METHOD OF PROCESSING OF BARK-DUMP AND PROCESS AREA FOR ITS IMPLEMENTATION Russian patent published in 2014 - IPC C05F11/00 

FIELD: textiles, paper.

SUBSTANCE: invention relates to a method of processing and recycling of bark-dump which is a product of waste at pulp and paper mills. In the formed bark-dump sewage sludge of treatment facilities are injected, containing wt %: humidity 92-96; weight fraction of organic compounds 62-66; weight fraction of total nitrogen 5.6-7.3; weight fraction of total phosphorus (P₂O₅) 4.8-6.5; heavy metals 0.02-2.0; residual oil - 0.015-0.25; pH - 6.8, in the ratio of bark:reagent (sewage purification), 8:2, respectively, followed by aeration of bark-dump with the atmospheric air, at that a diluent for the reagent the drainage waters of bark-dump are used, and for obtaining organic fertiliser the process of flushing the bark-dump body with the reagent and air is repeated several times.

EFFECT: increased efficiency of elimination of bark-dump body and turning its mass into the organic fertiliser.

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