METHOD FOR RECYCLING OF WASTE LIQUOR FROM GRAINS Russian patent published in 2009 - IPC C12F3/10 A23K1/06 

FIELD: technological processes; chemistry.

SUBSTANCE: method provides for preliminary mixing of initial waste liquor with flush water from the stage of press-filter regeneration, filtrate and sediment from neutralisation stage produced in the previous cycle, and then settling in settling tanks, at that more efficient settling of suspended particles takes place due to specified mixing. Then separation is carried out into condensed phase and mother liquid, filtration of produced condensed phase in belt press filters, drying of produced sediment to prepare animal food. Then filtrate is neutralised by lime to produce sediment and neutralised mother liquid, which is purified from dissolved organic compounds, and water is produced, which is suitable for technical purposes.

EFFECT: increased efficiency of belt press filter operation due to the fact that only condensed phase of waste liquor is filtrated, and higher yield of fodder product enriched with calcium.

2 cl, 1 dwg, 1 tbl