Impact of temperature on chlorination strategies for mussel control at water treatment plants

Drinking water treatment plants in the Great Lakes often protect their intake structures against dreissenid biofouling by prechlorinating when water temperatures exceed 12 °C. This temperature threshold is based on the reproduction characteristics of zebra mussels. However, in recent years, zebra mu...

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Autores principales:	Carlos Alonzo-Moya, Ian Lake-Thompson, Alonso Hurtado, Ron Hofmann
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	prechlorination quagga mussels temperature thresholds zebra mussels Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/d3277ba4c69c49da80bbba06f5e6a03a
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id	oai:doaj.org-article:d3277ba4c69c49da80bbba06f5e6a03a
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spelling	oai:doaj.org-article:d3277ba4c69c49da80bbba06f5e6a03a2021-11-05T17:08:37ZImpact of temperature on chlorination strategies for mussel control at water treatment plants2709-80282709-803610.2166/aqua.2021.124https://doaj.org/article/d3277ba4c69c49da80bbba06f5e6a03a2021-06-01T00:00:00Zhttp://aqua.iwaponline.com/content/70/4/537https://doaj.org/toc/2709-8028https://doaj.org/toc/2709-8036Drinking water treatment plants in the Great Lakes often protect their intake structures against dreissenid biofouling by prechlorinating when water temperatures exceed 12 °C. This temperature threshold is based on the reproduction characteristics of zebra mussels. However, in recent years, zebra mussels have largely given way to quagga mussels in the region. These mussels reportedly reproduce at temperatures as low as 5 °C. The objective of this study was to determine if the current 12 °C trigger point for prechlorination remains appropriate. A 3-year monitoring program using bioboxes recorded mussel veliger concentrations and settlement potential in water drawn from the intakes of three drinking water treatment plants on Lake Ontario. Water temperature was a poor predictor of veliger presence and settlement. Reproduction and settlement were observed outside of the traditional temperature thresholds. Furthermore, no relationship was found between the number of veligers in the water column and those settling, suggesting that there are complex environmental factors that influence mussel activity. Nevertheless, it was observed that settlement occurred consistently between the months of July and November in the 3 years of the study. Therefore, a calendar-based approach to trigger prechlorination, as opposed to a temperature-based approach, is suggested. HIGHLIGHTS Settlement was observed at temperatures <5°C.; Temperature is a poor predictor of mussel veliger densities and settlement rates.; Settlement consistently occurred between the months of July and November.;Carlos Alonzo-MoyaIan Lake-ThompsonAlonso HurtadoRon HofmannIWA Publishingarticleprechlorinationquagga musselstemperature thresholdszebra musselsEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENAqua, Vol 70, Iss 4, Pp 537-549 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	prechlorination quagga mussels temperature thresholds zebra mussels Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	prechlorination quagga mussels temperature thresholds zebra mussels Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Carlos Alonzo-Moya Ian Lake-Thompson Alonso Hurtado Ron Hofmann Impact of temperature on chlorination strategies for mussel control at water treatment plants
description	Drinking water treatment plants in the Great Lakes often protect their intake structures against dreissenid biofouling by prechlorinating when water temperatures exceed 12 °C. This temperature threshold is based on the reproduction characteristics of zebra mussels. However, in recent years, zebra mussels have largely given way to quagga mussels in the region. These mussels reportedly reproduce at temperatures as low as 5 °C. The objective of this study was to determine if the current 12 °C trigger point for prechlorination remains appropriate. A 3-year monitoring program using bioboxes recorded mussel veliger concentrations and settlement potential in water drawn from the intakes of three drinking water treatment plants on Lake Ontario. Water temperature was a poor predictor of veliger presence and settlement. Reproduction and settlement were observed outside of the traditional temperature thresholds. Furthermore, no relationship was found between the number of veligers in the water column and those settling, suggesting that there are complex environmental factors that influence mussel activity. Nevertheless, it was observed that settlement occurred consistently between the months of July and November in the 3 years of the study. Therefore, a calendar-based approach to trigger prechlorination, as opposed to a temperature-based approach, is suggested. HIGHLIGHTS Settlement was observed at temperatures <5°C.; Temperature is a poor predictor of mussel veliger densities and settlement rates.; Settlement consistently occurred between the months of July and November.;
format	article
author	Carlos Alonzo-Moya Ian Lake-Thompson Alonso Hurtado Ron Hofmann
author_facet	Carlos Alonzo-Moya Ian Lake-Thompson Alonso Hurtado Ron Hofmann
author_sort	Carlos Alonzo-Moya
title	Impact of temperature on chlorination strategies for mussel control at water treatment plants
title_short	Impact of temperature on chlorination strategies for mussel control at water treatment plants
title_full	Impact of temperature on chlorination strategies for mussel control at water treatment plants
title_fullStr	Impact of temperature on chlorination strategies for mussel control at water treatment plants
title_full_unstemmed	Impact of temperature on chlorination strategies for mussel control at water treatment plants
title_sort	impact of temperature on chlorination strategies for mussel control at water treatment plants
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/d3277ba4c69c49da80bbba06f5e6a03a
work_keys_str_mv	AT carlosalonzomoya impactoftemperatureonchlorinationstrategiesformusselcontrolatwatertreatmentplants AT ianlakethompson impactoftemperatureonchlorinationstrategiesformusselcontrolatwatertreatmentplants AT alonsohurtado impactoftemperatureonchlorinationstrategiesformusselcontrolatwatertreatmentplants AT ronhofmann impactoftemperatureonchlorinationstrategiesformusselcontrolatwatertreatmentplants
_version_	1718444129694777344

Impact of temperature on chlorination strategies for mussel control at water treatment plants

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