What is chlorine demand - Study guides, Class notes & Summaries

Wastewater Treatment Operator Certification Test #1 Complete Questions And 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 the pH ...

Rule of capture - Permits owner of a well to pump as much water as desired, even if water is drained from beneath the land of others when treating surface water, the process of coagulation will be affected by - all of the above a public water system is responsible for providing - all of the above a common type of oxidant that is used at most surface water treatment plants to kill bacteria and to prevent trihalomethane formation is - combined chlorine Which of the following is a requi...

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 #1 Complete Questions And 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 the pH ...

Water Treatment Plant Operator Exam Questions With Answers Latest Updated 2024/2025 Graded A+. What is used as a chemical coagulant? - Answer Alum The correct order of treatment in a surface water plant is... - Answer Coagulation, Flocculation, Sedimentation and Filtration In determining the proper dosage of alum, the most useful test is the____________ test. - Answer Jar If sludge is not continually removed from the sedimentation basin, its accumulation results in? - Answer Turbidity The...

Water Treatment Plant Operator Exam Questions With Answers Latest Updated 2024/2025 (Graded A+) What is used as a chemical coagulant? - Answer Alum The correct order of treatment in a surface water plant is... - Answer Coagulation, Flocculation, Sedimentation and Filtration In determining the proper dosage of alum, the most useful test is the____________ test. - Answer Jar If sludge is not continually removed from the sedimentation basin, its accumulation results in? - Answer Turbidity Th...

What is the most important factor affecting the useful life of service lines? It is the ability of the material to resist internal and external corrosion When does Suction Head exist? Suction head exists when the source of supply is above the centerline of the pump. What is Net positive Suction Head (NPSH) NPSH is the pressure under which water enters the eye of the impeller in a centrifugal pump. Insufficient NPSH is the main cause of pump cavitation Explain and expand on Chlorine Di...

What does the term 'contact time' mean? a) it is the amount of time a person is exposed to chlorine b) it is the amount of time allowed for chlorine to react in water to provide disinfection c) it is the amount of time a coagulant is exposed to water before flocculation occurs d) it is the amount of time it takes for chlorine to sterilize water - ️️b) it is the amount of time allowed for chlorine to react in water to provide disinfection What happens when a sewer is surcharged? a) i...

If 2.5mg/L of chlorine is dosed, and there is 0.5mg/L of residual, what is the reason for the residual? - ANS - The residual is present as a safeguard for unanticipated chlorine demand in the distribution system Which of the following must always be done before repairing a pump? - ANS - Lock out equipment Which of the following is least likely to affect the effectiveness of chlorine? - ANS - Sodium Which of the following is considered safe to drink? - ANS - no pathogens Which rea...

TCEQ class c water license Exam Questions And Answers State Agency responsible for enforcing the safe drinking water act in Texas Texas Commission on environmental Quality What minerals can cause water hardness Calcium and magnesium A public water system must at all times provide Adequate quantity of water, pressure, and disinfection A source groundwater would be aquifer Fecal coliform organisms sometimes found in water supplies are an indication that Water supply is ...