Aeration - Study guides, Class notes & Summaries

CRCST Exam Questions and Answers 100% CorrectCRCST Exam Questions and Answers 100% CorrectCRCST Exam Questions and Answers 100% CorrectCRCST Exam Questions and Answers 100% CorrectCRCST Exam Questions and Answers 100% Correct Classification for Sterilization Packaging - ANSWER-Class II Medical Devices (those presenting a potential risk) Packaging used for steam sterilization must be capable of withstanding high temperatures of? - ANSWER-250'F - 275'F (121'C - 135'C) Process in which a...

Wastewater Treatment Operator Certification Test #1 Questions With 100% Verified Answers 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 - answerC) 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 - answerD) Decrease t...

What is the predominant organism in a healthy activated sludge treatment plant? A. Stalked ciliates B. rotifers C. nematodes D. amoebas - A. Stalked Ciliates A composite sample must be? A. sporadically collected in the treatment plant B. taken at one time C. analyzed immediately D. representative and sub-samples time spaced over 15 minutes apart - D. representative and sub-samples time spaced over 15 minutes apart What is the standard volume for a BOD sample bottle? A. 150 m...

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...

Class C Wastewater Exam Questions and Answers 2024/2025 (Graded A+) A complete mix activated sludge plant has a fast settling sludge and high amounts of pin floc leaving the clarifier. One way to correct this problem is to : A. Increase the RAS Flow B. Reduce Wasting Rates C. Increase dissolved oxygen levels. D. Increase the F/M ratio by wasting more E. Increase the sludge age by wasting less. - ANSWER-D. Increase the F/M Ratio by Wasting More Which of the following flow rates should be ...

Wastewater Treatment Operator Certification Test Questions and Answers Latest 2024/2025 | 100% Correct. The name of the State Agency responsible for enforcing pollution control laws in Texas is – a. Texas Water Development Board b. Texas Water Commission c. Texas Section of EPA d. Texas Commission on Environmental Quality e. Texas Water Resource and Conservation Commission 2. The term pathogenic means – a. Aerobic Bacteria b. Anaerobic Bacteria c. Fecal Matter d. Coliform Bacter...

3A Turfgrass Pest Management Study Guide with Complete Solutions3A Turfgrass Pest Management Study Guide with Complete Solutions3A Turfgrass Pest Management Study Guide with Complete SolutionsVarieties of grass containing endophyte fungi are an example of: - ANSWER-Plant resistance. Raking, thatch removal and aeration are examples of: - ANSWER-Cultural controls. Hand removal, traps, barriers and repellents are examples of: - ANSWER-Mechanical and physical controls. Example of a turfgras...

Wastewater Treatment Operator Certification Test Study Guide (Questions and Answers) Latest 2024/2025. The name of the State Agency responsible for enforcing pollution control laws in Texas is – a. Texas Water Development Board b. Texas Water Commission c. Texas Section of EPA d. Texas Commission on Environmental Quality e. Texas Water Resource and Conservation Commission 2. The term pathogenic means – a. Aerobic Bacteria b. Anaerobic Bacteria c. Fecal Matter d. Coliform Bacteri...

True or False: Sometimes State or local regulations differ from Federal regulations and when that happens, the most stringent regulations apply. - True Which type of fire extinguisher should be used on flammable liquids? - Type A - Type B - Type C - Type D - Type B Deionized water is used for: -Sterile irrigation - Heating/cooling therapy units - Injection - Steam sterilizers - Sterile Irrigation Minimum Recommendations for EtO Aeration

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...