Wärtsilä Water & Waste has taken a step toward tighter control of shipboard wastewater with a new modular grease trap that targets fats, oils and grease at source. The GREASE TRAP – GM Series uses a gravity-based separation process aligned with BS EN 1825, the European standard for grease separators, to keep grease out of downstream pipework and treatment systems. “Effective management of fats, oils and grease is an essential part of onboard wastewater handling,” the company notes. The design separates solids on entry, lets grease rise and collect in a dedicated chamber, and releases clarified water to the vessel’s discharge system.
Four standard sizes are on offer so operators can match capacity to galley throughput, with options that range from manual removal to configurations that simplify grease handling and disposal. “By separating grease at source, Wärtsilä’s new product line helps reduce blockages and maintain reliable wastewater system operation,” the company states. The modular approach is intended to cut crew time and maintenance while lowering the risk of operational disruption caused by accumulated grease in pipework.
Installation flexibility is built in, allowing the GREASE TRAP – GM Series to be retrofitted or specified for newbuilds across merchant vessels, cruise ships and offshore platforms. The product line is slated for availability in May 2026 and slots into Wärtsilä Water & Waste’s broader onboard wastewater portfolio, reinforcing a trend toward source-control systems that keep grease out of discharge streams before it can foul treatment trains.