Abstract:

Abstract: We used a submerged hollow fiber membrane bioreactor with specification of 3 m3/d for the treatment of wastewater from the concentrated pomegranate juice production from a juice factory. The results of the experiment showed that when the inlet CODCr level was 756~1097 mg/L, in the effluent of the reactor it dropped down to 34~95 mg/L. Removal ratios of about 89.5%~97.0% had been obtained for CODCr. About 10%~20% of CODCr was caught by membrane. The MBR was continuously operated for 60 days to treat juice wastewater, which was in stable condition, and met the discharge standard. It proved that the process is feasible, which is simple to operation, and easy to management. What is more, it could reduce about 50% of the cost of adding nutrients nitrogen and phosphorus, it could be reference for the juice of industrial scale MBR process for treatment of the juice wastewater.