Explain chlorine residuals, Civil Engineering

Assignment Help:

Explain Chlorine Residuals

Free Chlorine Residuals: Cl2, HOCl, OCl-  

Combined Chlorine Residuals: Chloramines (mono, di and tri chloramines)

The disinfecting ability of chloramines is much lower than that of free chlorine.

Satisfactory results can be obtained if a free chlorine residual of 0.2 to 0.5 mg/L can be maintained in the distribution system. Also if approved by health authorities  combined chlorine residuals in the range of 1 to 2 mg/L should maintained at distant points in the distribution system.    

 Trihalomethanes (the following) which are formed as a result of chlorination are harmful and this must be avoided.

CHCl3 trichloromethane (chloroform)

CHBrCl2  bromodichloromethane

CHBr2Cl dibromochloromethane

CHBr3   tribromomethane (bromoform)


Related Discussions:- Explain chlorine residuals

Define the fatigue failure - underwater inspection of bridge, Define the Fa...

Define the Fatigue failure - underwater inspection of bridge? Fatigue failure results in the fracture of structural members as a consequence of repeated high loading.  Fatigue

Define the vapor pressure, Define the Vapor Pressure The partial pressu...

Define the Vapor Pressure The partial pressure exerted at the surface of a liquid at the liquid/vapor interface. The liquid molecules are released into the vapor phase when the

Explain subcritical flow and supercritical flow, Explain Subcritical flow a...

Explain Subcritical flow and Supercritical flow Subcritical flow: The depth of flow is greater than critical depth and the velocity of the fluid is slow. Also termed "tranquil"

Timber, What is exogenous tree?

What is exogenous tree?

I have a take home quiz, Hello I have a take home final needs be ordered, d...

Hello I have a take home final needs be ordered, do you have very well skilled professionals to make it?

Structure, what is the cutelment length

what is the cutelment length

Estimate the jam density in one lane of trucks, At a large port facility ne...

At a large port facility near New York City tractor-trailer trucks are lined-up in long queues as their drivers wait to have their containers inspected and documents processed.  As

Explain standard penetration test used in soil exploration, Explain the "St...

Explain the "Standard Penetration Test" used in soil exploration. List the information that can be obtained by the test when made in (a) clay, (b) sand. Comment on the correctio

Define the concept of creep of concrete, Define the concept of Creep of Con...

Define the concept of Creep of Concrete Creep of concrete is another important characteristic. It represents progressive strains in concrete which occur at constant value of st

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd