RU2308314C1 - Vertical settler with the vortex chamber of flocculation - Google Patents

Abstract

FIELD: chemical industry; devices for the physical-chemical purification of the natural waters and sewage.

SUBSTANCE: the invention is pertaining to the device intended for the physical-chemical purification of the natural waters and sewage from the settlings and floating impurities with application of the chemical reactants. The settler contains the cylindrical and conical body, the flocculation vortex chamber, the inducing head with the nozzle, the collecting chute of the floating substances, the chute of the clarified water and the pipe duct for the settlings removal. The flocculation vortex chamber is made in the form of the cone with the location of the guiding circumference downward. The inducing head is mounted over the vortex chamber. The technical result of the invention consists in intensification of the processes of purification of the natural waters and sewage from the floating and settling impurities with application of the chemical reactants and the increased efficiency of purification.

EFFECT: the invention ensures intensification of the processes of purification of the natural waters and sewage from the floating and settling impurities with application of the chemical reactants and the increased efficiency of purification.

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Description

The invention relates to structures for treating natural and wastewater and can be used to clarify water from settling and floating impurities using chemical reagents.

A device for treating wastewater containing a cylinder-conical body, a baffle in the cylindrical part of the body, a feed wastewater supply tray, a spillway, a bowl for removing floating substances with a pipeline for removing floating substances, a pipe for removing sludge under hydrostatic pressure, a collection tray of clarified sewage with the clarified sewage pipeline (SU 208552 A, class B01D 21/02, dated 12.03.1968).

A disadvantage of the known device is the lack of compaction of floating substances, the lack of devices for intensifying the removal of compacted floating substances and the absence of a suspended sediment layer.

The technical problem to which the invention is directed is to increase the intensification of the treatment of natural and waste waters.

This problem is solved by the fact that in a vertical sump with a vortex flocculation chamber containing a cylindrical and conical body, an inlet tray, an ejection nozzle with a nozzle, a vortex flocculation chamber, a collection tray of floating substances with a gear spillway and a pipeline for removing floating substances, a sediment removal pipeline, a tray clarified water with a clarified water removal pipeline, the flocculation vortex chamber has the shape of a cone with the location of the guide circle downward, ejecting the nozzle is installed above the vortex flocculation chamber, and between the walls of the cylindrical body and the vortex flocculation chamber there is a suspended sediment layer.

The essence of the invention is illustrated by drawings, where in Fig.1 and Fig.2 shows the design of a vertical sump with a vortex flocculation chamber, Fig.3 - design of a device for intensifying the removal of compacted floating substances.

The positions in the drawings indicate:

1 - cylindrical body

2 - input tray

3 - nozzle

4 - ejection nozzle

5 - swirling chamber flocculation

6 - layer of suspended sediment

7 - clarified water tray

8 - sediment removal pipeline

9 - gear spillway

10 - collecting tray floating materials

11 - pipeline removal of floating substances

12 - conical housing

13 - clarified water removal pipeline

The vertical sump with a vortex flocculation chamber consists of a cylindrical body 1 with a conical casing 2, a vortex flocculation chamber 5 having a cone shape with an arrangement of a circumference to the bottom, an ejection nozzle 4 with a nozzle 3, an inlet tray 2 and a tray of clarified water 7, a collection tray floating 10 substances with a gear spillway 9.

An example of a vertical sedimentation tank with a vortex flocculation chamber.

The contaminated liquid with a solution of chemical reagents is transported through the feed tray 2 to the nozzle 3 of the ejection nozzle 4 (Fig. 3), where as a result of the liquid outflow, air is sucked from the atmosphere, resulting in a water-air mixture, the density of which is less than the density of the compacted floating substances. During the movement of air bubbles in the thickness of the layer of compacted floating substances, a certain volume is displaced, and then the excess of compacted floating substances through the spillway 9 enters the collection tray of floating substances 10, from where they are transported outside the vertical sedimentation tank by the pipeline for removing floating substances 11. Then, the liquid to be purified with the reagent solution enters the flocculation vortex chamber 5, where water is mixed when it moves from top to bottom due to a decrease in the speed of movement with an increase in the living cross-sectional area in height, due to which aggregation particles form in the form of flakes, which partially precipitate and enter conical housing 12, from where periodically removed outside the vertical sump through the sediment removal pipe 8 under hydrostatic pressure. Another part of the aggregate particles in the form of flakes, having a smaller hydraulic size, passes the plane of the guide circle of the vortex chamber flocculation 5, where as a result of changing the direction of flow the most intensive separation of solid and liquid phases occurs. Next, the liquid to be cleaned flows from the bottom up to the suspended sediment layer 6, limited by the surfaces of the cylindrical body 1 and the flocculation vortex chamber 5, where the living cross-sectional area is a variable and, as a result, the upward flow velocity will be variable. Since the hydraulic size of coagulated suspended solids is a variable, then along the height of the layer of suspended sediment 6, layers of suspended substances with a certain hydraulic size will be formed, with the maximum critical hydraulic size of coagulated particles being observed in the lower part of the layer of suspended sediment 6, and particles with a minimum critical hydraulic fineness will be concentrated in the upper part of the suspended sediment layer 6. As a result of a diverse kind of interaction (Brownian motion of van der Waals forces, ionic bonds, etc.) on admission of water into the suspended sediment layer 6 will occur adhesion of coagulated slurry particles, their enlargement and as a result, an increase in hydraulic size. Upon reaching the maximum critical hydraulic size of the coagulated particles in the suspended sediment layer 6, they will settle and then enter the conical housing 12 of the vertical sedimentation tank, from where they are periodically removed under hydrostatic pressure through the sediment removal pipe 8 outside. Particles with a hydraulic particle size less than the minimum critical hydraulic particle size will be removed from the suspended sediment layer 6 along with clarified water, then they will enter the clarified water tray 7 and then will be removed outside the vertical settler via the clarified water removal pipeline 13. Floating substances coming with the liquid to be cleaned and having a density lower than the density of the liquid being cleaned will be enlarged and compacted due to the collision of particles due to the conical part of the vortex flocculation chamber 5, as a result of which they will float and collect in the upper part of the vortex flocculation chamber 5.

Claims (1)

Vertical sump with a vortex flocculation chamber containing a cylindrical and conical body, an inlet tray, an ejection nozzle with a nozzle, a vortex flocculation chamber, a collection tray of floating substances with a gear spillway and a pipeline for removing floating substances, a sediment removal pipeline, a clarified water tray with a clarified water removal pipeline characterized in that the flocculation vortex chamber has the shape of a cone with the location of the guide circle downward, the ejection nozzle is set lena flocculation of the vortex chamber, and between the walls of the cylindrical body and the vortex chamber is weighted flocculation sludge layer.

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