Emergency method and device for treating port ballast water through ultraviolet rays, photocatalysis and strong oxidation

Abstract

The invention provides an emergency device for treating port ballast water through ultraviolet rays, photocatalysis and strong oxidation. The device comprises a reaction box, slant quartz plates and common fixing plates are sequentially arranged in a box body, and a catalytic material is sprayed on the slant plates. By changing slant angles and the water film thickness of the slant plates, it canbe guaranteed that water films meet the discharging requirement of the ballast water in the process that the slant plates fall up and down through a synergistic effect between ultraviolet radiation and photocatalysis according to the actual volume and the water quality condition of the ballast water. Ultraviolet lamps are arranged on the back faces of the quartz plates, can simultaneously illuminate water flow on the quartz plates and non-transparent plates, and are efficiently used. The ultraviolet lamps are not in contact with the ballast water, the physical property of the water cannot be changed, dirt cannot be attached to the ultraviolet lamps, and the penetration rate of ultraviolet rays is guaranteed. According to the emergency device, the ultraviolet lamps can be maximally used, energy consumption is small, and aims of being environmentally friendly and capable of saving energy are achieved; the treating speed is high, and the emergency treating requirement is met; modularization can be achieved, and the emergency device meets the using requirements of various ballast capacities.

Description

[0001] Technical field: [0002] 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. [0003] Background technique: [0004] 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 wate...

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

[0006] 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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