【摘要】 采用石灰-硫酸亚铁法混凝沉降法处理硫酸生产的废水,一次沉降控制pH为8.6、Fe/As的摩尔比值为3,二次沉 降的pH为9、Fe/As的摩尔比值为15。若废水的砷浓度为100 mg·L-1,经二次处理后砷浓度<0.2 mg·L-1,砷的去除率>99.8％,出 水的pH值、Fe和As的含量均低于国家的排放标准。更多还原

【Abstract】 using the method of Lime-coppras deal with arseric wastewater, when the concertration of arsen is 100mg/L, controlling pH to 8.6, nFe/nAs to 3 at the first settlement, and pH to 9, nFe/nAs to -5 at the second settleraent, the concertration of arsen can be under 0.2mg/L it’ s lower than the country standard.更多还原