Variation of Al species during water treatment: correlation with treatment efficiency under varied hydraulic conditions

The concentration of hydrolyzed coagulant ion species is a key factor in determining drinking water treatment efficiency. Direct correlation of water treatment efficiency with changes in species during coagulation has not been addressed. We investigated the correlation under different hydraulic cond...

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Autores principales:	Zhenghua Wang, Wei Huang, Chuang Wang, Xiaoshang Li, Zhaohui He, Andrew Hursthouse, Guocheng Zhu
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	al species hydraulic conditions polyaluminum chloride water treatment efficiency Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/e4b9633aa055436981a0171baf0d5e6d
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spelling	oai:doaj.org-article:e4b9633aa055436981a0171baf0d5e6d2021-11-05T17:17:15ZVariation of Al species during water treatment: correlation with treatment efficiency under varied hydraulic conditions2709-80282709-803610.2166/aqua.2021.144https://doaj.org/article/e4b9633aa055436981a0171baf0d5e6d2021-09-01T00:00:00Zhttp://aqua.iwaponline.com/content/70/6/891https://doaj.org/toc/2709-8028https://doaj.org/toc/2709-8036The concentration of hydrolyzed coagulant ion species is a key factor in determining drinking water treatment efficiency. Direct correlation of water treatment efficiency with changes in species during coagulation has not been addressed. We investigated the correlation under different hydraulic conditions and water treatment efficiencies including changes in removal of turbidity, ultraviolet adsorption at 254 nm (UV254) and dissolved organic carbon (DOC). Results highlighted that Al species (monomeric species as Ala, medium polymeric species as Alb and colloidal species as Alc) behaved differently during coagulation and treatment efficiencies were affected. When varying the mixing speed, the removal of Alc species had a strong negative correlation with water treatment efficiency but under other hydraulic conditions positive correlations were found. The removal of Ala species was positively correlated with water treatment efficiency, but under other hydraulic conditions the low abundance of Ala species meant the correlation was difficult to observe. The Alb species were significantly and positively correlated with water treatment efficiency with the highest correlation coefficient (R2) of 0.87. The correlation of metallic species with removal efficiencies of the DOC and the UV254 produced higher R2 values. Correlation of the rate of removal of Alb species with the removal efficiencies of the DOC or the UV254 was better than for Alc. HIGHLIGHTS Hydrolyzed coagulant ion species is considered as one of key factors in determining drinking water treatment efficiency.; Drinking water treatment efficiency is often correlated with the distribution species in coagulant rather than water.; The variation of the species removal was investigated in the coagulation system.; Under varied hydraulic conditions a positive response in correlation was presented.;Zhenghua WangWei HuangChuang WangXiaoshang LiZhaohui HeAndrew HursthouseGuocheng ZhuIWA Publishingarticleal specieshydraulic conditionspolyaluminum chloridewater treatment efficiencyEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENAqua, Vol 70, Iss 6, Pp 891-900 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	al species hydraulic conditions polyaluminum chloride water treatment efficiency Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	al species hydraulic conditions polyaluminum chloride water treatment efficiency Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Zhenghua Wang Wei Huang Chuang Wang Xiaoshang Li Zhaohui He Andrew Hursthouse Guocheng Zhu Variation of Al species during water treatment: correlation with treatment efficiency under varied hydraulic conditions
description	The concentration of hydrolyzed coagulant ion species is a key factor in determining drinking water treatment efficiency. Direct correlation of water treatment efficiency with changes in species during coagulation has not been addressed. We investigated the correlation under different hydraulic conditions and water treatment efficiencies including changes in removal of turbidity, ultraviolet adsorption at 254 nm (UV254) and dissolved organic carbon (DOC). Results highlighted that Al species (monomeric species as Ala, medium polymeric species as Alb and colloidal species as Alc) behaved differently during coagulation and treatment efficiencies were affected. When varying the mixing speed, the removal of Alc species had a strong negative correlation with water treatment efficiency but under other hydraulic conditions positive correlations were found. The removal of Ala species was positively correlated with water treatment efficiency, but under other hydraulic conditions the low abundance of Ala species meant the correlation was difficult to observe. The Alb species were significantly and positively correlated with water treatment efficiency with the highest correlation coefficient (R2) of 0.87. The correlation of metallic species with removal efficiencies of the DOC and the UV254 produced higher R2 values. Correlation of the rate of removal of Alb species with the removal efficiencies of the DOC or the UV254 was better than for Alc. HIGHLIGHTS Hydrolyzed coagulant ion species is considered as one of key factors in determining drinking water treatment efficiency.; Drinking water treatment efficiency is often correlated with the distribution species in coagulant rather than water.; The variation of the species removal was investigated in the coagulation system.; Under varied hydraulic conditions a positive response in correlation was presented.;
format	article
author	Zhenghua Wang Wei Huang Chuang Wang Xiaoshang Li Zhaohui He Andrew Hursthouse Guocheng Zhu
author_facet	Zhenghua Wang Wei Huang Chuang Wang Xiaoshang Li Zhaohui He Andrew Hursthouse Guocheng Zhu
author_sort	Zhenghua Wang
title	Variation of Al species during water treatment: correlation with treatment efficiency under varied hydraulic conditions
title_short	Variation of Al species during water treatment: correlation with treatment efficiency under varied hydraulic conditions
title_full	Variation of Al species during water treatment: correlation with treatment efficiency under varied hydraulic conditions
title_fullStr	Variation of Al species during water treatment: correlation with treatment efficiency under varied hydraulic conditions
title_full_unstemmed	Variation of Al species during water treatment: correlation with treatment efficiency under varied hydraulic conditions
title_sort	variation of al species during water treatment: correlation with treatment efficiency under varied hydraulic conditions
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/e4b9633aa055436981a0171baf0d5e6d
work_keys_str_mv	AT zhenghuawang variationofalspeciesduringwatertreatmentcorrelationwithtreatmentefficiencyundervariedhydraulicconditions AT weihuang variationofalspeciesduringwatertreatmentcorrelationwithtreatmentefficiencyundervariedhydraulicconditions AT chuangwang variationofalspeciesduringwatertreatmentcorrelationwithtreatmentefficiencyundervariedhydraulicconditions AT xiaoshangli variationofalspeciesduringwatertreatmentcorrelationwithtreatmentefficiencyundervariedhydraulicconditions AT zhaohuihe variationofalspeciesduringwatertreatmentcorrelationwithtreatmentefficiencyundervariedhydraulicconditions AT andrewhursthouse variationofalspeciesduringwatertreatmentcorrelationwithtreatmentefficiencyundervariedhydraulicconditions AT guochengzhu variationofalspeciesduringwatertreatmentcorrelationwithtreatmentefficiencyundervariedhydraulicconditions
_version_	1718444135809024000

Variation of Al species during water treatment: correlation with treatment efficiency under varied hydraulic conditions

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