The seawater factory aquaculture system mainly targets high-quality, high-density, and high value-added varieties. Such as grouper, shrimp, abalone, etc. In order to cope with external factors such as water source pollution and weather changes, the aquaculture system is installed indoors. Treat the water according to the actual needs of the aquaculture species. In order to achieve comprehensive benefits of high density, high efficiency, low cost, low pollution, automation, and off-season.
The seawater factory aquaculture system includes mechanical filtration system, biochemical filtration system and other subsystems. The core is the biochemical filtration system. Because the amount of water changed is very small or not changed at all. Excessive breeding density can lead to a sharp increase in ammonia nitrogen and nitrite in the water. Using equipment such as microfiltration machines and protein separators to filter out solid suspended solids such as fish and shrimp feces in the first place, avoiding these substances from becoming toxic substances in water due to the decomposition of bacteria. Decomposed ammonia nitrogen and nitrite can cause fish and shrimp to die from hypoxia or poisoning. We use the method of placing filter media in biological filters and cultivating beneficial bacteria to decompose ammonia nitrogen and nitrite in water.
The relationship between the substances contained in water and the corresponding filtration equipment is shown in the following figure: Microfiltrers, protein separators, and biofilters are the main equipment in factory aquaculture systems:
Because the protein separator has a large number of bubbles in the water during operation, it has a strong oxygenation effect. Therefore, in the presence of protein separators, it can be considered not to use oxygenation equipment.
The constant temperature system can use a heat pump or a chiller. Some places in the north also have automated boilers. When configuring constant temperature equipment, the insulation conditions of the factory building and fish pond should be considered. Moreover, the constant temperature device cannot heat or cool the water to the target temperature at once during operation, but gradually increases the overall temperature of the water to the desired temperature through multiple cycles.
In terms of sterilization, ozone and protein separators are used together, and the protein separator also serves as an ozone mixing tower. But due to long-term cycling, ozone can have a negative impact on biological filters. Therefore, for long-term operating circulating water systems, we recommend using ultraviolet sterilizers to sterilize and disinfect the water. Appropriate salinity is crucial for marine aquatic organisms. Especially shrimp and crabs. Because they require a large amount of minerals to maintain their molting needs. Therefore, maintaining the concentration of various types of ions in water bodies is one of the important tasks.
There are many factors that affect pH value. Including dissolved oxygen, algal phase, temperature, etc. Therefore, maintaining a dynamic balance of pH value is an important condition for maintaining good biological growth.
Most aquatic organisms are stressed by drastic changes in water indicators. The balance and controllability of various indicators in the water body, as well as the qualification of key indicators, are the core contents of the seawater factory aquaculture system.
The system should be designed based on the customer's on-site situation, breeding density, and other conditions, taking into account the maximum energy saving and environmental protection. And it can generate maximum production efficiency.
