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Electrodialysis unit for water treatment

A technology of electrodialysis and electrode stack, which is applied in the field of water treatment and can solve serious problems in the environment, industry and human health

Inactive Publication Date: 2013-12-11
海洋保护公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There may be no natural predators of these species at the point of discharge, and they can colonize and reproduce in new locations, causing serious problems for the environment, industry and human health

Method used

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  • Electrodialysis unit for water treatment
  • Electrodialysis unit for water treatment
  • Electrodialysis unit for water treatment

Examples

Experimental program
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Embodiment Construction

[0110] figure 1 The arrangement uses the electrodialysis device in the ballast water treatment system, but it is recognized that there are other applications where the electrodialysis device is preferred, and the electrodialysis device can be adjusted to suit different requirements. In particular, it should be understood that the electrodialysis device described herein can be used for ballast water treatment, or for other water treatment applications, without the need to combine figure 1 Other processing types shown in the exemplary arrangement.

[0111] therefore, figure 1 The diagram includes an electrodialysis device 8 ballast water treatment system. In this embodiment, the water is filtered and then processed through the cavitation device 10, the gas injection device 14, and the electrodialysis device 8. This series of treatments caused destruction and death of organisms in the water. As well as affecting the organisms in the water, the nitrogen added to the water in the inj...

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PUM

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Abstract

An electrodialysis unit 8 comprises a plurality of cathodes 68, a plurality of anodes 70 and a plurality of membranes 71; the cathodes 68 and anodes 70 being arranged alternately in an electrode stack, with membranes 71 in between each cathode 68 and anode 70, anode flow paths 74 formed between the membranes 71 and anodes 70 and cathode flow paths 72 formed between the membranes 71 and cathodes 68; the electrodialysis unit 8 further comprising: an inlet manifold 56 for distributing water to the anode flow paths 74 or to the cathode flow paths 72, wherein the inlet manifold 56 comprises a first tube 58 provided with holes along its length, the holes being connected to the flow paths, and a second tube 60 located within and enclosed by the first tube 58, the second tube 60 having an inlet at one end and being closed at its second end and the second tube 60 being provided with holes 62 along its length that open into the first tube 58.

Description

Technical field [0001] The present invention relates to water treatment by electrodialysis, such as treatment to kill microorganisms, preferably seawater treatment, such as ballast water treatment. Background technique [0002] Ballast water is water transported by ships in ballast tanks or sometimes in other suitable spaces, such as cargo holds or oil tanks. Pump it into the tank at the location of the water "donor" to compensate for the change in the center of gravity caused by the unloading / consumption of cargo and / or fuel, and thus maintain stability. Correct ballasting is necessary from a structural point of view, and is also used for performance reasons to ensure proper thruster and rudder immersion, proper bridge considerations, and maintain desired ship movement and operating characteristics. Ballast water is transported to a water "holding" location, which is usually at the location where the ship loads cargo, which is potentially outside the biogeographic area of ​​the...

Claims

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Application Information

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IPC IPC(8): C02F1/469B01D61/42B01D61/44B01D61/52
CPCB01D61/44B01D61/50B01D61/52B01D63/085B01D2313/105C02F2103/008C02F2201/4611C02F2201/46155C02F2209/02C02F1/4693Y10T29/49002B01D63/08B01D63/082B01D61/422B01D61/46C02F1/469C02F2201/002B01D63/081B01D63/084
Inventor A·B·安德森
Owner 海洋保护公司
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