【地域資源開発学科】画期的な廃液の脱色法

Hiroyuki Harada

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 84.

食品廃液や畜産廃液の脱色は、これまで有効な方法が確立されていませんでした。この学術書籍では、フェントン反応を利用した脱色方法についてまとめました。