This study was supported by the National High Technology Research and Development Program of China(863 Program)(Grant No.2005AA601010-03);the National Natural Science Foundation of China(Grant No.50778001).
In this study two types of biological contact oxidation processes(BCOP),a step-feed(SBCOP)unit and an inter-recycle(IBCOP)unit,were designed to investigate the treatment of heavily polluted river water.The Daqing Rive...