Aeration - Study guides, Class notes & Summaries
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Wastewater Treatment Operator Certification Test Questions and Answers Latest 2024/2025 | 100% Correct.
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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...
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3A Turfgrass Pest Management Study Guide with Complete Solutions
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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...
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Wastewater Treatment Operator Certification Test 1: Questions & Answers: Updated Solution
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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...
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Wastewater Treatment Operator Certification Test #1 Questions With 100% Verified Answers
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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...
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Class C Wastewater Exam Questions and Answers 2024/2025 (Graded A+)
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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 ...
Too much month left at the end of the money?
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The Ultimate IAHCSMM CRCST Practice Test Quiz | 100% Correct Answers | Verified | Latest 2024 Version
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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
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Wastewater Treatment Operator Certification Test Study Guide (Questions and Answers) Latest 2024/2025
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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...
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Wastewater Treatment Operator Certification Test #2 | 80 Questions and Correct Answers 2024/2025
- Exam (elaborations) • 30 pages • 2024
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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...
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Wastewater Treatment Operator Certification Test #2 Questions And Answers |Complete Solutions
- Exam (elaborations) • 20 pages • 2024
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Wastewater Treatment Operator 
Certification Test #2 Questions And Answers 
|Complete Solutions 
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% - answerC) 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 flowi...
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Waste Water Operator Lv 1 Exam Prep: Questions & Answers: Updated A+ Guide
- Exam (elaborations) • 11 pages • 2024
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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...
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