RU1837933C - Unit for purification of raw and waste water - Google Patents

Description

The invention relates to the field of electro-residual purification of mechanical impurities of dielectric Newtonian viscous liquids, such as natural or wastewater ie water, and can be used, in fact, for clarification of coal-water slurries in hydraulic production systems, mine drainage, flotation, etc.

The purpose of the invention is to increase the productivity and efficiency of the device.

The invention is illustrated in the drawing, which presents a General diagram of the installation.

Installation for clarification of natural and waste water contains a reservoir 1 for clarified liquid, connected by a pipe 2 through a pump 3, regulating shutoff valves 4, a supply pipe 5 and a distributor 6 of clarified liquid with a filter chamber 7. The supply pipe 5 is made in the form of a siphon 8, the bend of which is located at the level of the cover of the filter chamber 7 and is connected by an air tube 9 to the upper part of the chamber 7. The dispenser 6 of the clarified liquid has an outlet opening facing the bottom of the filter chamber EASURES 7, and repeats its shape, and on the edge of the outlet distributor 6 are notches that allows maximum turbulize exiting the flow distributor 6 os00 CA) VI Yu GJ CO

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fluid and avoid stagnant zones.

The filter chamber 7 in the initial state: through the loading hatch 10, is filled with a dispersed metal charge 11 (metal particles with a diameter of 8-10 mm), the height of the loading layer being 40-55% of the height of the chamber 7.

The upper part of the filter chamber 7 is made in the form of a bell 12, which serves to dampen the pressure of the clarified liquid stream. The height of the socket 12 is 0.25-0.50 of the height of the chamber 7. In the upper part of the socket 12, a drain hole 13 is made connecting the chamber 7 through the drain pocket 14. and the discharge pipe 15 with a settling tank. The settling tank may be provided with nozzles to remove clarified water and condensed water. draft.

Installation works as follows.

The multiphase liquid to be clarified (for example, a water-coal suspension coming from a mine drainage) is accumulated in the clarified liquid tank 1 and is pumped 2 through a pump 3 to a supply pipe 5 under pressure and then through a distributor 6 to the filter chamber 7. By a fluid under pressure and the choice of the geometry of the distributor 6 creates a turbulized flow of clarified liquid, particles of the dispersed metal charge 11 are picked up by the flow, while the combined action of the ascending the fluid flow and gravity forms from the particles 11 a so-called fluidized bed in which these particles undergo an oscillatory vortex motion. As a result of friction of the metal particles of the charge 11 with particles of water and impurities, an intensive electrification of impurity particles occurs. The process of electrification of impurity particles begins at the bottom of the filter chamber 7 and continues while they move to the upper part of the chamber, however, in both of the filter chamber itself .7 the process of coagulation of impurity particles does not occur due to the high turbulence of the flow.

When the stream of clarified liquid reaches the upper part of the socket 12 of the chamber 7, the treated liquid is drained through the drain hole 13 into the drain pocket 14 and then removes the pipe 15 into a sedimentation tank, where, after some time, the process of coagulation of impurity particles begins and the liquid phases separate.

The clarified water and condensed sediment are drained from the sedimentation tank through the outlet pipes as necessary (continuously or periodically) without stopping the process of clarifying the liquid.

When the process stops (working or emergency) to prevent particles of the dispersed charge 11 from entering the distributor 6 and then into the pump 3 insert siphon 8

with the air tube 9 into the pipe 2 is made so that the backflow of fluid from the pipe 2 into the tank 1 leads to a rupture of the flow in the siphon and the formation in its upper part of the air cavity.

Claims (1)

SUMMARY OF THE INVENTION A plant for clarifying natural and wastewater, comprising a filter chamber with a lid and a bottom, located therein a layer of a dispersed metal charge, a reservoir for clarified liquid and a precipitation tank connected to the filter chamber by means of a supply and discharge pipe, respectively, characterized in that, in order to increase productivity and efficiency, the filter chamber is provided with a clarifier liquid distributor as attached to the supply pipe of the pipe, the hole of which is made with a serrated edge and facing the bottom, the height of the loading layer is 40-55% of the height of the filter chamber, the upper part of the latter is made in the form of a bell, and the supply pipe has the form of a siphon, the bend of which is located at the level the upper edge of the bell and is equipped with an air tube, one end of which is attached to the bend, and the other to the lid of the chamber. k - I- J