About RAS
One of the main advantages of a Recirculation Aquaculture System (RAS) is that it maintains a perfect environment with superior water quality at minimum cost. All significant water parameters are monitored online and adjusted accordingly; ensuring optimal fish health and growth.
Together with an optimal environment for fish rearing in tank design and operation, and customized grading and feeding solutions, this is the foundation for predictable aquaculture production and superior harvesting quality for all species.
Essentials of Successful RAS Farming
eWater is focused on the development and manufacturing of industrial recirculating aquaculture system, drum filters, protein skimmers, biological filters, aeration equipment, disinfection equipment (ozone disinfection equipment and UV sterilizer), heat pumps and water quality monitor equipment.
RAS processes and the necessary equipment
eWater is focused on the development and manufacturing of industrial recirculating aquaculture system, drum filters, protein skimmers, biological filters, aeration equipment, disinfection equipment (ozone disinfection equipment and UV sterilizer), heat pumps and water quality monitor equipment.
| Process | Necessary Equipment |
|---|---|
| Biofiltration | Denitrifying biofilter, MBBR process |
| Solids Removal | Drum filter, sand filter, protein skimmer |
| Re-oxygenating | Oxygen cone or low pressure oxygenating device |
| PH Control | Degassing device |
| Temperature Control | Submerged heaters, heat pumps, chillers or heat exchangers |
| Biosecurity | UV sterilizer, ozone generator |
RAS Installation Notes
Fish pond leakage test: When there is a leakage situation, focus on checking the seal of the fish toilet position, whether the foundation of the fish pond is settling.
Equipment stand-alone commissioning: All equipment stand-alone commissioning should not work for a long time.
Pipe leakage test: Check the leakage situation should be checked one by one pipeline.
Joint adjustment preparation: Before opening the circulation pump, the valves in the inlet and return pipelines must be checked to be fully open to avoid damage to the equipment..
Microfilter: When the water level inside the microfilter needs to be raised is low, add an upward elbow out of the outlet.
Protein separator: Solenoid valve installed in reverse will result in the inability to close.
High efficiency dissolved oxygenator: Solenoid valve continuous exhaust in time to shut down the equipment, check whether the outlet pipe is blocked or off.
Heat pump: Heat pump temperature sensor should be as close as possible to the fish pond; seawater environment should try to use heat exchangers.
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