The operator of a biodigester in western Michigan has met a deadline to curb odors in the area.

Local media reports Lowell Energy AD on Tuesday was in compliance, avoiding the prospect of a shutdown after months of complaints by area residents. Lowell city and utility leaders earlier decided to let the company proceed with odor-elimination plans.

The city says the company added a new filter system and duct work to stop odors, which were described as a cross between raw sewage and animal carcasses.

Lowell Energy last year opened the biodigester, which converts a mix of beer waste, salad dressing and manure into methane gas that powers a turbine and generates electricity. The biodigester has a 20-year deal to sell electricity to the city's utility.