A scaling test method for ship ballast water treatment system

A technology of ship ballast water and treatment system, which is applied in the scale test field of ship ballast water treatment system, which can solve the problems of huge test seawater volume, many test and inspection items, and increase certification cost, so as to reduce the test preparation work The effect of reducing the amount of water, reducing the area of ​​the test site, and reducing the amount of seawater

Active Publication Date: 2017-11-17
SUNRUI MARINE ENVIRONMENT ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method includes a filter unit, an electrolysis unit, and a neutralization unit in the certification process. Although it can simulate the entire electrolytic treatment system flow and test its treatment effect, it needs to prepare a filter unit and a neutralization unit, which is costly and requires tests. The amount of seawater is huge, so it is necessary to build a test base on the seashore. In addition, there are many test and test items and a long time, and the high cost of test also greatly increases the cost of certification.

Method used

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  • A scaling test method for ship ballast water treatment system

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Effect test

Embodiment 1

[0055] Scale-scale certification test for Type A electrolysis ship ballast water treatment system. Measured in the test: salinity: 35PSU; electrolyzer flow rate: 17.1m3 / h, average TRO concentration at sampling point 1: 0.43mg / L, average TRO concentration at sampling point 2: 1223mg / L. Hydrogen content in the upper space of simulated ballast tank: 0%LEL.

[0056] Calculated according to formula (1): Chlorine production = (1223mg / L-0.43 mg / L) * 17.1 m3 / h / 1000 = 20.9kg / h.

[0057] Assuming that the minimum TRO concentration required by this type of ballast water treatment system to meet the requirements of D-2 is 4mg / L and the maximum treatment is 1200 m3 / h, the required minimum chlorine production is: 4mg / L * 1200 m3 / h=4.8kg / h.

[0058] Final verification result:

[0059] (1) The actual chlorine production measured by the verification test: 20.9kg / h > The theoretically required minimum chlorine production: 4.8kg / h; therefore, it can meet the IMO D-2 standard;

[0060] (2) H...

Embodiment 2

[0062] Scale-scale certification test for Type B electrolysis ship ballast water treatment system. Measured in the test: salinity: 26PSU; electrolyzer flow rate: 10.5m3 / h, average TRO concentration at sampling point 1: 0.35mg / L, average TRO concentration at sampling point 2: 1125mg / L. Hydrogen content in the upper space of simulated ballast tank: 0%LEL.

[0063] Calculated according to formula (1): Chlorine production = (1125mg / L-0.35 mg / L) * 10.5 m3 / h / 1000 = 11.8kg / h.

[0064] Assuming that the minimum TRO concentration required by this type of ballast water treatment system to meet the requirements of D-2 is 6mg / L and the maximum treatment is 800 m3 / h, the required minimum chlorine production is: 8mg / L * 800 m3 / h = 6.4kg / h.

[0065] Final verification result:

[0066] (1) The actual chlorine production measured by the verification test: 11.8kg / h > the theoretically required minimum chlorine production: 6.4kg / h; therefore, it can meet the IMO D-2 standard;

[0067] (2) M...

Embodiment 3

[0069] Scale certification test for Type C electrolysis ship ballast water treatment system. Measured in the test: salinity: 14.5PSU; electrolytic cell flow rate: 13.2m3 / h, average TRO concentration at sampling point 1: 0.33mg / L, average TRO concentration at sampling point 2: 989mg / L. Hydrogen content in the upper space of simulated ballast tank: 0%LEL.

[0070] Calculated according to formula (1): Chlorine production = (989mg / L – 0.33 mg / L) * 13.2 m3 / h / 1000 = 13.05kg / h.

[0071] Assuming that the minimum TRO concentration required by this type of ballast water treatment system to meet the requirements of D-2 is 9mg / L, and the maximum treatment is 1000 m3 / h, the required minimum chlorine production is: 9mg / L * 1000 m3 / h = 9kg / h.

[0072] Final verification result:

[0073] (1) The actual chlorine production measured by the verification test: 13.05kg / h > The theoretically required minimum chlorine production: 9kg / h; therefore, it can meet the IMO D-2 standard;

[0074] (2)...

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Abstract

The invention discloses a scaling test method for a ship ballast water treatment system. The method includes the step that the Csp value of test water before and after electrolysis and the average flow rate of the electrolyzed test water are tested, the step that the test water flows through a hydrogen separation device to be subjected to hydrogen separation after being electrolyzed, the step that the test water flows into a simulated ballast tank to be at a set volume after being separated through hydrogen, and the step that the chlorine yield and the hydrogen content are calculated. According to the method, a filter unit and a neutralizing unit are needless, and thus the needed sea water amount is only 1%-2% of that of a traditional land-based test verification method of the same model. In addition, only the chlorine yield and hydrogen need to be detected in the method, biological indicators do not need to be detected, and therefore the test period is short and verification results can be obtained quickly. Meanwhile, test and verification cost is greatly saved.

Description

technical field [0001] The invention relates to the field of ship ballast water treatment systems, in particular to a scaling test method for ship ballast water treatment systems. Background technique [0002] "Ballast water" refers to the water and its suspended matter added to the ship to control the trim, heel, draft, stability or stress of the ship. The purpose of adding ballast water to the ship is to meet the needs of ship maneuvering and navigation safety . When the ship is loaded with ballast water, local aquatic organisms will also be loaded into the ballast tank, and will be discharged to the destination sea area with the ballast water after the voyage is over. It is estimated that at least 7,000 species of marine organisms are transported globally in ships' ballast water every day. The aquatic organisms carried in the ship's ballast water mainly include bacteria and other microorganisms, eggs and larvae of small invertebrates and other species, and even some lar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/26
Inventor 于青刘光洲王海涛刘雪雷姚萍
Owner SUNRUI MARINE ENVIRONMENT ENG
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