SU644428A1 - Water aeration and purification apparatus to fish-breeding installations - Google Patents

Description

water, and the compartments are interconnected at the top of the tank by means of a hydraulic shutter.

It is advisable to make the hydraulic shutter of two plates each having flanging and attached respectively to the upper part of the vertical partition and to the upper part of the container.

It is also advisable to fix plastips in a compartment for foaming water on the walls at an angle to them, arranged in staggered order.

In addition, the target is achieved by the fact that a filter is placed between the branches of the C-shaped channel.

FIG. 1 shows a general view of the device; in fig. 2 is a sectional view of the container along the A-L in FIG. one.

A device for aeration and purification of water to installations for keeping fish includes a tank 1, a pressure pipe 2 for circulating water, in which a tank for keeping live fish, a pump, a device for thermal treatment of water (not shown) and aerating device -i for supplying an aerating agent (ozone, oxygen, air) to water.

The tank /, made in the form of a column, is divided by a vertical non-partition 4 into compartment 5 for foaming water and compartment 6 for pure water. Compartment 6 communicates with the pressure pipe 2. The tank 7 is equipped with a pipe 7 for removing the foam. The upper part of the tank / is made in an outward truncated pyramid to ensure a smooth transition from the cross section of the tank 1 to the cross section of the pipeline 7, and the latter is connected to the compartment 5. If necessary, a collector for dirt and foam is installed on the pipeline 7. In the lower part of the tank / C-shaped channel 8 of variable cross section is made.

Upper branch 9 of channel 8 in the plan of a polypropylene in the form of a bell. In the upper wall of the upper branch 9, there are openings 10 for the release of the aerating agent. The input part of the upper branch 9 is communicated with the pressure pipe 2.

The lower branch 11 of channel 8 is made with a variable cross-section in the vertical plane and has a collection 12 for contamination, made in the form of a well. The collector 12 is equipped with a pipeline 13 with a shut-off valve 14.

The upper wall 15 of the lower branch / / has holes 16 for the passage of water from the channel 5 to the compartment 5.

Plate 17 is attached to the top of the tank / and plate 18 is attached to the top of the vertical partition 4. Plate 18 is inclined against the flow of water, forming a visor that serves as a baffle plate. Each of the plates 17, 18 has flanging,

made in such a way that a hydraulic shutter 19 is formed between them, by means of which a compartment 5 n compartment 6 is interconnected. In compartment 5 on the walls, plates 20 are fixed at an angle to them, arranged in a checkerboard pattern.

A filter 21 is placed between the branches 9, 11 of the C-shaped channel 8. To periodically replace the material of the filter 21, a waterproof cover 22 is installed on the side wall of the container 1.

The device works as follows.

Water from the tank / for keeping fish through a pump and a pressure pipe 2 through a device for heat treatment of water (not shown) is fed to the aerating device 3, when the ejector is mixed with the aerating agent (ozone, oxygen, air) and takes the form water gas emulsion.

Then the water-gas emulsion enters the upper branch 9 of the drop 8. Passing through the channel 8 of the alternating section, the water-gas emulsion loses speed and changes direction, as a result of which it is freed from heavy impurities. This is also promoted by centrifugal forces arising at the radioactive transition from the upper branch 9 to the lower branch //. The contaminants are collected at 12. Then the water-gas emulsion passes through the openings 16 and through the filter 21, where the stream is crushed and thereby the water-gas emulsion is dispersed. At the same time, the water in the filter is cleaned of contaminants that cannot be removed during flotation.

The contaminated water from collector 12 is periodically discharged through conduit 13, for which valve 14 is opened.

The water-gas emulsion prepared in this way rises, bending the plate 2, upward from the compartment 5, moving in a loop-like manner and continuing to be saturated with oxygen. Suspended and biogenic contaminants are trapped by bubbles of the aerating agent, i.e. flotation occurs. Separation takes place in the upper part of compartment 5 - separation of foam formed during flotation from water.

Efficient separation is facilitated by the hydraulic shutter 19, which eliminates the penetration of foam, foam and biogenic elements into the compartment 6 for clean water, even in marine waters while the vessel is rolling. At the same time, a smooth transition from the cross section of the compartment 5 to the cross section of the pipeline 7 reduces the resistance of the yen to movement and facilitates its removal through the pipeline 7. Next, the water is saturated with oxygen and freed from contamination and foam, the passage through the hydraulic gate 19 between the plates 17, 18 and the compartment 6 , via the pressure line 2 enters the tank for keeping live fish. For intermittent