Intensifying rehabilitation of combined sewer systems using trenchless technology in combination with low impact development and green infrastructure

Throughout Europe, there is a considerable need for investment in the upgrade of sewer systems – due to three main factors: ageing infrastructure, climate change and urban population growth. The need for investments is expected to grow significantly in the years ahead. Trenchless rehabilitation (no-...

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Autores principales:	J. Kvitsjøen, K. H. Paus, J. T. Bjerkholt, T. Fergus, O. Lindholm
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	cross-sectoral collaboration green infrastructure (gi) integrated stormwater management intensified renewal of combined sewer systems low impact development (lid) no-dig Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/2e418e93959247c9a393b17e13779dee
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spelling	oai:doaj.org-article:2e418e93959247c9a393b17e13779dee2021-11-06T11:09:46ZIntensifying rehabilitation of combined sewer systems using trenchless technology in combination with low impact development and green infrastructure0273-12231996-973210.2166/wst.2021.198https://doaj.org/article/2e418e93959247c9a393b17e13779dee2021-06-01T00:00:00Zhttp://wst.iwaponline.com/content/83/12/2947https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Throughout Europe, there is a considerable need for investment in the upgrade of sewer systems – due to three main factors: ageing infrastructure, climate change and urban population growth. The need for investments is expected to grow significantly in the years ahead. Trenchless rehabilitation (no-dig) of sewer pipelines is a cost-efficient and environmental friendly method for upgrading existing pipelines with sufficient capacity. This study examines the possibility of applying no-dig to combined sewer systems (CS) with insufficient capacity. In this study, a concept assessment methodology that combines the analytical approaches from stormwater and sewer system assessments is presented. The methodology was tested on a case area that was part of an environmental project in Oslo, Norway. Three alternative concepts were examined; A0: no-dig and low impact development (LID), A1: no-dig, LID and green infrastructure (GI), and A2: CS up-sizing using open-cut methods. The study concludes that CS with insufficient capacity can be rehabilitated using no-dig if LID and GI. The combination of no-dig and LID reduces costs considerably but does involve the risk of damages from uncontrolled surface runoff. The main risk-reduction measure is the development of GI as an integrated stormwater management system that requires cross-sector collaboration within municipalities. HIGHLIGHTS Trenchless rehabilitation of combined sewer systems (CS) in combination with low impact development (LID) can give a 60–90% cost reduction per meter compared to open-cut methods.; An integrated stormwater management system (ISMS), including green infrastructure, should be implemented to avoid damage from uncontrolled stormwater runoff from LID.; Cross-sector collaboration can contribute to intensifying rehabilitation of CS.;J. KvitsjøenK. H. PausJ. T. BjerkholtT. FergusO. LindholmIWA Publishingarticlecross-sectoral collaborationgreen infrastructure (gi)integrated stormwater managementintensified renewal of combined sewer systemslow impact development (lid)no-digEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 12, Pp 2947-2962 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cross-sectoral collaboration green infrastructure (gi) integrated stormwater management intensified renewal of combined sewer systems low impact development (lid) no-dig Environmental technology. Sanitary engineering TD1-1066
spellingShingle	cross-sectoral collaboration green infrastructure (gi) integrated stormwater management intensified renewal of combined sewer systems low impact development (lid) no-dig Environmental technology. Sanitary engineering TD1-1066 J. Kvitsjøen K. H. Paus J. T. Bjerkholt T. Fergus O. Lindholm Intensifying rehabilitation of combined sewer systems using trenchless technology in combination with low impact development and green infrastructure
description	Throughout Europe, there is a considerable need for investment in the upgrade of sewer systems – due to three main factors: ageing infrastructure, climate change and urban population growth. The need for investments is expected to grow significantly in the years ahead. Trenchless rehabilitation (no-dig) of sewer pipelines is a cost-efficient and environmental friendly method for upgrading existing pipelines with sufficient capacity. This study examines the possibility of applying no-dig to combined sewer systems (CS) with insufficient capacity. In this study, a concept assessment methodology that combines the analytical approaches from stormwater and sewer system assessments is presented. The methodology was tested on a case area that was part of an environmental project in Oslo, Norway. Three alternative concepts were examined; A0: no-dig and low impact development (LID), A1: no-dig, LID and green infrastructure (GI), and A2: CS up-sizing using open-cut methods. The study concludes that CS with insufficient capacity can be rehabilitated using no-dig if LID and GI. The combination of no-dig and LID reduces costs considerably but does involve the risk of damages from uncontrolled surface runoff. The main risk-reduction measure is the development of GI as an integrated stormwater management system that requires cross-sector collaboration within municipalities. HIGHLIGHTS Trenchless rehabilitation of combined sewer systems (CS) in combination with low impact development (LID) can give a 60–90% cost reduction per meter compared to open-cut methods.; An integrated stormwater management system (ISMS), including green infrastructure, should be implemented to avoid damage from uncontrolled stormwater runoff from LID.; Cross-sector collaboration can contribute to intensifying rehabilitation of CS.;
format	article
author	J. Kvitsjøen K. H. Paus J. T. Bjerkholt T. Fergus O. Lindholm
author_facet	J. Kvitsjøen K. H. Paus J. T. Bjerkholt T. Fergus O. Lindholm
author_sort	J. Kvitsjøen
title	Intensifying rehabilitation of combined sewer systems using trenchless technology in combination with low impact development and green infrastructure
title_short	Intensifying rehabilitation of combined sewer systems using trenchless technology in combination with low impact development and green infrastructure
title_full	Intensifying rehabilitation of combined sewer systems using trenchless technology in combination with low impact development and green infrastructure
title_fullStr	Intensifying rehabilitation of combined sewer systems using trenchless technology in combination with low impact development and green infrastructure
title_full_unstemmed	Intensifying rehabilitation of combined sewer systems using trenchless technology in combination with low impact development and green infrastructure
title_sort	intensifying rehabilitation of combined sewer systems using trenchless technology in combination with low impact development and green infrastructure
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/2e418e93959247c9a393b17e13779dee
work_keys_str_mv	AT jkvitsjøen intensifyingrehabilitationofcombinedsewersystemsusingtrenchlesstechnologyincombinationwithlowimpactdevelopmentandgreeninfrastructure AT khpaus intensifyingrehabilitationofcombinedsewersystemsusingtrenchlesstechnologyincombinationwithlowimpactdevelopmentandgreeninfrastructure AT jtbjerkholt intensifyingrehabilitationofcombinedsewersystemsusingtrenchlesstechnologyincombinationwithlowimpactdevelopmentandgreeninfrastructure AT tfergus intensifyingrehabilitationofcombinedsewersystemsusingtrenchlesstechnologyincombinationwithlowimpactdevelopmentandgreeninfrastructure AT olindholm intensifyingrehabilitationofcombinedsewersystemsusingtrenchlesstechnologyincombinationwithlowimpactdevelopmentandgreeninfrastructure
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Intensifying rehabilitation of combined sewer systems using trenchless technology in combination with low impact development and green infrastructure

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