TECHNIQUE OF PREPARING CATTLE FARMING LIQUID WASTES FOR AGRICULTURAL PURPOSE UTILISATION Russian patent published in 2009 - IPC C02F11/14 C02F1/52 C02F103/20 

FIELD: agriculture; chemistry.

SUBSTANCE: invention is to be implemented in the field of agriculture to provide for preparation of liquid wastes generated during cattle breeding farms and complexes operation for eventual farmland irrigation and fertilisation utilisation. Liquid wastes generated during cattle breeding farms and complexes operation are treated with a 1-5% solution of the polyaluminium hydrochloride (Al₂(OH)₅Cl) coagulant agent during 2-5 minutes, continuously stirred with the pH value remaining unmodified. After a 40-60 minutes long settlement the mixture becomes separated into a transparent liquid fraction utilised for irrigation and a sedimentation to be used as organic fertiliser.

EFFECT: enhanced cost-efficiency of wastewater chemical treatment required for its preparation for agricultural purpose utilisation; improved agromeliorative value of the resultant fraction substances combined with precipitation of settlement.

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