... remove turbidity,decolorization,remove algae,remove COD,BOD and heavy metal ions and significant effect etc.It is also used ... waste water.It is also widely used in casting,paper,pharmaceuticals and leather industry etc. 4.Advantages:Odorless,taste salty,astringent ... ,soluble in water and glycerin,insoluble in alcohol,corrosive,deliquescence weathering.5.The ...