3.3 Three grit chambers are currently used to treat grits in a WWTP. Each channel is 2.5 ft wide and has a water depth of 2 ft. What is the velocity when the influent flow rate is 12 ft³/sec? a) 1.75 ft/sec b) 0.74 ft/sec c) 1.05 ft/sec d) 0.80 ft/sec 3.4 You performed settling test and found 600 mL settled after 30 min. If the MLSS in the aeration basin was 3000 mg/L, do you have problem? a) yes b) no c) no enough info. d) need to redo test
3.3 Three grit chambers are currently used to treat grits in a WWTP. Each channel is 2.5 ft wide and has a water depth of 2 ft. What is the velocity when the influent flow rate is 12 ft³/sec? a) 1.75 ft/sec b) 0.74 ft/sec c) 1.05 ft/sec d) 0.80 ft/sec 3.4 You performed settling test and found 600 mL settled after 30 min. If the MLSS in the aeration basin was 3000 mg/L, do you have problem? a) yes b) no c) no enough info. d) need to redo test
Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter11: Ground Improvement
Section: Chapter Questions
Problem 11.8P
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![3.3 Three grit chambers are currently used to treat grits in a WWTP. Each channel is 2.5 ft wide and has a
water depth of 2 ft. What is the velocity when the influent flow rate is 12 ft³/sec?
a) 1.75 ft/sec
b) 0.74 ft/sec
c) 1.05 ft/sec
d) 0.80 ft/sec
3.4 You performed settling test and found 600 mL settled after 30 min. If the MLSS in the aeration basin
was 3000 mg/L, do you have problem? a) yes b) no c) no enough info. d) need to redo test](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd0e3e77f-c04f-4715-a2a8-0ee1f7d92810%2Fcb7c1e09-e179-475f-810e-e35a0b405ebe%2Fheonqvh_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3.3 Three grit chambers are currently used to treat grits in a WWTP. Each channel is 2.5 ft wide and has a
water depth of 2 ft. What is the velocity when the influent flow rate is 12 ft³/sec?
a) 1.75 ft/sec
b) 0.74 ft/sec
c) 1.05 ft/sec
d) 0.80 ft/sec
3.4 You performed settling test and found 600 mL settled after 30 min. If the MLSS in the aeration basin
was 3000 mg/L, do you have problem? a) yes b) no c) no enough info. d) need to redo test
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