CALCIUM-CONTAINING PREPARATION FOR COMPACTING AND DECONTAMINATING SLUDGE SEDIMENTS AND METHOD OF PROCESSING SLUDGE SEDIMENTS USING THEREOF Russian patent published in 2017 - IPC C02F11/14 B01D21/01 B09B3/00 

FIELD: chemistry.

SUBSTANCE: calcium-containing preparation for compacting and decontaminating sludge sediments of treatment facilities is a mechanical powder mixture comprising up to 50 wt % of at least two active components selected from the compounds: TiO₂, SiO₂, CuSO₄, Na₂SO₄, alkali, sodium humate, ammonium humate, aminoacetic acid, cuprum glycinates, manganese, calcium, the rest - CaO. The calcium-containing preparation is mixed with slusge sediment, liquid (water) and solid phases are separated by sedimentation method and then diversion of the liquid phase (water) is carried out. Calcium-containing preparation is used at a dose of 1-30 g/dm³. At least one active additive selected from the compounds: CuSO₄, Na₂SO₄, Na₂CO₃, alkali, sodium humate, ammonium humate, aminoacetic acid, cuprum glycinates, manganese, calcium at a dose of 8 g/dm³, is additionally added to the sludge sediment, at least after one or at one of the mixing, separating and water diverting stages.

EFFECT: invention enables to ensure highly efficient processing of the sludge sediments of treatment facilities, comprising activated sludge, raw sludge or a mixture thereof, while reducing the cost of the proposed preparation.

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