RU218318U1 - WASTE WATER TREATMENT DEVICE - Google Patents

Abstract

The utility model relates to the food industry, in particular to the field of wastewater treatment. SUBSTANCE: device for wastewater treatment contains a flotation tank with a tangential pipe for supplying purified water, a collection of pollutants with a pipe outlet, an aerator, pipes for removing purified water and sludge. The aerator is made in the form of a supply line with an angular distributor of compressed air rigidly mounted on it in the form of a cylindrical sleeve with holes, on which is placed, with the possibility of rotation about its axis, a scattering block, made in the form of two rigidly interconnected lower and upper disks with central landing holes, and on one of them there are curvilinear arcuate grooves with the possibility of pairing with one of its ends with the holes of the cylindrical sleeve, and the other end - on the outer boundary of the scattering block. EFFECT: purification of wastewater from fats and other organic pollutants, reduction of energy costs. 2 ill.

Description

The utility model relates to devices for flotation wastewater treatment of fats and other organic pollutants and can be used primarily in the food industry or energy.

A device for wastewater treatment is known, containing a flotation tank with tangential pipes for supplying purified water, a collection of pollutants with a pipe outlet, an aerator, a tank of purified water with a pipe connected to the flotation tank in its lower part [USSR Author's certificate N 1726384, IPC C 02F 1 /24, 1992].

The disadvantage of the known device is the imperfection of the collection of pollutants, the lack of height adjustment of the level of liquids in the pipes for the supply of purified water, the discharge of purified water and pollutants, depending on the mode of supply of purified water, as well as an insufficiently high content of air in the housing. These shortcomings lead to low quality of treated water, low productivity and high energy costs.

The closest in technical essence and the resulting effect is a device for wastewater treatment, containing a flotation tank with tangential pipes for supplying purified water, a collection of pollutants with outlet pipes, an aerator, a treated water tank with a pipe connected to the flotation tank in its lower part, a outlet pipe purified water is installed in the purified water tank and brought to the level of the treated water supply pipes with the possibility of adjusting it in height [RF Patent No. 2 050 328, IPC C02F 1/24, 1995].

Due to the fact that the purified water outlet pipe is installed in the purified water tank and brought to the level of the treated water inlet pipe with the possibility of adjusting it in height, it is possible to maintain the height of the hydraulic funnel in the open hydrocyclone in the flotation tank in a wide range of changes in the productivity and pressure of the water supplied for cleaning. This somewhat improves the quality of cleaning and reduces energy costs.

However, the removal of pollutants is still difficult. They do not interact actively enough with air bubbles; condensation of a foamy pollutant on the surface of the floated liquid is not excluded. This reduces the quality of cleaning, especially in the "stagnant" zones near the walls of the flotation tank. Ultimately, the high quality of wastewater treatment from fats and other organic pollutants is hindered, the productivity of the treatment process decreases, and energy costs for treatment increase.

The proposed utility model will reduce the energy costs for cleaning.

To achieve the specified technical result, a wastewater treatment device contains a flotation tank with a tangential pipe for supplying water to be treated, a collection of pollutants with a pipe outlet, an aerator, pipes for removing purified water and sludge, while the aerator is made in the form of a supply line with a rigidly installed corner compressed air distributor, in the form of a cylindrical sleeve with holes, on which is placed, with the possibility of rotation about its axis, a scattering block made in the form of two rigidly interconnected lower and upper disks with central mounting holes, one of which has curved arcuate grooves , with the possibility of pairing with one of its ends with the holes of the cylindrical sleeve, and the other end facing the outer boundary of the scattering block.

Due to the fact that the aerator is made in the form of a supply line with an angular distributor of compressed air rigidly mounted on it, in the form of a cylindrical sleeve with holes, it is possible to supply compressed air directly to the place of its distribution in the center of the flotation tank. This is facilitated by the dissipating block placed with the possibility of rotation relative to the axis of the perforated bushing. The implementation of this block in the form of two rigidly interconnected disks with central mounting holes ensures its rotation relative to the axis of the sleeve. The presence of curvilinear arcuate grooves on one of the disks included in it, with the possibility of pairing with one of its ends with the holes of the cylindrical sleeve, and the other end facing the outer boundary of the scattering block, ensures its rotation according to the "Segner wheel" principle without additional energy supply. Such rotation makes it possible to more evenly distribute air bubbles in the liquid being floated, to eliminate stagnant zones near the walls of the vessel and to provide a spiral movement of air jets, which additionally mixes the liquid being cleaned, providing its more efficient contact with the bubbles.

Since the treated effluents are constantly mixed, condensation of the foamy pollutant on the surface of the floated liquid is excluded, and its active condensation occurs in the pollutant outlet pipe.

Ultimately, when treating wastewater from fats and other organic pollutants, energy costs for cleaning are reduced.

In FIG. 1 shows a general view of the proposed device for flotation wastewater treatment;

in fig. 2 view A-A of the scattering block.

The device contains a cylindrical flotation tank 1, tangential branch pipes 2 for supplying purified water, a branch pipe 3 for removing contaminants, a collector 4 for contaminants, an aerator in the form of a source of compressed air 5 and a supply line 6, on which an angular distributor 7 is rigidly mounted in the form of a cylindrical sleeve with holes. On this sleeve is placed with the possibility of rotation of the scattering block, made in the form of two rigidly interconnected lower 8 and upper 9 discs (for example, screws 10), with central mounting holes. On one of these disks 8 or 9, arcuate grooves 11 are made with the possibility of mating with one end with the holes of the cylindrical bushing of the distributor 7, and the other end facing the outer boundary of the scattering block, for example, the upper disk 9. The outlet 12 is intended for purified water, and the container 13 to collect it, through the telescopic pipe 13, if necessary, carry out additional removal of purified water.

The device works as follows.

The treated waste water is fed under pressure through pipes 2 into a cylindrical flotation tank 1, where it acquires a circular motion (open hydrocyclone). The air flow for flotation is supplied by the source of compressed air 5 of the aerator through the supply line 6 to the angular distributor 7 in the form of a cylindrical sleeve with holes through which it enters the arcuate grooves 11. When air flows through these grooves, forces arise in accordance with the effect of the "Segner wheel". operating along the normal to the lines of arcs, forcing the lower disk 8 and the disk 9 rigidly connected to it to rotate around the axis of the angular distributor bushing 7. This air, leaving at high speed to the outer boundary of the scattering block, creates air flows ascending to the surface of the floated liquid in spirals, evenly and intensive contact with the contaminants. The tangential supply in the upper part of the treated water tank enhances the effect of centrifugal forces creating a hydraulic funnel, in which fats and other organic pollutants tend to the center of the funnel, and heavy particles are thrown to the walls of the cylindrical tank, and slide into its conical part towards the screw collector 4, and are fed into the branch pipe 3 of the pollutants. Condensation is sealed and condensed in nozzle 3, which facilitates cleaning, while eliminating the condensation of contaminants on the surface of the open hydrocyclone.

Purified water descends into the lower part of the tank 1 and enters the branch pipe 12 installed in the tank 13 of purified water. Having risen to the upper part of the pipe 12, the water flows into the tank 13. The movable part of the pipe 14 (as a communicating vessel) allows you to set the height of the hydraulic funnel in the tank 1, which ensures cleaning regardless of the productivity and pressure of the liquid supplied for cleaning.

The proposed technical solution allows for the purification of wastewater from fats and other organic pollutants, as well as to reduce the energy costs used for it.

Claims (1)

A device for wastewater treatment, containing a flotation tank with a tangential pipe for supplying water to be treated, a collection of pollutants with a pipe outlet, an aerator, pipes for removing purified water and sludge, characterized in that the aerator is made in the form of a supply line with an angular compressed air distributor rigidly mounted on it , in the form of a cylindrical sleeve with holes, on which is placed, with the possibility of rotation about its axis, a scattering block made in the form of two rigidly interconnected lower and upper disks with central mounting holes, one of which has curved arcuate grooves with the possibility pairing with one of its ends with the holes of the cylindrical sleeve, and with the other - facing the outer boundary of the scattering block.

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