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Hantering av länsvatten i förorenade områden: - en studie om sex efterbehandlingsobjekt i Sverige 2006-2012
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2013 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The purpose of this study was to investigate how objects handled occurring bilge water, focusing on emission requirements, water treatment technologies, potential problems and opportunities for improvement. The limits applied to sites contaminated with arsenic and polycyclic aromatic hydrocarbons (PAH’s). The method is a comparative case study of objects with geographic distribution from Swedish EPA’s list of contaminated sites in 2009 and 2010 or recommendations from people in the industry. Literature and reports from the EPA and public documents such as main and final reports were the basis in the study. When it comes to emission requirements conditions such as pollutant hazard, soil material and dilution potential was crucial. High emissions require quality water treatment design which in many respects resembled the facilities that are available for industrial and municipal wastewater. Some form of sedimentation facility (pond or container), sand filters, chemical treatment steps, pH adjustment and charcoal filters were the rule rather than the exception. The handling of bilge water on-site was mobile and relatively small. There were minor problems with clogging of filters, freezing equipment, heavy rain, snow melting and suspended solids. A common problem was that both pollution and bilge water increased during excavation work. This in turn led to the improved water treatment, which costs time and money. There are many areas for improvement for example, more detailed studies of the initial stage in producing emission requirements and design of the water treatment. Closer collaboration would help those involved and reduce costs and contribute to a more efficient process.

Place, publisher, year, edition, pages
2013. , 37 p.
Keyword [en]
bilge water, contaminated sites, excavation, final reports and metrics.
National Category
Natural Sciences
URN: urn:nbn:se:umu:diva-76139OAI: diva2:635539
Subject / course
Examensarbete i miljö och hälsoskydd
Educational program
Bachelor of Science in Environmental Health
Available from: 2013-11-07 Created: 2013-07-04 Last updated: 2013-11-07Bibliographically approved

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ReferencesLink to record
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