Water Treatment Class D (practice exam -2) Questions With 100- Correct Answers, Water Treatment Class D (practice exam -4) Questions With 100- Correct An swers, Water Treatment Class D Study Guide Exam Test Practice Questions & Answers, Water Treatment Class D (practice exam -1) Verified Solution, ...
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What is typical characteristic of colloidal particles in raw water? - ANS - Negative charge on the surface What is short circuiting in a clarifier? - ANS - Shorter settling time in basin. What would cause a filter to begin backwashing? - ANS - head loss What is the purpose of surface was...
Preview 2 out of 8 pages
Add to cartWhat is typical characteristic of colloidal particles in raw water? - ANS - Negative charge on the surface What is short circuiting in a clarifier? - ANS - Shorter settling time in basin. What would cause a filter to begin backwashing? - ANS - head loss What is the purpose of surface was...
Which of the following is true regarding water sampling? - ANS - Collecting water samples at a water treatment plant is no different than collecting samples from a stream or river. What has a "rotten egg" smell? - ANS - hydrogen sulfide Which coliform bacteria test involves the use of ...
Preview 2 out of 8 pages
Add to cartWhich of the following is true regarding water sampling? - ANS - Collecting water samples at a water treatment plant is no different than collecting samples from a stream or river. What has a "rotten egg" smell? - ANS - hydrogen sulfide Which coliform bacteria test involves the use of ...
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 ou...
Preview 2 out of 8 pages
Add to cartIf 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 ou...
Which is the best type of gasket to use when connecting a chlorine cylinder or container to the chlorine feed system? - ANS - Lead gasket Which part of the human body is the most vulnerable to allowing microorganisms to enter it? - ANS - Eyes The organisms used to indicate the likelihood tha...
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Add to cartWhich is the best type of gasket to use when connecting a chlorine cylinder or container to the chlorine feed system? - ANS - Lead gasket Which part of the human body is the most vulnerable to allowing microorganisms to enter it? - ANS - Eyes The organisms used to indicate the likelihood tha...
Which of the following is a requirement for viruses under the surface water treatment rule? - ANS - 99.99% removal and/or inactivation. What is the process that transfers water vapor from living plants into the atmosphere? - ANS - Evapotranspiration When must a repeat sample be taken? - ANS ...
Preview 2 out of 7 pages
Add to cartWhich of the following is a requirement for viruses under the surface water treatment rule? - ANS - 99.99% removal and/or inactivation. What is the process that transfers water vapor from living plants into the atmosphere? - ANS - Evapotranspiration When must a repeat sample be taken? - ANS ...
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