Fish farming

SOLVOX A® reduces nitrogen and total gas pressure during the water oxygenation process. Therefore, there is normally no need for aeration of raw water. It is available in a variety of options adapted to your individual needs for tanks with a water flow ranging from 75 l/min to 9000 l/min. For the optimal solution, we recommend that you always combine SOLVOX A with SOLVOX stream.

SOLVOX ® B diffusion hose is a perforated hose used for supplying oxygen to fish tanks and for emergency oxygenation. It is also used for oxygen supply when transporting live fish and the supply of oxygen and CO2 for anaesthetising/sedating the fish. SOLVOX B dissolves oxygen in the water by small bubbles generated through the perforations in the hose. In aquaculture, diffuser hoses are used to stabilise the oxygen levels directly in the fish tank.

SOLVOX C cones are designed to increase the concentration of gases in water to a rather high level. In standard operation, the gas transfer efficiency is close to 100%. The operation the cone is simple: as water and gas enter from the top, the water jet forces the water to mix intensively with the oxygen bubbles, thus creating a high specific interface and a high turbulence at a top of the dissolver.

SOLVOX CV is an additional system to boost the oxygenation capacity of SOLVOX C cones, allowing up to 50 % higher oxygen dosing without increasing the water flow rate or energy consumption. SOLVOX CV uses a patented venturi nozzle to re-inject oxygen which is gathered at the top of the cone back into the water feed pipe. The installation can be done without any time consuming shut down. The SOLVOX CV is flanged directly onto the water feed pipe of the cone. By doing so, the water flow rate into the cone can be increased by up to 25% above nominal value, which then gives you an additional 25% increase in oxygen capacity.

SOLVOX ® CD ceramic diffusers are used to dissolve oxygen and stabilise the levels of oxygen directly in the fish tank. The ceramic diffusers can also be used for emergency oxygenation. SOLVOX CD ceramic diffusers transfers gas into water by generating micro-bubbles at low pressure (maximum pressure 3 bar). SOLVOX CD also provide an aeration/stripping effect of unwanted gases.

SOLVOX® CV is a patented product which is fitted to the water supply to the AGA oxygen cone, SOLVOX C. Inside the SOLVOX CV, specially designed nozzles are connected to a hose from the bleeder valve at the top of the cone. These nozzles create a vacuum that sucks undissolved oxygen from the top of the cone and mixes it in with the flow of water. Both “new” and re-circulated oxygen are supplied to the flow of water via the nozzles in the SOLVOX CV.

The cabinet is connected permanently to the gas pipeline network via a 22 mm oxygen pipe. The pressure on the network can be read from the pressure gauge. Compressed oxygen can quickly be connected as all the components are ready for use inside the cabinet. The cabinet is designed to be kept outdoors.

The dosing cabinet distributes and controls the oxygen from the distribution network to the tank using the customer’s own PLS system. The dosing cabinet is divided into two separate sections, one for normal operation and one for emergencies. The oxygen used for operation is dosed through two rotameters. One of the rotameters feeds oxygen for normal consumption and has to be adjusted gradually according to the oxygen consumption. The other rotameter is fitted in series with a solenoid valve. This valve is controlled by the output saturation in the tank and opens to allow additional oxygen when needed, to keep the oxygen saturation at a constant level in the fish tank.

SOLVOX ® Mix makes it possible to mix water with high oxygen saturation into a main flow without degassing and reduced efficiency. It is especially adapted nozzle unit used in conjunction with installations with SOLVOX ® C (cone). SOLVOX ® Mix is used when pressurized, highly oxygenated water from SOLVOX ® C is to return to a water stream that has a lower pressure.It can be installed at tank level for individual oxygenation, or in the main water supply to the plant to provide basic oxygenation.

SOLVOX ® OxyStream is a low-pressure oxygenation system for vessels with seawater, brackish water and fresh water. The microbubbles created by SOLVOX Oxystream reduce the concentration of dissolved nitrogen and the total gas pressure of the water. Due to this beneficial effect, external degassing units have become obsolete in many cases. SOLVOX Oxystream achieves maximum effect beginning at about 15‰ salinity and requires a pressure of merely 0.05–0.2 barg to oxygenate the water, strip nitrogen, and create optimal tank hydrodynamics for fish production. The low pressure requirement makes the system very energy-efficient.

SOLVOX® Stream creates a better tank environment and improves the well-being of the fish. It provides good tank hydraulics and even oxygen distribution throughout the water volume. SOLVOX® Stream creates a better tank environment and improves the well-being of the fish. It provides good tank hydraulics and even oxygen distribution throughout the water volume.

We supply rotameters in various sizes with capacities ranging from 0.4 kg O2/hour to 9.0 kg O2/hour at a pressure of 6 bar (maximum operational pressure 10 bar). At other pressures the capacity is corrected using tables in our datasheet.

Handy Polaris is simple to use and has a straightforward menu. It takes fast and accurate measurements/logging of O2 and temperature in both salt and fresh water.