Wastewater b test 1 - Study guides, Revision notes & Summaries

Wastewater Treatment Operator Certification Test #2 with Complete SolutionsWastewater Treatment Operator Certification Test #2 with Complete SolutionsWastewater Treatment Operator Certification Test #2 with Complete SolutionsWastewater Treatment Operator Certification Test #2 with 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% - ANSWER-C) 20 to 50% (v.1 pg 129) What does the "F" in F/M ratio ...

A flow of 60 gph is equal to? a. 1 mgd b. 1mg/L c. 10 gpm d. 1 gpm - Answer d. 1 gpm (60 gph / 60 min/hr ) The slope of a sewer is measured by a. The difference from the crown to the invert b. The difference in invert elevations over the length of the pipe c. Using the diameter of the pipe d. Only entering the manhole - Answer b. The difference in invert elevation over the length of the pipe An air gap can be used to a. Clean sewer blockages caused by greas...

Alabama Wastewater Collection Grade 1 C Exam Questions With Verified Solutions A flow of 60 gph is equal to? a. 1 mgd b. 1mg/L c. 10 gpm d. 1 gpm - ANS d. 1 gpm (60 gph / 60 min/hr ) The slope of a sewer is measured by a. The difference from the crown to the invert b. The difference in invert elevations over the length of the pipe c. Using the diameter of the pipe d. Only entering the manhole - ANS b. The difference in invert elevation over the length of t...

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 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...

Operation of Wastewater Treatment prep complete exam questions and verified answers 2024/2025 An Imhoff cone is used to measure________solids. A. suspended B. colloidal C. volatile D. settleable D. settleable (Operation of Wastewater Treatment Plants, Volume 1 by Kenneth D. Kerri) A _____ flume is widely used for measuring wastewater flow. Parshall (Operation of Wastewater Treatment Plants, Volume 1 by Kenneth D. Kerri) Velocity of flow in a grit channel must be reduced ...

WASTEWATER B TEST EXAM 2024 WITH 100% CORRECT ANSWERS Percent of volatile solids normally in sludge - correct answer 70-80% D.O. levels in a primary clarifier - correct answer 0.5-1.0 MG/L Why are precautionary measures needed around an aeration basin? - correct answer undertow and turbulence O.S.H.A. approved trench - correct answer narrow excavation in which the depth is greater than the width; the width must be less than 15 feet What causes bulking? - correct answer 1. Excess...

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...

Texas Wastewater Class A Exam (Latest 2023/ 2024 Update) Questions and Verified Answers| 100% Correct | Grade A Q: The sludge from a primary clarifier should percent solids? Answer: 4% to 6% Q: What is eutrophication in a pond system? Answer: Enrichment with nitrogen and phosphorous Causes algae blooms (b and c) Q: How often should pH meters be calibrated? Answer: Daily Q: In Texas, pH meters are required to be calibrated on how many buffers? Answer...

Final disposal of sludge may include all of the following except Choose one answer. a. composting b. sanitary landfill c. land application d. vegetable garden dumping d. vegetable garden dumping A watertight tank designed to slow down the movement of raw sewage and wastes passing through to the soils is known as a Choose one answer. a. pit privy b. spring house c. septic tank d. grease trap c. septic tank Sludge and scum accumulation, and the appearance of particles of solids in t...