Ozonolysate of excess sludge as a carbon source in an enhanced biological phosphorus removal for low strength wastewater

Title
Ozonolysate of excess sludge as a carbon source in an enhanced biological phosphorus removal for low strength wastewater
Authors
박기영이재우송경근안규홍
Keywords
Intermittently decanted extended aeration (IDEA) process; Carbon source; Enhanced biological phosphorus removal; Ozonolysate; Waste activated sludge
Issue Date
2011-01
Publisher
Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies
Citation
VOL 102, NO 3, 2462-2467
Abstract
Potential use of the municipal sludge ozonolysate as a carbon source was examined for phosphorus removal from low strength wastewater in a modified intermittently decanted extended aeration (IDEA) process. At ozone dosage of 0.2 g O3/g solids, readily biodegradable COD accounted for about 36% of COD from sludge ozonolysate. The denitrification potential of ozonolysate as a carbon source was comparable to that of acetate. Although, the first order constant for phosphorus release with the ozonolysate was half that of acetate, it was much higher than that of wastewater. Continuous operation of the modified IDEA process showed that the removals of nitrogen and phosphorus were simultaneously enhanced by addition of the ozonolysate. Phosphorus release was significantly induced after complete denitrification indicating that phosphorus release was strongly depended on nitrate concentration. Effectiveness of the ozonolysate as a carbon source for EBPR was also confirmed in a track study of the modified IDEA.
URI
http://pubs.kist.re.kr/handle/201004/39042
ISSN
0960-8524
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KIST Publication > Article
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