METHOD OF TREATING WASTES OF DIFFERENT ORIGIN Russian patent published in 2020 - IPC C02F9/06 

FIELD: water supply; sewerage.

SUBSTANCE: invention relates to treatment of domestic effluents, effluents of various industrial productions for recycling water supply and to discharge requirements for fishery purposes. Roughly primary treated effluents undergo vacuum-gravity-ejector treatment with simultaneous feed of reagent. Further, effluents are directed to multistage primary electrocautery treatment with ratio of return circulation to repeated electric treatment of 6–7:1, floatation treatment, treatment in a suspended layer chamber with a ratio of the height of the chamber to its area equal to 1.62, primary clarification in the clarification chamber with a labyrinth and vertically installed thin-layer modules. Then the effluents are supplied for secondary clarification in the chamber with two sections and horizontally installed thin-layer modules with the downflow to the upflow ratio equal to 0.72. Primarily electrically treated and twice clarified effluents are supplied to the second electrocoagulation treatment stage. Then the suspended layer chamber with height to area ratio equal to 1.62 is supplied, thin-layer settling in the chamber with horizontally installed thin-layer modules with downflow and ascending ratio equal to 0.72. Clarified wastes follow self-cleaning filter with filtration charge from foamed polystyrene of fraction No. 4 or No. 5. Then filtered water is supplied into control reservoir, and flushing water is discharged into reservoir of washing water and sediment. Settling is discharged from clarifiers of the first and second stages of electric treatment and clarification. Sediment and flushing water are fed into sediment compaction vessel to feed flocculant solution. Compacted sediment is supplied to the filter-press, and the decanted standing water is returned for repeated cleaning. Dehydrated sediment is discharged into container for temporary storage of accumulated sediment.

EFFECT: technical result is safety of operation without discharge to sewage of any wastes from the whole scheme.

1 cl, 1 dwg