Wastewater Operator

WASTEWATER OPERATOR GUIDE TO PREPARING FOR THE CERTIFICATION EXAMINATIONS (CLASS B-A OR III-IV) Anaerobic digestion gas handling systems are kept under positive pressure for what reason? - correct answer To prevent air from entering the system and mixing with digester gas, which could cause an explosion What are the components of an effective safety program? - correct answer Regular safety briefings, daily practice, a strong advocate for safety, and a strong central leader. Which of the...

Wastewater Operator Class D Exam Questions and Answers. The natural exchange of water between the earth and the air - Correct Answer hydrologic cycle ______________ causes surface water to enter the atmosphere and begin the Hydrologic Cycle - Correct Answer Evaporation Rain or snow falling from the clouds - Correct Answer Precipitation what causes water vapor to form clouds - Correct Answer Condensation generally better protected

Wastewater Operator Class D Exam Questions and Answers. The natural exchange of water between the earth and the air - Correct Answer hydrologic cycle ______________ causes surface water to enter the atmosphere and begin the Hydrologic Cycle - Correct Answer Evaporation Rain or snow falling from the clouds - Correct Answer Precipitation what causes water vapor to form clouds - Correct Answer Condensation generally better protected

Flow measurement system where flow stream contents are collected in container for fixed period of time - Timed gravimetric Uses a strong oxidizer to break down organic material - Chemically Oxidizable Carbon (COD) a measure of carbon dioxide given off when material is heated to 550° - Total Organic Carbon (TOC) What is the recommended detention time for a primary clarifier? - 1 1/2 - 2 hours What would be added to a lagoon/pond to subdue a strong odor and increase oxygen (O2)? - Sodium N...

General Wastewater Treatment: What is the pressure head caused by? - Water elevation General Wastewater Treatment: What color should the piping be that contains reclaimed water? - purple General Wastewater Treatment: What is the term for the height to which a column of water will rise in a well. - piezometric surface General Wastewater Treatment:

WasteWater Sources & Characteristics: What is the most common reason for a wastewater to contain intermittent large amounts of sand, gravel, and grit? - storm events WasteWater Sources & Characteristics: Combined wastewater is defined as - sanitary wastewater and stormwater runoff WasteWater Sources & Characteristics: In general, the solids content in wastewater is about - 0.1% WasteWater Sources & Characteristics: In general, what is the % of suspended solids in the total amount of soli...

Which dangerous gas will be more likely to rise near the surface of a manhole? ( A ) Hydrogen sulfide ( B ) Methane ( C ) Nitrogen ( D ) None of the above - ANSWERSB AnswerWhat type of pond has aerobic conditions near the top and anaerobic conditions at the bottom? ( A ) Fully aerated ( B ) Anaerobic digestion ( C ) Fermentation ( D ) Facultative - ANSWERSD AnswerWhat is it called when all of the demand for chlorine has been satisfied? ( A ) Breakpoint ( B ) Combined ( C ) Mono-...

What is the most common reason for a wastewater to contain intermittent large amounts of sand, gravel, and grit? (Ans- storm events Wastewater Sources & Characteristics: Combined wastewater is defined as (Ans- sanitary wastewater and stormwater runoff Wastewater Sources & Characteristics: In general, the solids content in wastewater is about (Ans- 0.1% Wastewater Sources & Characteristics: In general, what is the % of suspended solids in the total amount of solids (Ans- 3...

WasteWater Sources & Characteristics: What is the most common reason for a wastewater to contain intermittent large amounts of sand, gravel, and grit? -ANSWER storm events WasteWater Sources & Characteristics: Combined wastewater is defined as -ANSWER sanitary wastewater and stormwater runoff WasteWater Sources & Characteristics: In general, the solids content in wastewater is about -ANSWER 0.1% WasteWater Sources & Characteristics: In general, what is the % of suspended sol...

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