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

Explain Fluid mechanics or properties - specific gravity, Fluid Mechanics o...

Fluid Mechanics or Properties - Specific Gravity Dimensionless ratio of a fluid's density to some standard reference density. For liquids and solids, the reference density is p

Survey, underground installations

underground installations

Simple stresses and strains, Simple stresses and strains: In this simp...

Simple stresses and strains: In this simple stresses and strains you have learnt the concepts of stress, strain, elastic modulus and the primary concepts in application to ana

Material which can endures vibrations and saline conditions, material which...

material which can endures vibrations and saline conditions

Permissible bearing pressure on poly tetra fluoro ethylene, Define Permissi...

Define Permissible Bearing Pressure on poly tetra fluoro ethylene? For the purpose of design, it is important to lay down permissible bearing pressure on PTFE sliding surfaces.

Explain p trap, Q. Explain P Trap? Trap is a depressed or bent sanitary...

Q. Explain P Trap? Trap is a depressed or bent sanitary fittings which always remains full of water it is water seal. Its functions are to prevent passage of foul air or gas

Airport management, Airport Management: Airlines (a)        Adequ...

Airport Management: Airlines (a)        Adequate space for each airline for ticketting, check-in and baggage handling, and (b)       Adequate space for airline staff.

State the angle of inclination of the failure plane, The stresses at failur...

The stresses at failure on the failure plane in a cohesionless soil mass were: Shear stress = 4 kN/m 2 ; normal stress = 10 kN/m 2 . Verify the resultant stress on the failure plan

Determine the equivalent of free float, The free float is equal to: a. L...

The free float is equal to: a. Latest allowable event occurrence time + Early finish time b. Earliest event occurrence time + early finish time c. Latest allowable event o

Material of steel tendons, Material of steel tendons The material of s...

Material of steel tendons The material of steel tendons also must be of a high strength. Tendons should possess required material and geometrical properties so that a desired

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