Ballast system for reducing sediment sucked by ballast water, and ship

Abstract

The invention discloses a ballast system for reducing silt sucked by ship ballast water and a control method thereof. The ballast system comprises a seawater header pipe, a broadside water inlet pipe,a ballast tank connecting pipe connected to a ballast tank, and a ballast water conveying pipe connected with the seawater header pipe, the broadside water inlet pipe and a water outlet of the ballast tank connecting pipe. Wherein a water outlet of the ballast water conveying pipe is connected with an outboard drain pipe and a water inlet of the ballast tank connecting pipe, a seawater filter, aballast pump, a water conveying valve and a purification filter valve are sequentially arranged on the ballast water conveying pipe in the water flow direction, and the purification filter valve is connected with the ballast water treatment device in parallel. The water taking position of the ballast water can be flexibly selected according to the operation state of the ship ballast water, the sediment content of the surrounding water body and the water level, and the sediment content of the sucked ballast water is efficiently reduced.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a ballast system and a ship for reducing the inhalation of sediment by ballast water of a ship. Background technique [0002] Due to the international nature of shipping, marine pollution has become an international hazard. In order to protect the marine environment, prevent marine pollution and the invasion of alien organisms, countries around the world have successively formulated a series of norms and regulations to regulate the operation and discharge of ballast water. [0003] For conventional ballast water systems, the water intake position is fixed. When the water quality of the external water body is poor or the water level is shallow, sediment is easily sucked into the ballast system. This will cause the efficiency of the ballast water treatment device to decrease, or even fail to work, thereby prolonging the operation time of ballast water and affecting the operat...

AI Technical Summary

Problems solved by technology

[0003] Conventional ballast water system, the water intake position is fixed, when the water quality of the external water body is poor or the water level is shallow, sediment is easily sucked into the ballast system

This will cause the efficiency of the ballast water treatment device to decrease, or even fail to work, which will prolong the operation time of ballast water and affect the operation of the ship

Once foreign sediment is deposited in the ballast tank, it is difficult to discharge it again by conventional ballast water operation. The sediment in the ballast tank is a breeding ground for bacteria and microorganisms, which will cause secondary damage to the treated ballast water. Pollution, which in turn will pollute the environment of oceans and rivers

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