Breathing plate for separating and collecting fish feces and residual baits in culture pond

Abstract

The invention relates to the technical field of aquaculture, in particular to a breathing plate for separating and collecting fish feces and residual baits in a culture pond. The breathing plate comprises a plate body. The plate body is uniformly provided with a plurality of breathing holes. The breathing holes comprise upper end faces and lower end faces. The widths of the vertical cross sectionsof the breathing holes change from the upper end faces to the lower end faces. The opening ratio is less than 25%. The breathing plate has the advantages that a feces and residual bait separation technique based on the pore plate energy dissipation theory, the orifice flow theory and the pore plate rectification theory is utilized, water flows are naturally provided by the culture pond, and accordingly, the residual baits can be efficiently separated from the feces; core water quality indicators of culture water, such as suspended solids, total phosphorus and COD, are remarkably reduced, andfreshness and stability of the culture water are maintained; the breathing plate can be used for breeding aquatic products such as eels, shrimps and juvenile crabs, frequent replacement of the plate body is not needed, and the applicability is extremely high.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a breathing board used for isolating and collecting residual bait of fish feces in a culture pond. Background technique [0002] Since the development policy of "focusing on breeding" formulated in 1985, the development of my country's aquaculture industry has made great achievements. In 2018, the total output of aquaculture in my country has exceeded 49.91 million tons, accounting for more than 77% of the total output of aquatic products in my country and more than 60% of the global aquaculture output. major fishing countries. In recent years, the per capita share of aquatic products in my country has been maintained at about twice the world average level, making a significant contribution to increasing fishermen's income and food security. [0003] Among them, pond culture is the main form of aquaculture in my country and the main source of aquatic product supply. Accordi...

AI Technical Summary

Problems solved by technology

However, the problem with this scheme is that the sewage discharge process is too long, and the distance from fish excrement and bait to the sewage outlet and the preliminary sedimentation facility will be very long. Take it out of the sewage outlet, but the residual bait of fish feces is very fragile, so it will be decomposed with a high probability before reaching the sedimentation facility, and this method also limits the species of farming, such as shrimp, eel, eel, etc. cannot get used to These varieties impacted by high-speed running water cannot be cultivated

However, the water flow above the net plate fluctuates greatly, and the net plate cannot block its interference with the waste below, so that the waste cannot stay at the bottom safely, decomposes quickly, and cannot effectively collect fish feces and residual bait. cultured species of aquatic products

But one thing needs to be clear is that in the prior art, it is generally believed that separation and barrier are difficult to have at the same time

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