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Water electrolytic treatment system of ballast for cruising

A technology for ship ballast water and electrolytic treatment, which is applied in the field of electrochemical oxidation to achieve the effect of increasing dissolved oxygen, reducing the content of COD and TOC, and has strong practicability

Inactive Publication Date: 2006-02-22
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

At present, there are at least 25 treatment methods for ship ballast water, but no single treatment technology can meet the five standards proposed by IMO, namely, safe, practical, economical, effective and environmentally acceptable.

Method used

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  • Water electrolytic treatment system of ballast for cruising

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Embodiment Construction

[0011] The applicable flow rate of electrolytic processor 1 is 50m 3 / h, the operating voltage of the electrolytic processor 1 is 8V, the distance between the cathode and the anode of the electrolytic processor 1 is 4.5mm, the material used for the negative electrode of the electrolytic processor 1 is stainless steel 1Cr18Ni9Ti, and the coating of the DSA anode of the electrolytic processor 1 The layer is ruthenium dioxide, and the ballast pump 4 is a centrifugal pump.

[0012] During the pumping process of the ship’s ballast water, it is processed according to the following steps: the outboard seawater enters the electrolysis processor 1 through the valve control valve 6 and the control valve 7 from the ballast pump 4 through the outlet valve 8 and the processor inlet valve 10 for direct electrolysis treatment, and then Enter the corresponding ballast compartment through the ballast valve box 5. At this moment, the control valve 9 and the control valve 12 are closed; when th...

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Abstract

The invention belongs to the art of electrochemical oxidization. Disclosed is an electrolytic treatment system for shipboard ballast water, by electrolyzing the shipboard ballast water directly in the electrolytic treater, highly-effective oxidant which contains one or more among Cl2, HClO molecule, ClO2, free oxygen and hydroxyl radical, being generated, and by the force of electric field, the creature in shipboard ballast water being killed or deactivated. The online detective element measures the concentration of the generated oxidant and sends an electrical signal to an electrical power controller, which can adjust by said signal the electrolytic voltage or adjust treatment flow capacity by changing the opening of the valve when the ballast pump is a centrifugal pump, to keep the concentration of the oxidant in a right range. The invention can effectively remove microcosmic salt out of seawater, reduce the content of COD and TOD in seawater, and increase the dissolved oxygen in seawater. It improves the quality of seawater.

Description

technical field [0001] The invention belongs to the technical field of electrochemical oxidation and relates to an electrolytic treatment system for ship ballast water, which is the application of electrochemical oxidation technology, electrolysis technology and electric field inactivation technology in the field of ship ballast water treatment. Background technique [0002] The damage of marine species to the marine environment caused by the ship's ballast water has been recognized by the Global Environment Facility (GEF) as one of the four major threats to the ocean. For this reason, IMO passed the "International Convention on the Management and Control of Ships' Ballast Water and Sediments" in February 2004. At present, there are at least 25 treatment methods for ship ballast water, but no single treatment technology can meet the five standards proposed by IMO, namely, safety, practicality, economy, effectiveness and environmental tolerance. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63J4/00C02F1/461
Inventor 党坤孙培廷赵殿礼肖井坤殷佩海
Owner DALIAN MARITIME UNIVERSITY
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