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Apparatus for disinfection of sea water/ship's ballast water and a method thereof

A ballast water and equipment technology, applied in the direction of heating water/sewage treatment, flotation water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of no description of ballast water treatment system, no mention of sterilization And other issues

Inactive Publication Date: 2014-03-12
COUNCIL OF SCI & IND RES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of these papers mentioned the use of hydraulic cavitation to sterilize ballast water
[0019] Although the above-mentioned hitherto known background art inventions and treatises achieve their specific objectives and requirements, none describe a system that allows ships to be transported from one port area to another without the use of chemicals, ultraviolet light or ultrasound. Ballast water treatment system and method for ballast water sterilization in port areas

Method used

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  • Apparatus for disinfection of sea water/ship's ballast water and a method thereof
  • Apparatus for disinfection of sea water/ship's ballast water and a method thereof
  • Apparatus for disinfection of sea water/ship's ballast water and a method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0116] The liquid passes through a 21.5 mm size cavitation element 1 which has a non-circular hole with a sharp edged orifice plate (after the plate is drilled, the edge of the hole is not chamfered or smoothed or ground ); the proportion of open area = 0.9, the flow rate = 2.8 l / s, the corresponding liquid velocity through the cavitation element is 7.7m / s and the pressure = 3kg / cm 2 . The biota passes through the hole once with the seawater. The percent bioremoval for influent water is shown in the table below.

[0117]

example 2

[0119] The liquid passes through a 21.5 mm size cavitation element 2 which has a non-circular hole with a sharp edged orifice plate (after the plate is drilled, the edge of the hole is not chamfered or smoothed or ground ); the proportion of open area = 0.5, the flow rate = 1.9 l / s, the corresponding liquid velocity through the cavitation element is 10.5m / s and the pressure = 3.8kg / cm 2 . The biota passes through the hole once with the seawater. The percent bioremoval for influent water is shown in the table below.

[0120]

example 3

[0122] The liquid passes through a 21.5 mm size cavitation element 3 which has a non-circular hole with a sharp-edged orifice plate (the hole edge is not chamfered or smoothed or ground after the plate is drilled ); the proportion of open area = 0.25, the flow rate = 1.0 l / s, the corresponding liquid velocity through the cavitation element is 11m / s and the pressure = 3.8kg / cm 2 . The biota passes through the hole once with the seawater. The percent bioremoval for influent water is shown in the table below.

[0123]

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PUM

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Abstract

The invention disclosed provides an apparatus and method for disinfection of ship's ballast water, such as sea water, based on hydrodynamic cavitation. The apparatus comprises a cavitating chamber of cross section such as circular or non circular shape housing a single or multiple cavitating element(s) in the form of plates of metallic, ceramic, plastic materials of varying thicknesses placed perpendicular to the direction of flow of liquid and positioned at uniform or non-uniform spacing. The cavitating elements are provided with single or multiple orifices of different cross sections, circular or non-circular, with or without sharp edges and with a fraction of cross-sectional open area of the passage. The disinfected water may be re-circulated through the system for additional disinfection or released from the tank into the surrounding waterways. The disinfection of seawater / ship's ballast water is achieved by hydrodynamic cavitation and the method does not involve use of any chemicals or any chemical reaction. The invented apparatus and method is simple, eco-friendly and can be fitted on to existing intake and discharge systems of any ship with minor modifications. It poses no risk to the health of the ship's crew unlike chemical methods and requires no special skill or additional manpower for its operation. The apparatus and method is capable of effectively sterilizing hazardous organisms contained in ballast water stored in a ballast tank.

Description

technical field [0001] The invention relates to a sterilizing device and method for seawater / ship ballast water. In particular, the present invention relates to an apparatus and method for the sterilization of ships' ballast water, such as seawater, based on hydrodynamic cavitation. The apparatus and method for seawater treatment of the present invention have particular utility on board ships for treating ballast water of ships transported from one region to another. The apparatus and method of the present invention may have other uses, such as making polluted water potable. Background technique [0002] When a ship leaves port empty or partially laden, seawater is placed in ballast tanks to maintain stability and adjust buoyancy. In fact, this ballast water will contain living organisms anyway. When the ship reaches its destination and prepares to load its cargo, it discharges ballast water, potentially introducing invasive species into the aquatic environment at the des...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/24C02F1/50
CPCC02F1/02B63J4/004C02F2209/03C02F2103/008C02F1/34B63B17/00
Inventor 阿尼尔·阿尔加·钱德拉谢卡尔苏巴什·希夫拉姆·沙瓦特伊兰戈万·丹达尤达帕尼马达翰·拉贾钱德瑞皮拉雷塞提·文卡特·克里希纳穆尔蒂阿尼诺德哈·巴欧山德拉·潘蒂特威沃克·威纳约克·阮纳德
Owner COUNCIL OF SCI & IND RES