Towards cleaner oceans Bilge water generated onboard ships is a major environmental concern for the shipping industry. Regardless of its source, bilge water must be treated to reduce the oil content to levels that meet international regulations for release into the environment. This is critical to keeping the world’s oceans and their vast marine ecosystems healthy and productive. The impact of ship propulsion on the marine environment can be minimized and heavy fines avoided if efficient bilge water treatment is carried out onboard. The need for waste disposal ashore can also be reduced. Over the years, the cost for waste disposal has continued to climb as local authorities enforce stricter laws for the land-based companies that process this waste. Application Cleaning bilge water poses distinct challenges. Not only does the composition and flow of bilge water change, making continuous and efficient treatment difficult, but treatment onboard presents another set of constraints. Treatment methods must meet individual ship requirements and demands for safety, reliability, compactness, automation, low maintenance and the ability to withstand rough weather conditions. Centrifugal separation has proven to be a reliable, efficient and flexible method for continuous removal of oil and other contaminants suspended in the bilge water onboard ships and at land-based power plants. EcoStream oily water cleaning system. EcoStream Oily water cleaning system

EcoStream: Reliable, efficient, continuous The Alfa Laval EcoStream solution is a reliable single-stage centrifugal separation system for highly efficient treatment of large bilge water volumes at sea as well as ashore. The compact modular system generally cleans bilge water to less than five parts per million (ppm) oil in water. Based on a standardized concept, EcoStream is a complete stand-alone system that is easy to install for any new or existing installation. Continuous, fully automatic operation – even when subjected to oil shock and rough weather conditions – reduces the need for large...

Bilge water Bilge water can be a mixture of water, fuel oil, lube oil, hydraulic oil, detergents, oil additives, chemicals, catalytic fines, soot and other substances. This mixture is normally collected in a bilge water settling tank and maintained at an elevated temperature. The marine sector uses large amounts of chemicals for cleaning, service and maintenance activities in the engine room and many of these products are surfactant-based. As such, these chemicals contribute to emulsion formation in a ship’s bilge water system. An emulsion is a mixture of oil and water, where small oil droplets...

Technical data Power and connections Supply voltage Three-phase, 220 V up to 690 V Frequency 50 or 60 Hz Power consumption 12 kW Instrument air DN 12 700–2000 kPa Operating water DN 12 300–600 kPa Steam inlet DN 25 700 kPa saturated Net weight Separator with frame 580 kg Valve and piping rack 455 kg Feed pump 150 kg Control cabinet 325 kg EMD00013EN 0511 Alfa Laval reserves the right to change specifications without prior notification. Options • Automatic, self-cleaning filter. • Chemical dosing unit. • Sludge removal kit (SRK) with intermediate sludge tank, sludge pump and level switches. •...