Water treatment operator BUNDLED exams 2023 with 100% correct answers

Investigate immediately. If a consumer complains about the drinking water characteristics, the operator should record the complaint and Operating ratio What term is used when a water utility divides its total operating expenses into the total revenue? Daily How often should operatin...

What are the two important factors impacting the effectiveness of chlorination? Concentration of chlorine and contact time The treatment process that controls corrosion or scaling is known as what? Stabilization Permanganate reactions are highly dependent on what factor? pH I...

What is the typical BOD removal efficiency in a primary clarifier? A) 10 to 15% B) 40 to 60% C) 20 to 50% D) 95 to 99% C) 20 to 50% (v.1 pg 129) What does the "F" in F/M ratio represent? A) The microorganism population in the aeration tank B) The amount of filamentous bacteria in...

What is the methane content in a properly operation anaerobic digester? A) 30 to 35% by volume B) 1 to 2% by volume C) 65 to 70% by volume D) 15 to 20% by volume C) 65 to 70% by volume (v.2 pg 158) What will the addition of chlorine gas do to the pH of wastewater? A) Moderately incr...

1 mg/l is the same as 1 part per billion (ppb) True or False False (v.1 pg 468) A SCADA system is capable of monitoring and controlling equipment from a remote location True or False True (v.2 pg 627) A Discharge Monitoring Report is typically submitted to the regulatory agency...

What are the main steps during the Hydrologic cycle? 1. Evaporation 2. Condensation 3. Transportation 4. Transpiration 5. Precipitation 6. Runoff Evaporation Defined as: Water is transferred from earths surface to atmosphere. -80% occurs from oceans -Evaporation occurs more at warm t...

What is MCL? Maximum Contaminent Level (MCL) A public water system is any system that serves a population greater that or equal to ? 15 services connections or 25 people regulary What is the Maximum total chlorine residual allowed by the Disinfectant-Disinfection By-Prouducts Rule 4...

Spontaneous combustion can occur if activated carbon is mixed with... Potassium permanganate If chemical solutions gets on a person's skin, the area should be flushed _______________, and if the chemical dust are inhaled ______________________. with large quantities of water, consult a phy...

Ammonia mixed with chlorine gas creates a white smoke The most difficult part of a water distribution operator's job. furnish a continuous supply Physical connection between a safe and potentially unsafe water source. cross connection A distribution system is a looped syste...

In the activated sludge process, some of the activated sludge must be wasted to... A. Prevent excessive solid buildup B. Prevent clogging of the sludge return line C. Prevent overloading of sludge return pumps D. Increase digester gas production A. Prevent excessive solid buildup The b...

If a customer complains about the drinking water characteristics, the operator should record the complaint and... Investigate immediately What term is used when a water utility divides its total operating expenses into a total revenue? Operating ratio How often should data, such as f...

Surface water runoff, storm water, sanitary and industrial. A collection system that is called "combined" may carry this kind of wastewater: 2 The flow in a collection system should be a minimum of ____ feet per second (FPS)? Solids will settle. What will happen if the flow is too...

Presedimentation Reduce silt in water Settling zone Calm area in settling basin where suspended materials settle Coagulation Occurs in Seconds Flocculation Occurs in Minutes (optimum velocity 0.5 fps) Floc should be popcorn sized Sedimentation Occurs in Hours (4 hou...

b) Kilopascals What units are used to measure water pressure? a) Kilowatts b) Kilopascals c) Horsepower d) Head units a) Exhaust fan Which of the following is NOT an example of PPE (Personal Protective Equipment)? a) Exhaust fan b) SCBA c) Face shield d) Traffic vest d) B...