Applicability of liquid ion exchange to alum recovery from waste stabilization pond sludge.

This paper reports the evaluation of the tertiary application of relatively low doses of alum for improving the overall performance and reliability of existing wastewater treatment plants. With this type of system, the additional capability for phosphorus removal is imbibed by simply altering the chemical dose. The study was conducted on wastewater from a Stabilization pond having capacity of 54 mld, which was treating municipal wastewater from Ujjain city. The wastewater had suspended colloidal impurities.