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

Depth of boring for multi-storeyed building, Depth of Boring  for Multi-st...

Depth of Boring  for Multi-storeyed Building Peck has recommended that first drill hole is to be made up to depth at which the presence of a thick layer of soft clay with a hig

Proctor test for GSB material, what is the procedure for gsb proctor test f...

what is the procedure for gsb proctor test for matrial sampling for lab density

Dam, Check for stability in a dam

Check for stability in a dam

Vertical gradient - geometric design of roads, Vertical Gradient: Ver...

Vertical Gradient: Vertical gradient can be of three types: Ruling Gradient Used as a matter of course. Limiting Gradient Used in situations where site condit

Changeable depth bridge decks, Question What is the sucker deck principle f...

Question What is the sucker deck principle for changeable depth bridge decks ? Answer For a variable depth bridge deck, depth of continuous multi-span bridge deck is greater tha

Design a sanitary branch sewer, Q. For what capacity would you design a san...

Q. For what capacity would you design a sanitary branch sewer to serve a section having a population of 12500 persons with a rate of supply of 135 Liters. Ans.- Average flow

Cement bag question., composition of cement in cover bag should be written ...

composition of cement in cover bag should be written or not/ If written which country uses ?please specify the name ?

Primavera, hi contactme 9902142308

hi contactme 9902142308

Work, Grouted or Penetration Macadam:

Grouted or Penetration Macadam:

Role of each mode of transport, Role of Each Mode of Transport: Each ...

Role of Each Mode of Transport: Each mode of transport has its own role to play in a country. The role of each is as under: Roads : Road transport carries 80 per cent of

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