Chromic sulfate was recovered from chrome tanning wastewater by precipitation, f locculation and purification.And tanning wastewater was exhausted below the pri mary standard (1.0 mg/ L).

• 以铬鞣废水为研究对象,通过沉淀、絮凝、纯化等处理方法,将铬鞣废水中高含量的铬回收为硫酸铬,使铬鞣废水达标排放。