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7 Cards in this Set
- Front
- Back
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The Miramar WWTP has a treatment basin that is 100‘L 25' W , and 18‘ D. What is the volume of the tank in Cubic feet? Area?
Volume a. 45,000 ft^3 b. 54, 000 cu ft c. 90,000 cu ft d. 25000 cu. ft Area a. 2500 ft^2 b. 1800 sq ft c. 450 sq ft d. 5000 ft^2 |
(L)(W)(D)
a. 45,000 ft^3 a. 2500 ft^2 |
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Cubic volume can hold 7.48 gal, how many gals in 45,000^3?
a. .337 MG b. 430,920 gal c. .673 MG d. 18,700 gal |
a. .337 MG
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What factors control the detention time
a. operator’s decision b. tank volume c. flow d. b & c |
d. b & c
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Which of the following cause slower settling?
a. overdose of coagulant b. warmer temp c. lower temp d. lime additio |
c. lower temp
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What is the best way to control chemical dosages in a treatment plant?
a. trial and error b.venturi meter c. electronically controlled chemical feeders d. pounds formula |
c. electronically controlled chemical feeders
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How can you improve sedimentation?
a. decrease dosage b. reduce detention time c. install tube settlers d. introduce filter aids |
c. install tube settlers
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inaccurate test results are generally due to ?
a. failure to calibrate AA b. old reagents c. poor sampling techniques d. untrained lab personnel |
c. poor sampling techniques
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