Resource-saving technology for manufacturing of environmentallyfriendly organic fertilizers

Abstract

ABSTRACT
The relevance of the paper is determined by the lack of technology for disinfection and treatment of the produced liquid cattle manure in the arctic regions of Russia (the Sakha Republic (Yakutia)).
The research objective is the development of technology for 
recycling of the cattle manure with resulting environmentally 
friendly organic fertilizers in biogas units. The technology allows 
agriculturalists to establish energy-saving self-contained manufacture. 
The primary research methods are the theory of similarity 
and experimental design theory, mathematical programming and 
simulation modelling methods. The Excel, Statistica 8, MathCAD 
programmes were used. 
The resource-saving technology for manufacturing biofertilizer from the cattle manure was developed, based on the mesophilic 
methanogenic microorganisms adapted to psychrophilic conditions. Thus, a psychrophilic anaerobic technology working steadily 
under low temperatures was obtained for the first time.
Introduction of a new technology in agricultural enterprises of 
Yakutia enables to yield on average 4.659 tonnes of mineralized 
organic fertilizer daily; the expected amount of finance from the 
sale of organic fertilizers will make 0,056 mln USD. 
The materials of the paper can be useful for students, lecturers 
and research scientists of natural and technical specialties, as well 
as for specialists of the agroindustrial complex and for farmers.
Keywords: liquid manure, biogas unit, anaerobic digestion, 
psychrophilic mode, biofertilizer.