Methane To Power Half of Milwaukee’s Wastewater and Biosolids Facilities

A $90 million methane piping project will reduce Milwaukee’s greenhouse gas emissions by 454,000 Mg/yr (500,000 ton/yr) and the city’s 454,000-m3/d (120-mgd) wastewater treatment facility’s emissions by 95%, according to a study by Brown & Caldwell (Walnut Creek, Calif.).

Milwaukee’s latest green initiative is projected to save the city and its ratepayers (about 1.1 million in a 28-community service area) $148 million over a 20-year period and will utilize waste methane — currently flared — from the active Emerald Park Landfill 27 km (17 mi) away in Muskego, Wis.