Fish farming in recirculating aquaculture systems is the top of production intensification, that allows to get the maximum output per unit area or volume of fish tanks with minimal water consumption.

The placement of production facilities in closed spaces allows for efficient year-round production, regardless of the climatic conditions of the area, the location of the enterprise and the availability of significant water resources. Low fresh water consumption ensures minimal environmental impact.

The principle of operation of recirculating aquaculture systems. The name " recirculating aquaculture systems" literally implies complete regeneration of water and its use an infinite number of times for the purpose of water supply of fish-breeding tanks. Recirculating aquaculture systems should be drainless. The recirculating aquaculture systems equipment complex performs:

• - complete purification of water from organic contaminants during fish farming;
• - restoration of the chemical, including gas, regime of water;
• - maintaining its sanitary condition at a sufficient and safe level for cultivation objects;
• - ensuring the required temperature conditions for maximum production efficiency.

ERKANA TURKMEN professionally engaged in the production, installation and commissioning of recirculating aquaculture systems for growing commercial fish species, including sturgeon. All equipment: pools, drum filters and biofilters, oxygenators, flotation devices, UV sterilizers and much more is manufactured at the company's production site, which allows us to provide quality guarantees for each product.

Main equipment components of the recirculating aquaculture systems.The structural scheme of the recirculating aquaculture systems consists of the following elements::

• - fish-breeding tanks (pools);
• - pipelines with on-off and control valves for supplying water to fish-breeding pools and draining polluted water through a cleaning system;
• - mechanical purification equipment for recirculated water;
• - aerobic biological water purification equipment;
• - secondary mechanical filters installed after biological water purification equipment;
• - equipment for disinfection or reduction of bacterial contamination of circulating water;
• - aeration or oxygenation equipment of circulating water;
• - pH control equipment;
• - fresh water recharge system;
• - thermoregulation system (heating or cooling);
• - control and regulating equipment.
•