Brewery wastewater treatment by cage-like packed anaerobic baffled reactor
笼状填料式厌氧折流反应器处理啤酒废水

The new-type reactor based on the ABR was designed which increased the anoxic and aerobic segment and was filled with cage-like filler in each separated rooms. The beer wastewater as a treatment object was treated by the new-type reactor and the start-up process of the treatment was investigated. The removal efficiency of COD and its influence factors such as the HRT and organic load were analyzed. The changes of pH and its causes were discussed on the new-type reactor in treatment process. It was explored that the lower effluent SS was caused by the retention and microbial attachment growth in the surface of the cage-filler, and the lower effluent concentration of ammonia was the result of both the biological reaction of anoxic and aerobic segment. The experiment results showed that the removal efficiencies of COD and the organic load were about 96% and 0.647~1.745 kg/(m3·d), respectively. The average effluent concentrations completely met the discharge standard of brewery wastewater when the wastewater load was 50 L/d.