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In this study, combined ozone oxidation and biological aerated filter (BAF) processes treating cyanide containing electroplating wastewater was investigated. The combined process of first BAF–ozone–second BAF (BAF1–O 3 –BAF2) was proved the optimal combined way. Under the optimal condition of 100mg/L ozone dosage, BAF1 HRT (hydraulic retention time) 9h and BAF2 HRT 6h, the CN − , COD...
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