Hundreds of firefighters have been battling a trash fire inside Montgomery County’s incinerator plant since Thursday, and the smoldering blaze in a giant storage pit will continue to emit smoke and disrupt some nonresidential waste deliveries for days, fire officials said Sunday.

County Fire and Rescue Service units met an 85-foot tower of trash ablaze at about 6:30 p.m. Thursday inside the Montgomery County Resource Recovery Facility, about two miles southwest of Dickerson, fire department spokesman Pete Piringer said in a recorded statement Sunday.

The two-alarm blaze was contained quickly, but members of all county fire battalions have rotated through the large plant — which burns about 1,600 tons of waste a day — to control the situation with the site’s manager, the county Department of Environmental Protection.

“We expect this will be a protracted incident,” Piringer said, “Area residents can expect to see smoke generated for the next couple of days, as we work to clear this area of the burning debris and get it into the incinerator where it belongs.”

The department discouraged commercial haulers and individuals from delivering trash to the Shady Grove Processing Facility and Transfer Station until Wednesday. Residential curbside collection should continue as normal, the department said on its website.