Application of A/O process to the treatment of the white cardboard wastewater
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A/O process of the white cardboard wastewater treatment has been running over 4 years in Ningbo Zhonghua Paper Making Co.,Ltd. This process includes the deposition stage to remove the SS and the A/O process to remove the BOD. Compared with general active sludge process, this process can endure wastewater charge impact better,Its operation parameters can be controlled and adjusted easily. Its effluent is stable and the COD Cr is low. Through the improvement,the running cost has been lowered to less than RMB$0.40/t.