【摘要】 采用CAF5型涡凹气浮对低浓度剩余活性污泥浓缩进行了试验研究,结果表明:絮凝剂采用FO4440SH,最佳投加量为1kg/tDS,表面活性剂采用1227,最佳投加量0.2kg/tDS,最佳固体负荷为230kgMLSS/(m3·d),最佳水力负荷为90m3/(m2·d),出水SS为200~250mg/L,在浓缩过程中污泥中的磷不会释放。更多还原

【Abstract】 Cavitation air floatation facility CAF-5 was employed to thicken low concentration excess activated sludge. In experiments flocculant FO4440SH and surfactant 1227 were added with optimal dosage of 1 kg/tDs and 0.2 kg/tDS respectively and the solid and hydraulic loadings to the facility were controlled at 230 kgMLSS/(m~3·d) and 90 m~3/(m~2·d) respectively. Finally effluent with residual SS of 200～250 mg/L was obtained. P in the sludge wouldn’t release during the thickening process.更多还原