Wastewater Treatment Operator Certification |bundle |

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 CORRECT ANSWER A. Prevent excessive solid buildu...

WasteWater Sources & Characteristics: What is the most common reason for a wastewater to contain intermittent large amounts of sand, gravel, and grit? CORRECT ANSWER storm events WasteWater Sources & Characteristics: Combined wastewater is defined as CORRECT ANSWER sanitary wastewater and s...

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

General Wastewater Treatment: What is the pressure head caused by? CORRECT ANSWER Water elevation General Wastewater Treatment: What color should the piping be that contains reclaimed water? CORRECT ANSWER purple General Wastewater Treatment: What is the term for the height to which a...

Biochemical Oxygen Demand CORRECT ANSWER organic strength measured by amount of oxygen consumed over time composite sample CORRECT ANSWER sample combined from multiple grab samples grab sample CORRECT ANSWER 1 sample representative of current conditions Dissolved Oxygen CORRECT ANSWER measu...

the name of the state agency responsible for enforcing pollution control laws in Texas is- CORRECT ANSWER Texas commission on environmental quality The term pathogenic means: CORRECT ANSWER capable of causing disease the minimum separation between sewer lines and potable water lines is CORRECT...

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% CORRECT ANSWER 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 b...

What is the most common reason for a wastewater to contain intermittent large amounts of sand, gravel, and grit? CORRECT ANSWER Storm events Combined wastewater is defined as CORRECT ANSWER Sanitary wastewater and stormwater runoff In general, the solids content in wastewater is about CORRECT ...

Clean Water Act CORRECT ANSWER 1977 primary legislation concerning water pollution and its regulation. It establishes the NPDES permit system that prohibits point sources from discharging pollutants into waters of the United States. EPA CORRECT ANSWER Environmental Protection Agency is an agency ...

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

Sources of Wastewater CORRECT ANSWER 1) Domestic, industrial, commercial Wastewate Domestic Waste CORRECT ANSWER Human Fecal, Laundry and Bath Residue, Household Cleaners, Excess Food Waste Commercial Waste CORRECT ANSWER Domestic waste on a much larger scale -Restaurants -Apartmenst -Stadi...