Evac is offering its HydroTreat system a transformative solution for reducing direct emissions and significantly cutting indirect emissions resulting from onboard waste treatment.
Decarbonization is seen as not just a compliance requirement, but an opportunity for the maritime industry to lead in global sustainability efforts. With increasing pressure to reduce GHG emissions, decision-makers are said to be looking into technologies that not only meet but exceed regulatory standards to future-proof their investments. HydroTreat, with its circular onboard waste treatment technology, provides a pathway to achieve these goals.
HydroTreat is designed to tackle emissions head-on. By using the HTC process, HydroTreat ensures that waste is processed in a non-incineration manner, producing no exhaust gas and thus eliminating direct emissions to both the sea and atmosphere. This makes HydroTreat a critical asset for vessels aiming to minimise their environmental footprint. The only byproduct of the system is HTC-biochar, a valuable resource that can be used to improve soil productivity, promoting a circular economy.
Indirect emissions, often stemming from energy consumption, are also addressed by HydroTreat in an energy-efficient manner. The system significantly reduces fuel consumption by using advanced heat exchangers to retain heat and lower energy usage compared to alternative methods like thermal dryers and incineration.
HydroTreat’s approach to onboard waste treatment and extreme energy efficiency is said to lead to a total reduction of 80% in CO2 emissions, and 60% in fuel consumption compared to alternative systems using thermal dryers and incineration. This not only supports decarbonisation efforts but also offers cost savings in fuel expenditures. For a 5,000-person cruiseship, this translates to a potential annual fuel saving of 250t of diesel. HydroTreat can help vessels comply with the current MARPOL Annex IV and V regulations as well as aligning with IMO decarbonisation goals.
By effectively eliminating the need to store contaminated waste onboard the vessel, HydroTreat reduces the volume of wet organic waste by 90%. This also means saving on offloading fees of contaminated waste.
HydroTreat is a key component of Evac’s Total Concept, a comprehensive water and waste management solution designed to drive sustainability and operational efficiency in the maritime industry. By integrating eight essential systems—freshwater generation, vacuum collection, waste and wastewater treatment, ultrasonic antifouling, marine growth prevention, and corrosion protection—it helps vessels conserve resources, reduce waste, and minimize climate impact.
Image: HydroTreat concept (source: Evac)
