Cookie tracking notice
Are we allowed to crumble with cookies and anonymous tracking?

We use cookies on our website. Some of them are essential for the operation of the site (so called session cookies), while others help us to improve this site and the user experience (tracking cookies). We use the application Matomo and the external service etracker to analyze your behavior on our website anonymously. Because we value your privacy, we are here with asking your permission to use the following technologies. You can change your settings any time via this link or the menu item in footer menu. For more information visit our Data Policy

Co-composting of faecal sludge and organic solid waste Kumasi, Ghana - Case study of sustainable sanitation projects

Cofie, O., Koné, D. (2009)

Published in: 2009

Sustainable Sanitation Alliance (SuSanA)

Cofie, O., Koné, D.

Uploaded by:
SuSanA secretariat

Partner profile:
common upload


 Location of library entry

Content - Summary

This case study discusses a research and demonstration project for combined treatment of faecal sludge and organic solid waste for reuse in agriculture (pilot scale in urban area) in Kumasi, Ghana. The project treats 45 m³ of fecal sludge per month and it covers an area of ~500 m².

The basic technology chosen for this project consists of two main process steps: faecal sludge drying on unplanted drying beds and windrows co-composting of dried faecal sludge (FS) and organic solid waste (oSW). Two unplanted drying beds were built with a surface area of 25 m2 each (to hold 15 m³ excreta with a depth of 30 cm). The compost has been tested for its impact on the germination capacity and early growth of selected vegetables commonly grown in the urban and peri-urban areas. It was estimated that the amount of compost produced from the pilot plant will be approx. 37 tons/year. A subsequent study
valued the compost produced at the plant to be approximately 3.5 euros per 50-kg bag.

The fact that this pilot plant has been operating for 7 years can be taken as a good sign for sustainability. However, for financial sustainability, external support or subsidies are needed. Total investment costs were about 16,500 euros. The supporting agencies were Ministry of Foreign Affairs, France, National Centre of Competence in Research (NCCR) North South, Switzerland, KEZO, Switzerland (Waste Disposal Services Zurich Oberland (German name is: Zweckverband Kehrichtverwertung Zürcher Oberland).

Bibliographic information

Cofie, O., Koné, D. (2009). Co-composting of faecal sludge and organic solid waste Kumasi, Ghana - Case study of sustainable sanitation projects. Sustainable Sanitation Alliance (SuSanA)

Filter tags

Case studies in SuSanA template Composting, vermicomposting (solid waste), composting toilets English Faecal sludge treatment processes Faeces or faecal sludge Sub-Saharan Africa Urban (entire city)


Co-composting of faecal sludge & organic solid waste Kumasi, Ghana

Format: pdf file
Size: 0.34 MB

Share this page on    

Networks Circle


Latest SuSanA Blog Articles

SuSanA Blog »

SuSanA newsletter

Stay informed about the activities of SuSanA and its partners. The SuSanA newsletter is sent out around four times per year. It contains information about news, events, new partners, projects, discussions and publications of the SuSanA network.

Subscribe to newsletter »




Resources and publications

Our library has more than 3,000 publications, factsheets, presentations, drawings etc. from many different organisations. It continues to grow thanks to the contributions from our partners.

Add item to library »

The three links below take you to special groups of items in the library for more convenient access:


The project database contains nearly 400 sanitation projects of many different organizations dealing with research, implementation, advocacy, capacity development etc. Advanced filtering functions and a global map are also available. Information on how and why this database was created is here.

People working for SuSanA partners can add their own projects through their partner profile page. You might need your SuSanA login upgraded for this purpose. Please contact us if you would like to add a project.

Trainings, conference and events materials

Missed important conferences or courses? Catch up by using their materials for self study. These materials have been kindly provided by SuSanA partners.

Shit flow diagrams, excreta flow diagrams (309 SFDs worldwide)

Shit flow diagrams (SFDs) help to visualize excreta management in urban settings. Access SFDs and more through the SFD Portal.

Emersan eCompendium

Humanitarian Sanitation Hub

Sanitation Workers Knowledge and Learning Hub




Discussion forum

Share knowledge, exchange experiences, discuss challenges, make announcements, ask questions and more. Hint: Your discussion forum login is the same as your SuSanA login. More about the forum's philosophy »

Integrated content

We are hosting content from some other communities of practice and information-sharing portals. This section also provides a link to SuSanA's Sanitation Wikipedia initiative.

Suggest content to add »

SuSanA partners

Not yet a SuSanA partner? Show your organisation's support to SuSanA's vision and engage in  knowledge sharing by becoming partners.

Apply to become a partner »

Individual membership

Register as an individual member of SuSanA free of charge. As a member you can interact with thousands of sanitation enthusiasts on the discussion forum.  You can also get engaged in one of our 13 working groups and our regional chapters. Our FAQs explain the benefits further.

By getting a SuSanA login you can fully participate in the SuSanA community!

Register as a member


Forgot your password?
Forgot your username?