dc.contributor.advisor | McCann, Brian, Dr. | en |
dc.contributor.author | Lyons, P. J. | en |
dc.date.accessioned | 2017-03-21T16:14:04Z | |
dc.date.available | 2017-03-21T16:14:04Z | |
dc.date.issued | 2004 | |
dc.identifier.citation | Lyons, P. J. (2004) Rehabilitation of existing sewerage infrastructure. M. Sc., Institute of Technology, Sligo. | en |
dc.identifier.other | MSc | en |
dc.identifier.uri | https://research.thea.ie/handle/20.500.12065/1528 | |
dc.description.abstract | This dissertation has been produced for the research section of the Environmental
Protection MSc, from Sligo Institute of Technology. The overall objective of the
study was to highlight Infiltration and Exfiltration in existing sewerage
infrastructure, associated problems, investigation techniques, rehabilitation
techniques and a case study.
As part of efficient treatment of sewage, separation of surface water and infiltration
water from sewer networks is advantageous. Therefore, a high priority should be
given to achieving watertight sewers. When sewers are sealed, as well as efficient
treatment, exfiltration (leakage) is reduced which decreases the risk of
groundwater contamination.
Rehabilitation of sewer lines can be used in many cases to achieve water
tightness using trenchless technology, which can avoid construction and
installation works, which would cause inconvenience to local residents and
business people, especially in urban areas.
From investigations undertaken for the purposes of this report, it was found that
the traditional method of installing new sewer networks or replacing existing pipes
with a cut trench system is still the most common form of infrastructure upgrading.
However, some local authorities, together with Civil Engineering Consultants have
started to incorporate sewer rehabilitation as part of their overall designs. The
Castlebar Environs Sewerage Scheme, included an existing sewer rehabilitation
project, as part of the total contract. It was found that when old, damaged or
leaking sewer pipes were rehabilitated it reduced groundwater infiltration, which in
turn reduced the flows into the sewage treatment plant.
This dissertation gives examples of where rehabilitation may be considered, where
it has been used and the advantages associated with his method of maintenance. | en |
dc.format | Pdf | en |
dc.language.iso | en | en |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Seepage. | en |
dc.subject | Sewage disposal plants -- Maintenance and repair. | en |
dc.title | Rehabilitation of existing sewerage infrastructure | en |
dc.type | Master Thesis (taught) | en |
dc.publisher.institution | Institute of Technology, Sligo. | en |
dc.rights.access | Creative Commons Attribution-NonCommercial-NoDerivs | en |
dc.subject.department | Dept of Environmental Science, ITS | en |