Zero-pollution discharge system for circulating aquaculture tail water in pond and construction method thereof

Abstract

The invention discloses a zero-pollution discharge system for circulating aquaculture tail water in a pond and a construction method thereof. A river crab escape prevention wall is built on the periphery of an aquaculture pond, the pond is divided into a purification area and an aquaculture area through a newly-built pond ridge, external water is firstly purified through the purification area, and a high-quality water source is provided for shrimp and crab aquaculture; secondly, circulating micro-flowing water is formed between the two areas, only new water is injected without changing water in the production process of the aquaculture pond, the water changing frequency in the production process of the aquaculture pond is reduced, and the effects of purifying water and saving water are achieved; and the aquaculture area is divided into different areas by an inner ridge of an S-shaped pond ridge, staging planting of aquatic plants and precise management of shrimp and crab aquaculture can be achieved, pond drying in different areas can be achieved in sequence when the pond is dried, aquaculture tail water rich in nutrient substances at the bottom layer is not discharged to the environment outside the pond, and zero-pollution discharge of the aquaculture tail water is achieved.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a zero-pollution discharge system for circulating aquaculture tail water in ponds and a construction method thereof, which is suitable for high-standard transformation of ponds, where aquaculture tail water needs to be discharged up to standards, and water resources are insufficient or eutrophic Breeding ponds in areas with a high degree of urbanization. Background technique [0002] Pond aquaculture is the main way of fishery production in our country. Its aquaculture mode is constantly updated with the progress of technology, equipment and social development. demand for aquatic products. Especially in order to implement the construction of ecological civilization, reduce water discharge, and protect water ecology, we need to innovate in some basic and key aspects such as pond structure, change breeding habits, adjust breeding models, and adapt to the breeding requirements ...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the freshwater shrimp and crab breeding ponds in our country follow the traditional structure, which has the following defects: (1) directly using external source water, the water quality is not guaranteed; (2) planting aquatic plants in the whole pond at one time before the crab species are stocked, and cannot be divided into time periods (3) After the crab species are stocked, they are spread all over the pond, and they need to be fed in the whole pond, which is inconvenient to manage; (4) In the middle stage of breeding, a lot of artificial salvage or replanting of aquatic plants is required; (5) The anti-escape facilities of river crabs are The exposed plastic boards and aluminum boards on the ridge of the pond are not only poorly equipped and not durable, but also affect the overall appearance; (6) when the pond is dried at the end of the breeding period, the bottom mud water rich in nutrients is directly discharged from the pond, which wastes water. resources, and has a certain impact on the external water body, and also caused a waste of nutrients in the bottom water body

Images