SU919699A1 - Settler for clarifying water - Google Patents

Description

(54) DRAINER FOR LIGHTING WATER

The invention relates to a device for the treatment of wastewater by the method of gravitational sedimentation. The closest to the proposed technical essence and the achieved effect is a settling tank, which includes a housing with chambers for introducing raw water, clarification with a package of parallel plates, and compaction of sediment 1. The disadvantage of this design is that the suspended matter sedimenting in the shelf section but not all of them can overcome the oncoming flow of water from the clarification zone and get into the seals. Particles with a soaring speed less than the speed of the counter flow are carried out with clarified water, reducing the cleaning effect. To increase the cleaning effect, it is necessary to reduce the flow rate from the clarification zone at the entrance to the shelf section, which inevitably affects the clarifier performance. The shelves of the sections are overgrown with soils and, when they reach a certain height, they have a negative effect on reducing the cleaning effect. The aim of the invention is to increase the productivity of the clarifier, the period between the operations of cleaning the shelves from fouling and thereby intensifying the process of clarifying the water. To achieve this goal, in a settling tank for water clarification, including a housing with chambers for introducing raw water, clarification with a package of parallel plates and sealing the sediment, the housing is made in the form of a reverse rectangular trapezium, the plates are installed along the entire cross section parallel to an inclined side wall, with This device is equipped with partitions placed under the plate pack and an additional plate pack located in the feed water inlet chamber between the partitions. FIG. 1 shows the proposed sump, general view; in fig. 2 - paSpes A A in FIG. one.

In the upper part of the housing 1 there is a shelving load placed in the brightening chamber 2 and the sediment compaction chamber 3, along the ends of the upper shelf loading in the casing 1 there is a shawl collector 4 of the system of in-depth removal of clarified water with a height of 0.6-12 mm and also collectors 5, connected by pipeline 6 to the water storage device 7, control valve 8 is installed on the pipe 6.

The bottom shelf of the shelf load, placed in chamber 3, is designed as an oblique obelisk, which is separated from the sealing zone by non-parallel ends by a partition 9, between the bottom of the shelf load of chamber 3 and the base of the pyramid 10 there is a shelf 11 with a height of 1-1.5 cm, connecting zone of suspended sediment 12 and zone of compaction of sediment 13.

In the upper part of the clarifier there is a system of pipes or trays 14 for collecting clarified water into the accumulator 7. Three pyramids are located in the lower part of the settler, from which polluted runoff is fed through the middle pyramid and condensed sediment is discharged through the two extreme ones.

The sump works as follows. The coagulated effluent through the nozzle of the central pyramid is fed into the zone of suspended sediment 12, and then into the lower part of the shelf loading chamber 3. Through the shell 11 into the seal zones 13 a small portion of suspended sediment (heavy particles) is removed, which cannot be carried by the stream into the zone compaction through the shelf loading of chamber 3. From the lower chamber 3 the suspended sediment is carried into the upper chamber 2, which is 2-3 times wider than the lower one.

Polochnaya loading chamber 2 is additionally provided on the ends of a recessed slotted collector 4, through which 20-40% of the clarified drain is taken due to an adjustable discharge through pipelines 6 equipped with adjusting fittings 8 ..

Due to such a constructive solution, the fluid flow in the clarification chamber 2 is greatly expanded, its speed of movement decreases as the level of contamination decreases, and consequently, favorable conditions for the deposition of suspended particles are created. Particles deposited on the shelves of the chamber 2 move under the action of gravitational forces into the compaction zone 13, the sediment condenses and is periodically discharged from the device.

The clarified water from the upper part of the clarifier through the trays 14 is discharged into the accumulator 7 of the clarified water, where it is mixed with the clarified water supplied through the pipelines 6.

With the productivity of clarifier 20 in the lower part of the central pyramid, it is necessary to locate gravel loading.

The creation of a clarifier of considerable productivity and small dimensions allows one to adjust their industrial output, to complete technological lines with blocks of treatment facilities, which is especially advantageous in local technological systems of circulating water supply.

Claims (1)

Invention Formula A sump for water clarification, including a housing with chambers for introducing initial water, 1 clarification with a pack of parallel plates and a sediment compaction, characterized in that, to intensify water clarification, the housing is made in section in the form of a reverse rectangular trapezium, the plates are installed throughout a section parallel to the inclined side wall, wherein the device is provided with partitions placed under the plate pack and an additional 5 plate pack located in the chamber entering the initial birth between the partitions. Sources of information taken into account during the examination 1. USSR author's certificate N 446472, cl. C 02 C 1/26, 1977.