【摘要】 研究了粉煤灰与少量的硫酸烧渣和适量的固体NaCl混合 ,将混合物在加热条件下用稀硫酸处理 ,制得集物理吸附和化学混凝为一体的混凝剂。这种混凝剂与无机高分子絮凝剂PSA配合用于焦化废水的处理 ,SS、CODCr、色度和酚的去除率分别为 95 %、86 %、96 %和 92 %。混凝沉降速度快 ,污泥体积小 ,处理费用低 ,结合显微照片探讨了酸浸粉煤灰混凝剂对含酚废水的混凝沉降机理更多还原

【Abstract】 A fly ash\|based coagulant combining the capabilities of both physical adsorption and chemical coagulation has been prepared by adding a small amount of pyrite slag and an appropriate amount of NaCl to coal fly ash in coal\|fired thermal power plants and then the resulting mixture being stirred and extracted with a dilute H\-2SO\-4 for 2.5 h at 100℃.This coagulant was used to treat toxic phenols wastewater in a coke plant,the removal rates of SS,COD Cr ,colority and phenol were 95%,86%,96% and 92% respectively,which featured a higher rate of settlement,a smaller volume of sludge,and a lower cost of treatment.The coagulation mechanism of fly ash coagulant in the treatment of toxic phenols wastewater in the coke plant has been studied.更多还原