Municipal and industrial water and wastewater plants require heavy-duty fan equipment for aeration, filter backwash, odor control, air stripper columns, control room HVAC, sludge processing and drying of byproducts before sale. Sludge processing heaters and dryers require all types of air pollution control fans. Cyclone separators and traditional baghouse filters are used at material-handling points in the sludge processing plant. Chlorine systems for both water and wastewater plants use both physical enclosures and chemical absorption devices that require fans for containment of fumes.DECENT MACHINERY fans supplied in alloy and FRP construction are the standards in these applications.