The results show that COD,cloudiness and colority of the papermaking wastewater are all decreased under the discharging standard and the mechanism of cleaning is discussed.

• 结果表明,造纸废水经酸化后的粉煤灰处理及高铁酸钾处理后,其COD值、浊度、色度均降至排放标准以下。初探了净化机理。