Grease and related odors from a trickling filter wet well were so bad at the Silicon Valley Clean Water treatment plant that the staff couldn’t eat lunch at the picnic tables on the deck outside the office.
But 3 1/2 years ago, the plant — located in Redwood City, California — installed a MILLI hydroxyl radical misting system (Vapex) to dissolve and eliminate the grease layer. The odors have disappeared, and so has corrosion of plant infrastructure in that area from hydrogen sulfide.
“I was familiar with the technology,” says Monte Hamamoto, chief operations officer. “It had always been appealing to
