Comparison of anaerobic phosphorus release from activated sludge with three carbon sources

Three carbon sources, namely sodium acetate, sewage and effluent, were used to simulate the process of phosphorus release in an actual sewage treatment plant, in order to explore the phosphorus release performance of the sludge, the relationship between phosphorus release and chemical oxygen demand...

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Autores principales:	Xiaohu Dai, Zhanbei Gu, Lingling Dai, Changming Shen, Wei Zhou, Jihui Huang, Wei Wang, Zhigang Liu
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	activated sludge anaerobic phosphorus release carbon sources Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/8435fef586ff42caabe2e94b2c721dc1
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spelling	oai:doaj.org-article:8435fef586ff42caabe2e94b2c721dc12021-11-06T10:52:24ZComparison of anaerobic phosphorus release from activated sludge with three carbon sources0273-12231996-973210.2166/wst.2021.047https://doaj.org/article/8435fef586ff42caabe2e94b2c721dc12021-03-01T00:00:00Zhttp://wst.iwaponline.com/content/83/6/1327https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Three carbon sources, namely sodium acetate, sewage and effluent, were used to simulate the process of phosphorus release in an actual sewage treatment plant, in order to explore the phosphorus release performance of the sludge, the relationship between phosphorus release and chemical oxygen demand (COD) in sewage, and the stability of phosphorus-rich sludge. The results showed that the type and concentration of carbon sources had significant effects on the rate of phosphorus release, reaction equilibrium time and phosphorus release amount. When sodium acetate was used as the carbon source, the phosphorus release rate reached 12.54 mg P (g VSS·h)−1, and tended to be stable at 4.0 hours. The phosphorus release amount in the first 2.5 hours accounted for 36.88% of the total phosphorus in the sludge. When sewage was used as the carbon source, the phosphorus release rate did not reach equilibrium even at 5.0 hours, and the phosphorus release amount increased by 1.0 mg L−1 for every 10.5 mg L−1 increase sewage COD within a certain range. When effluent was used as the carbon source, the visual phosphorus release amount was only 0.83 mg L−1 after standing for 24 hours and the actual phosphorus release amount was 17.98 mg L−1. These conclusions can provide technical support for the optimization of phosphorus removal in sewage treatment plants. HIGHLIGHTS The effect of anaerobic phosphorus release from activated sludge with three carbon sources was compared.; A formula was obtained by linear regression for the correlation between COD concentration and phosphorus release amount.; A phosphorus load contribution of 8.38% to the influent was due to the sludge treatment process.; Parameters obtained in the experiments can be used to optimize sewage treatment plant performance.;Xiaohu DaiZhanbei GuLingling DaiChangming ShenWei ZhouJihui HuangWei WangZhigang LiuIWA Publishingarticleactivated sludgeanaerobic phosphorus releasecarbon sourcesEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 6, Pp 1327-1334 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	activated sludge anaerobic phosphorus release carbon sources Environmental technology. Sanitary engineering TD1-1066
spellingShingle	activated sludge anaerobic phosphorus release carbon sources Environmental technology. Sanitary engineering TD1-1066 Xiaohu Dai Zhanbei Gu Lingling Dai Changming Shen Wei Zhou Jihui Huang Wei Wang Zhigang Liu Comparison of anaerobic phosphorus release from activated sludge with three carbon sources
description	Three carbon sources, namely sodium acetate, sewage and effluent, were used to simulate the process of phosphorus release in an actual sewage treatment plant, in order to explore the phosphorus release performance of the sludge, the relationship between phosphorus release and chemical oxygen demand (COD) in sewage, and the stability of phosphorus-rich sludge. The results showed that the type and concentration of carbon sources had significant effects on the rate of phosphorus release, reaction equilibrium time and phosphorus release amount. When sodium acetate was used as the carbon source, the phosphorus release rate reached 12.54 mg P (g VSS·h)−1, and tended to be stable at 4.0 hours. The phosphorus release amount in the first 2.5 hours accounted for 36.88% of the total phosphorus in the sludge. When sewage was used as the carbon source, the phosphorus release rate did not reach equilibrium even at 5.0 hours, and the phosphorus release amount increased by 1.0 mg L−1 for every 10.5 mg L−1 increase sewage COD within a certain range. When effluent was used as the carbon source, the visual phosphorus release amount was only 0.83 mg L−1 after standing for 24 hours and the actual phosphorus release amount was 17.98 mg L−1. These conclusions can provide technical support for the optimization of phosphorus removal in sewage treatment plants. HIGHLIGHTS The effect of anaerobic phosphorus release from activated sludge with three carbon sources was compared.; A formula was obtained by linear regression for the correlation between COD concentration and phosphorus release amount.; A phosphorus load contribution of 8.38% to the influent was due to the sludge treatment process.; Parameters obtained in the experiments can be used to optimize sewage treatment plant performance.;
format	article
author	Xiaohu Dai Zhanbei Gu Lingling Dai Changming Shen Wei Zhou Jihui Huang Wei Wang Zhigang Liu
author_facet	Xiaohu Dai Zhanbei Gu Lingling Dai Changming Shen Wei Zhou Jihui Huang Wei Wang Zhigang Liu
author_sort	Xiaohu Dai
title	Comparison of anaerobic phosphorus release from activated sludge with three carbon sources
title_short	Comparison of anaerobic phosphorus release from activated sludge with three carbon sources
title_full	Comparison of anaerobic phosphorus release from activated sludge with three carbon sources
title_fullStr	Comparison of anaerobic phosphorus release from activated sludge with three carbon sources
title_full_unstemmed	Comparison of anaerobic phosphorus release from activated sludge with three carbon sources
title_sort	comparison of anaerobic phosphorus release from activated sludge with three carbon sources
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/8435fef586ff42caabe2e94b2c721dc1
work_keys_str_mv	AT xiaohudai comparisonofanaerobicphosphorusreleasefromactivatedsludgewiththreecarbonsources AT zhanbeigu comparisonofanaerobicphosphorusreleasefromactivatedsludgewiththreecarbonsources AT linglingdai comparisonofanaerobicphosphorusreleasefromactivatedsludgewiththreecarbonsources AT changmingshen comparisonofanaerobicphosphorusreleasefromactivatedsludgewiththreecarbonsources AT weizhou comparisonofanaerobicphosphorusreleasefromactivatedsludgewiththreecarbonsources AT jihuihuang comparisonofanaerobicphosphorusreleasefromactivatedsludgewiththreecarbonsources AT weiwang comparisonofanaerobicphosphorusreleasefromactivatedsludgewiththreecarbonsources AT zhigangliu comparisonofanaerobicphosphorusreleasefromactivatedsludgewiththreecarbonsources
_version_	1718443742583586816

Comparison of anaerobic phosphorus release from activated sludge with three carbon sources

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