Under the Convention, all ships in international traffic are required to manage their ballast water and sediments to a certain standard, according to a ship-specific Ballast Management System. All ships have to carry a ballast water record book and an international Ballast Water Management Plan certificate. The Marine UV BWMS standards are being phased in over a period of time. New ships must meet the UV BWMS System water treatment standard. Existing ships should exchange ballast water mid-ocean but they will need to meet the Marine BWMS ballast water treatment standard by the date of a specified renewal survey. Eventually, most ships will need to install an on-board IMO BWMS System.
Ship BWMS Working Principle: When IMO BWMS Plan ballasting, the Marine BWMS Plan filter can remove the sediments and micro-organisms greater than 50m. After that Vessel Ballast Water Treatment System ballast water enters the UV reactor and appropriate dose of UV ray is generated in order to inactivate the organisms, such as algae and bacteria in the seawaters. With the completion of above treatment, the qualified ballast water finally comes to ballast tanks. During the whole process,filter back flushing and auto self-cleaning of UV lamp will be activated according to the pressure and light intensity change. The Vessel Ballast Water Treatment Plan filter is automatically bypassed during de-ballasting, and the Vessel Ballast Water Management System ballast water receives a second UV-treatment during discharge as safeguard to ensure discharged sea water to comply with the convention's requirements.
Marine Ballast Water Treatment System can be applied to various types of vessels including container ships, bulk carriers, offshore vessels, chemical tankers and so on.
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