题目
题目
简答题

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:   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.  

查看解析

查看解析

标准答案
Please login to view
思路分析
Question restatement: - The setup provides an ozone contactor in a pipe: water ozone concentration c_d is 0.05 mg/L, flow velocity v is 0.15 m/s, pipe length L is 11 m. - The virus inactivation rate constant at ToC is given by k_p = 2.1744 × (1.0726)^{T_L}, with T_L in minutes and units arranged so that k_p c_d t yields a log10(N0/N). - Use Chick–Watson: log10(N0/N) = k_p c_d t, where t is the residence time in the contactor expressed in minutes. Option analysis: Option under consideration: 0.77 - Step 1: Determine the residence time t in the pipe. The water travels 11 m at 0.15 m/s, so t = L/v = 11 / 0.15 = 73.333... ......Login to view full explanation

登录即可查看完整答案

我们收录了全球超50000道考试原题与详细解析,现在登录,立即获得答案。

类似问题

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.  

更多留学生实用工具

加入我们，立即解锁 海量真题 与 独家解析，让复习快人一步！