BG2998U1 - Suspension fine particle precipitation installation - Google Patents

Abstract

The suspension fine particle precipitation installation can find application in the clarification of water in dams, water storages, tailings ponds, sediment traps, lakes, reservoirs, etc. It can be used to separate particles by size and relative weight. The purpose of the suspension fine particle precipitation installation is to create favourable conditions for precipitation in the reservoirs themselves of solid fine particles by gravitational forces. This problem is solved by mounting a barrier (1) transversely to the direction of movement of the inlet suspension in the water basin, in this case of a dam, so that its upper end is above the surface (2) of the water and its lower end is submerged at a certain depth nonreaching the bottom. The barrier (1) divides the dam into two parts, which are communicating vessels and the direct path of the incoming non cleared water from the point of entering the dam (3) to the point of drainage (4) through the spillway or water tower is hindered. This lengthens the path that the unsettled suspension traverses and hence the time required to clarify the fine solids. The water basin itself, together with the barrier, constitute the precipitation installation.

Description

Field of technology

The facility for sedimentation of fine particles from suspensions can be used for clarification of water in dams, reservoirs, tailings, sedimentation tanks, lakes, reservoirs, etc. It can also be used to separate particles by size and relative weight.

BACKGROUND OF THE INVENTION

For sedimentation of fine particles in dams, reservoirs, tailings, sediments and reservoirs, they. to clarify the water in them, the fact is used that they are large - length, width and depth, and the time from the entry of turbid water / suspension / in the reservoir to its outflow through the overflow is quite large, so they can settle. many of the fine particles. In most cases, however, the time for complete sedimentation and clarification of the water in these reservoirs under the action of gravitational forces is insufficient. This is due to surface currents, wind and waves, which constantly blur the surface layer and reduce the efficiency of sedimentation. In all these cases, the residence time of the suspension in the reservoir, when at rest or moving laminar, without turbulence, is decisive for the degree of sedimentation.

Technical essence of the utility model

The task of the facility for sedimentation of fine particles from suspensions is to create favorable conditions for sedimentation in the reservoirs themselves - dams, reservoirs, tailings, sedimentation tanks, reservoirs, etc., of solid fine particles under the action of gravitational forces.

This task is realized by installing a barrier across the direction of movement of the incoming suspension in the reservoir - dam, reservoir, tailings, sediment, reservoir, so that its upper end is above the water surface and the lower end is immersed to a certain depth, not reaching the bottom. The barrier divides the reservoir into two parts, which are connected vessels, and the direct path of the incoming unexplained suspension from the point of entry into the reservoir to the point of outflow is obstructed. The reservoir itself, together with the barrier, is the sedimentation facility.

The barrier may be not just one, but several placed in different places and immersed at different depths, if necessary, when the incoming suspension enters from several places in the reservoir.

Explanation of the attached figures

Figure 1 shows a section of a dam and the transversely mounted barrier.

Figure 2 shows a top view of the same dam and the installed barrier.

Figure 3 shows a dam, top view, on which several barriers are mounted.

Exemplary implementation of the utility model

An exemplary embodiment of the facility for sedimentation of fine particles of suspensions in reservoirs - dams, reservoirs, tailings, sedimentation tanks, reservoirs and other vessels, in this case a dam, is illustrated schematically in fig. 1 and FIG. 2.

In order to increase the residence time of the water in the dam, a barrier 1 is placed, the upper end of which is above the surface of the water 2, and the lower end is immersed to a certain depth, reaching the bottom, depending on the length, width and depth of the dam. . The barrier 1 divides the dam into two parts, which are connected vessels and the direct path of the incoming unexplained water from the point of entry into the dam 3 to the point of outflow 4 through the overflow of the dam wall or through the water tower is blocked.

In FIG. 3 shows a top view of a dam on which several barriers 1 are installed, which block the direct path of the incoming unexplained water, near the place of entry 3.

Application of the facility

The facility for sedimentation of fine particles from suspensions, by forcibly feeding into the depth of the initial suspension, in the case of a dam it is the unexplained incoming water, is realized

1615 Descriptions to utility model registration certificates № 10.2 / 31.10.2018 as follows. The installed barrier 1 divides the dam into two parts, which are connected vessels. The unclarified water coming from the river flowing into the first part of the dam before the dam causes the passage of water from the lower layers of the dam, which are at the level of the lower end of the dam, to the second part of the dam after the dam. The inflow of water in the second part of the dam at the level of the lower end of the barrier causes the already clarified water to flow through the overflow of the dam wall 4, where the place of drainage is or through the water tower.

The unexplained water flowing into the dam first begins to move downwards, to a depth to the lower end of the dam reaching the bottom, then passes into a horizontal stream below the dam, and in the second part of the dam behind the dam begins to move upwards until reaches the surface layer and then leaves the dam. The forced path that the water has to travel is significantly extended and the residence time of the unexplained water in the dam is increased.

Depending on the depth at which the barrier is immersed, the residence time of the unexplained water from entering the dam to the drain can be adjusted in a wide range. For each dam, the depth at which the barrier is immersed can be determined specifically, so that the time of its stay in it is completely sufficient for the complete sedimentation of even the finest solid particles, even if it meets the requirements for water clarification. for drinking purposes.

Because the water flowing from the second part of the dam comes from a greater depth, as a result its temperature in the summer months will be lower, and in the winter months higher than its temperature, if the barrier is not placed. .

As the water requirements on both sides of the barrier are the same, it is not subject to load and there are no special requirements for it. It can be made of plastic or other boards that descend to a certain depth from a light pontoon bridge, the barrier itself can be floating or hanging on a rope, which is supported above the water by small floating platforms or floats strung on the rope, and the barrier is made of strong tarpaulin to be lowered like a curtain from the rope with floats to the required depth. The barrier does not have to be located in the dam in a straight line.

If the level of the dam rises during prolonged rains or decreases during drought, then the barrier itself rises or falls down along with the water level, as it is floating.

If several rivers and streams flow into the dam, several dams can be installed, each near the mouth of the flowing river and submerged at different depths, if necessary.

Claims (2)

Claims Device for settling fine particles of suspensions, characterized in that it consists of a barrier (1) which is mounted transversely to the dam, reservoir, tailings pond, sedimentation tank or reservoir, the upper end of which is above the surface (2) , and the lower end is immersed to a certain depth, not reaching the bottom, so that the barrier divides the reservoir into two parts, which are connected vessels and the direct path of the incoming suspension from the point of entry (3) to the point of outflow (4) is prevented . Device for settling fine particles of suspensions according to claim 1, characterized in that more than one barrier (1) immersed at a certain depth in the reservoir is installed.