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 in brief about the term - anchorage, Explain brief about the term -...

Explain brief about the term - Anchorage A device used to anchor tendons at the end of a concrete member is called as an anchorage in the case of post-tensioned concrete. In th

Determine the coefficient of compressibility, A saturated clay layer 4 m th...

A saturated clay layer 4 m thick is located 6 m below GL. The void ratio of the clay is 1.0. When a raft foundation is located at 2 m below GL, the stresses at the top and bottom o

Determine the density index in the natural state, A soil sample with a grai...

A soil sample with a grain specific gravity of 2.67 was filled in a 1000 ml container in the loosest possible state and the dry weight of the sample was found to be 14.75 N. It was

Can u give me a sample assignment, im newer to the courses so i would like ...

im newer to the courses so i would like to know about the assignment types. in this case can u please show me a sample assignment?

Building Technology, which IS code give details about Strength of Brick?

which IS code give details about Strength of Brick?

Borrow pits - embankment construction, Borrow Pits Borrow pits are th...

Borrow Pits Borrow pits are the locations from where the embankment soil is obtained. The following guidelines govern the location of borrow pits : (a) They should be pref

Use of primers in joint sealant, Q. Use of primers in joint sealant? Mo...

Q. Use of primers in joint sealant? Most of the joint sealants applied in concrete joints are adhesive and recommended joint width/depth of joint sealant is from 2:1 to 1:1 as

Show the earth pressure on abutment, Q. Show the Earth pressure on abutment...

Q. Show the Earth pressure on abutment? The magnitude of earth pressure coefficient in calculating the earth pressure on bridge abutment reliesconsiderably on the degree of res

What is the cost of phoenix activity, Q. What is the cost of phoenix activi...

Q. What is the cost of phoenix activity? Phoenix activity has a range of impacts on the Australian economy. Employees lose entitlements when phoenix activity has occurred and w

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