SU1579525A2 - Settling tank for clarifying water - Google Patents

Abstract

This invention relates to a device for sewage treatment by settling. The purpose of the invention is to increase the effect of cleaning the drain from settling and pop-up pollutants. The sump contains a housing with packages of parallel plates located in the response chamber and the sludge compaction chamber. The collection of clarified water is carried out by a system of trays, from where it is discharged into the reservoir. On both sides of the tray there are semi-submersible shields, the lower edge of which is overlapped by the upper edge of the submersible V-shaped shield. Between the walls of the semi-submersible shields and the submersible V-shaped shield there is a package of parallel plates with a distance between the plates in the package 2 to 10 times less than the corresponding distance in the package in the zone of clarification. Between the trays of clarified water, rotary trays are placed, with a handle for diverting pop-up contaminants into the storage tank. One of the walls of the V-shaped shield is removable to remove sediment from the chamber. 3 il.

Description

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The acquisition relates to a sewage treatment unit by settling and is an improvement of the invention according to the author. St. No. 919699.

The purpose of the invention is to increase the cleaning effect and enhance the functionality by purifying water from pop-up contaminants.

FIG. 1 shows a sump scheme, general view; in fig. 2 - the same, top view; in fig. 3 shows section A-A in FIG. one.

The sump for water clarification comprises a housing 1 with packs of parallel plates placed in the clarification chamber 2 and the sediment sealing chamber 3. At the ends of a package of parallel plates in chamber 2, there is a slotted collector 4 of a system for in-depth removal of clarified water with a height of 0.6-12 mm, as well as collectors 5 connected by pipeline 6 to water storage 7.

Shut-off and adjustment fittings 8 are installed on the pipelines 8. The lower part of the shelf load, located in chamber 3, is designed as an oblique obelisk, which is separated from the sealing zone by parallel partitions 9 by parallel ends, and the base of the pyramid 10 has a slot 11 with a height of 1 -1.5 mm, connecting the zone 12 of the suspended sediment and the zone 13 of the compaction of the sediment.

Three pyramids are located in the lower part of the settler, from which the initial flow is supplied through the middle, and the compacted sediment is discharged through the extreme ones. A system of trays 14 is located in the upper part of the settler for collecting clarified water and diverting it to storage 7.

On both sides of the tray 14, semi-submersible shields 15 are placed in pairs and oppositely inclined to its vertical axis.

sl 1

from sl to sl

to

the lower edge of which overlaps the upper edge of the immersion V-shaped shield

16, installed under the corresponding pair of semi-submersible shields 15.

An additional package of parallel plates is placed between the walls of the semi-submersible shields 15 and the submersible V-shaped shield.

17. The shields 15, 16 and the stack of plates 17 are placed in rails 18 attached to the lateral inclined walls of the sump body 1.

One of the walls of the V-shaped shield 16 when emptying the sludge accumulation chamber 19 rises upwards along the guides 18. Between the trays 14, rotary trays 20 with a handle 21 are placed for diverting pop-up contaminants on both sides of the tray to a storage settler 22, from where they are diverted via pipeline 23 for additional processing.

The sump works as follows.

The initial flow through the nozzle of the central pyramid is fed into the zone 12 of the suspended sediment, and then into the lower part of the chamber 3. The coarse slurry accumulates in the zone 12 and through the slit 11 enters the compaction zone 13.

The lighter suspension accumulates in the lower chamber 3, providing a more complete clarification of the flow, and then its excess, entering the clarification chamber 2, flows over the partition 9 and into the compaction zone 13.

A system of in-depth regulated water withdrawal through a slotted collector 4 and a collector 5 allows an increase in the use of the volume of the settling tank and an increase in the cleaning effect. To prevent 4 pop-up contaminants from escaping through the slotted collector, the ratio

where Uo is the hydraulic size of pop-up contaminants, mm / s, for the retention of which the settling tank is calculated;

V is the horizontal component of the speed of movement of the clarified drain, mm / s, to the slit collector 4;

h is the height of the slot, through which the drain is taken, above the partition 9, m; 1 is the horizontal distance from the partition 9 to the slot collector, m.

It is advisable not to carry out the selection of runoff through a slotted collector for finely dispersed pop-up soils.

In the clarification chamber 2, additional effective clarification of the drain in a thin layer occurs, while the settling contaminants fall out on the upper side.

the plates and slide into the compaction zone 13, and the pop-up soils on the upper side of the plate move into the upper zone of the settler and are periodically discharged along the rotary chute 20.

The clarified stock enters an additional package of parallel plates 17, where it is additionally cleaned. Additional purification occurs due to the fact that the distance between the plates in the package is 2-10 times

0 is less than the corresponding distance in the bag in the light chamber 2. This ensures the retention of fine precipitating and floating particles. Contributes to the additional detention of the settling

particles also that in the package of plates 17 the direction of flow and the sliding of sediment deposited on the plates coincides, which prevents its erosion, re-entering the clarified drain and removal from the sump. From accumulation chamber 19

0, the sediment is periodically discharged when ascending along the guides 18 of the removable wall of the V-shaped shield.

As pop-up contaminants accumulate in the upper zone, they are discharged

5 along the chute 20, which for this purpose is rotated by the knob 21 with its receiving edge at an angle, which ensures that populating substances are discharged over the entire height, alternately on the left and on the right side of chute 20.

0 and the discharge of pop-up soils through conduit 23 is carried out periodically.

The technical and economic efficiency of the proposed settling tank compared to the known one is to increase the cleaning efficiency of the deposited contaminants 5 times in terms of the hydraulic particle size of the trapped particles by placing an additional package of parallel plates with small distances in front of the collecting tray

0 THEM

 The functionality of the settler is expanded, and it can be used in the treatment of wastewater containing pop-up contaminants by placing 5 on both sides of the tray to discharge the clarified water of semi-submersible shields and a submersible V-shaped reflective shield, the upper edge of which overlaps the lower edge of semi-submersible shield.

50

Claims (1)

Invention Formula A clarifier for water clarification according to ed. St. No. 919699, characterized in that, in order to increase the cleaning effect and enhance the functionality, it is provided with guides, semi-submersible shields fixed on the side walls of the body, arranged in pairs with a slope to each other on both sides of each tray to collect clarified water, V-shaped reflective shields installed under each pair of semi-submersible shields, the upper edges of the backing pair of shields, additional packages of parallel plates laid between the semi-submersible and different shields, and rotary They overlap the lower edges of the corresponding 5 to remove supernatants. pairs of plates, additional packages of parallel plates located between the semi-submersible and V-shaped shields, and swivel trays G5 P 20 / / / Fy Fig2 Fig.Z