FIELD: agriculture. SUBSTANCE: the present innovation deals with processing of organic waste products. The suggested method includes anaerobic thermophilic fermentation of chicken dung followed by division of fermented mass into solid and liquid fractions due to centrifuging. Before thermophilic anaerobic fermentation, chicken dung is supplemented with solution of bischofite natural mineral of sulfate type MgCl2•6H2O, density of 1.1-1.5 t/cu. m heated up to 75-95 C at 100-300 kg/t raw manure. The obtained fermented mass should be homogenized and supplemented with slime of rotten porcine manure out of pig-breeding farms' sedimentation tanks at weight ratio of dung and porcine manure according to dry matter to be 1:(2-4) at constant mixing for 5-20 min. After mesophilic fermentation the product obtained is divided into two streams: 20-30% mass is directed for fermentation of fresh chicken dung, and the rest 70-80% is cooled up to environmental temperature at no access of atmospheric air and divided into solid and liquid fractions due to centrifuging. Solid residue is partially dried up, and liquid fraction is recirculated. EFFECT: increased quality of fertilizer. 6 tbl
Authors
Dates
2003-10-27—Published
2002-04-01—Filed