Aeration is an important technical measure in aquaculture, which can increase the dissolved oxygen content in the water body and promote the growth and reproduction of aquatic organisms. Here are a few ways to increase oxygen:
1. Mechanical oxygenation.
Mechanical oxygenation refers to the mechanical injection of air or oxygen into a body of water, thereby increasing the amount of dissolved oxygen in the body of water. Commonly used mechanical aeration equipment are:
1.Blowers: Blowers can force air or oxygen into water bodies to increase the amount of dissolved oxygen in them. When using a blower to increase oxygen, it is necessary to reasonably adjust the flow and pressure of the gas so that the gas can be evenly dispersed into the water body.
2.Microporous aerator: A microporous aerator is a high-efficiency aeration device that disperses air or oxygen into fine bubbles through a microporous aeration disc to increase the dissolved oxygen content in the water body. The advantages of microporous aerators are good oxygenation effect, low energy consumption, and long service life, but the installation and maintenance costs are high.
2. Chemical oxygenation.
Chemical oxygenation refers to the increase of dissolved oxygen content in a body of water by adding chemicals to it to produce oxygen or promote the dissolution of oxygen in the body of water. Commonly used chemical oxidizers are:
1.Calcium peroxide: Calcium peroxide is a commonly used chemical oxygenator that reacts with water to produce oxygen and increase the dissolved oxygen content in the water body. The advantages of calcium peroxide are that it has a good oxygenation effect, is easy to use, and low cost, but excessive use can cause harm to aquatic organisms.
2.Metal salts: Some metal salts can react with water to produce oxygen, increasing the dissolved oxygen content in the water body. For example, nitrates, permanganates, etc. When using metal salts for oxygenation, it is necessary to reasonably control the dosage to avoid harm to aquatic organisms.
3. Biological oxygenation.
Biological oxygenation refers to increasing the dissolved oxygen content in water by increasing the number of aerobic microorganisms in the water body, promoting the decomposition of organic matter and the production of oxygen. Commonly used biological aeration methods are:
1.Cultivating algae: Algae is a photosynthetic microorganism that can produce oxygen through photosynthesis, increasing the amount of dissolved oxygen in water bodies. When cultivating algae, it is necessary to reasonably control environmental factors such as light, temperature, and nutrients to promote the growth and reproduction of algae.
2.Biological carrier: A biological carrier is a substance that can provide microorganisms for attachment and growth, such as sand, gravel, foam, etc. By introducing biological carriers, the number of aerobic microorganisms in the water body can be increased, and the decomposition of organic matter and the production of oxygen can be promoted. When using biological carriers, they need to be cleaned and maintained regularly to avoid the growth of harmful microorganisms on the carriers.
To sum up, there are many ways to increase oxygen, and the appropriate method can be selected according to the actual situation. When using aeration methods, it is necessary to reasonably control the flow rate of gas, pressure, chemical dosage and other parameters to avoid harm to aquatic organisms. At the same time, it is also necessary to pay attention to the maintenance and maintenance of the equipment to ensure the normal operation and use of the equipment.