RU1793941C - Equipment for cleaning water - Google Patents

Abstract

Usage: wastewater treatment. SUMMARY OF THE INVENTION: a water purification device comprises a housing, a source of water supply, including a central nozzle which is a flocculation chamber, a tangential tube and a diffuser with conical separation inserts. The settling unit includes supporting frames and inclined rods mounted on them with a gap to each other, thin-layer elements made of film material in the form of a tape. The clarified water outlet unit includes radial gutters with distribution cutouts on the sides, a peripheral circular tray with a discharge pipe. The unloading unit contains an unloading pipe and a pressure line. Bearing frames are made in the form of radial flat trusses, the inner sides of which are attached to the central pipe, and the outer ones are fastened with ropes. Thin-layer elements are made in the form of conical rings installed with the possibility of vertical displacement in the gaps between the rods 9. 2 zp f-ly, 5 ill.

Description

The invention relates to potable water supply and is intended for the purification of water and wastewater.

A vertical sump is known, comprising a round body with a conical bottom, a central tube in the form of a water-flocculation chamber with a quencher in the form of a shield of shields, a tangential inlet pipe, radial and peripheral catchments, a discharge and discharge pipe,

Its disadvantage is the uneven loading of thin-layer elements due to the uneven drainage of clarified water by radial troughs from a circular sump with the same duty cycle of the distribution cutouts on the sides. As a result, cleaning efficiency is degraded.

The closest in technical essence and the achieved result to the claimed one is a thin-layer sump containing a housing, a conical bottom, nodes for inputting the initial liquid and output of the separated phases, a thin-layer module comprising a frame made of rails with

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grooves, inclined rods installed on them in a vertical plane (tube, wires, thread) and thin-layer elements of film material in the form of a tape enveloping the rods; moreover, the diameter of the rod (tube) is equal to the distance between the thin layer elements, and the angle of inclination is equal to the angle of inclination of the rods.

However, the use of thin-layer elements of film material in the form of a continuous tape is possible only with a parallel relative position of the rods. In the radially arranged frames of the round sump, the rods are not parallel to each other. The use of frames of a rectangular shape leads to a significant loss of useful settling area, an increase in speed, uneven distribution of flow, a deterioration in the hydraulic regime, and, consequently, a decrease in cleaning efficiency.

The aim of the invention is to increase the efficiency of liquid purification by improving the hydrodynamic flow regime. .-:

The goal is achieved in that in a device for water purification, comprising a housing, nodes for supplying source water and outputting the separated phases, a thin-layer module including carrier frames, rods and thin-layer elements of film material in the form of a tape enveloping the rods, while the rods are installed in a vertical plane at an angle equal to the angle of inclination of thin-layer elements, the feed water supply unit is made in the form of a central flocculation chamber with a tangential feed pipe and a diffuser in the lower part with conical sections By flow bodies, the clarified water drainage unit is made in the form of radial grooves with distribution cutouts communicating with an annular drainage tray, the supporting frames are made in the form of radially placed flat trusses, the inner ends of which are attached to the flocculation chamber, and the outer ends are fastened by ropes, rods mounted on the rods with a gap to each other and the ability to move horizontally, with thin-layer elements located around the rods with the formation of annular conical deposition channels. The plates are provided with radial stiffeners, and the rods with their upper ends are fixed on radial grooves, the distribution cutouts of which are made with a depth decreasing from the center to the periphery.

The proposed design provides mixing of the initial liquid with the resins in the flocculation chamber, equalization and uniform distribution of the mixture in the distribution part of the settler, its smooth delivery to thin-layer elements in laminar mode, and uniform collection and removal of separated phases. The movement of fluid through a diffuser with conical dividing inserts with a central fairing positively affects the stabilization of the flow swirling in the central nozzle. In this case, the amount of loss can be controlled and

5 does not necessitate a significant expenditure of energy. The vertical vortex-like motion of the liquid is converted into a radially divergent flow, which unfolds first by 90 °, then, interacting with the walls of the housing, another

90 °, and at the entrance to the thin-layer elements another 60 °, i.e. just 240 °. Fairing in

 the diffuser also serves to reduce sedimentation in the central part of the conical

5 bottom, more even distribution on the bottom surface and easier removal using the discharge line of the discharge pipe.

Arising in a circular motion

The centrifugal component of the flow contributes to the removal of a suspension of a different density from it, including mechanical with a higher hydraulic fineness.

The uniform distribution of the processed fluid between the thin-layer elements is also facilitated by the uneven duty cycle of the distribution cutouts (comb type, round holes) on the sides of the radial catchments, decreasing from the center to the periphery.

The execution of thin-layer elements in the form of conical rings with transverse protrusions on the surface, their free

5, placement in the gaps between the rods allows horizontal displacement, up to the stop in adjacent rods or to some intermediate equilibrium position.

0

Other advantages compared with the known technical solutions are: more complete use of the living section of the settling space

5, regardless of the configuration of the housing (round, square, multi-faceted), simplification of the design of the supporting rails (the assembled structure is lightweight, delicate), which facilitates installation and dismantling during preventive and repair maintenance,

simplification of the structure by eliminating the mechanism for tensioning the tape from it.

A significant load is carried by the bulges periodically located on the surface of the conical rings — ribs forming partitions of thin-layer elements. They give rings greater rigidity, provide a certain distance between them, and give the flow directional upward movement without transverse flows and local circulation.

A change in the length or shortening of the tape under the influence of a change in the flow rate or the temperature of the liquid or medium is compensated by the displacement of the rings in the s-gaps between the rods, which, however, does not affect the change in the distance between them, since the rods and the transverse ones prevent this protrusions of the rings.

In FIG. 1 shows a device for purifying water; in FIG. 2 is a section AA in FIG. 1; in Fig.3 - section BB in Fig.1; in FIG. 4 is a diagram showing the arrangement of plates around the rods in a perspective view; in FIG. 5 is a fragment of a sedimentation site in a perspective view.

A water purification device comprises a housing 1 with a conical or cylindrical upper part and a conical bottom. The feed water supply unit comprises a central pipe 2, which serves as a chloe formation chamber, a tangential feed pipe 3 and a diffuser 4 with conical dividing inserts 5, of which the central one is equipped with a head 6 and serves as a flow. The settling unit includes supporting frames 7 made in the form of radial flat trusses 8 and installed on them with gaps to each other, rods 9 inclined in the vertical plane, thin-layer elements 1.0 of film material in the form of a tape enveloping the rods with the formation of conical annular precipitating channels, with the possibility of vertical displacement in the gaps. In this case, the distance between the elements is equal to the value of the diameter of the rod d and the gap d. The angle of inclination of the thin-layer elements 10 is equal to the angle of inclination of the rods 9. The clarified water outlet assembly includes radial catchments 11 with distribution cutouts 12 on the sides and a peripheral annular catchment tray 13 with a discharge pipe 14. Bearing frames 7 have high values due to their U-shape the moment of inertia of the cross section, which provides the necessary strength of the supporting frames 7 with minimal geometric dimensions and, consequently, a decrease in the metal consumption of the structure.

Distribution cutouts 12 on the sides of the radial grooves 11 are made with a duty cycle decreasing from the center to the periphery. The discharge unit comprises 5 discharge pipe 15 and a pressure line 16 for flushing the sludge.

Fixed gaps between the rods 9 are formed by gaskets installed in their upper and lower parts (not

0 are shown), Rods 9 with gaskets are mounted on trusses 8 by means of pressure devices 17 consisting, for example, of a screw, a bar and a nut. Thin-layer elements 10 are provided with protrusions 18, giving

In the flow directional upward movement without transverse flows and local circulation and serving stiffeners. The protrusions 18 help maintain the conical. the form of thin-layer elements in the gaps

0 between the rods 9.

During the installation process, lower trusses 8 are first assembled with rods 9, fastened to the central pipe 2, and ton-5 oblique elements are put on a kind of comb. After that, the remaining elements of the supporting frames Tees of the outer side are assembled and fixed with a rope (not shown).

The device operates as follows.-....

The processed liquid is fed into the central pipe 2 through the tangential pipe 3. In the pipe 2, which serves as a flocculation chamber, the liquid

5 acquires a rotational motion. Passing through a diffuser 4 with flow dividers 5, a vortex-like flow flows around the central separator 5 with head b and is converted into a diverging flow with a uniform velocity distribution over

section. The output is much larger

fluid volume, flow continues to lose

 speed and change direction - initially by

90 °, then another 90 ° and 60 ° - a total of

5,240 °.

As a result of the action of centrifugal forces, hydraulically large particles fall out: from the liquid and settle in the bottom of the housing 1, and the liquid containing more

0 fine suspension, enters the zone of thin-layer sedimentation.

Under the action of gravitational forces and forces caused by the upward flow, suspended solids are deposited on

5 the walls of the inclined thin layer elements 10 and its continuous sliding in the direction opposite to the direction of movement of the clarified water. The clarified water flows upward into the radial grooves 11 and the peripheral tray 13.

The duty cycle of the distribution cutouts 12 on the sides of the radial grooves 11, decreasing from to the periphery, ensures uniform collection of clarified water and, therefore, a uniform hydraulic load of the thin-layer elements 10 and a uniform distribution of sediment in the bottom of the settler. The clarified water is discharged through a discharge pipe 14. The sediment is discharged

poured through discharge pipe 15 using a pressure line to flush sediment 16.

The inventive device can be manufactured using industrial methods using blocks (displacement chambers, support frames, etc.).

The manufacture of thin-layer elements can be carried out directly at the construction site.

Claims (3)

SUMMARY OF THE INVENTION 1. A device for water purification, comprising a housing, nodes for supplying source water and outputting the separated phases, a thin layer module including carrier frames, rods and thin layer elements of film material in the form of a tape enveloping the rods, the rods being installed in a vertical plane under angle equal to the angle of inclination of thin-layer elements, characterized in that, in order to increase the cleaning efficiency, the source of water supply is made in the form of a central flocculation chamber with a tangential feed ruboy diffuser and the bottom of the conical spacers stream of clarified water removal unit is designed as a radial distribution channels with recesses communicating with the annular catchment tray carrying the frames are made in the form of radially placed flat trusses, the inner ends of which are attached to the flocculation chamber, and the outer ends are fastened with ropes, the rods are fixed on the trusses with a gap to each other and the ability to move horizontally, with thin-layer elements located around the rods with the formation of annular conical precipitation channels. 2. The device pop. 1, characterized in that the plates are provided with radial stiffeners. 3. The device according to claim 1, with the exception that the upper ends of the rods are fixed on radial grooves, the distribution cutouts of which are made with a depth decreasing from the center to the periphery. J