Low-carbon ecological system for echelon culture of fish, apostichopus japonicus and shellfish

Abstract

The invention relates to a low-carbon ecological system for echelon culture of fish, apostichopus japonicus and shellfish and belongs to the field of aquaculture. The system is provided with a turbot factory culture unit and is characterized in that the turbot factory culture unit is used for extracting underground deep well seawater at a temperature of 10-20 DEG C, waste water produced by the turbot factory culture unit is discharged into an apostichopus japonicus pond culture unit, feed residues and feces of turbot in waste water are adopted as bait of the apostichopus japonicus, and part of the feed residues and the feces can be decomposed into inorganic nutritive salt to become a nutrient source for breeding of unicellular algae; water in the apostichopus japonicus pond culture unit carries a large number of unicellular algae and is then introduced into a shellfish culture unit, and water is purified through filter feeding by Meretrix lusoria, short necked clams or unsculptured clams; water in the shellfish culture unit is then discharged into a water storage canal around a farm to be used as a supplemental water source of the apostichopus japonicus pond culture unit or directly discharged into sea.

Description

technical field [0001] The invention relates to the field of aquaculture, and specifically relates to a low-carbon ecological system for stepped cultivation of fish, ginseng and shellfish. Background technique [0002] As we all know, turbot breeding all depends on seawater from deep underground wells, and the consumption of groundwater resources is quite large. In order to save groundwater resources, many scientific research institutes have developed industrial recirculating aquaculture systems for flounder and flounder to realize the recycling of aquaculture water, and put them into production and use in some farms. However, the system requires large investment and high operating costs. Most of the existing turbot farms still adopt the mode of constant flow water, and the breeding wastewater is directly discharged, which not only causes waste, but also increases the ecological pressure on the surrounding environment. Sea cucumbers grow slowly and have a long breeding c...

AI Technical Summary

Problems solved by technology

However, the system requires large investment and high operating costs

Most of the existing turbot farms still adopt the model of constant flow water, and the breeding wastewater is directly discharged, which not only causes waste, but also increases the ecological pressure on the surrounding environment

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