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Capital and Operating Costs of Full-Scale Fecal Sludge Management and Wastewater Treatment Systems in Dakar, Senegal
[Image: see text] A financial comparison of a parallel sewer based (SB) system with activated sludge, and a fecal sludge management (FSM) system with onsite septic tanks, collection and transport (C&T) trucks, and drying beds was conducted. The annualized capital for the SB ($42.66 capita(–1) ye...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American
Chemical Society
2012
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3317593/ https://www.ncbi.nlm.nih.gov/pubmed/22413875 http://dx.doi.org/10.1021/es2045234 |
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author | Dodane, Pierre-Henri Mbéguéré, Mbaye Sow, Ousmane Strande, Linda |
author_facet | Dodane, Pierre-Henri Mbéguéré, Mbaye Sow, Ousmane Strande, Linda |
author_sort | Dodane, Pierre-Henri |
collection | PubMed |
description | [Image: see text] A financial comparison of a parallel sewer based (SB) system with activated sludge, and a fecal sludge management (FSM) system with onsite septic tanks, collection and transport (C&T) trucks, and drying beds was conducted. The annualized capital for the SB ($42.66 capita(–1) year(–1)) was ten times higher than the FSM ($4.05 capita(–1) year(–1)), the annual operating cost for the SB ($11.98 capita(–1) year(–1)) was 1.5 times higher than the FSM ($7.58 capita(–1) year(–1)), and the combined capital and operating for the SB ($54.64 capita(–1) year(–1)) was five times higher than FSM ($11.63 capita(–1) year(–1)). In Dakar, costs for SB are almost entirely borne by the sanitation utility, with only 6% of the annualized cost borne by users of the system. In addition to costing less overall, FSM operates with a different business model, with costs spread among households, private companies, and the utility. Hence, SB was 40 times more expensive to implement for the utility than FSM. However, the majority of FSM costs are borne at the household level and are inequitable. The results of the study illustrate that in low-income countries, vast improvements in sanitation can be affordable when employing FSM, whereas SB systems are prohibitively expensive. |
format | Online Article Text |
id | pubmed-3317593 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | American
Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-33175932012-04-03 Capital and Operating Costs of Full-Scale Fecal Sludge Management and Wastewater Treatment Systems in Dakar, Senegal Dodane, Pierre-Henri Mbéguéré, Mbaye Sow, Ousmane Strande, Linda Environ Sci Technol [Image: see text] A financial comparison of a parallel sewer based (SB) system with activated sludge, and a fecal sludge management (FSM) system with onsite septic tanks, collection and transport (C&T) trucks, and drying beds was conducted. The annualized capital for the SB ($42.66 capita(–1) year(–1)) was ten times higher than the FSM ($4.05 capita(–1) year(–1)), the annual operating cost for the SB ($11.98 capita(–1) year(–1)) was 1.5 times higher than the FSM ($7.58 capita(–1) year(–1)), and the combined capital and operating for the SB ($54.64 capita(–1) year(–1)) was five times higher than FSM ($11.63 capita(–1) year(–1)). In Dakar, costs for SB are almost entirely borne by the sanitation utility, with only 6% of the annualized cost borne by users of the system. In addition to costing less overall, FSM operates with a different business model, with costs spread among households, private companies, and the utility. Hence, SB was 40 times more expensive to implement for the utility than FSM. However, the majority of FSM costs are borne at the household level and are inequitable. The results of the study illustrate that in low-income countries, vast improvements in sanitation can be affordable when employing FSM, whereas SB systems are prohibitively expensive. American Chemical Society 2012-03-13 2012-04-03 /pmc/articles/PMC3317593/ /pubmed/22413875 http://dx.doi.org/10.1021/es2045234 Text en Copyright © 2012 American Chemical Society http://pubs.acs.org This is an open-access article distributed under the ACS AuthorChoice Terms & Conditions. Any use of this article, must conform to the terms of that license which are available at http://pubs.acs.org. |
spellingShingle | Dodane, Pierre-Henri Mbéguéré, Mbaye Sow, Ousmane Strande, Linda Capital and Operating Costs of Full-Scale Fecal Sludge Management and Wastewater Treatment Systems in Dakar, Senegal |
title | Capital and Operating
Costs of Full-Scale Fecal Sludge
Management and Wastewater Treatment Systems in Dakar, Senegal |
title_full | Capital and Operating
Costs of Full-Scale Fecal Sludge
Management and Wastewater Treatment Systems in Dakar, Senegal |
title_fullStr | Capital and Operating
Costs of Full-Scale Fecal Sludge
Management and Wastewater Treatment Systems in Dakar, Senegal |
title_full_unstemmed | Capital and Operating
Costs of Full-Scale Fecal Sludge
Management and Wastewater Treatment Systems in Dakar, Senegal |
title_short | Capital and Operating
Costs of Full-Scale Fecal Sludge
Management and Wastewater Treatment Systems in Dakar, Senegal |
title_sort | capital and operating
costs of full-scale fecal sludge
management and wastewater treatment systems in dakar, senegal |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3317593/ https://www.ncbi.nlm.nih.gov/pubmed/22413875 http://dx.doi.org/10.1021/es2045234 |
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