out to investigate the operational characteristics of a 9.9L anaerobic baffled reactor (ABR) treating low strength wastewater (about 500mg COD/L) under mesophilic temperatures in term of Chemical Oxygen Demand (COD) concentration, Volatile fatty acids (VFA) concentration, pH value. The reactor was efficient in the removal of COD, viz. above 80％. The hydraulic load played an important role. Large part of COD was removed in the front compartments, which indicated a less compartment number would be suitable. The separation of acidogenic and methanogenic processes existed in the ABR after long-term operation. The results indicated that the performance of system could be recovered within 4h after a 350％ hydraulic shock for 2.5h. The influence of organic shock load was complicated. The performance of system could be recovered within 8h after 50％ and 100％ organic shock loads. Under the definition scope of low strength wastewater (COD<1000mg/L), increasing organic shock loads would not deteriorate the performance of ABR. The compartmental structure of ABR provided its strong ability to resist shock loads. No granules were observed.
Anaerobic baffled reactor low strength wastewater shock loads operational characteristics
Hu Xi-quan Li Zhao-hua
Dept. of Environmental Engineering Hubei University Wuhan, P.R China School of Resource and Environment Hubei University Wuhan, P.R China
国际会议
上海
英文
2769-2773
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）