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

Remedial measures for problems in turbid water - refraction, Define Remedia...

Define Remedial measures for Problems in Turbid Water - Refraction? There is little that can be done to overcome the effects of refraction. Image definition and contrast in tur

Lintel, Ask question #classfication of lintel Minimum 100 words accepted#

Ask question #classfication of lintel Minimum 100 words accepted#

3-d stress, If the resultant forces are resolved in the three co-ordinate d...

If the resultant forces are resolved in the three co-ordinate directions and divided by the area of the face of the cube we have the general state of 3-dimensional stress as shown.

Construction of embankment, Construction of Embankment: The following...

Construction of Embankment: The following steps describe embankment construction : (a) The ground is cleared and grubbed and all vegetation, grass, roots, etc. are removed

Explain information processing and perception, Explain Information Processi...

Explain Information Processing and Perception - Driver Performance The time required to respond successfully to any driving situation, such as an emergency, involves four stage

Explain the unconfined aquifer - ground water, Explain the Unconfined Aquif...

Explain the Unconfined Aquifer Also termed "free aquifer". Groundwater flows by gravity from high head to low head. The upper water surface is termed "water table", is influenc

What is sedimentation tank, Q. What is Sedimentation tank ? This is a p...

Q. What is Sedimentation tank ? This is a process in which the water is passed through bases or tanks in which the velocity of water is so reduced or water is given a period of

State the modulus of elasticity of concrete, State the Modulus of Elasticit...

State the Modulus of Elasticity of Concrete The Young's modulus of elasticity of concrete is primarily influenced by the elastic properties of the aggregate and to a lesser ex

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