Dagnachew Adugna^1,2*, Larissa Larsen², Brook Lemma³, Geremew Sahilu⁴

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¹ Ethiopian institute of Architecture, Building Construction and City Development, Addis Ababa University, Addis Ababa, Ethiopia.
² Taubman College of Architecture and Urban Planning, University of Michigan, Ann Arbor, Michigan, USA.
³ College of Natural Science, Addis Ababa University, Addis Ababa, Ethiopia.
⁴ Institute of Water Resources, Addis Ababa University, Addis Ababa, Ethiopia.
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Abstract: Urbanization in developing countries often negatively impacts water re-sources by polluting surface waters. Addis Ababa, Ethiopia, is currently experiencing rapid urbanization accompanied by significant water shortages, unmanaged stormwater, and increasing river water pollution. To supplement the need for non-potable water and address stormwater runoff pollution, we constructed a low cost stormwater filtration system. The filtration system is comprised of a sedimentation area followed by three gravel grain sizes arranged horizontally from coarse to medium to fine filter media. We compared the quality of pretreatment water with post-treatment water by measuring physicochemical parameters, heavy metals and nutrients. We found that the filtration system reduced turbidity by 87%, TSS by 80%, Cu by 87% and Zn by 90%. Further, it positively increased the concentration of DO by 42%. However, the filtration system did not remove nitrates and nitrites. Implementing this system at outfalls in the rapidly expanding condominium housing areas can increase residents’ supply of non-potable water and reduce the amount of polluted stormwater entering nearby streams and rivers.

Keywords: Low Cost, Stormwater, Filtration, Addis Ababa, Water Quality, Performance Test

Cite this paper: Adugna, D. , Larsen, L. , Lemma, B. and Sahilu, G. (2017) Low-Cost Stormwater Filtration System to Improve Urban Water Quality: The Case of Addis Ababa, Ethiopia. Journal of Water Resource and Protection, 9, 692-705. doi: 10.4236/jwarp.2017.96046.

References

[1]   Ouyang, T., Zhu, Z. and Kuang, Y. (2006) Assessing Impact of Urbanization on River Water Quality in the Pearl River Delta Economic Zone, China. Environmental Monitoring and Assessment, 120, 313-325.
https://doi.org/10.1007/s10661-005-9064-x

[2]   Alemayehu, T. (2001) The Impact of Uncontrolled Waste Disposal on Surface Water Quality in Addis Ababa, Ethiopia. Ethiopian Journal of Science, 24, 93-104.

[3]   Pitt, R., Chen, S.E., Clark, S.E., Swenson, J. and Ong, C.K. (2008) Compaction’s Impacts on Urban Storm-Water Infiltration. Journal of Irrigation and Drainage Engineering, 134, 652-658.
https://doi.org/10.1061/(ASCE)0733-9437(2008)134:5(652)

[4]   Holman-Dodds, J.K., Bradley, A.A. and Potter, K.W. (2007) Evaluation of Hydrologic Benefits of Infiltration Based Urban Storm Water Management. Journal of the American Water Resources Association, 39, 205-215.
https://doi.org/10.1111/j.1752-1688.2003.tb01572.x

[5]   Mazhindu, E., Gumbo, T. and Gondo, T. (2010) Living with Environmental Health Risks—The Case of Addis Ababa. Ecohydrology & Hydrobiology, 10, 281-286.
https://doi.org/10.2478/v10104-011-0026-3

[6]   Haregewoin, Y.M. (2007) Integrated Housing Development Programs for Urban Poverty Alleviation and Sustainable Urbanization: The Case of Addis Ababa. ENHR International Conference on Sustainable Urban Areas, Institute for Housing and Urban Development Studies (IHS), Rotterdam.

[7]   CSA (2008) Summary and Statistical Report of the 2007 Population and Housing Census. Addis Ababa, Ethiopia.

[8]   AAWSA (2011) Business Plan from 2011-2020, Final Report. Addis Ababa, Ethiopia.

[9]   National Metrology Agency (2016) Rainfall data of Addis Ababa from 2000 to 2015. Addis Ababa, Ethiopia.

[10]   Belete, D.A. (2011) Road and Urban Storm Water Drainage Network Integration in Addis Ababa: Addis Ketema Sub-City. Journal of Engineering and Technology Research, 3, 217-225.

[11]   Prabu, P.C. (2009) Impact of Heavy Metal Contamination of Akaki River of Ethiopia on Soil and Metal Toxicity on Cultivated Vegetable Crops. Electronic Journal of Environmental, Agricultural & Food Chemistry, 8, 818-827.

[12]   Birch, G.F., Fazeli, M.S. and Matthai, C. (2005) Efficiency of an Infiltration Basin in Removing Contaminants from Urban Stormwater. Environmental Monitoring and Assessment, 101, 23-38.

[13]   Siriwardene, N.R., Deletic, A. and Fletcher, T.D. (2007) Clogging of Stormwater Gravel Infiltration Systems and Filters: Insights from a Laboratory Study. Water Research, 41, 1433-1440.
https://doi.org/10.1016/j.watres.2006.12.040

[14]   Genc-Fuhrman, H., Mikkelsen, P.S. and Ledin, A. (2007) Simultaneous Removal of As, Cd, Cr, Cu, Ni and Zn from Stormwater: Experimental Comparison of 11 Different Sorbents. Water Research, 41, 591-602.
https://doi.org/10.1016/j.watres.2006.10.024

[15]   Davis, A.P. (2005) Green Engineering Principles Promote Low-Impact Development. Environmental Science & Technology, 39, 338A-344A.
https://doi.org/10.1021/es053327e

[16]   Wong, T.H. (2006) Australian Runoff Quality: A Guide to Water Sensitive Urban Design.

[17]   Henderson, C., Greenway, M. and Phillips, I. (2007) Removal of Dissolved Nitrogen, Phosphorus and Carbon from Stormwater by Biofiltration Mesocosms. Water Science and Technology, 55, 183-191.
https://doi.org/10.2166/wst.2007.108

[18]   Davis, A.P., Shokouhian, M., Sharma, H. and Minami, C. (2001) Laboratory Study of Biological Retention for Urban Stormwater Management. Water Environment Research, 73, 5-14.
https://doi.org/10.2175/106143001X138624

[19]   Zaman, S., Yeasmin, S., Inatsu, Y., Ananchaipattana, C. and Bari, M.L. (2014) Low-Cost Sustainable Technologies for the Production of Clean Drinking Water—A Review. Journal of Environmental Protection, 5, 42.
https://doi.org/10.4236/jep.2014.51006

[20]   Nassar, A.M. and Hajjaj, K. (2013) Purification of Stormwater Using Sand Filter. Journal of Water Resource and Protection, 5, 1007.
https://doi.org/10.4236/jwarp.2013.511105

[21]   Rowe, D.R. and Abdel-Magid, I.M. (1995) Handbook of Wastewater Reclamation and Reuse. CRC Press, Boca Raton, Florida.

[22]   Collins, M.R., Eighmy, T.T., Fenstermacher Jr., J.M. and Spanos, S.K. (1992) Removing Natural Organic Matter by Conventional Slow Sand Filtration. Journal (American Water Works Association), 80-90.

[23]   Adugna, A.T., Andrianisa, H.A., Konate, Y., Ndiaye, A. and Maiga, A.H. (2015) Performance Comparison of Sand and Fine Sawdust Vermifilters in Treating Concentrated Grey Water for Urban Poor. Environmental Technology, 36, 2763-2769.
https://doi.org/10.1080/09593330.2015.1046951

[24]   Barbosa, A.E., Fernandes, J.N. and David, L.M. (2012) Key Issues for Sustainable Urban Stormwater Management. Water Research, 46, 6787-6798.
https://doi.org/10.1016/j.watres.2012.05.029

[25]   Flint, K.R. and Davis, A.P. (2007) Pollutant Mass Flushing Characterization of Highway Stormwater Runoff from an Ultra-Urban Area. Journal of Environmental Engineering, 133, 616-626.
https://doi.org/10.1061/(ASCE)0733-9372(2007)133:6(616)

[26]   Gobel, P., Dierkes, C. and Coldewey, W.G. (2007) Storm Water Runoff Concentration Matrix for Urban Areas. Journal of Contaminant Hydrology, 91, 26-42.
https://doi.org/10.1016/j.jconhyd.2006.08.008

[27]   Kim, G., Yur, J. and Kim, J. (2007) Diffuse Pollution Loading from Urban Stormwater Runoff in Daejeon City, Korea. Journal of Environmental Management, 85, 9-16.
https://doi.org/10.1016/j.jenvman.2006.07.009

[28]   Kao, C.M., Wang, J.Y., Lee, H.Y. and Wen, C.K. (2001) Application of a Constructed Wetland for Non-Point Source Pollution Control. Water Science and Technology, 44, 585-590.

[29]   Scholes, L., Revitt, D.M. and Ellis, J.B. (2008) A Systematic Approach for the Comparative Assessment of Stormwater Pollutant Removal Potentials. Journal of Environmental Management, 88, 467-478.
https://doi.org/10.1016/j.jenvman.2007.03.003

[30]   Birch, G.F., Matthai, C., Fazeli, M.S. and Suh, J.Y. (2004) Efficiency of a Constructed Wetland in removing Contaminants from Stormwater. Wetlands, 24, 459-466.
https://doi.org/10.1672/0277-5212(2004)024[0459:EOACWI]2.0.CO;2

[31]   Aziz, H.A., Adlan, M.N. and Ariffin, K.S. (2008) Heavy Metals Removal from Water in Malaysia. Bioresource Technology, 99, 1578-1583.
https://doi.org/10.1016/j.biortech.2007.04.007

[32]   Vymazal, J. (2002) The Use of Sub-Surface Constructed Wetlands for Wastewater Treatment in the Czech Republic: 10 Years Experience. Ecological Engineering, 18, 633-646.
https://doi.org/10.1016/S0925-8574(02)00025-3