The survey revealed the fact that in India, alum is used for the improvement of effluent quality but the work on alum recovery and reuse is fragmentary. Therefore this work emphasized on recovery of alum from sludge and its reuse for waste water treatment. Various methods have been reported for treatment and disposal of alum sludge.

This paper presents, result of laboratory experiments for the recovery of alum from sludge obtained from tertiary treatment of effluent collected from waste stabilization pond after grab sampling. The study was conducted on wastewater from a stabilization pond having capacity of 54 mld, which was treating municipal wastewater from Ujjain city.