Ấn unfiltered water supply is disinfected with an applied chlorine dose of 2 mg L as Clh. Thepeak hourly flow is 0.05 m/s, the water has a pH of 6.5 and a temperature of 25°C. Assume that50% of the applied dose is consumed by reactions, leaving a free chlorine residual of 1 mg/L asCl.a) If the concentration of Giardia cysts in the drinking water supply is to be decreased from10 per 1000 L to 1 per 1000 L, calculate the percentage of inactivation.b) You are asked to design a chlorine contact reactor to achieve at least 99.9% inactivationof Giardia cysts. What is the required detention time and volume of the reactor if thebaffling condition is superior?c) If the pH is increased to 8.0 for corrosion control before disinfection (not nomally apractice that is used), what is the % inactivation of Giardia achieved in the tank?

Given: Chlorine = 2 mh/l Discharge=0.05m3s =0.05×3600…

unfiltered water supply is disınfected with an applied chlorine dose of 2 mg/L as Cl. The ak hourly flow is 0.05 m?/s, the water has a pH of 6.5 and a temperature of 25°C. Assume that % of the applied dose is consumed by reactions, leaving a free chlorine residual of 1 mg/L as

unfiltered water supply is disınfected with an applied chlorine dose of 2 mg/L as Cl. The ak hourly flow is 0.05 m?/s, the water has a pH of 6.5 and a temperature of 25°C. Assume that % of the applied dose is consumed by reactions, leaving a free chlorine residual of 1 mg/L as

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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