Method and establishment for reducing dirt, discharging pollution, and increasing oxygen for water body at bottom of aquiculture water area

Abstract

This invention discloses method and facility for waste reduction, waste discharge and oxygen aeration for bottom wastewater of aquaculture water area. The method comprises: selecting at least one low-lying site at the bottom of aquaculture water area or aquaculture pond, or artificially digging at least one wide trench, burying at least one independent waste discharge pipeline or one waste discharge general pipeline at the bottom of the dam, extending the water inlet of the waste discharge pipeline to the low-lying site or trench for sucking waste, contacting the water inlet with high-concentration wastewater, and setting valve at the water outlet of the waste discharge general pipeline extending out of the dam. The method and facility can smoothly discharge high-concentration wastewater at the bottom of aquaculture water area, thus can reduce the contents of metal wastewater and organic wastewater, raise oxygen content, improve water quality, and promote the growth of aquatic products and raise their productivity.

Description

(1) Technical field [0001] The invention relates to an operation method and facility for reducing, discharging, and increasing oxygen for the water body of an aquaculture farm, in particular to a method for reducing, discharging, and increasing oxygen for the bottom water body of an aquaculture (farm) water area, and a facility for reducing, discharging, and increasing oxygen. (two), background technology [0002] At present, there are a variety of aquatic organism breeding places in various places. For example, there are water storage (culture) ponds, or other mountain ponds, rivers, rivers, and reservoirs with extremely slow flow rates, which can be used as various aquatic organisms. place. In order to allow aquatic organisms to grow healthily and ensure normal breeding, aquaculture farms around the world use mechanical aerators with fan blade spray structure to increase water surface oxygenation or use water exchange methods to purify water quality. With the vigorous deve...

AI Technical Summary

Problems solved by technology

In order to allow aquatic organisms to grow healthily and ensure normal breeding, aquaculture farms around the world use mechanical aerators with fan blade spray structure to increase water surface oxygenation or use water exchange methods to purify water quality. With the vigorous development of aquaculture, In order to increase production, increase the density of water body culture, and improve the economic benefits of the aquaculture industry, all professional farmers put in as much bait as possible. The above-mentioned method makes the feces excreted by a large number of fish and the leftover bait (the bait residue is mostly Deposited in low-lying places or in artificially dug trenches), over time, the organic matter at the bottom of the water continues to increase, especially in summer, a large number of bacterial reproduction and plankton consume most of the oxygen in the water body, and emit a large amount of carbon dioxide. Hypoxia, in order to prevent fish and other cultured organisms from dying due to hypoxia, we can only reduce the stocking density, feed less bait, frequently replenish fresh water (change water) to wash away part of the organic sewage, and let the aerator run at full capacity Oxygenation and other measures, the above passive measures often require a lot of manpower and material resources, sometimes the effect is not ideal, and the water quality and hypoxia problems still cannot be effectively solved

[0003] In addition, since the surface of the earth's mountains and rivers contains many oxides of iron and other metal elements, the metal oxides will dissolve into the rainwater after being eroded by rainwater to form "metal sewage". These metal sewage and organic sewage discharged by human and animal activities accumulate After mixing, it becomes sewage. When these sewage flows into reservoirs, ponds, and reservoirs, only a small amount is deposited in the soil at the bottom of the water, but as time goes by, most of the above sewage can be dissolved and mixed in the water for a long time. In the water body, their concentration content is distributed according to the level, that is, the deeper the water layer (such as the bottom) the higher the concentration of metal sewage such as iron in the water body, and the content of metal sewage such as iron in the water body near the water surface The less (the lower the concentration), even if the water body of the farm is continuously replenished, the replenished water will continuously bring metal sewage, so that the pollution content in the water body, especially the middle and bottom water bodies, will continue to increase and accumulate. Because the middle and bottom water bodies It is difficult to get oxygen in the air as easily as the upper surface water body, and the microorganisms and metal sewage in the middle and bottom sewage are constantly consuming the limited source of oxygen in the water body, making the middle and bottom water almost become anoxic stagnant water Water quality, resulting in the inability of some aquatic organisms raised by humans to grow or survive in the bottom water body, seriously affecting the utilization rate of the entire water body

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