A Study of Anaerobic Sequencing Batch Reactors for the Treatment of Soluble Wastes
Sequencing batch reactors (SBRs) are fill-and-draw periodic systems which are successfully being used in activated sludge treatment. As described by Arora et al.,' SBR technology is not new and in fact preceded the use of continuous-flow activated sludge technology. However, SBRs were forgotten for over half a century and were only revived in the early 1970s by the work of Irvine and ~av i s . ' The basic characteristics of single and multiple-tank SBR systems are described by Irvine and ~usch. ' The single tank system is well suited for non-continuous flow situations, such as those that occur in the food-processing industry or in small rural towns. Multiple-tank systems are applicable for constant or variable continuous flows.