1. The city of Ten Sleep proposes to use Crater Lake for its water supply. Water quality analysis results revealed no detectable Giardia, viruses, or Cryptosporidium in the source water (Giardia cysts <1/100 L; Viruses <1/100 L; Cryptosporidium oocysts <0.075/L). Design a disinfection system to treat 3,500 m³/d by direct filtration and chlorine dioxide (CIO2) will be used as a primary disinfectant. The filtered water has a pH of 7.5 and a temperature of 5°C. Provide the following information for your design: • Determine the total removal/inactivation required for disinfection for each pathogen group • Determine the required CT value to achieve the required inactivation for the design conditions (pH, temperature)
1. The city of Ten Sleep proposes to use Crater Lake for its water supply. Water quality analysis results revealed no detectable Giardia, viruses, or Cryptosporidium in the source water (Giardia cysts <1/100 L; Viruses <1/100 L; Cryptosporidium oocysts <0.075/L). Design a disinfection system to treat 3,500 m³/d by direct filtration and chlorine dioxide (CIO2) will be used as a primary disinfectant. The filtered water has a pH of 7.5 and a temperature of 5°C. Provide the following information for your design: • Determine the total removal/inactivation required for disinfection for each pathogen group • Determine the required CT value to achieve the required inactivation for the design conditions (pH, temperature)
Solid Waste Engineering
3rd Edition
ISBN:9781305635203
Author:Worrell, William A.
Publisher:Worrell, William A.
Chapter2: Municipal Solid Waste Characteristics And Quantities
Section: Chapter Questions
Problem 2.16P
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
Transcribed Image Text:1. The city of Ten Sleep proposes to use Crater Lake for its water supply. Water quality analysis results revealed
no detectable Giardia, viruses, or Cryptosporidium in the source water (Giardia cysts <1/100 L; Viruses
<1/100 L; Cryptosporidium oocysts <0.075/L). Design a disinfection system to treat 3,500 m³/d by direct
filtration and chlorine dioxide (CIO2) will be used as a primary disinfectant. The filtered water has a pH of 7.5
and a temperature of 5°C. Provide the following information for your design:
• Determine the total removal/inactivation required for disinfection for each pathogen group
• Determine the required CT value to achieve the required inactivation for the design conditions (pH,
temperature)
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