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Electro-catalysis /ultraviolet composite ship ballast water treatment method and equipment

A technology for ship ballast water and treatment methods, which is applied in the field of treatment equipment for ship ballast water, and can solve the problems of low efficiency and high cost of treatment methods

Inactive Publication Date: 2015-12-09
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a treatment method for ship ballast water to solve the problems of low efficiency and high cost of existing ship ballast water treatment methods

Method used

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  • Electro-catalysis /ultraviolet composite ship ballast water treatment method and equipment
  • Electro-catalysis /ultraviolet composite ship ballast water treatment method and equipment
  • Electro-catalysis /ultraviolet composite ship ballast water treatment method and equipment

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Experimental program
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specific Embodiment approach 1

[0020] Specific embodiment 1: The ballast water treatment equipment includes: coarse grid 1, water pump 2, high efficiency filter 3, No. 1 control valve 4, and electrocatalytic reactor 5. After the ship’s ballast water pipeline passes through the coarse grid 1, it is connected to the inlet of the water pump 2, the outlet of the water pump 2 is connected to the inlet of the high efficiency filter 3, and the liquid outlet of the high efficiency filter 3 is connected to one end of the No. 1 control valve 4 and the No. 1 control valve 4 The other end is connected to the entrance of the electrocatalytic reactor 5, and multiple pairs of electrocatalytic electrodes are staggered in the electrocatalytic reactor 5.

[0021] The method for treating ship’s ballast water in this embodiment is implemented in sequence through the following steps: a. Filter the ship’s ballast water to remove microorganisms larger than 50μm; first use coarse grids to remove larger debris, and then use high effici...

specific Embodiment approach 2

[0023] Specific embodiment 2: The ballast water treatment equipment includes: coarse grid 1, water pump 2, high efficiency filter 3, No. 1 control valve 4, electrocatalytic reactor 5, and light radiation reactor 6. The ship’s ballast water pipeline is connected to the inlet of the water pump 2 after passing through the coarse grid 1, the outlet of the water pump 2 is connected to the inlet of the high efficiency filter 3, and the liquid outlet of the high efficiency filter 3 is connected to one end of the No. 1 control valve 4 and the No. 1 control valve 4 The other end is connected to the entrance of the electrocatalytic reactor 5. In the electrocatalytic reactor 5, multiple pairs of electrocatalytic electrodes are staggered. The outlet of the electrocatalytic reactor 5 and the entrance of the light radiation reactor 6 are connected by a flange, and the light radiation reacts The vessel 6 includes a quartz tube 6-2, the quartz tube 6-2 penetrates the reactor 6 in the height dir...

specific Embodiment approach 3

[0026] Specific embodiment 3: The ballast water treatment equipment and implementation steps used in this embodiment are the same as those in the second embodiment. The difference is that natural seawater is selected as the simulated marine ballast water as the experimental sample, and the cultured Dunaliella salina is added. The concentration of algae cells is 1×10 4 Pieces / mL, current density is set to 100mA / cm 2 . After the system is running stably, samples are taken at the outlet and samples are taken after 2 hours in a dark place. The CFDA-AM fluorescent staining method was used to quantitatively detect Dunaliella salina, and the algae inactivation rate is shown in Table 3.

[0027]

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Abstract

The invention relates to a ship ballast water treatment method and equipment adopting a combined treatment mode, solving the problems that an existing ship ballast water treatment method and equipment are lower in efficiency and higher in power consumption. The method is implemented by the following steps in sequence: a, filtering ship ballast water to remove impurities larger than 50 microns; b, producing strong oxidizing property free radicals through an electro-catalysis process; c, treating the ship ballast water through an optical radiation reactor. By utilizing the electro-catalysis / photocatalysis synergistic effect, microorganisms are killed under the combined action of ultraviolet radiation and the strong oxidizing property free radicals, thus meeting the requirement of purifying water quality. The ship ballast water treatment equipment comprises a coarse screen, a water pump, a high-efficiency filter, a No. 1 control valve, an electro-catalysis reactor and the optical radiation reactor.

Description

Technical field [0001] The present invention relates to a method for treating ship's ballast water, and the present invention also relates to equipment for treating ship's ballast water. Background technique [0002] The problem of off-site discharge of ship's ballast water has been listed by the International Maritime Organization (IMO) and the international environmental supervision department as one of the four major hazards to the global marine ecological environment. According to the statistics of the International Maritime Organization, more than 10 billion tons of ballast water is discharged into the ocean every year, and at least 7,000 organisms are voyaged to other places with the ballast water of ships every day. Species invade each other, exacerbating the deterioration of the marine ecological chain and the environment. Ship transportation accounts for 80% of the global cargo volume, and there are more and more ocean-going ships. Therefore, ship ballast water has been...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08
Inventor 尤宏迟明磊张思源贾玉红柳锋
Owner HARBIN INST OF TECH AT WEIHAI