KALAMAZOO, MI -- Plans to construct a odor-scrubbing biofilter have been scrapped, after the city of Kalamazoo received bids that were millions more than it budgeted for the work, Public Services ...
DODGE CENTER, Minn. — Wood chips stretched out parallel the entire length of the barn, the only visible part of the biofilter. Biofilters use microorganisms that exist in nature to convert odors to ...
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