A drinking water treatment plant with conventional treatment uses on disinfection segment consisting of a rectangular basin, with a theoretical detention of 270 min with a baffling factor of 0.5. The average free chlorine residual recorded at the disinfection segment monitoring location in 1.6 mg/L. The lowest free chlorine residual recorded was 1.2 mg/L during peak flow. The water temperature is 5C and pH is 7.5 a) Determine the inactivation ratio if 0.5-log inactivation of Giardia lamblia cysts is required b) Under these design conditions, have Giardia lamblia cysts been adequently inactivated? c) Will the plant achieve adequete Giardia lamblia inactivation if 0.5-log inactivation is required but the water temperature is raised to 10C? d) Will the plant achieve adequete Giardia lamblia inactivation if 3-log inactivation is required and the water temperature remain at 5C? e) Will the plant achieve adequete Giardia lamblia inactivation if 3-log inactivation is required and the water temperature is raised to 10C
A drinking water treatment plant with conventional treatment uses on disinfection segment consisting of a rectangular basin, with a theoretical detention of 270 min with a baffling factor of 0.5. The average free chlorine residual recorded at the disinfection segment monitoring location in 1.6 mg/L. The lowest free chlorine residual recorded was 1.2 mg/L during peak flow. The water temperature is 5C and pH is 7.5
a) Determine the inactivation ratio if 0.5-log inactivation of Giardia lamblia cysts is required
b) Under these design conditions, have Giardia lamblia cysts been adequently inactivated?
c) Will the plant achieve adequete Giardia lamblia inactivation if 0.5-log inactivation is required but the water temperature is raised to 10C?
d) Will the plant achieve adequete Giardia lamblia inactivation if 3-log inactivation is required and the water temperature remain at 5C?
e) Will the plant achieve adequete Giardia lamblia inactivation if 3-log inactivation is required and the water temperature is raised to 10C
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