Entries Tagged Exam Study Guide

WASTEWATER By Rick LallishWhat piece of laboratory equipment is used to determine settleable solids?A. CrucibleB. SettleometerC. Imhoff coneD. FilterAnswer: C. The settleable solids test is used to...

WASTEWATER By Rick LallishAccording to U.S. EPA Part 503 regulations, which type of biosolids may be used as soil amendment and/or fertilizer for...

WASTEWATERBy Rick LallishWhen referring to odors and odor control in wastewater treatment, what is the definition of odor threshold?A. When the odor has...

WASTEWATER By Rick LallishAeration reactors using buoyant free-floating biofilm carriers in an activated sludge process are known as what sort of treatment?A. Rotating...

WASTEWATER By Rick LallishWhen using membrane bioreactors, what is typically required for upstream screening?A. Stringent pretreatment standards for all industrial usersB. Primary clarification followed by...

WASTEWATER By Rick Lallish What type of diffuser gives the best oxygen transfer but less efficient mixing? A. Coarse-bubbleB. Fine-bubbleC. Volcano pressurizedD. Mechanical ANSWER:  B. Diffusers...

WASTEWATER By Rick Lallish When using sand beds to dry biosolids, what is the probable cause of excessive odor when the material is applied,...

WASTEWATER By Rick Lallish What is the main cause of rising sludge in an activated sludge secondary clarifier? A. Toxic shock loadB. DenitrificationC. NitrificationD. High...

WASTEWATER By Rick Lallish Which method to turn pumps on or off uses air pressure? A. Mercury switch (mercroid style) B. Bubble systems C. Electrode systems D. Float...

Licensing exams can be challenging. Our Exam Study Guide helps you prepare by presenting questions similar to those on an actual exam. You can...

WASTEWATER By Rick Lallish Which type of blower may not be operated against a closed valve? A. Centrifugal B. Positive displacement C. High-speed driven (turbo) D. Open-impeller single-stage Answer: B. Blowers and...

WASTEWATER By Rick Lallish When operating a belt filter press, alignment is critical for proper operation and safety. What system normally accomplishes this operation? A....

Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time, we...

WASTEWATER By Rick Lallish Which classification of anaerobic digester is the most efficient at pathogen reduction, increased volatile solids reduction and decreased detention times? A. Heterophilic B....