A professional who controls system of tanks to wash and reduce acidity of activated carbon sludge, preparatory to drying, for variety of industrial and consumer applications. Respnsibilities include:

• Turns valves to regulate flow of acid, carbon sludge, and water through thickener and agitator tanks according to tank-level and specific gravity readings supplied by wash helper.
• Draws sample of product in beaker and tests for acidity, using pH meter and standard titration test.
• Compares level of solution in graduated suction tube with conversion chart to determine acidity of sludge.
• Turns valve to admit caustic solution to neutralizer tank until acidity level meets prescribed standard.
• Patrols work area to observe level of carbon in thickener tank and wash solutions in overflow troughs to prevent spills, regulating pump speeds as necessary.
• Gauges tank levels, using calibrated rod.
• Keeps records of tank levels and test results for shift log.