Alfa Laval PureBallast 3 Std & Ex Ballast water treatment systems for the widest flow range and Ex requirements Now in its third generation, Alfa Laval PureBallast is an automated inline treatment solution for the biological disinfection of ballast water. Operating without chemicals, it combines initial filtration with an enhanced form of UV treatment to remove organisms in accordance with stipulated limits. The main component of the modular system is an enhanced UV reactor in which disinfection treatment occurs. The special design of the reactor’s synthetic quartz lamp sleeves supports transmission of a broader wavelength spectrum, providing more UV light during disinfection. Combined with the reactor’s internal design, this ensures optimal UV dosage and low energy consumption. This leaflet covers PureBallast 3 Std, which handles the widest flow range and is also available in PureBallast 3 Ex configurations for potentially explosive onboard environments. Application Type approved by IMO and the U.S. Coast Guard (USCG), PureBallast 3 Std and Ex systems are designed for ballast water treatment in all types of water – fresh, brackish and marine. They can be configured for flows of 250–3000 m3/h, with multiple systems used for larger capacities. Due to their enhanced UV technology and power ramp-up capabilities, these systems provide unmatched biological disinfection performance in low-clarity waters. When operating in IMO-regulated waters, full-flow treatment is possible where the UV transmittance is as low as

Benefits • Superior performance in any waters PureBallast 3 Std and Ex systems offer unmatched biological disinfection performance in any type of water: fresh, brackish or marine. This includes water in liquid form at frigid temperatures. In addition, the systems excel in low-clarity water conditions. When operating in IMOregulated waters, they perform at full flow where the UV transmittance is as low as 42%. • Ease of use PureBallast 3 Std and Ex systems are fully enclosed, fully automated and thoroughly integrated with the ballast water system. They requires no manual intervention. • Effective...

Treatment components Biological disinfection comprises an initial filtration stage followed by enhanced UV treatment in a specially designed reactor. Both stages are integrated into the ballast water piping as inline components. • Filter A filter is used during ballasting operations to block the intake of larger organisms and reduce sediment in the ballast water tanks. Bypassed during deballasting, the filter is cleaned via automatic backflush-ing using a small portion of the system flow. This not only improves backflushing efficiency, but also increases overall filter effectiveness by producing...

Operating sequence • Ballasting The ballast water treatment process is fully automated. When initiated, the system undergoes a brief startup sequence. When ballasting begins, the incoming ballast water first passes through the filter stage. This removes any larger organisms and particles, which improves the quality of the water for treatment. The filter stage is of benefit for operation in cloudy coastal waters and fresh water. After filtration the water continues through the reactor stage, where it is disinfected by means of enhanced UV before entering the ballast water tanks. Once ballasting...

Technical data

Alfa Laval is a leading global provider of specialized products and engineering solutions. Our equipment, systems and services are dedicated to helping customers to optimize the performance of their processes. Time and time again. We help our customers to heat, cool, separate and transport products such as oil, water, chemicals, beverages, foodstuffs, starch and pharmaceuticals. Our worldwide organization works closely with customers in almost 100 countries to help them stay ahead. Alfa Laval reserves the right to change specifications without prior notification. How to contact Alfa Laval Up-to-date...