SU793532A1 - Unit for groing young fish - Google Patents

Description

The invention relates to fish farming, in particular to plants for growing juvenile fish, such as aquariums.

The well-known installation for growing juvenile fish. Includes a fish tank, a closed water circulation system with a pump, filters for rough and biological water purification and a device for aeration of water [1].

A disadvantage of the known installation is that it does not allow to grow juvenile fish in tight plantings due to insufficient water purification. In addition, the installation produces a large flow of water.

The aim of this invention is to improve the quality of water purification and thereby ensuring the cultivation of juvenile fish in tight landings.

To do this, it is equipped with at least one additional tank for fish, ozonizer flotators, an additional charcoal filter, while the biological water purification filter and fish tanks are mounted on the support column in belts, and vertical partitions are installed in the biological water purification filter and in the upper tank composing compartments, and ozonizer flotators are located in the latter, while the lower reservoir is equipped with two partitions - horizontal and vertical, also composing compartments, and the pump and fil mp coarse respectively installed in the vertical and horizontal compartments carbon filter is placed on a branch pipe for supplying water into upper reservoir for fish and for water aeration device is in the form of an injector.

In addition, the ozonizer flotator consists of a perforated pipe with a nozzle installed in its upper part with a coaxially mounted nozzle for collecting and discharging foam and a hose placed in the pipe with a spray connected to the ozone supply system.

In FIG. 1 schematically shows the installation, a General view; in FIG. 2 is the same side view, in FIG. 3 - section A — A of FIG. 2; in FIG. 4 - section B — B of FIG. 3.

The installation includes tanks 1 for growing juvenile fish, filters 2 and 3 of coarse and biological water purification, ozonizer flotators 4 and a closed water circulation system containing a pump 5 and a device 6 for aeration of water.

The biological water purification filter 3 and the tanks 1 are installed in a belt-mounted fashion on the support column 7. In the lower tank 1, two partitions are mounted: horizontal 3 * 8. and vertical 9, which form compartments in which the filter 2 for rough water treatment and pump 5 are respectively installed. 3 biological water purification and in the upper tank 1 are installed vertical partitions 10, forming compartments And, in which flotation deflectors are mounted 4. The latter are made in the form of perforated pipes, each with a nozzle 12 with a coaxial in the upper part but mounted pipe 13 for collection and removal of the foam and placed in the hose pipe 14 to spray 15 connectable to the ozone supply system. The flotation shakers 4 are enclosed in a housing 16 equipped with a tube 17 for draining water. The device 6 for aeration of water is made in the form of an injector and is connected to an additional carbon filter 18, mounted on the pipe 19 of a closed water circulation system. In the lower tank 1 for fish, a pipe 20 is installed for washing the filter 2 and removing dirty water when washing it. A closed water circulation system is connected to the pipelines 21 and 22 for supplying water from the water supply and discharge of water into the sewer. In the filter 3 biological water purification installed additional partitions 23 and 24, forming compartments, in the vertical of which there is an additional device 25 for aeration of water, also made in the form of an injector and connected to the pump 5 through a pipe 26.

In addition, in the filter 3 biological water purification mounted heater 27 with a temperature controller 28.

Installation works as follows.

To fill the reservoirs 1, a closed water circulation system is switched on by means of a pipe 21 and a pump 5, which delivers water through a pipe 26, and an additional water aeration device 25 into the compartment of the biological water treatment filter 3, passing the latter from bottom to top through sand and gravel of filter 3.

Filtered water from the vital products of aquatic organisms, mainly from ammonium compounds, enters the ozonizer flotators 4, where the mucus dissolved in it is removed from the water and the water is sterilized using ozone. Ozonator flotators 4 operate on the principle of countercurrent water and ozonized air, which contributes to good oxygen saturation of the water. From flotation ozonators 4, the water purified from the foam through the pipe 19 enters an additional charcoal filter 18, where it is additionally purified from the exchange products dissolved in it, and through the device 6 for aeration of water into the upper and lower tanks 1. Of the latter, water through the filter 2 of a coarse water purification pro793532 goes into the compartment to the pump 5. And thus the water circulation cycle is repeated.

Water aeration devices additionally saturate the water with oxygen, which is especially important at high densities of planting juvenile fish. If it is necessary to maintain a high oxygen content in the water in the injectors, pure oxygen can be used instead of air, for which purpose device 6 is connected to a compressed oxygen cylinder. The water level in the upper tank 7 and the filter 3 is maintained using level tubes 29. Filtered water can also be supplied to the tanks using level tubes 29. If necessary, an emergency discharge of water from the installation using the pipe 22.

The required water temperature in the installation is maintained using the heater 27 and thermostat 28.

The feasibility study shows that when rearing juvenile fish in this installation at high densities per cycle, about 100 thousand juvenile fish, such as carp, can be raised. This installation is very compact, economically uses the area of the workshop, and allows you to grow young carp year-round.

Claims (1)

1. Japan patent No. 47-22785, cl. 5 A 01 K 61/00, published. 1972.