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Method and device of ballast water treatment

A technology of treatment device and treatment method, applied in water treatment device, water/sewage treatment, natural water treatment, etc., can solve problems such as danger

Inactive Publication Date: 2011-01-19
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, when the technologies disclosed in the above-mentioned publications are used to treat large-capacity ballast water, it is difficult to see from the descriptions in the above-mentioned publications the basis for killing microorganisms and bacteria in the ballast water.
In addition, in the technology disclosed in Japanese Patent Application Laid-Open No. 2008-110276, although microorganisms and bacteria contained in ballast water can be removed in the form of magnetic flocs, it is pointed out that microorganisms that threaten the ecosystem and health The risk of aggregation and retention of flocs formed by agglomeration of bacteria and bacteria

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  • Method and device of ballast water treatment
  • Method and device of ballast water treatment
  • Method and device of ballast water treatment

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Embodiment Construction

[0050] Hereinafter, embodiments of the ballast water treatment method and the ballast water treatment apparatus of the present invention will be described in detail with reference to the drawings.

[0051] First, refer to figure 1 , the overall configuration of the ballast water treatment device 10 in the embodiment will be described. The ballast water treatment device 10 has an aggregation unit 20 , a magnetic separation unit 30 , a filtration separation unit 40 , and a heat sterilization unit 50 .

[0052] The aggregation unit 20 has a high-speed stirring tank 22 and a slow-speed stirring tank 24 , and generates magnetic flocs F in the raw water (water to be treated) sent through the pump 12 . For this reason, a magnetic powder adding part 14 and a coagulant adding part 16 are provided on the piping path that sends raw water to the high-speed stirring tank 22, and a polymer powder is installed on the path that sends water from the high-speed stirring tank 22 to the slow-spe...

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Abstract

The invention provides a device of ballast water treatment, which is capable of killing microorganisms and bacteria in a magnetic floccule and preventing the influence brought to the environment and human body. The device of ballast water treatment comprises a flocculation part which stirs the magnetic powder and flocculating agent added in the ballast water to generate magnetic floccule, and a magnetic separation part which conducts recovery on the magnetic floccule generated by the stirring in the stirring groove. The device of ballast water treatment also comprises a pipeline used for the communication of the magnetic floccule and a heating part used for heating the pipeline. The heating part is set as a water tank for water storage, and the pipeline is dipped into the water tank.

Description

technical field [0001] The present invention relates to the purification treatment of ballast water in ships and the like, and particularly relates to a ballast water treatment method and device for purifying aggregated flocs separated from ballast water. Background technique [0002] In the ballast water management treaty adopted by the International Maritime Organization (IMO) in 2004, in order to prevent microorganisms from moving and spreading through ballast water, destroying the ecosystem and endangering health, ships are required to carry plankton for killing plankton in ballast water. etc. processing device. Currently, ballast water treatment technology is being developed that combines various water treatment technologies such as ozone treatment, ultraviolet irradiation, heat treatment, and magnetic separation. [0003] For example, Japanese Patent Laying-Open No. 2008-100157 discloses an ozone-based ballast water treatment technology. In the ballast water treatmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/48
CPCY02P70/10B01D21/0009B01D35/06B63J4/002C02F1/02C02F1/52C02F2103/008C02F2201/001C02F2209/02C02F2209/03
Inventor 山田学森田穰武村清和照井茂树沼田好晴汤本聪林田惠星
Owner HITACHI LTD