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

Rapid sand filter, use of rapid sand filter in grey water treatment units

use of rapid sand filter in grey water treatment units

Explain the signalized intersections - transportation, Explain the Signaliz...

Explain the Signalized Intersections Cycle length - the time required for one complete sequence of all signal indications Phase - the right-of-way (green), change (yellow),

Properties a water proofing system, Q- Mention 5 essential properties a wat...

Q- Mention 5 essential properties a water proofing system should have? Ans.- water proofing system should have the following essential properties :- a) It should be im

Define the planning an underwater inspection, Define the Planning an Underw...

Define the Planning an Underwater Inspection? Planning for underwater inspection is important because of - Unknown factors which may be discovered during the diving - Th

Cleanliness of surface - limitations of ultrasonic system, Define Cleanline...

Define Cleanliness of Surface - Limitations of Ultrasonic System? Sound energy transmission is greatly affected by marine growth on the surface of the concrete element. Ultraso

Bitumen, limitation in using with bitumen as watertight material

limitation in using with bitumen as watertight material

Sieve analysis, size of sieve to analysis the grading of 10 mm size stone g...

size of sieve to analysis the grading of 10 mm size stone grit

Explain the bernoulli energy equation, Explain the Bernoulli Energy Equatio...

Explain the Bernoulli Energy Equation Accounts for the fluid energy at any point in a fluid flow system. Units are in ft. Developed for energy without friction. The total energ

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