A method and device for emergency treatment of port ballast water with ultraviolet photocatalytic strong oxidation

Abstract

The present invention proposes an ultraviolet photocatalytic strong oxidation port ballast water emergency treatment device. The device includes a reaction box in which an inclined quartz plate and a common fixing plate are sequentially arranged, and the inclined plate is sprayed with catalytic materials. By changing the inclination angle of the inclined plate and the thickness of the water film, according to the actual ballast water volume and water quality, the synergistic effect of ultraviolet irradiation and photocatalysis can be used to ensure that the water film meets the discharge requirements of ballast water during the process of falling on the inclined plate. The ultraviolet lamp is arranged on the back of the quartz plate, which can irradiate the water flow on the quartz plate and the opaque plate at the same time, and efficiently utilizes the ultraviolet lamp. And the UV lamp does not directly contact the ballast water, it will not change the physical properties of the water, and there will be no dirt attached to the UV lamp to ensure the penetration rate of the UV. The device of the invention can maximize the use of ultraviolet lamps, has low energy consumption, and realizes the purpose of environmental protection and saving; the processing speed is fast, and the emergency processing requirements are met; modularization can be realized, and the use of ships with various ballast capacities can be satisfied.

Description

Technical field: [0001] The invention proposes a water treatment technology capable of controlling the invasion of marine organisms, specifically a fast and efficient treatment device for ship ballast water used in port emergency, which belongs to the field of environmental protection. Background technique: [0002] In order to ensure the safety of the ship when it is empty or partially loaded (such as stability, power load status, roll angle, bow and stern draft and trim, shear force, bending moment, reserve buoyancy, etc.) International Maritime Organization (IMO) conventions Requirements), the ship needs to add ballast water. With the increase of ship size, ship speed and ship voyage density, the exchange volume and frequency of ballast water are accelerated. According to statistics, about 10 billion tons of ballast water are carried by ships to all parts of the world every year, and more than 7,000 species are transferred to new areas by ship ballast water every day. T...

AI Technical Summary

Problems solved by technology

However, in all the above-mentioned ballast water treatment devices using the ultraviolet method, the arrangement of the ultraviolet lamps is submerged or flow-through, and the resulting dirt on the surface of the lampshade affects the light transmittance of ultraviolet radiation. Most of the devices pass through Add a cleaning unit to flush the ultraviolet lamp to solve the problem, which leads to the complexity of the device and high energy consumption

Moreover, the immersion type and the overflow type have the problem of changing the physical properties of the water due to the contact between the ultraviolet lamp and the ballast water to increase the water temperature.

Ballast water will also affect the penetration rate of ultraviolet rays, resulting in the loss of ultraviolet rays

[0004] Existing ballast water treatment devices are only suitable for ships, and the treatment of ballast water during the course of travel makes it meet the discharge requirements. Therefore, the existing ballast water treatment devices generally take a long time to implement and cannot meet the requirements of ports. Requirements for emergency and rapid treatment of a large amount of polluted ballast water in a short period of time

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