METHOD FOR PRODUCTION OF SOLUTION OF BIOLOGICALLY ACTIVE SUBSTANCES FROM POULTRY MANURE Russian patent published in 2019 - IPC C05F3/00 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture and can be used in processing poultry manure produced at poultry farms. Method of producing a solution of biologically active substances from poultry manure includes preliminary milling and homogenisation followed by a hydrolysis step in the presence of an alkaline solution and an anaerobic fermentation step in mesophilic mode at moisture content of 90–93 wt%, further separation of suspension with separation of liquid and solid phase, use of part of liquid phase at stages of hydrolysis and anaerobic fermentation and removal of remaining liquid phase after temperature pasteurisation as solution of biologically active substances. Hydrolysis step is carried out in two stages. First step is performed for at least one day at temperature of 25–30 °C, humidity 85–87 wt%, initial pH of medium 8.3–8.5 in presence of potassium hydroxide solution or sodium hydroxide or mixture thereof. Second stage is performed at temperature 34–36 °C, humidity of 88–90 wt%, initial pH of medium of 7.6–7.8. Anaerobic fermentation is carried out at temperature of 34–36 °C, initial pH value of medium 7.0–7.3. Solid phase obtained after separation is directed for extraction with water to obtain a liquid extract which is fed for grinding and homogenisation, and a solid residue which is used as a soil improver.

EFFECT: technical result is increased output of solution containing humic acids and other biologically active substances, which can be used in plant growing, and in animal breeding, in particular during fattening of broiler chickens.

4 cl, 6 ex, 5 tbl