Waste molasses was diluted to 10%, coagulated with 800 mg/L polyaluminum chloride, and then treated in an activated sludge sequence batch reactor with a total organic carbon (TOC) loading of 0.2 kg/kg per day. Sodium hypochlorite and 3 mmol of iron sulfate solution were added to the supernatant
in a 1:1 molar ratio. As a result, the treated water had a chromaticity of 14. Biologically treated livestock wastewater was treated in a continuous Fenton experiment for 6 h using hydrogen peroxide and iron powder. From an initial color loading of 653, the treated water was significantly decolorized to
Department of Environmental Science, Prefectural University of Hiroshima, Nanatuka-machi 5562, Shobara-shi, 727-0023, Hiroshima, Japan.
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