Method and device for killing algae and bacteria in pipeline transportation of marine ballast water

Abstract

The invention provides a method and a device for killing algae and bacteria in the pipeline transportation of marine ballast water. A millipore filter and a tubular high-voltage discharge reaction unit are connected on a transportation pipeline of the marine ballast water in series, the marine ballast water passes through the millipore filter, the diameter of filtration pores is 20 to 50 microns, and larger suspended matters and aquatic organisms entering a pipeline system of the marine ballast water are removed; and the filtered water enters the tubular high-voltage discharge reaction unit, pulse high voltage of 10 to 60 kilovolts is applied between a high-voltage electrode and a ground electrode of the tubular high-voltage discharge reaction unit, high-voltage pulse discharge is generated, the detention time of the ballast water in the tubular high-voltage discharge reaction unit is 0.1 to 2 hours, and the ballast water passing through the tubular high-voltage discharge reaction unit enters a ballast tank. The invention can kill or inactivate foreign pathogens and pests in the ballast water in a pipeline transportation system and lowers or eliminates the marine pollution caused after the ballast water is discharged.

Description

technical field [0001] The invention relates to a water treatment method in the technical fields of biological application and marine environment engineering. Specifically, a method of killing algae and bacteria in a ship's ballast water. The invention also relates to a treatment device for ship ballast water. Background technique [0002] Ballast water is necessary to ensure the safety of the ship's navigation. In order to ensure the balance and stability of the ship when it is empty, the ship needs to be equipped with ballast water to lower the ship's center of gravity. According to relevant data, with the increase of international economic and trade exchanges, the tonnage of ships is getting larger and the speed is getting higher and higher, which means that the natural barriers to the spread of biological populations between oceans are greatly weakened. About 12 billion tons of ballast water are carried by ships around the world every year, and there are as many as 7,0...

AI Technical Summary

Problems solved by technology

The publication number is CN01074138A, and the patent titled "A New Method for Treating Ship's Ballast Water" discloses a new method for treating ship's ballast water, which belongs to the technical field of liquid phase discharge plasma and biological application [2] , in this method, the contact area between the discharge electrode and the ballast water to be treated is small, and the amount of treated water is limited

Images