Tidal rage type manual downwelling device

Abstract

The invention discloses a tidal rage type manual downwelling device, and belongs to the technical field of marine anoxia. The tidal rage type manual downwelling device comprises an upper water storagetank, electromagnetic valves, downwelling vertical pipes, mixers and a lower drainage tank; the upper water storage tank is communicated with the lower drainage tank through at least one downwellingvertical pipe; one electromagnetic valve is arranged on each downwelling vertical pipe; the mixers are arranged on the inner side wall of the lower drainage tank; and the side wall of the lower drainage tank is provided with drain outlets. According to the tidal rage type manual downwelling device, the problem of seabed anoxia can be solved by utilizing the tidal range to generate downwelling; during the flood tide, the electromagnetic valves are closed, and the upper water storage tank stores water; after the tide ebbs and is static for a period of time, water in the upper water storage tankreaches the salinity close to that of bottom seawater after the evaporation temperature of the water in the upper water storage tank is increased, and then the electromagnetic valves are opened to form downwelling; and oxygen-enriched water in the upper water storage tank and anoxic water in the lower drainage tank are fully mixed under the action of the mixers and are discharged through the drainoutlets in the wall of the lower drainage tank, and the discharged oxygen-enriched water is mixed with the surrounding anoxic water so as to alleviate the anoxia problem under the sea.

Description

technical field [0001] The invention relates to the technical field of solving ocean hypoxia, in particular to a tidal range artificial downflow device. Background technique [0002] In recent years, affected by the eutrophication of water bodies, the phenomenon of blue-green algae and red tides in coastal waters has become more and more frequent. These algae are decomposed by bacteria after death, which will consume a large amount of DO in the water body. Due to the smooth exchange of oxygen with the atmosphere, the concentration of DO in the surface seawater can still be maintained at a normal level. However, the bottom seawater will be in a long-term anoxic state due to the blocking effect of the halocline on DO exchange. DO in seawater is one of the basic living conditions for most organisms in the ocean. Long-term hypoxia will cause discomfort and eventually death of marine organisms such as fish and shrimp. [0003] Hypoxia in water seriously endangers the estuary a...

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Problems solved by technology

However, the land-based energy supply methods of these technologies are not suitable for working in sea areas

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