A professional who tends water plant equipment that scrubs and purifies gases from smelting furnaces. Respnsibilities include:

• Starts pumps and fans in scrubber towers and turns valves to regulate flow of water through nozzles.
• Pulls lever to open car bottom to unload lime from hopper cars into storage tanks.
• Knocks on bottom of hopper with pry bar or uses portable vibrator to loosen lime remaining in car.
• Dumps specified number of sacks of sulfate, hydroxide, and fluoride into mixer machines.
• Starts conveyors to transport mixed chemicals and lime to reactor tanks that make reagent solution.
• Observes control panel, records readings, and calculates solution temperatures, scrubber fan loads, and flow of treatment solutions, using charts and graphs.
• Changes basket screens in reactor tanks, using chain hoist, and cleans screens with water or steam.
• Collects samples of treatment solutions and sludge for laboratory analysis.
• Measures acidity or alkalinity of clarifier overflow to determine efficiency of impurity recovery, using pH meter.