FIRST CLASS GALORE

Wastewater Exam Package Deal A+

Wastewater Practice Exam Questions With Correct Answers A+ Odors occur when treatment becomes - AnswerAnaerobic What should an operator do before entering a manhole - AnswerTest for all hazardous gases and oxygen levels and ventilate the manhole before entering What treatment devices is commonly used to separate and remove large solids from raw wastewater - Answera mechanically raked bar screen What diseases are caused by pathogenic organisms that may be present in raw wastewater? - Answ...

Wastewater Exam Questions With Correct Answers A+ What does term anoxic mean? - Answerlimited oxygen is present less tahn 1mg/l but more than 0mg/l 'what does anerobic mean? - Answerthere is absolutely no dissolved oxygen what does eutrophicatiuon mean? - Answerits the natural process which by biological activity gradually increases with the age of a body of water what 2 chemicals contaminants in wastewater cause "rapid eutrophication"? - Answernitrogen and phosphorus what imme...

Wastewater Exam Questions With Correct Answers A+ The term pathogenic means - AnswerCapable of causing disease Question: The minimum separation, between sewer lines, and potable water lines is A. 8 feet B. 9 feet C. 10 feet - AnswerB. 9 feet An important step, in testing a sample, for Total Suspended Solids is - AnswerFiltering a sample Biochemical oxygen Demand, (BOD) test is based on? - AnswerMeasuring, the dissolved oxygen, used Results, of Biochemical Oxygen Demand, (BOD) sample, ...

Wastewater Exam Questions With Correct Answers A+ Approximate influent characteristics of municipal wastewater in terms of BOD5, TP, and TDS. (in terms of mg/L) - AnswerBOD5 (5-day biochemical oxygen demand): 100-350 mg/L, expressed in mg of O2/L TP (total phosphorus): 5-20 mg/L TDS (total dissolved solids): 250-1000 mg/L - particles that can not be filtered, includes dissolved solids, colloidal solids, and very small suspended particles Wastewater is made up of how much water in percent...

Wastewater Exam Questions With Correct Answers A+ V notch weirs attached to a primary effluent launder measure the flow rate. - AnswerFalse A major purpose of preliminary treatment is to protect pumps and other equipment from plugging, waring or possible damage - AnswerTrue The units ppm and mg/L are considered to be equivalent for wastewater calculations. - AnswerTrue A Parshall flume is often found in the "headworks" area of a wastewater plant. - AnswerTrue Chlorine demand = Chlo...

Wastewater III Study Exam Questions With Correct Answers A+ First action for a polymer spill - AnswerApply an absorbent to the spill such as sand or kitty litter and then sweep up the materials. Total discharge head includes - AnswerDischarge pressure head + static discharge head + Velocity head (outlet) + Friction Head (discharge line) Where is the best location to collect a sample? - AnswerA location that represents the entire waste stream or basin. What are the preservation and hold t...

Wastewater Grade 1 Exam Questions With Correct Answers A+ 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 Flowrate What is the typical removal efficiency of settable solids in a primary clarifier? - Answer95 to 99% Pumping scum from a primary clarifier can cause more piping problems than oth...

Wastewater B Test Exam Questions With Correct Answers A+ Percent of volatile solids normally in sludge - Answer70-80% D.O. levels in a primary clarifier - Answer0.5-1.0 MG/L Why are precautionary measures needed around an aeration basin? - Answerundertow and turbulence O.S.H.A. approved trench - Answernarrow excavation in which the depth is greater than the width; the width must be less than 15 feet What causes bulking? - Answer1. Excessive hydraulic loading, 2. Solids not promptly remo...

Wastewater treatment Exam Bundle A+