A groundwater treatment plant adds chlorine to oxidize iron and manganese for removal by filtration. The groundwater temperature during peak summer usage is 10°C and the pH is 7.8. Based on a tracer study, the t10 time from chlorine addition in the contract tank through filtration is 1.8 min. The t10 time in the clear well during peak pumpage is 8.0 min. The chlorine residual in the filter effluent is 0.8 mg/l and in the clear-well effluent is 0.4 mg/l. If the groundwater supply has to meet a 3-log virus inactivation, is the disinfection adequate? (show your work. You may clearly write your work down on a paper, take a picture and upload it. No grade if you don't show clearly your work).

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A groundwater treatment plant adds chlorine to oxidize iron and manganese for removal by
filtration. The groundwater temperature during peak summer usage is 10°C and the pH is 7.8.
Based on a tracer study, the t10 time from chlorine addition in the contract tank through
filtration is 1.8 min. The t10 time in the clear well during peak pumpage is 8.0 min. The
chlorine residual in the filter effluent is 0.8 mg/l and in the clear-well effluent is 0.4 mg/I. If the
groundwater supply has to meet a 3-log virus inactivation, is the disinfection adequate? (show
your work. You may clearly write your work down on a paper, take a picture and upload it. No
grade if you don't show clearly your work).
Transcribed Image Text:A groundwater treatment plant adds chlorine to oxidize iron and manganese for removal by filtration. The groundwater temperature during peak summer usage is 10°C and the pH is 7.8. Based on a tracer study, the t10 time from chlorine addition in the contract tank through filtration is 1.8 min. The t10 time in the clear well during peak pumpage is 8.0 min. The chlorine residual in the filter effluent is 0.8 mg/l and in the clear-well effluent is 0.4 mg/I. If the groundwater supply has to meet a 3-log virus inactivation, is the disinfection adequate? (show your work. You may clearly write your work down on a paper, take a picture and upload it. No grade if you don't show clearly your work).
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