SU784891A1 - Thin-layer settler - Google Patents

Description

The invention relates to a device for clarifying a liquid containing suspensions with a specific gravity of more than one.

A device for clarifying a liquid 5 is known, which consists of a cylindrical body, conical plates facing downward with a large base, liquid supply and discharge systems, and a sludge collector [1).

The disadvantages of this device are:

a large volume of construction per unit of daily productivity;

bulky and unstable input and output systems. From. changing the speed of water movement requires changing the curvature of the guide plates. Therefore, the sump works steadily only at one speed value, with others - the clarification effect is reduced;

a complex system of sediment removal, precipitated precipitate moves towards the stream of clarified water, which causes flow turbulence in the boundary layer and reduces the effect;

the sliding sediment enters the clarified water supply zone, which leads to its partial re-involvement in the sump and a decrease in the clarification effect.

The aim of the invention is to increase productivity through the use of centrifugal? forces in the process of sedimentation of suspensions.

This goal is achieved by the fact that the thin-layer sump is equipped with a coaxially mounted inner cylindrical shell, on which coic plates are fixed, placed on both sides of the fluid supply unit with a vertical partition and flow-leveling elements between the conical plates, while the fluid supply and discharge units are located in diametrically opposite sides of the sump. Figure 1 shows a thin-layer sump, top view; figure 2 is a cut aa in figure 1.

The thin-layer sump consists (Figs. 1 and 2) of the outer 1 and 2 inner shells with conical plates 3 fixed on the inner shell, with bent edges forming side slots, supplying 4 and removing 5 fluid systems, jet ₍ 'leveling devices 6, installed between the conical plates on both sides of the inlet system 4, a vertical partition 7 that covers the side slots between the plates in the sector limited by jet-leveling devices 6, a sludge collector 8 having several pipe in its lower part s 9 to continuously remove slurry.

The sump works as follows. The liquid, through the supply system 4, is fed into the sump and, having passed through the jet leveling devices 6, tangentially enters the space 'between the plates 3. The clarified liquid is taken from the sludge .. ^! nickname diverting system 5.

• The movement of fluid between the conical plates around the circumference is; catches the occurrence of centrifugal force acting on the solid phase <suspended in water. Under the action of this force, the trajectory of the suspension moves.

The jet leveling devices quench high speeds in the area supplying the liquid of system 4, evenly distribute the liquid throughout the entire cross section of the sections of the sump _{4, and} form a laminar regime of its movement.

The movement of water across the generators of the ’. Cone of pastins with diametrically located inlet 4 th outlet. 5 systems allow for external-i diameter. 3:

phage / shell 1, many times smaller than that of the prototype, get the working length of the sump, equal to half the length of the sump prototype *. This leads to a decrease of 3-4 times the volume of the sump per unit of daily output.

Claims (1)

discharging necks 5 fluid systems, jet-equalizing devices 6 installed between conical plates on both sides of supply system 4, vertical partition 7, closing the side slots between plates in the sector bounded by jet equalizing devices 6, sludge-collecting B, which has several nozzles 9 for the continuous removal of sludge. The sump works as follows ./ Liquid, through inlet system 4, is fed into the sump and, after passing through the The leveling device b, tangentially enters the space between the plates 3. The clarified liquid is taken from the sediment. Nyka with a discharge system 5. - -The movement of a fluid between conical plates in a circle causes the appearance of a centrifugal force acting on a solid phase suspended in water. Under the action of this force, the trajectory of the suspension changes. -:; The leveling devices extinguish high speeds in the zone feeding the system 4 fluid; they evenly distribute the fluid throughout the cross section of the sections of the sump to form a laminar mode — moving it. - .. - The movement of water across the forming plates of the cone with diametrically located inlet 4 and outlet 5 systems allows for a diameter of the outer shell 1, many times smaller than that of the prototype, to obtain a working length of the sump equal to half the length of the sump of the prototype . This leads to a 3-4 times decrease in the volume of the settling tank, the arrival of the per unit daily output. Claims of the Invention A thin-bed settler for fluid clarification, containing a cylindrical body, conical plates, fluid supply and discharge units and a sludge trap, which is so tingling, in order to increase productivity by using centrifugal force in the process of sediment suspension, Equipped with a coaxially mounted BHyl-ciliydrichic casing. This shell, on which the conical plates are fixed, placed on both sides of the housing unit by a vertical partition and jetting elements between the conical plates, while the fluid inlet and outlet units are located in diametrically opposite sides of the settler. Information sources taken into account during the examination 1. Klko VA, Lieberman BC Thin-bed sedimentation tank with radial water flow for the purification of natural waters. Journal Water supply and sanitary1976, p.25. on Technique eight