SU1439086A1 - Thin-layer sedimentation tank - Google Patents

Abstract

This invention relates to drinking water supply and wastewater treatment. The purpose of the invention is to reduce the metal content and increase the reliability of the settling tank in operation. The thin lagoon contains a body, input units for the source liquid and output for separated phases, a thin layer module, the plates of which are made of film material and have channels at the ends into which the upper and lower rods are threaded, rails fixed in the upper part of the body and having slots for rigid mounting top rods, hollow perforated guides, placed | 1e over the rails, and screws that interact with the nuts. The liquid to be purified enters the receiver, then passes through the channels of a thin-layer settling tank, where under the action of gravity and vertical lifting forces of the flow, a simultaneous sedimentation of the suspension and the rise of pop-up contaminants occur. As the lengths of all plates are increased, the movable frame and the lower rods connected to it by means of blocks and a flexible cable are displaced downward by the action of the forces of the compressed springs parallel to the original position, while all the plates will remain evenly stretched. 9 il. (L 4 :; WITH so about 00 about:

Description

The invention relates to the field of domestic water supply and wastewater treatment.

The aim of the invention is to squeeze the metal structure and improve reliability.

FIG. 1 shows the sump, general view; in FIG. 2, the same, axonometry; on fig.Z - the position of the frame when changing the length of the plates; in fig. 4 — node I in FIG. one; in FIG. 5, node II in FIG. one; FIG. 6 is a section A-A in FIG. in fig. 7 is a section BB in FIG. 6; in fig. 8 - the node III in FIG. 1 in FIG. 9 is a section bb In Fig;

The lamella clarifier includes a housing 1, plates 2 made of film material, upper 3 and lower 4 rods, hollow perforated guides 5, drainage perforated pipes 6, toothed overflow 7, tension screws 8, nuts 9 and 10, sleeves 11, fixed on housing 1, springs 12, washers 13, nuts 14, flexible cable 15 and movable frame 16, with housing 1 provided in its lower part with a sediment accumulator 17c with a nozzle 18 and a receiver 19 of wastewater being cleaned with a nozzle 20, in the middle part - with a thin-layer sump 21, at the top - a collection of 22 clarified articles The shackles with the pipe 23, the pockets 24 for collecting and discharging the pop-up ones. The connections with the pipes 25, the laths 26 with grooves for fastening the rods 3,. above which hollow perforated guides 5 are placed in the openings of the casing, above which the drainage perforated pipes 6 are located with access to the toothed weir 7. Plates 2 bend around the hollow perforated guides 5 and form pockets 27 above the rails 26. Lower rods 4 are rectangular the forms are threaded into the channels of the plates 2 and have axes 28 at the ends, the centers of which are displaced from the center of the rod section to its edge, blocks 29 are attached to the axis 29. The tightening screws 8 with the threaded part cooperate with nuts 9 and 10 and are installed in hubs 11 1 and a bushing 30 of the movable frame 16 and are biased by a spring relative podvizhnoy.ramy 12. The movable frame 16 has a rectangular shape, on the surface BO .kovoy which the axles 31 fixed on them blo

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kami, 32. Blocks 29 and 32 are connected by the envelope of their cable 15, the ends of which are fixed on the frame 16,

The sump works as follows.

The greed to be cleaned through the pipe 20 enters the receiver 19 of the cleaned effluent, passes the thin layer settler 21, where under the action of the forces of gravity and vertical components. the lifting forces of the flow occurs the simultaneous sedimentation of the suspension and the rise of pop-up contaminants. At the same time, the deposited particles have a shortened deposition and rise path, determined by the angle of inclination of the plates. The angle of inclination of the plates is established depending on the type of contamination. Precipitated sediment slides along the upper surfaces of the plates 2 to the bottom of the accumulator 17 sediments.

Pop-up contaminants (oil products), collected in the form of a thin film under the plane of the plates 2, move upwards to the pockets 27, and then through the holes of the hollow perforated, pin-down guides 5 fall into the side pockets 24.

The thickness of the pop-up pollutant layer in the side pockets 24 is determined by the distance between the water mirror in the collection area of treated wastewater to the top of the hollow perforated guides 5. Displaced by the pop-up contamination from side pockets 24, the water enters through the opening 33 into the zone of the thin-layer sump 21.

In the course of operation of a thin-layer module, cases of elongation or shortening of all plates, or parts of them, are possible due to a change in the temperature of the wastewater entering the treatment; inaccuracies in the manufacture of plates or their unequal strength.

With increasing lengths of all the flat. Tin 2 movable frame 16 with blocks 32 and associated with them by means of flexible cable 15 and blocks 29 lower rods 4 are displaced under the action of forces of springs 12 down parallel to the original position, while all plates1 2 under the action of forces of compressed springs 12 are displaced and remain uniformly taut.

When reducing the lengths of all plates 2 in the latter, there are stresses in the amount exceeding the tension

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FIG. 6

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FIG. 9

Claims (1)

Claim A thin-layer sump containing a housing, units for inputting the initial liquid and outputting the separated phases, a thin-layer module, the plates of which are made of film material and have ends at the ends into which upper and lower rods are threaded, rails fixed in the upper part of the housing 5 and having grooves for rigid fastening, upper rods in the rails, screws interacting with nuts fixed on the housing, characterized in that, in order to reduce the metal consumption and increase reliability in operation, it is equipped with a spring-loaded frame and blocks mounted on ra · Me and the lower rods of the thin-layer module, and the blocks are interconnected 15 by a cable, the ends of which are mounted on a spring-loaded frame. Figure 1 1 439086 7 6 l & in FIG. 9