CIVICS

What is the methane content in a properly operating anaerobic digester? 65 to 70% by volume What will the addition of chlorine gas do to the pH of wastewater? decrease the pH What is the purpose of a Parshall Flume? Measure the flow rate What is the typical removal efficency of settleable solids in a primary clarifier? 95 to 99% Which of the follwing is true about pumoing scum from a primary clarifier? scum causes more piping problems than other substances pumped at a wastewater tr...

1 mg/l is the same as 1 part per billion F A scada system is capable of monitoring and controlling equipment from where? remote location A Discharge Monitoring Report is typically submitted to the regulatory agency on daily basis False = Monthly A mechanical seal is used to prevent leaks between where? between the pump casing and shaft Alkalinity is the capacity of a liquid to neutralize base False = Alkalinity neutralizes acids Typical mixed liquor suspended solids concentrati...

Preliminary Treatment the 1st stage of sewage treatment where large debris, such as sticks, grit, and rags pas through a screen followed by a grit chamber, where the flow of water is slowed enough to allow for sedimentation. What stage of treatment is grit removal usually accomplished in? preliminary treatment Rotating Biological Contactor a type of biological secondary treatment process How are protozoa (cause of amoebic dysentery) destroyed? disinfection Other than stream dischar...

What is the supreme law of the land? The Constitution What does the Constitution do? Sets up the government Defines the government Protects the basic rights of Americans The idea of self-government is in the first three words of the Constitution. What are these words? We the People What is an amendment? A change (to the Constitution) An addition (to the Constitution) What do we call the first ten amendments to the Constitution? The Bill of Rights What is ONE right or freedom f...