Ballast water treatment plant for ocean-going vessel

Abstract

The invention discloses a ballast water treatment plant for an ocean-going vessel, which comprises ballast tanks, a ballast pump, Venturi ejectors and an inert gas generator, wherein the ballast pump is communicated with the ballast tanks, the Venturi ejectors are respectively communicated with the ballast tanks and seawater through pipelines, the inert gas generator is respectively communicated with the Venturi ejectors and the ballast tanks through pipelines, and ventilating valves are arranged on the ballast tanks. A ballast water treatment method in the plant is a physical method, and accordingly, additional chemical agents, relevant agent feeding devices and other filter devices are not needed, periodic cleaning is omitted, water flow is unaffected, drain time is shortened, the tanks are protected from oxidation corrosion, reliability of ballast water treatment effect is ensured, and the ballast water treatment plant is fine in practicality and capable of generating fine economic and social benefits.

Description

technical field [0001] The invention relates to a ballast water treatment device for ships, in particular to a ballast water treatment device for ocean-going ships. Background technique [0002] At present, ship transportation is an important link in the global logistics chain, and more than 80% of goods in international trade are transshipped by ships. Ocean-going ships inject and discharge ballast water, causing harmful aquatic organisms and pathogens to spread across the ocean. The uncontrolled discharge of ballast water has caused serious harm to marine ecology and public health. The resulting marine ecological damage accidents are numerous. The Global Environmental Fund (GEF) listed it as one of the four major hazards to the ocean. [0003] In order to effectively control and prevent the invasion of alien species caused by the discharge of ship ballast water, the damage to the environment, human health, property and resources caused by the spread of pathogens. The Int...

AI Technical Summary

Problems solved by technology

Three times the amount of exchanged water, the load of the ballast pump is large, and the exchange time is long, but since the ballast tank is always in a full state, the impact of these two exchange methods on the stability and strength of the ship is negligible, due to the dilution method Two sets of pumps are required to pump ballast water in at the top and pump out at the bottom separately, and the flow rate of pumping in and pumping out needs to be kept equal to keep the water level in the tank constant and the pressure in the tank constant. The piping system is relatively complex

Existing ships generally do not adopt this exchange method

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