DRAINAGE-FILTERING SLIT DEVICE FOR DEHYDRATION OF LIQUID SLUDGE FORMED ON PURIFICATION STRUCTURES DURING WASTEWATER PURIFICATION (OPTIONS) Russian patent published in 2023 - IPC C02F11/00 B01D25/00 

FIELD: utility sector.

SUBSTANCE: inventions relate to the utility sector, to sludge dehydration devices. A drainage-filtering slit device for dehydration of liquid sludge formed on purification structures during wastewater purification is described, consisting of a frame with stiffeners and limiting walls, which contains at least one limiting wall made of sheet material with longitudinal slit cuts along the entire height of the device, while slit cuts are located vertically and/or with a vertical slope, and a distance between horizontal stiffeners is no more than 500 mm, while limiting walls of the device are made trapezoid and located with smaller bases in a lower part of the device, and with bigger bases – in an upper part, while limiting walls are tilted from the vertical axis to sides, steps are fixed inside the drainage-filtering device. A drainage-filtering slit device for dehydration of liquid sludge formed on purification structures during wastewater purification is described, made in the form of a hollow structure consisting of a frame with stiffeners and limiting walls, at least one limiting wall is made of separate elements forming slit holes along the entire height of the device, while these separate elements are rigidly fixed to stiffeners to form slit holes with a width of 1-5 mm, which are located vertically or with a vertical slope, while stiffeners of the frame are made in the form of a comb consisting of a horizontal rib and perpendicular ribs, to which separate elements are rigidly fixed, while each separate element is fixed to a comb prong, which is separated from a filtering wall at a distance of 30-50 mm.

EFFECT: increase in filtration quality.

8 cl, 26 dwg