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
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
Müseler, D.L. and Schönfeldt, H.C. 2006. The nutritional content of the Marama Bean (Tylosema esculentum), an underutilised legume from southern Africa. Agricola, 16: 7-13
  » More info & related results
2006Ministry of Agriculture, Water and ForestryJournal Article338 kb pdf
Preview
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
Cowling, R.M., Dlamini, T.S. and Stock, W.D. 1999. Plant Induced Fertile Islands as Possible Indicators of Desertification in a Succulent Desert Ecosystem in Northern Namaqualand, South Africa. Plant Ecology, 142(1/2 The Plant Ecology of Namaqualand, South Africa (Jun., 1999)): 161-167
  » More info & related results
1999DRFN 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 Rural Development, 2000. Socio-economics and financial issues: Theme report Namibia Water Resources Management Review, Windhoek, Namibia, 1-123 pp
  » More info & related results
2000DRFN DLIBReport33.78 mb pdf
Preview
IAEA. 2001. Isotope techniques in water resource investigations in arid and semi-arid regions
  » More info & related results
2001 Report
Robinson, M.D. and Barrows, C.W. 2013. Namibian and North American sand-diving lizards. Journal of Arid Environments, 93: 116–125
  » More info & related results
2013 Journal Article
Madoqua, Volume 16, No. 1. Journal of Arid Zone Biology and Nature Conservation Research. Published by the Department of Agriculture and Nature Conservation, South West Africa/Namibia
  » More info & related results
1989 Journal Article3.23 mb 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
Fourie, M.L. 1990. Die gebruik van landsat beelde as hulpmiddel in herwinningsbeplanning. Agricola, 8: 35-37
  » More info & related results
1990Ministry of Agriculture, Water and ForestryJournal Article610 kb pdf
Preview
Deffner, J. and Kluge, T. 2013. Participatory implementation of sanitation infrastructure in urban areas of north-central Namibia. WHOCC Newsletter, 21: 1–6
  » More info & related results
2013 Journal Article5.48 mb pdf
Preview
Röhrig, J. and Werner, W. 2011. Policy Framework for Small-Scale Gardening. Institute for Social-Ecological Research (ISOE). CuveWaters Papers, 8
  » More info & related results
2011 Report1.42 mb pdf
Preview
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
Loope, L.L. and Sanchez, P.G. 1988. Biological invasions of arid land nature reserves. Biological Conservation, 44(1–2): 95–118
  » More info & related results
1988 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
Bethune, S., Amakali, M. and Roberts, K. 2005. Review of Namibian legislation and policies pertinent to environmental flows. Physics and Chemistry of the Earth, Parts A/B/C, 30(11–16): 894–902
  » More info & related results
2005 Journal Article
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
Beyer, M. 2013. Certification of Protected Areas (CERPA): An Evaluation of international markets and their socio‐economic implications using the example of wetlands in Sub-Saharan Africa - Results from the sub-project 'Hydrology and Water Resource Management'
  » More info & related results
2013 Report8.63 mb pdf
Preview
Lohmann, D. 2012. Sustainable management of semi-arid African savannas under environmental and political change. Ph.D. Thesis. Mathematisch-Naturwissenschaftlichen Fakultät der Universität Potsdam
  » More info & related results
2012 Thesis2.87 mb pdf
Preview
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
Beyer, M., Koeniger, P., Gaj, M., Hamutoko, J.T., Wanke, H. and Himmelsbach, T. 2016. A deuterium-based labeling technique for the investigation of rooting depths, water uptake dynamics and unsaturated zone water transport in semiarid environments. Journal of Hydrology, 533: 627–643
  » More info & related results
2015 Journal Article
Lück, A.H. 1999. Water management planning in arid regions of Southwest Africa - supply problems and future prospects in the catchment area of the Omaruru River, Namibia. Natural Resources and Development, 49/50: 64-80
  » More info & related results
1999DRFN DLIBJournal Article5.06 mb pdf
Preview
Stengel, H.W. 1962. Flüsse und Trockenflüsse in Südwestafrika und ihre Nutzung für die Wirtschaft des Landes
  » More info & related results
1962DRFN DLIBReport27.48 mb pdf
Preview
Dausab, F., Francis, G., Johr, G., Kambatuku, J.R., Molapo, M., Shanyengana, S.E. and Swartz, S. 1995. Water usage patterns in the Kuiseb catchment area (with emphasis on sustainable use). Occasional Paper, No. 1
  » More info & related results
1995DRFN DLIBReport39.98 mb pdf
Preview
Floodwater recharge of alluvial aquifers in dryland environments, Specific targeted research or innovation project, Annex 1 - "description of work"
  » More info & related results
2004DRFN DLIBReport44.43 mb pdf
Preview
Kaiser, E. and Beetz, W. 1919. Die Wassererschließung in der südlichen Namib Südwestafrikas. Zeitschrift für praktische Geologie, 11/12: 165-186
  » More info & related results
1919DRFN DLIBJournal Article14.95 mb pdf
Preview
Heyns, P.S.V.H. 1991. Guidelines for the utilisation of water resources and protection of wetlands in Namibia. Madoqua, 17(2): 249-251
  » More info & related results
1991 Journal Article259 kb pdf
Preview
DWA. 1991. Perspective on Water Affairs. Department of Water Affairs, Windhoek
  » More info & related results
1991 Report2.79 mb pdf
Preview
Andersen, H., Cermak, J., Solodovnik, I., Lelli, L. and Vogt, R. 2018. Spatiotemporal dynamics of fog and low clouds in the Namib unveiled with ground and space-based observations. Atmospheric Chemistry and Physic, 10.5194/acp-2018-1268
  » More info & related results
2018 Journal Article1.38 mb pdf
Preview

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