Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2009
Abstract
No abstract has been registered
Authors
Arve Heistad Razak Seidu Andreas Svarstad Flø Adam Paruch Jon Fredrik Hanssen Thor-Axel StenströmAbstract
Tie long-term use of a filter-based, on-site wastewater treatment system increases nutrient discharge to receiving waters and may reduce its hygienic barrier efficiency. The main purpose of this research was to assess the hygienic barrier efficiency and the associated health risks of an on-site system that had exceeded its 5-yr design capacity with respect to phosphorus (P) removal. The system was investigated for bacteria and virus removal and assessed with respect to potential health risks in relation to reuse of effluent for irrigation. The system consists of a septic tank, a pressure-dosed vertical flow biofilter, and an up-flow filter unit with lightweight clay aggregates. The total P concentration in the effluent had increased gradually from initially <0.1 mg P L-1 during the first 2 yr of operation to 1.8 mg P L-1 after 5.3 yr. Escherichia coli was used as an indicator organism for fecal bacteria removal, whereas bacteriophages phi X174 and Salmonella typhimurium phage 28B (S.t. 28B) were used to model enteric virus removal. An overall decrease in E. coli removal occurred from a complete (approximately 5.6 log(10)) reduction during the first 3 yr of operation to 2.6 log(10) reduction. The removal amounts of the bacteriophages phi X174 and S.t. 28B were 3.9 and 3.7 log(10), respectively. Based on removal of S.t. 28B, the risks of rotavirus infection and disease for the investigated scenarios were above the acceptable level of 10(-4) and 10(-3), respectively, as defined by the World Health Organization.
Authors
Adam ParuchAbstract
No abstract has been registered
Authors
Adam ParuchAbstract
No abstract has been registered
Authors
Sekhar Udaya NagothuAbstract
The interdisciplinary study aims to contribute towards an increased knowledge base and dialogue between the stakeholders themselves and between researchers and stakeholders for addressing the impacts of climate change on rice farming in the Cauvery River Basin located in the peninsular part of India.
Abstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Johannes Deelstra Sigrun Hjalmarsdottir Kværnø Kirsti Granlund Antanas Sigitas Sileika Kazimieras Gaigalis Katarina Kyllmar Nils VagstadAbstract
No abstract has been registered
Authors
Nils Vagstad Helen French H.E. Andersen H. Behrendt B. Grizzetti P. Groenendijk A. Lo Porto H. Reisser C. Siderius J. Stromquist J. Hejzlar Johannes DeelstraAbstract
No abstract has been registered
Abstract
The summary of the main findings from the ongoing EU-project STRIVER (2006-2009) will be presented based on experiences from the four case basins: Glomma (Norway), Tagus (Spania and Portugal), Tungabhadra (India) and Sesan (Vietnam and Cambodia) focusing on integrated water resources management.