Ammonia removal from young landfill leachate by magnesium ammonium phosphate precipitation and air stripping

• Published in: Water Science & Technology Vol. 41; no. 1; pp. 237 - 240
• Main Authors: KABDASLI, I, TÜNAY, O, ÖZTÜRK, I, YILMAZ, S, ARIKAN, O
• Format: Conference Proceeding Journal Article
• Language: English
• Published: London IWA 2000; IWA Publishing
• Subjects: Aerobic treatment; Ammonia; Ammonia pressure leaching; Ammonium; Ammonium compounds; Anaerobic treatment; Applied sciences; Chemical precipitation; Chemical treatment; Emissions control; Exact sciences and technology; Landfill; Landfills; Leachates; Magnesium; magnesium ammonium phosphate; Nitrification; Organic matter; Other wastewaters; Phosphates; Pollution; Precipitation; Removal; Sanitary landfills; Stripping; Waste disposal sites; Wastewater; Wastewaters; Water pollution treatment; Water treatment and pollution; Turkey; Ammonia; Sanitary landfill; Waste dumping; Chemical precipitation; Ammonium Phosphates; Physicochemical purification; Air stripping; Leachate; Magnesium Phosphates
• ISBN: 1900222205; 9781900222204
• ISSN: 0273-1223; 1996-9732
• DOI: 10.2166/wst.2000.0034

Leachate from sanitary landfills is a strong wastewater in terms of organic matter and ammonia. Organic matter can be reduced by anaerobic plus aerobic treatment; however, ammonia reduction by nitrification often poses problems due to inhibition. In this study, ammonia removal by physical chemical treatment from young leachate and anaerobically treated young landfill leachate was experimentally investigated. Magnesium ammonium phosphate precipitation (MAP) and ammonia stripping at pH 12 provided ammonia removals over 90 and 85% respectively. Up to 80% COD removal was obtained with MAP precipitation of raw leachate.