Honolulu has launched a new recycling effort to keep more material out of the city’s landfill.

The initiative will combine the recycling of green waste, food waste and sewage sludge using a process called “in-vessel conversion.”

City officials said Thursday that the plan will be carried out by Hawaiian Earth Recycling LLC. It will construct, operate and maintain a facility on private property in Wahiawa.

Construction is expected to begin early next year, and take two years to complete.

Hawaiian Earth Recycling will process up to 80,000 tons of green waste, 10,000 tons of food waste and 20,000 tons of sewage sludge per year.