Method for the whirl draining of washings during reverse flushing of filtering deposit and cylindrical filter, vertical with the whirl draining of washings during reverse flushing of filtering deposit

摘要

the centrifuge filter backwash drainage way with cylindrical, vertical is that through backwash filter is placed in the cross-section eccentric, a filter layer is of such a height that it between its upper surface.and the edge przelewowu0105 leu wylewowego backwash the remaining distance equal to 25% to 35% of the amount of rinse water and is administered under a filter with such intensity that obtains its approximately 30% expansion and leaves on ekspandowanym bed such layers the rinsing water, which makes the traffic creation on their surface pseudopu0142askiego vortex circulation of radiusin which power lines, hoisting washed out with ore particles of pollutants, mainly comprises a horizontal spiral curves ending in backwash outlet funnel, with the speed of backwash maintained within 1.25 m / s to 2,30 m / s, preferably 2,00 m / s.the subject of the invention is also a cylindrical, vertical, where edge przelewowa funnel (5) is placed in the vertical height of the upper edge of a cylindrical portion of the vessel (2) (1) and in the level, in cross-section tank (1), contained is eccentric at what an eccentricity that is 15% the diameter of filter tank (1),preferably, 7% to 12% of that diameter. the upper diameter of the funnel przelewowego is 17% to 23% in diameter and the lower diameter of the filter tank, funnel przelewowego (5) and volume outlet shall be selected to backwash flow rate was 1.25 m / s to 2,30 m / s.the filter may also have a top edge of the funnel przelewowego (5) bent downward in the direction odchylonym approximately 15o from axis direction, which is the greatest distance (5) from the edge of the funnel przelewowego wall container (1). the inclination is not greater than 5, preferably 2 to 4.