Eliminating at-berth diesel emissions has long been a challenge for port-side communities, ship owners and the air pollution control industry.

Traditional pollution control technologies have operational barriers due to the unique environment of the port and the composition of diesel particulate (dry soot, SOF, sulfate, nitrate, ash, etc.) These obstacles were compounded by high levels of smog-forming oxides of nitrogen (NOx).

The situation was further complicated by the need to collect the diesel exhaust from auxiliary engine smokestacks and convey it to a treatment system without interrupting loading/unloading and other operations.

Tri-Mer Corporation has surmounted these engineering challenges using adaptations of its UltraCat Ceramic Catalyst Filtration system, the world's premier dry technology for PM+ SO2+ NOx reduction.

Tri-Mer technology effectively treats diesel emissions from small power plants, mixed fuel steam boilers, power generating installations and ships at anchor.

CARB regulations enshrined by US EPA and published in the Federal Register on October 20, 2023 strictly limit NOx and diesel particulate emissions from auxiliary engines on ocean-going vessels, including container ships, cruise ships, reefers, and refrigerated cargo vessels while docked at California ports and marine terminals. The regulation extends to most roll on/roll-off vessels and tanker vessels docking at regulated terminals beginning January 1, 2025 at Los Angeles and Long Beach.

Tri-Mer's CARB-certified technology assures compliance with this regulation based on its proven catalytic filtration technology. The Tri-Mer emissions treatment unit is also the most environmentally-practical solution: treatment byproducts are dry, non-RCRA and non-hazardous; there are no liquid wastes.