Words to Describe scrubbers

How scrubbers often is described ("________ scrubbers")

• regenerative
• acid
• high
• glass
• packed
• material
• leaden
• wooden
• fritted
• automatic
• most
• type
• called
• bed
• downstream
• abrasive
• stack
• mandatory
• pressure
• cyclonic
• algal
• vertical
• hypochlorite
• exhaust
• smoke
• alkaline
• conventional
• variable
• commercial
• chemical
• centralized
• costly
• liquid
• based
• mechanical
• biological
• plate
• centrifugal
• preformed
• plant
• induced
• drop
• dry
• expensive
• mist
• paniculate
• stage
• horizontal
• retrofitted
• inert
• fume
• available
• effective
• fluidized
• caustic
• orifice
• wet
• efficient
• venturi
• rotary
• elaborate
• nitric
• gas
• industrial
• electric