Ca Grade 2 Wastewater Treatment Operator Practice Exam 1 Questions And Answers |Complete Solutions

Ca Grade 2 Wastewater Treatment Operator Practice Exam 1 Questions And Answers |Complete Solutions What is the methane content in a properly operating anaerobic digester? - answer65 to 70% by volume What will the addition of chlorine gas do to the pH of wastewater? - answerdecrease the pH What is the purpose of a Parshall Flume? - answerMeasure the flow rate What is the typical removal efficency of settleable solids in a primary clarifier? - answer95 to 99% Which of the follwing is true about pumoing scum from a primary clarifier? - answerscum causes more piping problems than other substances pumped at a wastewater treatment plant What might cause thick billows of white sudsy foam in the aeration tank? - answerMLSS is too low What does the M in F/M ratio represent? - answerThe mixed liquor volatile suspended solids in the aeration tank In general, how will warmer temp affect the settling rate of solids in a clarifer? - answerIncrease the settling rate What could happen if the digester gas is mixed with air(85 to 95% by volume)? - answerCause an explosion How will algae impact the chlorine demand in the pond effluent? - answerincrease the chlorine demand Which of the following is true about a positive displacement pump? - answerit must never be started with the discharge valve closed What is true about the F/M ratio? - answerthe volume of the secondary clarifier is not needed to determine the f/m ratio Which of the following is one of the basic rules of lab work? - answernever pipet hazardous material with your mouth, even if the pipet has been sterialized What is the recirculation ratio for a trickling filter? - answerQr/Q Which of the following is true about COD a