SU948397A1 - Settler for separating suspensions and consolidating deposits - Google Patents

Description

The invention relates to the field of wastewater treatment, in particular, to devices for separating suspensions and compacting sludge, and can be used to cleanse water from mechanical impurities in enterprises of any industry, for example, in metallurgy, petrochemical, pulp and paper, where the separation of solid and liquid phases and compaction of sediment is necessary.

A settling tank is known, comprising a housing, supply and discharge pipelines, shelves of the same length, located one above the other, with a gap between them and a certain angle of inclination to the horizon 1.

The disadvantages of the design are low productivity, resulting in a precipitate of high residual moisture and significant ga barity of the device.

The closest to the invention in technical essence and the achieved result is a sump for separating suspensions and compacting sediment containing a body with

upper and lower conical caps, a package of reverse truncated cones placed vertically one above the other and filled with diameters increasing from top to bottom from the center to the periphery, supply and discharge connections, devices for distributing the initial suspension and collecting and draining the clarified water 2.

A disadvantage of the known device is relatively low productivity and

to the water content of the condensed sediment.

The purpose of the invention is to increase the performance of the settler, reducing its size and reducing the residual moisture of the sludge.

This goal is achieved by the fact that from 15 a stove to separate the suspensions and to seal the sediment, comprising a body with upper and lower conical slits, a package reversing the sectioned cones placed along

Claims (2)

20 verticals one over the other and implemented with diameters increasing from top to bottom from the center to the periphery, supply and discharge connections, devices for distributing the initial suspension and collecting and discharging clarified water are provided with radial partitions placed between the inverse truncated cones and the tank with a pipe connecting it to the lower inverse cone. The drawing shows the proposed sump, longitudinal section. The sump contains a housing 1 with upper and lower conical lids 2, supplying 3 and outlet 4, 5 and 6 nozzles, container 7, device 8 for distributing the initial suspension, protective device 9, device for collecting and draining clarified water 10, flexible hose 11, a package of reverse truncated cones 12 placed vertically one above the other and made with diameters increasing from the center to the periphery, check valves 13, 14 and 15, stop valves 16, pressure gauge 17, radial partitions 18 placed between the reverse truncated cones 12, us Wasp 19, Cuttings 20, connecting the containers 7 with the lower reverse cone 12. The sump works as follows. The high pressure pump 19 through the nozzle 3 into the device for distributing H. The waste suspension 8 is supplied with sewage to be cleaned of mechanical impurities. Check valves 13, 14 and 15 and shut-off valves 16 maintain an overpressure 3-10 atm in the sump. A pressure gauge 1.7 is used to control the pressure. The clarified water is collected by a floating device for collecting and discharging the clarified water 10 and is removed through the flexible hose 11 and the nozzle. 5, Air entering the water is removed through the openings of the nozzle 4, which is also a directing device for collecting clarified water 10. Suspended substances are deposited on the surface of the reverse truncated cones 12, and as it accumulates, the sediment slides and enters the container 7, where it occurs consolidation and unloading. The final compaction and discharge of the sediment is carried out by overpressure in the sump from the reservoir 7. The separation of the reverse truncated cones 12 among themselves by the radial partitions 18 prevents the formation of turbulent flows, which worsen the deposition of the precipitated substances. The safety device 9 protects the suspended matter directly from the distribution device 8 into the collection device 10. Due to the overpressure. 4 created by the pump 19, the air contained in the pores of the material is compressed, the pores are filled with water and thus the mass of the substance increases, which leads to an increase in the rate of its deposition. A decrease in the volume of a substance due to pressure also contributes to an increase in its sedimentation rate and a decrease in the residual moisture of the sediment. The proposed settling tank can be used with high wastewater flow rates, with a continuous process of supplying them for cleaning and continuous discharge of components, while the content of suspended solids in the source water can vary within wide limits. The use of the proposed settling tank will allow to obtain a significant economic effect by reducing the production cycle, increasing the process efficiency, eliminating the use of reagents, stimulating the process of precipitating substances, obtaining sludge with a lower residual moisture, reducing the cost of materials, manufacturing, installation, operation and commissioning of equipment. DETAILED DESCRIPTION A settling tank for separating suspensions and compaction of sediment, comprising a housing with upper and lower conical caps, a package of reverse truncated cones placed vertically one above the other and filled with diameters increasing from top to bottom, supply and discharge connections, devices for distributing the original suspension and collection and removal of clarified water, characterized in that, in order to increase productivity, reduce the size of the sump and reduce the residual moisture of the sediment, the sump is equipped with divider walls placed between the inverse truncated cones and a container with a nozzle connecting it to the lower inverse cone. Sources of information taken into account during the examination 1. Volftrub L.I. Study of the work of thin-settling tanks in the collection Purification of Natural Waters M., Vol. 1, 1971. 2. USSR author's certificate No. 622.501, cl. B 03 D 1/14, 1977 (prototype)