Group: Alfa Laval
Catalog excerpts
Application When ships take on ballast, they take on more than water. Microscopic organisms, eggs, cysts and even the planktonic larvae of larger organisms are small enough to pass through the intakes and pumps. If these organisms survive transport to other parts of the globe, their impact can be devastating. In seas that are weakened by overfishing and pollution, non-native species can reproduce quickly and deprive local species of food and living space. Such invasions can jeopardize local economies and even human health, and their effects are usually irreversible. IMO has identified the introduction of species via ballast water as one of the four greatest threats to the world’s oceans. In 2004, the organization adopted the International Convention for the Control and Management of Ships’ Ballast Water and Sediments, which will phase in requirements for ballast water treatment over the coming years. PureBallast from Alfa Laval PureBallast is an easy-to-use ballast water treatment system that meets the new IMO requirements. Unlike many proposed systems, which rely on chemicals or are too large to implement in real life, PureBallast involves no environmental or operational compromises. Using a unique, chemical-free technology, PureBallast produces radicals that neutralize organisms in ballast water. The process is effective, automated and self-contained, as well as harmless to the ballast tanks and crew. PureBallast is the first ballast water treatment system without chemicals to have received full Ballast Water Type Approval, having consistently demonstrated the necessary biological efficiency in land-based and onboard trials. Since PureBallast is also remarkably compact, it can be installed even in cramped engine room conditions or in areas that are otherwise difficult to utilize. By combining spacesaving design, chemical-free technology and full automation, PureBallast is the clear choice for both installation and operation. PureBallast Ballast water treatment system Alfa Laval’s compact PureBallast system effectively neutralizes organisms in ballast water.
Open the catalog to page 1Features an fits • IMO compliance PureBallast is an IMO-compliant system, having completed all of the necessary approval stages and received full Ballast Water Type Approval. These stages comprise land-based and onboard tests, as well as the two stages of Active Substance Approval. • Green operation PureBallast meets the requirements of IMO legislation without the addition or generation of chemicals, and without the creation of residuals. PureBallast was the first system to complete both stages of the Active Substance Approval process, thus proving that PureBallast poses no risk to the...
Open the catalog to page 2System components • Filter A 50 ìm filter is used during ballasting operations. (During deballasting, the filter is bypassed.) This not only blocks the intake of larger organisms, but also reduces the amount of sediment in the ballast water tanks. The filter is cleaned via automatic backflushing, which requires a system pressure of 2 bar between the outlet and the backflush discharge line. Only a small part of the system flow is used for backflushing, whereas the majority of the water continues through the ballast water system. • Wallenius AOT unit(s) Depending on the system flow rate, one...
Open the catalog to page 3• Ballasting In preparation for ballasting, the lamps of the Wallenius AOT units undergo a four-minute initialization process, during which they are cooled by a flow of seawater. During actual ballasting, fresh water is used to cool the systems’ electronic components. When ballasting begins, the incoming ballast water first passes through the filter, which removes organisms and particles larger than 50 ìm. The water then continuous through the Wallenius AOT units, which treat the water to IMO-established limits before it enters the ballast water tanks. Once ballasting is complete, the AOT...
Open the catalog to page 4System layout PureBallast is remarkable in its compactness and simplicity. The system’s modular equipment fits easily into the engine room, thanks to a blockcomponent structure that allows it to be installed between normal ballast water system components. This not only facilitates installation, but also simplifies day-to-day operations. Because there are no moving parts and few consumables, the system can be maintained with minimum effort. PureBallast treatment The PureBallast treatment process is a patented form of advanced oxidation technology (AOT). Related technologies can be found in...
Open the catalog to page 5Operations • Maintenance intervals: - Filter inspection once per year - Lamp replacement every 1500 hours - Catalyst replacement every 3000 hours - CIP fluid replacement when the pH value reaches 3, or monthly • The System Manual provides detailed information in electronic or printed format: - Installation instructions - Operating instructions - Alarms and fault finding - Service and spare parts • Service spares kits contain all necessary spare parts for each service and tips for maintenance checkpoints: - Lamp kit - Catalyst kit - Filter kit • Commissioning and technical services are...
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