SU1296198A1 - Radial settling tank - Google Patents

Abstract

The invention relates to a device for clarifying liquids by settling and improves the quality of clarification and serviceability. The radial settling tank consists of elements for thin-layer settling 23 made in the form arranged one above the other and connected in forming tubular sections respectively for collecting sludge, clarified liquid and oils, collection container 17, distribution means, made in the form of regulating tanks 3 connected in pipes 6 and 8 with distribution trays 7. The trays 21 are used to discharge the oils, and the trays 14 are removed to discharge the clarified liquid. 14. Through the nozzle 19, the section for collecting the scrap is cleaned with a scrim. 1 hp f-ly, 2 ill. 13 p. 7 7 J, W 3 1 about El co from 05 with SC)

Description

The invention relates to the treatment of wastewater from suspended solids and floating liquid contamination by the method of thin layer settling and can be used in a complex of biological, chemical and mechanical treatment plants, as well as in recycled industrial water supply systems, for example, in ferrous metallurgy plants.

The purpose of the invention is to improve the quality of clarification and serviceability.

FIG. 1 shows a sump, longitudinal section; in fig. 2 shows section A-A in FIG. one.

The radial sump contains a pipeline 1 with branches, fitted with valves 2 for supplying initial wastewater to each control tank 3, the discharge pipes of which have float valves 4 mounted on the pipes 5, by which they regulate the water level in the tank by telescopic movement them vertically; pipes 6 for transporting source waste from control tanks to distribution tray 7, overflow pipes 8, elements for thin settling, you

filled as one above

the other, connected by forming tubular sections 9, 10 and 11, respectively, for collecting sludge, clarified liquids and oils.

Between sections 9 and 10, a dual-wall partition 12 is located with a gap to the walls.

The sump also contains an overflow threshold 13 located at the end of the settling section, designed to prevent the removal of suspended solids with clarified water, a tray 14 for draining the dried liquid from the sedimentation trap, a vertical pipe 15 telling all catch pans of all Rus and intended for drainage of clarified effluents beyond the limits of the settler, slits 16 formed by edges of a dual-pit partition and pipe wall, for passing sludge into the slurry section, sludge collector 17, valve 18 for batch or continuous discharge ska sediment upwardly directed nozzle 19 for cleaning the slurry section using ruff port 20 for outputting the floating contaminant in the tray 21 for discharging the oil from which the latter are removed via conduit 22 outside of the settler.

It is advisable to make the elements for thin-layer settling 23 in the form of longitudinally cut pipes with a ratio of the diameters of sections 9, 10 and I, respectively 1.5: 4: 1.

Radial sump works as follows.

Source wastewater contaminated with suspended solids with oil or oil, via pipeline 1 s answer0

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effects supplied with valves 2 are fed to control tanks 3 installed in front of each channel of sedimentation pipes in order to create adjustable liquid head in front of the precipitation pipes.

By means of the float valves 4, a predetermined level of water in the tanks is ensured, which determines the corresponding predetermined flow rate of the liquid in the sump.

In accordance with the hydraulic particle size of suspended solids in the treated wastewater, the flow rate of the fluid in the settling pipes is regulated by means of a nozzle 5, which is telescopically mounted on the end of the flow pipe with the possibility of vertical movement together with a float valve fixed on it.

From the control tanks, the waste water through pipes 6 enters the corresponding distribution trays 7.

Excessive water from control tanks through pipes 8 is poured into collection trays (if float valves fail to operate).

From trays 7, wastewater flows into sections 10.

In order to eliminate the mutual influence of the processes of settling and sludge removal, carried out under countercurrent flow conditions, a two-pit partition 12 is installed between the settling and sludge sections.

At a given speed, wastewater flows through section 10 and through overflow threshold 13 goes into tray 14, from which the vertical pipe 15, which informs all the Rus, is removed beyond the limits of the settler.

Suspended solids precipitated from the waste water penetrate through the slits 16 into the slurry section 9, through which they slip into the sludge trap 17, and after the necessary compaction, the sediment is removed through the nozzle 19.

Pop-up liquid contaminants through pipe 20 are poured into tray 21, from which the vertical pipe 22 is removed beyond the sump.

Claims (2)

1. A radial settling tank containing installed one above the other elements for thin-layer settling, a vertically located sludge collector, distribution means and a tray for draining the clarified liquid, characterized in that, in order to improve the quality of clarification, it is equipped with control distribution tanks with float valves and chutes removal of oils, the elements for thin-layer settling are made in the form of United along the forming tubular sections, respectively, for collecting sludge, clarified liquid and oils having a double-slope partition installed between the sections for collecting the slime and clarified liquid with a gap between their walls, the distribution means is made in the form of trays attached to the sections for the clarified liquid and regulating tanks. sections for collecting slime are attached to the slurry tank, and trays for draining oils are attached to sections for collecting oils. 2. The settling tank according to claim 1, characterized in that, for convenience of servicing, the section for collecting the slime is provided with an upward branch pipe connected to the section from the side opposite to the sludge collector. sixteen 13 FI.2