Fate of Physico-Chemical Parameters During Decomposition of Human Feces

In this paper the thrust was on assessing changes occurring during the decomposition of human feces through estimation of changes in some typical characteristic parameters (pH, Electrical conductivity, volatile solids, moisture content, carbon content, nitrogen content, C:N ratio and oxygen uptake rate). For these purpose experiments were performed in plastic reactors at controlled temperature (25±2°C) in an incubator that simulated the drop and store type of dry toilets without permitting leaching of dissolved/very fine colloidal substances including microorganisms. The study was carried out over a period of one year. The results of this study indicate that decomposition rate of human feces is very slow with only 15% reduction in volatile solids after a year.