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通过在BAF前或后投加不同量的高锰酸钾,考察高锰酸钾对给水BAF/常规工艺处理微污染原水的强化效果,并确定最佳投加点和投加量。结果表明:在给水BAF前投加0.8 mg/L的高锰酸钾时处理效果最佳,对NH3-N、CODMn、锰和藻类的总去除率分别达到了99.4%、70.6%、92.5%和95.7%,相应的砂滤出水平均值分别为0.03 mg/L、1.60 mg/L、0.03 mg/L和33.6×104个/L,满足《生活饮用水卫生标准》(GB 5749—2006)和《饮用净水水质标准》(CJ 94—2005)的要求。
By adding different amounts of potassium permanganate before or after BAF, the effects of potassium permanganate on the treatment of slightly polluted raw water by BAF / conventional process were investigated, and the best dosage and dosage were determined. The results showed that the best removal rate of NH3-N, CODMn, manganese and algae reached 99.4%, 70.6% and 92.5%, respectively, when adding 0.8 mg / L potassium permanganate before BAF 95.7% respectively. The corresponding mean values of sand filtration were 0.03 mg / L, 1.60 mg / L, 0.03 mg / L and 33.6 × 10 4 / L, respectively, which met the standards of Sanitary Standard for Drinking Water (GB 5749-2006) Drinking water quality standards "(CJ 94-2005) requirements.