Conversion of household solid waste organic ingredients into fertilizers containing organic and mineral constituents
Abstract
The article is devoted to the problem of solid household waste disposal. A procedure is proposed for convering the organic part of solid household waste into fertilizers containing both organic (~40%) and mineral (~60%) components, i.e. representing an analogue of organomineral fertilizers. Due to the presence of pathogenic microflora in raw household waste, it seems unreasonable to use it without preliminary detoxication. A possibility is considered of using geothermal waters of Azerbaijan, coming to the ground surface with a temperature of 25–75°C and containing hydrogen sulfide, for disinfection of the pathogenic microflora of the organic ingredients of the solid household waste. The method involves treating the organic part of the waste with geothermal water followed by introducing natural additives of the local origin. For introducing micronutrient elements, a phonolite is added to the organic component of the waste, and a local shell limestone is used for regulating pH level of the resulting fertilizer. The influence of Н2S presence in the geothermal waters on the efficiency of disinfection of the raw materials is studied. The role of hydrogen sulfide dissolved in the geothermal waters in increasing the efficiency of disinfection is substantiated.
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