Phosphate removal from waste water by a seeding approach using novel seeding material

Abstract

A seeding concept was successfully applied for water treatment application, in particular to phosphate removal from wastewater. Here, several different seeding materials based on hydroxylapatite and fluoroapatite were synthesized and the P-removal capabilities were tested in a test water system. Besides high chemical stability, the fluoroapatite seeding material successfully and repeatedly removes >95% of phosphorous from the test water. A small pilot test was carried out, showing that also in continuous operation the seeds have high removal capacity of >90%.

Keywords:

• Seeding
• Water treatment
• Phosphorous removal
• P recovery
• Hydroxylapatite
• Fluoroapatite
• Accelerated crystallization

Notes

Presented at the Conference on Desalination for the Environment: Clean Water and Energy 11–15 May 2014, Limassol, Cyprus