Abstract
Traditional planting and aquaculture has the problem of large consumption of water resources and land resources, and the water environmental pollution is also a difficult problem facing human beings. Population growth and food safety issues have promoted the concept of aquaponics——a recycling ecological planting and breeding mode. It combines hydroponics and recirculating aquaculture technology to realize water resources and nutrient recycling, low pollution and high productivity and efficiency. In this paper, hydroponics as the main vegetable cultivation method in aquaponics and the main equipment of water treatment in recirculating aquaculture are introduced, and the traditional equipment and its development prospects are analyzed. The greenhouse environments, water quality and nutrient circulation involved in intelligent monitoring and control of aquaponic systems are systematically analyzed and summarized. This paper summarizes the current development of technology and methods in aquaponics and provides prospects for future development trends. With the development of technology, in the future, the aquaponics system will become more intelligent, intensive, accurate and efficient.
Highlights
Aquaponics is a new technology in modern agricultural production that combines aquaculture with hydroponics
The results showed that the plant growth rate and yield of the aquaponics system with mechanical filtration were the highest, and there was adequate quality of water
Carbon dioxide can be removed and dissolved oxygen (DO) can be provided with saturation greater than 90%, but a higher flow rate is needed to ensure the expansion of the filter bed and its full contact with the filter material [105]
Summary
Aquaponics is a new technology in modern agricultural production that combines aquaculture with hydroponics. Aquaponic systems have mature planting technology and culture equipment in vegetable cultivation and recirculating aquaculture. EQUIPMENT IN RECIRCULATING AQUACULTURE SYSTEMS OF AQUAPONICS Recirculating aquaculture is a water-saving, efficient, environmentally friendly production and aquaculture mode; through a series of water treatment processes, RASs provide opportunities to reduce water usage, improve waste management and nutrient recycling [67]. Because aquaculture wastewater contains a large amount of N elements needed for vegetable growth, attempts have been made to use fish wastewater for plant nutrition through aquaponic systems [39]. Under the premise of healthy fish growth, the automatic circulation of aquaculture water can be achieved, and more economic benefits can be obtained This method promotes the whole aquaponics system to realize intelligent monitoring and control
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