Solid waste and septage co-composting as a pathway to cost and resource recovery in Sri Lanka
Due to its low nutrient content, compost from municipal solid waste (MS\I\1 qualifies mostly as a conditioner of soil physical properties than soil fertility. This limits the value proposition of the compost and its potential for cost recovery to maintain the compost stations. One way to enhance the...
| Autores principales: | , , , |
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| Formato: | Conference Paper |
| Lenguaje: | Inglés |
| Publicado: |
2014
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| Acceso en línea: | https://hdl.handle.net/10568/67630 |
| _version_ | 1855531414425960448 |
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| author | Fernando, Sudarshana Drechsel, Pay Jayathilake, Nilanthi Semasinghe, Christina |
| author_browse | Drechsel, Pay Fernando, Sudarshana Jayathilake, Nilanthi Semasinghe, Christina |
| author_facet | Fernando, Sudarshana Drechsel, Pay Jayathilake, Nilanthi Semasinghe, Christina |
| author_sort | Fernando, Sudarshana |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Due to its low nutrient content, compost from municipal solid waste (MS\I\1 qualifies mostly as a conditioner of soil physical properties than soil fertility. This limits the value proposition of the compost and its potential for cost recovery to maintain the compost stations. One way to enhance the compost value is to enrich it with nutrients. Given the increasing attention to fecal sludge (FS) management from septic tanks and latrines, co-composting of both waste streams could be a win-win option to increase the compost nutrient value. To assess the current situation of MSW composting and opportunities and acceptance of co-composting in Sri Lanka several field surveys were conducted including a study of 13 MSW compost plants and current septage management practices in 41 local authorities (LA), a detailed case study of an existing plant mixing MSW and FS, and a willingness to pay study among 257 farmers in proximity of a designated pilot co-composting station. The average cost recovery percentage of the existing compost plants was less than one third of the O&M costs in Sri Lanka with significant variations. The willingness to pay study indicated a high interest in enriched compost. Field trials showed that co-composting with septage could enhance the MSW compost nutrient value. For example, the Phosphorous content of 0.4% could be increased nearly 10 times. In general, co-composting could increase the financial sustainability of the existing compost plants to a substantial degree, while nutrient recovery from MSW without septage addition may not be financially sustainable. Pelletized co-compost could have an increased market value of 70%-1000,1, compare to the normal MSW compost. |
| format | Conference Paper |
| id | CGSpace67630 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| record_format | dspace |
| spelling | CGSpace676302025-03-11T09:50:20Z Solid waste and septage co-composting as a pathway to cost and resource recovery in Sri Lanka Fernando, Sudarshana Drechsel, Pay Jayathilake, Nilanthi Semasinghe, Christina solid wastes urban wastes composting resource management recycling cost recovery nutrients faecal coliforms sewage sludge farmers Due to its low nutrient content, compost from municipal solid waste (MS\I\1 qualifies mostly as a conditioner of soil physical properties than soil fertility. This limits the value proposition of the compost and its potential for cost recovery to maintain the compost stations. One way to enhance the compost value is to enrich it with nutrients. Given the increasing attention to fecal sludge (FS) management from septic tanks and latrines, co-composting of both waste streams could be a win-win option to increase the compost nutrient value. To assess the current situation of MSW composting and opportunities and acceptance of co-composting in Sri Lanka several field surveys were conducted including a study of 13 MSW compost plants and current septage management practices in 41 local authorities (LA), a detailed case study of an existing plant mixing MSW and FS, and a willingness to pay study among 257 farmers in proximity of a designated pilot co-composting station. The average cost recovery percentage of the existing compost plants was less than one third of the O&M costs in Sri Lanka with significant variations. The willingness to pay study indicated a high interest in enriched compost. Field trials showed that co-composting with septage could enhance the MSW compost nutrient value. For example, the Phosphorous content of 0.4% could be increased nearly 10 times. In general, co-composting could increase the financial sustainability of the existing compost plants to a substantial degree, while nutrient recovery from MSW without septage addition may not be financially sustainable. Pelletized co-compost could have an increased market value of 70%-1000,1, compare to the normal MSW compost. 2014 2015-07-30T06:07:51Z 2015-07-30T06:07:51Z Conference Paper https://hdl.handle.net/10568/67630 en Limited Access Fernando, Sudarshana; Drechsel, Pay; Jayathilake, Nilanthi; Semasinghe, Christina. 2014. Solid waste and septage co-composting as a pathway to cost and resource recovery in Sri Lanka. In Asian Institute of Technology (AIT). From toilet to source - Accelerating uptake of sustainable and integrated wastewater management solutions: proceedings of the 1st Specialist Conference on Municipal Water Management and Sanitation in Developing Countries, Bangkok, Thailand, 2-4 December 2014. London, UK: IWA Publishing; Bangkok, Thailand: Asian Institute of Technology. pp.246-252. |
| spellingShingle | solid wastes urban wastes composting resource management recycling cost recovery nutrients faecal coliforms sewage sludge farmers Fernando, Sudarshana Drechsel, Pay Jayathilake, Nilanthi Semasinghe, Christina Solid waste and septage co-composting as a pathway to cost and resource recovery in Sri Lanka |
| title | Solid waste and septage co-composting as a pathway to cost and resource recovery in Sri Lanka |
| title_full | Solid waste and septage co-composting as a pathway to cost and resource recovery in Sri Lanka |
| title_fullStr | Solid waste and septage co-composting as a pathway to cost and resource recovery in Sri Lanka |
| title_full_unstemmed | Solid waste and septage co-composting as a pathway to cost and resource recovery in Sri Lanka |
| title_short | Solid waste and septage co-composting as a pathway to cost and resource recovery in Sri Lanka |
| title_sort | solid waste and septage co composting as a pathway to cost and resource recovery in sri lanka |
| topic | solid wastes urban wastes composting resource management recycling cost recovery nutrients faecal coliforms sewage sludge farmers |
| url | https://hdl.handle.net/10568/67630 |
| work_keys_str_mv | AT fernandosudarshana solidwasteandseptagecocompostingasapathwaytocostandresourcerecoveryinsrilanka AT drechselpay solidwasteandseptagecocompostingasapathwaytocostandresourcerecoveryinsrilanka AT jayathilakenilanthi solidwasteandseptagecocompostingasapathwaytocostandresourcerecoveryinsrilanka AT semasinghechristina solidwasteandseptagecocompostingasapathwaytocostandresourcerecoveryinsrilanka |