To accommodate increased demand, the plant sought Tri-Mer's assistance to double its scrubber capacity. Tri-Mer began by increasing residence time in two existing scrubber columns; one was replaced with a column suited for new Multi-Chem technology. Updated software and an additional odor control stage were also added. The 12,000 cfm system today handles 110 lbs/hr. of NOx.
By upgrading present systems rather than replacing the scrubber, TABC saved in excess of $1.5 million.