Ballast Water Treatment
Advertise Here
Trending Topics:
Sunday, June 14, 2015

Ship Equipment
Ship Maintenance
Ship Systems
Worldwide Metric
Freeman Marine
Neptune Group

Home Page
About MarineTalk
Buyer's Guide
World InfoDesk
Discussion Forums
Advisory Board
Advertising Information
Submit Company Listing
Edit Company Listing
Site Map
MarineTalk Site Search:
Featured Companies

EnergyImages.COM, L.L.C.
Upstream and Downstream photographs sold on line at a fraction of the production cost.
    USA Texas

International Underwriting Association - IUA
The IUA is a worldwide body representing the interests of the marine insurance industry globally.
    United Kingdom

Advanced Vibration Solutions, LLC
Specializing in "detuning" systems . . . preventing and eliminating damaging torsional and objectionable linear vibrations in rotating equipment.
    USA Florida

The Tait Marine Art Gallery
The marine artwork of Shetland oil painter Jim Tait, whose seascapes are characterised by their dramatic and realistic seas and skies.

Ballast Water Treatment


Ballast Water Treatment

Many potentially deadly stowaways are traveling around the world aboard thousands of vessels. Microorganisms such as cholera and ecoli are getting a free ride in the ballast water of ships. This heightens the potential for spreading harmful diseases from port to port. Two US researchers have developed a solution to the problem, which involves 'zapping' the bugs with ultra violet light. The method uses a lamp that emits UV rays to kill the disease-causing bacteria and other microorganisms found in the water.

Tests carried out with a prototype have shown that it is effective in killing many bacteria. The prototype of the device is Plexiglas chamber 30 centimetres high, filled with half a litre of water. The Plexiglas blocks the UV rays, preventing them from escaping. A tube shaped UV lamp is placed in a protective sleeve, which is inserted into the chamber. The lamp is turned on anywhere from a few seconds up to a few minutes. The treatment length depends on the target microorganisms. Low doses of the light prevent the cells from replicating, at higher doses they are killed. The method could be applied in a number of other areas, say researchers, such as processing drinking water or sewage treatment. The next phase of development will involve the device being built to cater for larger amounts of water, more conducive to the amounts of ballast found in a ships' hull.

The creation of the lamp and chamber follows research carried out last year in the US Smithsonian Environmental Research Centre. The ballast water of commercial vessels arriving in Chesapeake Bay on the US East Coast was tested and found to contain billions of microbes, some disease-causing. Each litre of water taken from the hull had about a billion bacteria as well as seven billion virus-causing particles. Cholera-causing bacteria were detected in all 15 ships examined. In the US alone more than 79 million tonnes of ballast water is dumped into the sea each year.

Beyond 2000  

Latest Marine News and Technology Articles | Maritime 2015 Buyer's Guide


E-mail:  Contact Us

Copyright 1998 - 2015 MarineTalk
Division of Link Internet Business Solutions
All rights reserved.

The reproduction, retrieval, copying or transmission of this Web site content,
in whole or in part, is not permitted without the express permission of
MarineTalk .