SU1212962A1 - Floating machine - Google Patents

Description

2. The flotation cell according to claim 1, wherein the perforated pipes are perpendicular to the pipelines for supplying the water to air mixture, and the receiving pocket is attached to the side wall of the housing.

one

The invention relates to devices for treating water, industrial and domestic wastewater, and is intended for clarifying liquids, removing surfactants, for pretreating wastewater before their biochemical purification, and can be used for separating sludge mixtures, sediment compaction, in the process of enrichment of ores, etc.

The purpose of the invention is to improve the quality of water purification by ensuring the internal circulation of the flow and improving the saturation of water with air, simplifying the design and increasing its compactness.

Figure 1 shows the flotation cell, a plan (without a mechanism for removing pen1); figure 2 - section aa in Fig .; on fig.Z - section BB in figure 1; Fig. 4 shows the flotation device, a plan, a preferred embodiment (without a mechanism for removing foam.

The flotation cell includes a housing 1, inside which sequentially from top to bottom there are paired partitions 2, diamond-shaped reflectors 3 and perforated pipes 4, on which inverted V-o6pas trenches 5 are mounted on top. Pipe partitions 6 are located for partitions of the air-air mixture, connected to pipe 7. On the outer side, foam container 8 is attached to the body 1, which is connected to the upper part of the body. 1 with a foam removal mechanism 9, and a receiving pocket 10 communicated with pipes 4. The collecting container 8 is provided with a pipe 11 for discharging foam, and the receiving pocket 10 with a partition 12 and a pipeline 13 for discharging treated water. The body has a pyramidal bottom 14 with a pipeline 15

3. The flotation cell according to claim 1, in relation to the fact that the perforated pipes are arranged in parallel, to the pipelines for supplying an air-water mixture between; 1: for pairs of partitions.

for removal of non-floated impurities and emptying. The pipes 4 are placed: parallel to the pipelines 6 (Figures 1-3) between the pairs of partitions 2 or perpendicular to them (Figure 4. In the latter case, the receiving pocket 10 is fixed to the side wall of the housing 1.

The flotation cell works as follows.

Exhaust water is mixed with air and the initially formed water-air mixture through the supply pipeline 7 is fed into the pipelines 6. The water supply system; the formation of a water-air mixture, 60-80% of puzgrykov in which have a size less than 500 microns. At the same time, when crushing puzers, oxygen dissolves in water and it is intense. Further, the flow due to the energy of the jets and the difference in densities of the water-air mixture between the partitions 2 and the water, which is poor in air bubbles, between the pairs of partitions moves up and pours out below the water level above the vertical edges of the partitions 2.

During the flow of the flow through it, due to the high turbulence, the conditions necessary for the merging of bubbles with particles are provided.

contamination. With a spout, the flow is divided into two parts and changes its direction of rotation - it turns 180. Such a mode, as well as a thin layer of water over the KaivJH partition, contribute to intensive sedimentation.

The foam splashes to the surface, is pinched by the scrapers of the mechanism 9 to remove the foam and, through the upper edge of the housing wall I, is transferred to the foam collector 8, from which the foam flows by gravity or is forcibly removed through the pipeline P. The flow is 70% or more free from air bubbles moving from top to bottom between pairs of partitions 2. Its movement becomes laminar, which contributes to the separation of more parts of puffs that rise towards the next portions of water, while sorbiruing previously unfused contaminants. Then the flow in each of the zones between the pairs of partitions 2 reaches the bottom of the partitions. Here the side edges of the rhomboid reflectors 3 block the path to it, somewhat narrowing the living section. Due to this resistance and the ejecting effect, the side jets of flow are entrained under the lower edges of the partitions 2, saturated with air bubbles and dissolved oxygen, and again pass the indicated cycle.

Medium jets, passing with increased speed, the place of narrowing, fall into the zone with the maximum area of the living section equal to the area of the living section of housing 1, and according to the law of continuity of the flow, they lose the speed to the minimum possible. The smallest bubbles, entrained by the flow downwards, are able to ascend and rise up to the level of diamond-shaped reflectors 3. Here they collide with the opposite (from top to bottom) directional flow that overcomes the constriction at a higher rate. The bubbles are carried away by the flow of speed downward, fall into the zone of minimum speeds and re-emerge, forming a bubble filter. As bubbles build up in the filter, they merge.

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enlarge and periodically float, giving way to a new, smaller one. This is the regeneration of the continuous filter update.

5 Water, passed multiple

Circulation in the upper part of the housing 1 with parallel countercurrent movement towards the emerging bubbles between the pairs of partitions, is filtered through the bubble filter, freed from the smallest bubbles and approaches the lower edges of the inverted V-shaped grooves of the drainage unit of the treated water. Due to the V-shaped gutters 5, the stream flows around them smoothly, gradually increasing the speed of movement vertically downwards. At the same time, the speed of unspinned particles also increases. Further, the flow goes around the lower edges of the inverted grooves 5 and rotates by 180. At the same time, due to the increased speed, the unpleted impurities skip the grooves

25 5, they are deposited on the bottom 14 of the housing 1 and, as they accumulate, are removed through the pipeline 15. The flow inside the channel 5, which plays the role of a settling tank, moves upwards to the holes in

30 perforated pipes 4.

The treated water from the pipes 4 enters the receiving pocket 10, is poured through the overflow wall 12 required for a stable level in the floater, and is discharged through the pipeline 13. To reduce the height of the housing 1 and improve the separation of the smallest bubbles, the pipe 5 is positioned under the 40 3 along the axis of the pairs of partitions 2 parallel to the pipelines 6 or, in a preferred embodiment, perpendicular to the pipelines 6. In this case, the flow moves

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Claims (3)

1. FLOTATOR containing a rectangular case with paired parallel partitions, between which pipelines for supplying an air-water mixture are placed ^ a mechanism for removing foam with a foam collector and a waste water outlet with a receiving pocket, characterized in that, in order to improve quality purification of water by ensuring internal circulation of the flow and improving its numbness with air, simplifying the design and increasing its compactness, partitions are installed in the upper part of the body and equipped with located under it Lozenge reflectors, and an output unit provided parallel perforated pipes defined above them obraznmi inverted V-grooves, communicating with the receiving pocket. 2. A flotator according to claim,, with the fact that the perforated pipes are perpendicular to the pipelines for supplying the air-water mixture, and the receiving pocket is attached to the side wall of the housing. 3. Flotator in π. 1, due to the fact that the perforated pipes are arranged parallel to the pipelines for supplying the air-water mixture between the pairs of partitions.