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An ozone disinfection system uses a section of pipe as the disinfection contactor. The concentration of ozone in the water is 0.06 mg/L, the velocity in the pipe is 0.2 m/s, the pipe length is 17 m. The pathogen inactivation rate constant, kp, for viruses at ToC is given by: 𝑘 𝑝 = 2.1744 × ( 1.0726 ) 𝑇 L mg . min Calculate the log inactivation credit for viruses at 25oC (to 2 deicmal places) using the Chick-Watson model: 𝑙 𝑜 𝑔 10 ( 𝑁 𝑜 𝑁 ) = 𝑘 𝑃 𝑐 𝑑 𝑡 where cd is in units of mg/L and t is in standard units of time.
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The question provides a disinfection scenario and asks for the log inactivation credit for viruses at 25°C using the Chick-Watson model. Since there are no listed answer options to evaluate, I will walk through the calculation step by step using the given data and formula.
First, restate the key given values: water ozone concentration cd = 0.06 mg/L, pipe velocity v = 0.2 m/s, pipe length L = 17 m. The goal is to compute log10(N0/N) = kp * cd * t, where t is the residence time in stand......Login to view full explanationLog in for full answers
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An ozone disinfection system uses a section of pipe as the disinfection contactor. The concentration of ozone in the water is 0.09 mg/L, the velocity in the pipe is 0.11 m/s, the pipe length is 16 m. The pathogen inactivation rate constant, kp, for viruses at ToC is given by: kp=2.1744×(1.0726)TLmg.min Calculate the log inactivation credit for viruses at 25oC (to 2 deicmal places) using the Chick-Watson model: log_{10}(\frac{ N_o} {N}) = k_P c_d t where cd is in units of mg/L and t is in standard units of time.
An ozone disinfection system uses a section of pipe as the disinfection contactor. The concentration of ozone in the water is 0.09 mg/L, the velocity in the pipe is 0.11 m/s, the pipe length is 16 m. The pathogen inactivation rate constant, kp, for viruses at ToC is given by: 𝑘 𝑝 = 2.1744 × ( 1.0726 ) 𝑇 L mg . min Calculate the log inactivation credit for viruses at 25oC (to 2 deicmal places) using the Chick-Watson model: 𝑙 𝑜 𝑔 10 ( 𝑁 𝑜 𝑁 ) = 𝑘 𝑃 𝑐 𝑑 𝑡 where cd is in units of mg/L and t is in standard units of time.
An ozone disinfection system uses a section of pipe as the disinfection contactor. The concentration of ozone in the water is 0.09 mg/L, the velocity in the pipe is 0.11 m/s, the pipe length is 16 m. The pathogen inactivation rate constant, kp, for viruses at ToC is given by: Calculate the log inactivation credit for viruses at 25oC (to 2 deicmal places) using the Chick-Watson model: where cd is in units of mg/L and t is in standard units of time.
An ozone disinfection system uses a section of pipe as the disinfection contactor. The concentration of ozone in the water is 0.05 mg/L, the velocity in the pipe is 0.15 m/s, the pipe length is 11 m. The pathogen inactivation rate constant, kp, for viruses at ToC is given by: kp=2.1744×(1.0726)T L mg.min Calculate the log inactivation credit for viruses at 25oC (to 2 deicmal places) using the Chick-Watson model: log10( No N )=kPcdt where cd is in units of mg/L and t is in standard units of time.
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