Effect of biofilm growth in anaerobic reactor treating dairy wastewater

Abstract

In this study, attention was given to anaerobic digestion of dairy wastewater, which has higher COD levels and a nutritional rich media for microbial growth. Generally, Fixed Bed Biofilm Reactors are significant in treating dairy wastewater due to its capability of retaining microorganisms. This research is being carried out to examine the stability of biofilms under different shock load conditions. Initially, a lab scale reactor was experimented. Next, a pilot scale reactor with packing material was run and variations of the parameters were observed. However, due to several issues, a stable point was not obtained throughout the operation of the pilot scale reactor. Recommendations could be made on studies carried out as further research on biofilm formation, its stability under shock loads and COD reducing efficiency.