Tank removal - Study guides, Class notes & Summaries

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 bacteria in the activated sludge process C) The MLVSS in the aeration tank D) The food for the microorganisms flowing into the aeration tank, in lbs/day CORRECT ANSWER D) The food for the microorgani...

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 (Ans - A. Prevent excessive solid buildup The best operating strategy for feeding primary sludge to an anaerobic digester is to feed... A. Several time a day B. Large quantities once or twice a day C. Once a day D. When the volatile solid...

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 answers 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 the activated sludge process C) The MLVSS in the aeration tank D) The food for the microorganisms flowing into the aeration tank, in lbs/day correct answers D) The food for the microorga...

Wastewater Treatment Operator Certification Test 2 final study guide 2024/2025 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 the activated sludge process C) The MLVSS in the aeration tank D) The food for the microorganisms flowing into the aera...

WASTEWATER PRACTICE EXAM 2024 WITH 100% CORRECT ANSWERS What's the methane content in a properly operating a anerboic digestor? - correct answer 65-70% by volume What will the addition of chlorine gas do to the pH of wastewatee - correct answer Decrease pH What's the purpose of a parshall flume? - correct answer Measure flowrate What's the typical removal efficiency of set table solids in a primary clarifier ? - correct answer 95-99% Which of the following is true about pumpi...

Wastewater Treatment Operator Certification Test #2 | 80 Questions and Correct Answers 2024/2025 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% - 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 bacteria in the activated sludge process C) The MLVSS in the aeration tank D) The food for the microorganisms...

2024 S12 sprinkler / S12 sprinkler test Questions with Correct Answers| 2024 Update 100% Solved PASS A+ system control valve - ANSWER-valve controlling flow to water-based fire protection systems. fire command center - ANSWER-... MFSPC - ANSWER-... MLP - ANSWER-... tags - ANSWER-on closed section valves serving affected areas: area affected, brief description, occupancy classification, c of f number, estimated time until operational Green tag - ANSWER-no impairment found in entire system- ...

Waste Water Operator Level 1 Exam Prep 2024/2025 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 best operating strategy for feeding primary sludge to an anaerobic digester is to feed... A. Several time a day B. Large quantities once or twice a d...

_______ and ________ soil textural classes are always unsuitable for standard absorptive OSSF - Answer-class IA and IV List each of the major soil horizons - Answer-surface soil A, surface soil B, and parent material _____________ is a term describing the ability of water to migrate through a soil profile under either _________ or __________ conditions. - Answer-Hydraulic conductivity, saturated, unsaturated Interconnected pores in the soil profile allow ______ and _______ to enter the soil...

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 (Ans- 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 increase pH B) pH will not be affected C) Significantly increase the pH D) Decrease the pH (Ans- D) Decrease the pH (v.1 pg 349-350) What is the purpose of a Parshall flume? A) measure turb...