Oxygen fighters are essential for the stable maintenance of dissolved oxygen (DO) in land-based aquaculture (RAS).
High Concentration Gas Dissolution Device - Oxygen Fighter
Recovering stable maintenance and rapid decline of DO with oxygen fighters to create a healthy underwater environment.
In land-based aquaculture, the management of DO (dissolved oxygen) and water quality is the top priority that affects productivity. The respiration of cultured organisms, as well as the decomposition of organic matter from waste and residues, and the nitrification of ammonia, continuously consume large amounts of oxygen in the water. 【Points to Note for Pure Oxygen Introduction and the Benefits of "No Bubbles"】 With conventional aeration and water wheels, it is difficult to obtain sufficient DO due to the influence of nitrogen in the air, which is why the introduction of pure oxygen is currently advancing. However, traditional pure oxygen bubbling can excessively stimulate fish and has the disadvantage of causing water vapor and gas loss. The "Oxygen Fighter" dissolves oxygen directly into the water with minimal bubble production. Therefore, it can be installed directly in aquaculture ponds without stressing the fish, allowing for high-density farming and retrofitting without the need for expansion of facilities. Since no bubbles are produced, gas loss is minimized. 【Main Features and Lineup】 Range of Models: A total of 24 models covering both freshwater and seawater Maximum Flow Rate: Covers a wide range from 60L/min to 5000L/min It is possible to select the optimal model according to the scale of the aquaculture pond. Please consider it for recovering from rapid DO declines and creating a healthy underwater environment.
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basic information
We have a total of 20 models with a maximum flow rate of 60L/min to 5000L/min, including both fresh and seawater. Our company sets the performance standard for dissolved oxygen at 20.0mg/L to 25.0mg/L during one pass (water flow). We will suggest the appropriate model selection based on the required oxygen amount, so please feel free to contact us first.
Price information
The price varies depending on the specifications and model of the device, so please feel free to contact us.
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Applications/Examples of results
○Aquaculture - Eel, sweetfish, trout, carp, salmon, silver salmon, shrimp, sturgeon, abalone... various types of land-based aquaculture ○River and Lake Purification - Implementation of river and lake purification projects both domestically and internationally - Adoption of JICA projects
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At Daiei Manufacturing Co., Ltd., Environmental Division, we propose a high-concentration oxygen dissolution device as an alternative to conventional aeration methods. We aim to contribute to the establishment of a healthy social environment by utilizing this oxygen dissolution technology. In rivers and lakes, we create a saturated dissolved oxygen state near the bottom, promoting the activation of aerobic microbial communities. In industrial wastewater, high concentrations of dissolved oxygen have also made it possible to address high-load, high-density activated sludge (microorganisms). It is also used for the dissolution of gases other than oxygen.



