SU757174A1 - Vertical settler - Google Patents

Description

The invention relates to the technique of mechanical treatment of waste (laver) waters of a sugar factory and can be applied in other industries in

industry for the separation of suspensions under the action of gravitational forces.

Known vertical sump containing a cylindrical tank with a conical bottom, sludge compactor with a tapered screw, peripheral collection of clarified water £ 1}.

A disadvantage of the known construction is a slight lightening effect. waste water due to the Uneven clarification of water over the cross section of the sediment, nickname and the formation of stagnant zones.

The purpose of the invention is to increase the effect of clarification of wastewater by ensuring uniform distribution of clarified water over the cross section of the sump.

This goal is achieved by the fact that the settling tank is equipped with a closed peripheral tray installed in the upper part of the tank and a closed receiving chamber with windows and pipes, water inlet and drainage pipes, evenly placed along a horizontal section connected to it.

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steward. Drainage pipes are supplied with height-adjustable nozzles installed in their upper part, and the silt sealer is supplied with vertical planks evenly attached to its inner surface.

FIG. 1 shows a vertical sump, longitudinal section; in fig. 2 - the same, top view; FIG. A-A, FIG. one; in fig. 4 - section bb FIG. one; in fig. 5 is a longitudinal section of the nozzle.

The vertical sump consists of a cylindrical body 1, a conical bottom 2, a conical silt sealer 3, to the bottom of which is mounted a turnstile 4, designed for the continuous removal of sediment. In the upper cylindrical part of the settling tank, there is an open catchment chamber 5, under it a closed receiving chamber 6, an open peripheral tray 7 for collecting clarified water, to which a discharge pipe 8 is attached. Under the open peripheral tray 7 there is a closed peripheral distribution box 9, which is connected to the closed receiving area camera 6 through inlet ports I

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10, located along the entire inner perimeter of the tray 9. To the closed water distribution tray 9, nozzles 11 are attached to supply the clarified waste water. To the bottom of the closed receiving chamber 6 are mounted central water supply pipe 12 and water supply pipes 13, evenly spaced throughout the cross section of the sump and not reaching the end of the cylindrical part of the sump. Drainage pipes 14 evenly spaced throughout the cross section of the sump and exceed the height of the side of the open catchment chamber 5.

In the upper part, the drainage pipes 14 are provided with self-adjusting nozzles 15, designed to regulate the horizontal level of the upper edges of the drainage pipes 14. The self-regulating nozzle 15 consists of a distribution funnel 16 connected to the upper part of the casing connecting pipe 17, on the inner surface of which there are two annular recesses, which are installed rubber or plastic rings 18. To the bottom, casing connecting pipe 17 is mounted float 19, with which I carry out Xia vertical moving funnels 16 and maintaining them at the same height as the water level in the 'catchment chamber 5.

In the center of the sump there is a pipe 20, inside which a shaft 21 passes, in the lower part of which a blade 22 with scrapers 23 and a solid conical auger 24 are mounted, which is intended for sealing and transporting sediment to the turnstile 4. The height of the inner conical surface of the iopackel 3 is fixed with a bracket 25 preventing rotational motion of the sediment.

Vertical sump works as follows.

The clarified waste water through the nozzles 11 'enters the' Closed distribution tray 9, from where

. The inlet ports 10 are guided into the receiving chamber 6. From the receiving chamber 6. The waste water through the water outlets 12 and GZ moves downwards, being evenly distributed over the entire cross section of the sump. During the movement of waste water through the downpipes 12 and 13 down with a low velocity, there is an intensive sedimentation of the suspension due to the addition of the vectors of the downward flow velocity and the sedimentation rate of the suspension. When leaving the water pipes 12 and 13, the waste water changes its direction from descending to ascending and moves evenly throughout the annulus upward.

Further, water through the drainage pipes 14 and distribution funnels, 16 self-regulating nozzles 15 is poured into the open drainage chamber 5, from which it is poured into the open drainage tray 7 and is discharged through the discharge pipe 8.

Thanks to the float 19, the distribution funnels 16 are maintained at the same level from the water horizon, thus ensuring uniform selection of clarified water and maintaining an optimal hydrodynamic mode of sedimentation of the suspension.

The sediment from the conical bottom 2 by means of scrapers 23 is moved to the silt compactor 3, where it is transported with a conical continuous screw 24 to the turnstile 4 and is removed.

In the presence on the inner conical surface of the slats 2 between the sediment and the inner surface of the ice compactor 3, additional friction occurs, preventing rotational movement of the sediment and contributing to the longitudinal movement of the sediment and its compaction.

The use of the proposed vertical sump allows for the same volume of the sump to increase the efficiency of clarification of waste water, which is equivalent to an increase in the performance of the device in 1,21,35 times. In addition, the moisture content of the sludge is 15-20% lower than in the known device.

Claims (3)

Claim 1. A vertical settling tank containing a cylindrical tank with a conical bottom, a sludge compactor with a tapered auger, a peripheral collection of clarified water, characterized in that, in order to increase the effect of clarifying waste water by ensuring uniform distribution of the brightened water, it is equipped with a closed peripheral tray and communicating with him closed receiving chamber with windows and pipes, water supply and drainage, evenly placed on the horizontal section of the sump. 2. The sump π. 1, according to the fact that the drainage pipes are equipped with height-adjustable nozzles installed in their upper part. 3. The sump pop. 1, characterized in that it is provided with vertical-strips evenly attached to the ilo-compactor.