The aeration oxygenation machine represents a new production-enhancing technology that follows the traditional methods of water-wheel, impeller, and spray-type techniques. It consists of three main components: a fan, gas pipelines, and a shared baseplate. Using a Roots blower, air is forced into a water delivery pipe, and the compressed air then flows through a plastic hose into a microporous aeration plate.

What are the advantages of an aeration and oxygenation machine?

The aeration oxygenation machine represents a new production-enhancing technology that follows the traditional methods of water-wheel, impeller, and spray-type techniques. It consists of three main components: a fan, a gas pipeline, and a shared baseplate. Using a Roots blower, air is forced into a water delivery pipe. The compressed air then flows through a plastic hose and enters a microporous aeration plate, where it is dispersed into tiny bubbles. As these microbubbles rise from the bottom, some of the oxygen dissolves into the water, while simultaneously generating upward and downward water convection and rotation, thereby achieving thorough water exchange and uniform oxygenation throughout the water body.

What are the advantages of an aeration and oxygenation machine?

1. Both the upper and lower aquifers can increase oxygen production, enhancing the three-dimensional aeration effect.

The aeration oxygenator can directly discharge air from the water storage layer, significantly increasing the dissolved oxygen levels in both the bottom and middle layers of the water. As the bubbles rise and float, they induce upward flow of the bottom water, facilitating the exchange of water between the upper and lower layers and ensuring uniform productivity throughout the entire pond. The tiny bubbles released by the micro-pores have a large contact area with the water, resulting in strong dissolving power and thus extremely high oxygenation speed and efficiency.

2. Improve the aquatic ecological environment and prevent water quality deterioration.

The research results indicate that the aeration oxygenator reduces ammonia-nitrogen levels in water bodies more effectively than impeller-type and paddle-wheel-type aerators. Whether using paddle-wheel or impeller-type aerators, their effect on increasing oxygen levels in the reservoir layer is relatively poor. In particular, when the water depth exceeds 2 meters, the bottom layer of water tends to become hypoxic. The aeration oxygenator can address this shortcoming by compressing small air bubbles and discharging them from the bottom of the water body, thereby directly boosting the dissolved oxygen concentration at the bottom. Additionally, it can also draw lower-layer sewage into the upper layers where dissolved oxygen levels are higher; through bacterial nitrification, ammonia-nitrogen is converted into harmless nitrate, which can then be utilized by algae, thus reducing both ammonia-nitrogen levels and overall concentrations.

3. Low energy consumption per unit area, reducing breeding costs.

Compared with paddle-wheel, impeller, and spray-type aerators, micro-pore aeration systems—with the same power rating and equivalent surface area—achieve the fastest oxygenation rate and deliver the best oxygenation performance. In terms of power consumption, micro-pore aerators require only 0.1 to 0.3 kilowatts per mu, representing just 30% to 40% of the power needed by conventional aeration equipment. This significantly reduces energy consumption. Moreover, as water depth increases, if the air supply remains constant, the power efficiency of micro-pore aeration systems will also improve.

4. Low noise, high safety performance

Traditional aeration equipment is directly installed in the water and generates significant noise during operation, which can disturb fish and shrimp. Moreover, there’s a risk of leakage from the motor and cables, posing potential hazards to aquatic organisms and making maintenance inconvenient. By contrast, micro-pore aeration systems have their power units located on shore; only the gas hose and the micro-pore diffusers are submerged in the water. As a result, there’s no risk of electrical cables getting wet, making maintenance much easier. The noise generated by these systems has minimal impact on underwater aquaculture animals—especially shrimp and crab farms—thus reducing stress responses in these species.

Aeration oxygenators have many advantages, but they also come with certain drawbacks. For example, surface-aeration oxygenators lack the leaf-like aeration effect and have limited water-mixing capacity; while their installation is relatively simple, micro-pore oxygenators have already won favor among aquaculture farmers due to their excellent performance in production. By combining the strengths of various productivity-enhancing methods, using an aeration oxygenator together with impeller-type, paddle-wheel-type, or spray-type oxygenators can help offset their respective weaknesses and achieve optimal productivity gains.