Disposal of Aluminium sulfate - Solid waste

[Ulibu]

I'm dealing with hazardous waste disposal but I cannot find a good method to dispose the Aluminium sulfate (solid) waste environmentally safe.
Someone can help me please?

Thanks

 

[bimr]

What is the content of the aluminum sulfate?

 

[ash9144]

Incineration is good method for aluminum sulfate disposal

 

[bimr]

Aluminum sulfate is a chemical conditioning agent in the water and wastewater treatment industry. If the aluminum sulfate does not contain any objectional materials, it may be possible to recycle the aluminum sulfate at a wastewater treatment plant. For example, aluminum sulfate is used for phosphorus material and is quite expensive.

Not familiar with incineration of aluminum sulfate. Since it is an inorganic material, I don't see any benefit to incineration.

 

[itsleighton]

Are you sure it is hazardous in the sense you cant take it to a landfill under "special waste"?

 

[QualityTime]

bimr is correct. Alum (aliminum sulphate) is typically used in municipal water treatment plants for coagulation of the dirt and color in the raw water. The resulting floc is settled in a settling tank and/or filtered out in a gravity filter.

In wastewater treatment alum is used to bind up the phosphorus. The floc is settled out in the final settling tanks.

The advantage of using alum is that it is no where near as corrosive as ferrous or ferric chloride and is as such much easier to handle. Alum is however more expensive than the iron salts.