|The Use of Effluents from Biolatrines in Tanzania (African Development Foundation, 1996, 38 pages)|
Almost all kinds of organic wastes can be recycled into valuable products, provided the processes for treatment and disposal or reuse of these wastes are well considered in the initial design of treatment facilities. It is also necessary to consider the potential for pollution and the possible diseases associated with handling and recycling of animal and human wastes.
Human waste, in particular include excreta, waste water, discarded food residue, and other solid household wastes. Excreta refers to the combination of faeces and urine, normally of human origin. When diluted with flushing water or other grey water (such as from washing, bathing, and cleansing activities), it becomes domestic sewage or waste water. Another type of human waste, called solid waste, refers to the solid or semisolid forms of waste discarded as useless or unwanted. This includes food wastes, rubbish, ashes, and other residues. Food wastes, which are mostly organic, are particularly suitable for recycling.
The quantity and composition of human excrete, waste water, and solid wastes vary widely from location to location depending upon, for example, diet, socio-economic factors, weather and water availability. Generalized data may not be readily applicable to a specific case, and design of the biolatrine system should be preceded by field investigation at the intended sites.