An Instance about Juice Wastewater Treatment with UASB and Bio-contact Oxidation and Coagulation and Floatation Process

UASB, bio-contact oxidation, coagulation and floating process was adopted in treatment of juice wastewater. Operation results show that when the main pollutants of COD, BOD and SS in the influent were 6033 mg.L-1, 2512 mg.L-1 and 2200mg.L-1, the effluent could reach 63 mg.L-1, 25 mg.L-1 and 29 mg.L-1, respectively, with the removal rate of 99.0 %, 99.0 %, 98.7 %. The effluent reached the I-class criteria specified in Integrated Wastewater Discharge Standard (GB 8978-1996) (COD <60 mg.L-1, BOD <20 mg.L-1, SS <20 mg.L-1). The process provides a practical reference for the similar high concentration organic wastewater treatment processing.