METHOD FOR TREATMENT OF LIGNIN SLUDGE Russian patent published in 2023 - IPC C02F11/14 C05F7/00 

FIELD: agriculture; forestry.

SUBSTANCE: invention relates to methods for processing lignin sludge. After dehydration, lignin sludge is biodetoxified using the Gumat-Bio preparation, which is an association of aerobic lignin-cellulose-decomposing microorganisms. At the same time, Gumat-Bio is introduced onto the surface of the sludge-lignin at a dose of 2 liters of solution per 1 m³ of the mass. Then, with an interval of 15 days, this mass is mixed three times. After 1.5 months, the hardening mass is unloaded onto a concrete pad or into a free map, and the technological process of applying the Gumat-Bio preparation is repeated again. Compost ready for recuperation is used as an organomineral fertilizer to increase the fertility of depleted, degraded and sloping lands in the cultivation of crops, shrubs and trees. At the same time, compost is applied at a dose of 60 tons per hectare with its incorporation into the soil to a depth of 15 cm.

EFFECT: biodetoxification of lignin sludge is provided with the possibility of its further use as an organomineral fertilizer.

1 cl, 3 tbl