Faecal Sludge Management: Highlights and Exercises

Eawag: Swiss Federal Institute of Aquatic Science and Technology

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Abstract: Globally, over one-third of the world?s population is served by onsite sanitation technologies. Faecal sludge is defined as what accumulates in onsite sanitation technologies. The following is the definition of faecal sludge from the book, Faecal Sludge Management - Systems Approach for Implementation and Operation: Faecal sludge comes from onsite sanitation technologies, and has not been transported through a sewer. It is raw or partially digested, a slurry or semisolid, and results from the collection, storage or treatment of combinations of excreta and blackwater, with or without grey water. Examples of onsite technologies include pit latrines, unsewered public ablution blocks, septic tanks, aqua privies, and dry toilets. Faecal sludge management includes the storage, collection, transport, treatment and safe enduse or disposal of faecal sludge. Faecal sludge is highly variable in consistency, quantity, and concentration.