BlueVap - Turn black water into clean water Thermal separation system for treating black water to reduce disposal costs Disposal of black water from olive oil extraction is an important and growing concern for the olive oil industry as most municipal wastewater plants do not accept it. To resolve this issue, Alfa Laval has developed the BlueVap thermal separation solution to deal effectively with the difficult properties of the black water. The BlueVap “plug and play” system turns black water into clear water that can safely be discharged to the local sewage plant, and a concentrate that can be mixed with husk. The process eliminates the need for storage or spreading in farmlands, and significantly reduces the amount of wastewater as well as disposal costs. The unique thermal wastewater treatment concept has proven its worth and reliability in different types of industrial olive oil mills. Application The Alfa Laval BlueVap thermal separation system has been developed for continuous treatment of black water, typically from three-phase olive oil extraction. It is suitable for individual olive oil mills as well as for co-operatives and is available in capacities up to 1,000 litres/hour or 2,500 litres/hour. Design, features and benefits The design and operation of the pre-assembled, fully automatic BlueVap treatment system takes into consideration the fact that many olive oil producers do not have steam or cooling water available in their mills. This is typically required for other types of black water treatment. BlueVap features the most resilient evaporator technology available on the market, building upon Alfa Laval's world-leading experience in heat exchanger technology. The system offers high thermal efficiency with very low electricity consumption per kg of treated black water. Key benefits of the BlueVap system • Proven, reliable solution • Low treatment costs • Complete pre-assembled treatment unit with compact design • No steam or cooling water required • High resistance to fouling • Automatic, user-friendly operation - minimum supervision. Alfa Laval thermal separation system Black water (100%) before treatment with BlueVap Clear water (80%) after treatment Concentrate (20%) after treatment

Working principles After filtration of the black water, the BlueVap closed-loop thermal separation system, based on evaporation, splits the wastewater into two fractions: Clear water and concentrate. Approximately 80% of the treated, separated black water ends up as clear water that can be used to irrigate fields or safely be discharged to the municipal sewage system. The remaining 20% is a highly biodegradable concentrate that is typically added to the husk from the decanter in the olive oil mill or burned for cogeneration. Standard equipment The equipment inside the dotted area is supplied...