Ship-borne seabed sediment restoration device and method

Abstract

A shipborne submarine sediment restoring device is provided.A restoring device body is connected with a towing vessel through a towing rope.The shipborne submarine sediment restoring device comprises a bottom plate, and an exhaust assembly and a drainage assembly mounted on the bottom plate; the exhaust assembly comprises an aerating pipe and a plurality of microporous aerating heads, the aerating pipe is provided with a gas inlet, and the microporous aerating heads and the aerating pipe form a communicated line; the drainage assembly comprises a water pipe, the water pipe is provided with a water inlet, a plurality of outflow pipes in communication with the water pipe are transversely arranged along the length of the water pipe, and a plow tooth is connected below each outflow pipe; a through jet line is formed in the back of a plow, and an inlet of the jet line is in communication with the outflow pipes; a delivery pipe comprises a water delivery pipe and a gas delivery pipe, an inlet of the water delivery pipe and an inlet of the gas delivery pipe are located on the side of the towing vessel, and an outlet of the water delivery pipe and an outlet of the gas delivery pipe are in communication with the water inlet and the gas inlet, respectively.The plow teeth stir up submarine soil when the towing vessel moves forward, forming turbid water, and gas and water are introduced to seabed respectively through the aerating pipe and the water pipe to react with the seabed turbid water, thus restoring the seabed.

Description

technical field [0001] The invention belongs to the technical field of seabed pollution sediment restoration, and relates to a ship-mounted seabed sediment restoration device and method. Background technique [0002] Most of the Earth's seafloor is covered by sediments, and seafloor sediments form the largest biological habitat among the coverings on Earth. However, seabed sediments are often the final destination of land-based pollutants. Common pollutants include heavy metals, organic pollutants, and nutrients. These substances often pose potential threats after accumulating in sediments. For example, heavy metals and toxic organic substances are very harmful. It is difficult to disappear through the natural process, and it will continue to accumulate and enter the human body through the food chain, threatening human health. At the same time, if a large amount of organic matter, nitrogen, phosphorus and other nutrients are enriched in the seabed sediments, it is easy to c...

AI Technical Summary

Problems solved by technology

However, seabed sediments are often the final destination of land-based pollutants. Common pollutants include heavy metals, organic pollutants, and nutrients. These substances often pose potential threats after accumulating in sediments. For example, heavy metals and toxic organic substances are very harmful. Difficult to disappear through the natural process, it will continue to accumulate and enter the human body through the food chain, threatening human health

At the same time, if the seabed sediments are enriched with a large amount of organic matter, nitrogen, phosphorus and other nutrients, it will easily cause eutrophication of the water body, which will lead to the formation of a large area of ​​low-oxygen areas on the seabed, and eventually degrade the seabed ecosystem.

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