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WASTEWATER CLASS 1 TEST QUESTIONS WITH 100% ACCURATE SOLUTIONS

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WASTEWATER CLASS 1 TEST QUESTIONS WITH 100% ACCURATE SOLUTIONS

Institution
Wastewater
Course
Wastewater

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WASTEWATER CLASS 1 TEST QUESTIONS WITH 100%
ACCURATE SOLUTIONS.


1) What is the primary objective of the Clean Water Act of 1972? -- Answer ✔✔ Restore
l. l. l. l. l. l. l. l. l. l. l. l. l. l. l.




l. and maintain the chemical, physical, and biological integrity of water in the US
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2) When cells use their own protoplasm and start to eat each other, as food to provide
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l. the energy to maintain life, this is known as what type of growth? -- Answer ✔✔
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l. Endogenous


3) Why is sampling of wastewater important? -- Answer ✔✔ Evaluate the wastewater
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l. treatment process l.




4) What is the purpose of the Biochemical Oxygen Demand Test? -- Answer ✔✔
l. l. l. l. l. l. l. l. l. l. l. l.




l. Measures the amount of oxygen used by microorganisms l. l. l. l. l. l. l.




5) The type of pump that is most common in a wastewater treatment facility is a? --
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l. Answer ✔✔ Centrifugal l. l.




6) What does NPDES stand for? -- Answer ✔✔ National Pollutant Discharge Elimination
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l. System


7) Head is a measure of pressure always expressed in? -- Answer ✔✔ Feet
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8) A mixture of activated sludge and wastewater is called? -- Answer ✔✔ Mixed liquor
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, 9) Which test measures the solids in and out of the treatment process for plant efficiency?
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l. -- Answer ✔✔ Total suspended solids test
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10) Complete mix, step aeration, and contact stabilization are modifications of what
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l. process? -- Answer ✔✔ Activated sludge l. l. l. l. l.




11) One horsepower is equal to lifting? -- Answer ✔✔ 33,000 pounds one foot in one
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l. minute


12) Municipal wastewater consists of approximately what percentage of water? -- Answer
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l. ✔✔ 99.9% l.




13) Sewers that convey both sanitary wastes and storm waters are called? -- Answer ✔✔
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l. Combined sewers l.




14) The component in the aeration system that breaks up the air bubbles is known as the? -
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- Answer ✔✔ Diffuser
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15) As the temperature ????? Microorganisms accelerate consumption of Organics --
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l. Answer ✔✔ Increases l. l.




16) Grab samples taken in sizes that correspond to the flow rate are known as? -- Answer
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l. ✔✔ Flow proportionall. l.




17) One electrical horsepower is equal to? -- Answer ✔✔ 0.746 kilowatts
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18) Disease causing organisms are called? -- Answer ✔✔ Pathogens
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19) MSDS stands for? -- Answer ✔✔ Material Safety Data Sheet
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