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DOI : 10.17640/KSWST.2015.23.5.51 ,    Vol.23, No.5, 51 ~ 58, 2015
Title
Phosphorus Removal from Reject Water of Municipal Wastewater Treatment Plant Using Thickener Sludge Generated During the Drinking Water Treatment Process
서정인 Jung In Suh
Abstract
This study aims to investigate the effectiveness of thickener sludge generated during the drinking water treatment process for adsorption of phosphorus of supernatant (rejecter water) from 2nd anaerobic digestion tank. Experiments have demonstrated that about 82% phosphorus reduction was confirmed in the rejecter water through the adsorption of phosphorus by aluminum in the thickener sludge in mix ratio of 2:1(volume basis) for the rejecter water and thickener sludge. During the adsorption process of phosphorus, the decrease of phosphorus concentration in the rejecter water accompanied with an increase in pH and sulfate concentration suggests that phosphate replaced the functional groups from the thickener sludge which infers that ligand exchange is the dominating mechanism for phosphate removal.
Key Words
Reject water, Phosphorus removal, Thickener sludge, Sulfate, Aluminum
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