More information:

Woltersdorf, L., Scheidegger, R., Liehr, S. and Döll, P. 2016. Municipal water reuse for urban agriculture in Namibia: Modeling nutrient and salt flows as impacted by sanitation user behavior. Journal of Environmental Management, 169: 272-284


Description:

Municipal water reuse for urban agriculture in Namibia: Modeling nutrient and salt flows as impacted by sanitation user behavior.

Summary / Notes:

Adequate sanitation, wastewater treatment and irrigation infrastructure often lacks in urban areas of developing countries. While treated, nutrient-rich reuse water is a precious resource for crop production in dry regions, excessive salinity might harm the crops. The aim of this study was to quantify, from a system perspective, the nutrient and salt flows a new infrastructure connecting water supply, sanitation, wastewater treatment and nutrient-rich water reuse for the irrigation of agriculture, from a system perspective. For this, we developed and applied a quantitative assessment method to understand the benefits and to support the management of the new water infrastructure in an urban area in semi-arid Namibia. The nutrient and salt flows, as affected by sanitation user behavior, were quantified by mathematical material flow analysis that accounts for the low availability of suitable and certain data in developing countries, by including data ranges and by assessing the effects of different assumptions in cases. Also the nutrient and leaching requirements of a crop scheme were calculated. We found that, with ideal sanitation use, 100% of nutrients and salts are reclaimed and the slightly saline reuse water is sufficient to fertigate 10 m2/cap/yr (90% uncertainty interval 7–12 m2/cap/yr). However, only 50% of the P contained in human excreta could be finally used for crop nutrition. During the pilot phase fewer sanitation users than expected used slightly more water per capita, used the toilets less frequently and practiced open defecation more frequently. Therefore, it was only possible to reclaim about 85% of nutrients from human excreta, the reuse water was non-saline and contained less nutrient so that the P was the limiting factor for crop fertigation. To reclaim all nutrients from human excreta and fertigate a larger agricultural area, sanitation user behavior needs to be improved. The results and the methodology of this study can be generalized and used worldwide in other semi-arid regions requiring irrigation for agriculture as well as urban areas in developing countries with inadequate sanitation infrastructure. Keywords: Water reuse, Nutrients, Salts, Agriculture, Sanitation, Material flow analysis.

Year: 2016

Type: Journal Article

URL: http://www.sciencedirect.com/science/article/pii/S0301479715304400


Top 50 related results:

You may also be interested in the following items which are on a similar or related topic, listed in order of similarity.

Results per page:

Results: 1 to 50 of 50

To FILTER: Use the pale green row to filter the results on this page. Type in text or select from the year list.

Rows matching filter(s): All
What is this row? 
Data titleYearOriginFile typeDownloadkml/kmz
Strydom, P.J. and Smith, W.A. 1996. The effect of condensed tannins and polyethelene glycol on voluntary intake, nutrient digestability, nitrogen retention and energy partitioning in sheep. Agricola, 9: 67-71
  » More info & related results
1996Ministry of Agriculture, Water and ForestryJournal Article649 kb pdf
Preview
Ashley, C. 1996. Incentives affecting biodiversity conservation and sustainable use: the case of land use options in Namibia. Research Discussion Paper No 13, Directorate of Environmental Affairs, Ministry of Environment and Tourism, Namibia
  » More info & related results
1996Ministry of Environment and TourismResearch Discussion Paper106 kb pdf
Preview
Seely, M., Klintenberg, P., Kruger, A. and von Oertzen, D. 2006. Developing and Communicating Science and Technology Agendas for Sustainable Living on Arid Lands
  » More info & related results
2006DRFN DLIBReport792 kb pdf
Preview
de Bruine, B. and Rukira, L. 1997. Sustainable development of water resources in a semiarid country such as Namibia. Sustainability of Water Resources under Increasing Uncertainty (Proceedings of Rabat Symposium SI, April 1997). IAHS Publ. no. 240, 1997
  » More info & related results
1997 Report336 kb pdf
Preview
Xu, Y. and Beekman, H.E.(Eds). 2003. Groundwater recharge estimation in Southern Africa. UNESCO IHP Series No. 64, UNESCO Paris
  » More info & related results
2003 Report4.97 mb pdf
Preview
Whetstone, G.A. 1972. Adaptation to aridity: Water development in South Africa. JAWRA Journal of the American Water Resources Association, 8(3): 600–607
  » More info & related results
1972 Journal Article
Haufiku, A.T. 2014. Study on domestic water use and water use efficiency: A case for Cuvelai-Etosha Basin. Masters Thesis, Faculty of Natural and Agricultural Science, Centre for Sustainable Agriculture, Rural Development and Extension, Uiversity of Free State
  » More info & related results
2014 Thesis2.72 mb pdf
Preview
Wasmund, N., Struck, U., Hansen, A., Flohr, A., Nausch, G., Grüttmüller, A. and Voss, M. 2015. Missing nitrogen fixation in the Benguela region. Deep Sea Research Part I: Oceanographic Research Papers, 1: 30–41
  » More info & related results
2015 Journal Article
LCE and SCE. 2016. Ministry of Agriculture, Water and Forestry. EoI 1/18/2 – 02/2011. A pre-feasibility study into: The Augmentation of Water Supply to the Central Area of Namibia and the Cuvelai. The Interim Report No. 3 for Part I: The Central Area of Namibia, 21 June 2016
  » More info & related results
2016 Report40.97 mb pdf
Preview
Le Maitre, D.C., Scott, D.F. and Colvin, C. 1999. Review of information on interactions between vegetation and groundwater. Water SA, 25(2), pp 137-152
  » More info & related results
1999 Journal Article
Hughes, D.A. 1995. Monthly rainfall-runoff models applied to arid and semiarid catchments for water resource estimation purposes. Hydrological Sciences Journal, 40(6): 751-769
  » More info & related results
1995 Journal Article
Hughes, D.A. and Metzler, W. 1998. Assessment of three monthly rainfall-runoff models for estimating the water resource yield of semiarid catchments in Namibia. Hydrological Sciences Journal, 43(2): 283-297
  » More info & related results
1998 Journal Article
Klintenberg, P. and Verlinden, A. 2008. Water points and their influence on grazing resources in central northern Namibia. Land Degradation and Development, 19(1): 1-20
  » More info & related results
2008 Journal Article
Hochschild, V., Märker, M., Rodolfi, G. and Staudenrausch, H. 2003. Delineation of erosion classes in semi-arid southern African grasslands using vegetation indices from optical remote sensing data. Hydrological Processes, 17(5): 917-928
  » More info & related results
2003DRFN DLIBJournal Article
Genxu, W. and Guodong, C. 1999. Water resource development and its influence on the environment in arid areas of China - the case of the Hei River basin. Journal of Arid Environments, 43(2): 121-131
  » More info & related results
1999DRFN DLIBJournal Article
Ministry of Agriculture, Water and Forestry. Integrated Water Resources Management (IWRM) - Eiseb-Epukiro River Basin
  » More info & related results
Ministry of Agriculture, Water and ForestryBook, Book Section, Booklet5.6 mb pdf
Preview
Schachtschneider, K. 2001. Water Demand Management and tourism in arid countries – lessons learnt from Namibia. 2nd WARFSA / WaterNet Symposium: Integrated Water Resources Management: Theory, Practice, Cases; Cape Town, 30 – 31 October 2001
  » More info & related results
2001 Presentation168 kb pdf
Preview
Lindsey, P.A. and Skinner, J.D. 2001. Ant composition and activity patterns as determined by pitfall trapping and other methods in three habitats in the semi-arid Karoo. Journal of Arid Environments, 48: 551-568
  » More info & related results
2001 Journal Article251 kb pdf
Preview
Klopatek, J.M. and Stock, W.D. 1994. Partitioning of nutrients in Acanthosicyos horridus, a keystone endemic species in the Namib Desert. Journal of Arid Environments, 26(3): 233–240
  » More info & related results
1994 Journal Article
Brunotte, E., Maurer, B., Fischer, P., Lomax, J. and Sander, H. 2009. A sequence of fluvial and aeolian deposits (desert loess) and palaeosoils covering the last 60 ka in the Opuwo basin (Kaokoland/Kunene Region, Namibia) based on luminescence dating. Quaternary International, 196(1–2): 71–85
  » More info & related results
2009 Journal Article
Webb, J.A. and White, S. 2013. 6.31 Karst in Deserts. In: Reference Module in Earth Systems and Environmental Sciences - Treatise on Geomorphology, Volume 6: Karst Geomorphology, 397–406
  » More info & related results
2013 Book, Book Section, Booklet
Hipondoka, M.H.T., Mauz, B., Kempf, J., Packman, S., Chiverrell, R.C. and Bloemendal, J. 2014. Chronology of sand ridges and the Late Quaternary evolution of the Etosha Pan, Namibia. Geomorphology, 204(1): 553–563
  » More info & related results
2014 Journal Article
Matmon, A., Mushkin, A., Enzel, Y. and Grodek, T. 2013. Erosion of a granite inselberg, Gross Spitzkoppe, Namib Desert. Geomorphology, 201: 52–59
  » More info & related results
2013 Journal Article
Oldeland, J., Dorigo, W., Lieckfeld, L., Lucieer, A. and Jürgens, N. 2010. Combining vegetation indices, constrained ordination and fuzzy classification for mapping semi-natural vegetation units from hyperspectral imagery. Remote Sensing of Environment, 114(6): 1155–1166
  » More info & related results
2010 Journal Article
Mackay, A.W., Davidson, T., Wolski, P., Woodward, S., Mazebedi, R., Masamba, W.R.L. and Todd, M. 2012. Diatom sensitivity to hydrological and nutrient variability in a subtropical, flood-pulse wetland. Ecohydrology, 5(4): 491–502
  » More info & related results
2012 Journal Article
Tredoux, G., van der Merwe, B. and Peters, I. 2009. Artificial recharge of the Windhoek aquifer, Namibia: Water quality considerations. Boletín Geológico y Minero, 120(2): 269-278
  » More info & related results
2009ORASECOMJournal Article1.05 mb pdf
Preview
Van Wyk, B.-E. and Kolberg, H. 2008. A new species of Lotononis section Oxydium (Fabaceae, Crotalarieae). South African Journal of Botany, 74(4): 750–752
  » More info & related results
2008 Journal Article
Hossain, F. and Helao, T. 2008. Local governance and water resource management: experiences from Northern Namibia. Public Administration and Development, 28(3): 200-211
  » More info & related results
2008 Journal Article
Bauer, A.M. and Good, D.A. 1996. Phylogenetic systematics of the day geckos, genus, Rhoptropus (Reptilia: Gekkonidae), of south-western Africa. Journal of Zoology, 238(4): 635–663
  » More info & related results
1996 Journal Article
van Jaarsvel, E. 2000. Welwitschia mirabilis. Veld and Flora, 86: 176-179
  » More info & related results
2000 Journal Article
Wichern, F. and Joergensen, R.G. 2009. Soil Microbial Properties Along a Precipitation Transect in Southern Africa. Arid Land Research and Management, 23(2): 115-126
  » More info & related results
2009 Journal Article
Gess, S.K. and Gess, F.W. 2004. The distributions of the genera of pollen wasps (Hymenoptera: Vespidae: Masarinae) in the semi-arid to arid areas of southern Africa in relation to their requirements for successful nesting. Transactions of the Royal Society of South Africa, 59(2): 59-64
  » More info & related results
2004 Journal Article
Dean, W.R.J. and Williams, J.B. 2004. Adaptations of birds for life in deserts with particular reference to Larks (Alaudidae). Transactions of the Royal Society of South Africa, 59(2): 79-91
  » More info & related results
2004 Journal Article
Arrow, G.J. 1917. III. - Some systematic notes on melolonthine Coleoptera. Annals and Magazine of Natural History: Series 8, 19(109): 59-65
  » More info & related results
1917 Journal Article
Akawa, M.N., Andreas, K.J., Endjala, T.N., Halundonga, A-L., Hamukoshi, E., Iiyambo, D., Mbango, T., Mulonga, S., Muteyauli, P., Nghikembua, M-L., Nkandi, K., Steenkamp, B. and Uazukuani, U. 2002. Water use and environmental conditions along the Etaka canal in north-central Namibia. SDP 10
  » More info & related results
2002 Report880 kb pdf
Preview
Bonyongo, M.C. and Mubyana, T. 2004. Soil nutrients status in vegetation communities of the Okavango Delta floodplains. South African Journal of Science, 100: 337-340
  » More info & related results
2004 Journal Article1.64 mb pdf
Preview
A retrospective assessment of the environmental impacts of emergency borehole supply in the Gam and Khorixas areas of Namibia. Prepared by Environmental and Geographical Science Masters Class, University of Cape Town
  » More info & related results
1997 Report87.73 mb pdf
Preview
Aranibar, J.N., Macko, S.A., Anderson, I.C., Epstein, H.E., Feral, C.J., Hipondoka, M., Potgieter, A. and Shugart, H.H. 2001. Does Nutrient Dynamics Determine C3-C4 Plant Abundance in Southern African Ecosystems? American Geophysical Union, Fall Meeting 2001, abstract #A51A-0023
  » More info & related results
2001 Journal Article
Branch, W.R., Bauer, A.M. and Good, D.A. 1996. A review of the Namaqua gecko, Pachydactylus namaquensis (Reptilia: Gekkonidae) from southern Africa, with the description of two new species. African Zoology, 31(2): 53-69
  » More info & related results
1996 Journal Article1.67 mb pdf
Preview
Swanepoel, W., le Roux, M.M., Wojciechowski, M.F. and van Wyk, A.E. 2015. Oberholzeria (Fabaceae subfam. Faboideae), a New Monotypic Legume Genus from Namibia. PLOS ONE, 10(3): e0122080
  » More info & related results
2015 Journal Article1.57 mb pdf
Preview
Ramond, J-B., Pienaar, A., Armstrong, A., Seely, M. and Cowan, D.A. 2014. Niche-Partitioning of Edaphic Microbial Communities in the Namib Desert Gravel Plain Fairy Circles. PLoS ONE, 9(10): e109539
  » More info & related results
2014 Journal Article765 kb pdf
Preview
Louw, D.C., van der Plas, A.K., Mohrholz, V., Wasmund, N., Junker, T. and Eggert, A. 2016. Seasonal and interannual phytoplankton dynamics and forcing mechanisms in the Northern Benguela upwelling system. Journal of Marine Systems, 157: 124–134
  » More info & related results
2016 Journal Article
van Langenhove, G., de Bruine, B., Rukira, L., and Hatutale, A. 1996. Flow régime changes in Namibian rivers: patterns, effects and possible causes
  » More info & related results
1996DRFN DLIBReport4.6 mb pdf
Preview
Water Resources Management Plan for the Kuiseb Basin - Narrative Reports. Volume 2. Kuiseb Basin Water Resources Management Project, Windhoek
  » More info & related results
2008DRFN DLIBReport40.01 mb pdf
Preview
Werner, W. 2008. Water Resources Management Plan for the Kuiseb Basi - Assignment Execution Report. Kuiseb Basin Water Resources Management Project, Windhoek
  » More info & related results
2008 Report2.85 mb pdf
Preview
Mwazi, F.N. 2017. Optimizing non-flooded landscape units to support maize production in the Zambezi Region, Namibia. PhD Thesis, Degree of Doctor of Philosophy Agriculture (Crop Production), University of Namibia
  » More info & related results
2017 Thesis6.51 mb pdf
Preview
LCE and SCE. 2016. Ministry of Agriculture, Water and Forestry. EoI 1/18/2 – 02/2011. A pre-feasibility study into: The Augmentation of Water Supply to the Central Area of Namibia and the Cuvelai. The Interim Report No. 2 for Part II: The Cuvelai Area of Namibia, 05 September 2016
  » More info & related results
2016 Report28.28 mb pdf
Preview
LCE and SCE. 2014. Ministry of Agriculture, Water and Forestry. EoI 1/18/2 – 02/2011. A pre-feasibility study into: The Augmentation of Water Supply to the Central Area of Namibia and the Cuvelai. The Draft Interim Report No. 1 for Part II: The Cuvelai Area of Namibia, 25 July 2014
  » More info & related results
2014 Report15.88 mb pdf
Preview
SST and SAIEA. 2013. Ministry of Agriculture, Water and Forestry. EoI 1/18/2 – 02/2011. A pre-feasibility study into: The augmentation of water supply to the central area of Namibia and the Cuvelai. Environmental and Social Inception Report: Technical Portion. 30 April 2013
  » More info & related results
2013 Report433 kb pdf
Preview
Eichholz, M. and Quinger, M. The Upper Swakop River Basin – Supplying Namibia's capital Windhoek with water. International Water Association
  » More info & related results
 Report520 kb pdf
Preview

» Links to useful free software for working with shapefiles, kml and kmz files, pdf files and more.