Land-based seawater multi-trophic-level composite ecological breeding system

Abstract

The invention relates to a land-based seawater multi-trophic-level composite ecological breeding system. The system comprises a fish breeding module, a shrimp and crab feeding module, a shell breeding module and an algae breeding module. Each breeding module comprises multiple breeding units connected in series. Each breeding unit is provided with a water inlet and a water drainage opening. The breeding modules are provided with a common water drainage channel and a common water inflow channel. The modules are communicated with the water inflow channel through the water inlets and communicated with the water drainage channel through the water drainage openings, the water drainage channels pump water into the water inflow channel through a pump station to form a circulating water system, the water drainage openings are formed in the near bottom positions of the breeding units, and oxygenation equipment is arranged in the circulating water system. The polybasic ecological breeding system is an improvement in a common composite ecological breeding system, through the design of the circulating water system, nutritional substances are mutually utilized between the breeding modules with different trophic levels, the aim of reducing pollution is achieved, the flow speed of substance energy is increased, and finally zero-emission, low-carbon and efficient sustainable ecological breeding is achieved.

Description

technical field [0001] The invention belongs to the technical field of seawater ecological cultivation, in particular to a land-based seawater multi-trophic compound ecological cultivation system. Background technique [0002] With the continuous growth of China's population and the improvement of living standards, people have put forward higher requirements for the quality of aquatic products. However, the status quo of the world's fishery resources is not optimistic, and more important tasks for the development of aquatic products will be placed on aquaculture, but the aquaculture industry has also exposed many shortcomings. Among them, whether it is freshwater aquaculture or marine aquaculture, China's aquaculture industry relies heavily on offshore fishery resources. To a certain extent, the huge development of aquaculture industry is at the expense of offshore resources. This aquaculture model is unacceptable. continuous. In addition, existing aquaculture models usual...

AI Technical Summary

Problems solved by technology

Common comprehensive farming models include traditional Chinese mixed farming and recirculating aquaculture in separate ponds: Traditional Chinese mixed farming is usually a single-pond polyculture, and the species of the main body of the polyculture are usually restricted by their different habits and characteristics. Difficult to exert greater benefits; the sub-pond recirculating aquaculture mode is to use fish and shrimp culture to discharge water to cultivate filter-feeding aquatic animals or macroalgae. The aquaculture water is discharged or circulated into fish and shrimp culture ponds after being treated by filtration and the water quality is improved. Reuse, this is the classic land-based IMTA (multi-trophic aquaculture) mode, and the sub-pond recirculating aquaculture mode is divided into ring mode and parallel mode, but both of these methods have certain shortcomings

For example, it is difficult to effectively deal with pollutants by adopting the polarized ring connection method, and the upper-level aquaculture system will affect the lower-level aquaculture system, resulting in inability to coordinate freely between different aquaculture systems, thereby affecting the overall efficiency; , ecological ditches, biological ponds and other ecological engineering technologies and pond culture organically construct a parallel aquaculture system, which has obvious advantages in saving water resources and effectively solving wastewater discharge, etc., but these parallel systems need to be equipped with larger areas The water treatment system wastes the production area. At the same time, the water treatment efficiency of these constructed wetlands is not too high under the high pollution load, and sometimes it will lose related functions during the severe rainy season.

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