Class D Wastewater Test Questions With 100% Correct Answers

Class D Wastewater Test Questions
With 100% Correct Answers

Operator treatment goals are defined by the limits and conditions in waste discharge -
CORRECT ANSWER-Permits



According to TCEQ design criteria for domestic wastewater system (30 Texas
administrative code chapter 217) wastewater collection lines should not be installed any
closer than (9) feet from an (blank) line - CORRECT ANSWER-Water



Process control of an activated sludge wastewater treatment plant includes - CORRECT
ANSWER-B and C only / Proper sludge wasting and Using information from samples,
test, and records to adjust the treatment process.



Aerobically digested sludge will - CORRECT ANSWER-Be a brownish color



A process used to stabilize the bio solids (sludge) removed during wastewater treatment
is known as - CORRECT ANSWER-Digestion



Chlorine in the presence of moisture (water) is highly - CORRECT ANSWER-Corrosive



In Texas, the most commonly used disinfectant in wastewater treatment processes is
chlorine. One other method of disinfection utilizes - CORRECT ANSWER-Ultraviolet
light



Methods of sludge dewatering include - CORRECT ANSWER-All of the above



Lime conditioning of sludge can be used to - CORRECT ANSWER-Control PH