When faced with a licensing exam, don't struggle with test anxiety! Use the question below and others from our Exam Study Guide series to properly study and prepare for exam questions. Take a look at this sample wastewater treatment licensing question along with an explanation of the correct answer.Sample question:What type of sludge is typically processed in a conventional aerobic digestion?A) Primary clarifier sludgeB) Sludge taken from belt filter press operationsC) Lagoon sludgeD) Waste activated sludge (WAS)Answer:Typically aerobic digesters are used to treat waste activated sludge (WAS) from treatment systems that do not contain a primary settling process. The answer is therefore, D.Source: WEF MOP11 20-174About the
