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

California Bearing Ratio, What is the California bearing ratio for granular...

What is the California bearing ratio for granular A, Granular B, 19 mmm Crusher Run Limestone, 50 mm Crusher run limestone, HL3 and HL8 Asphalt?

Survey question, Sir morng..i know about WCB AND RB.With diagram..pls help ...

Sir morng..i know about WCB AND RB.With diagram..pls help me sir

Hydraulics, The atmospheric pressure is given 680 mm Hg at a certain mounta...

The atmospheric pressure is given 680 mm Hg at a certain mountain location of elevation 2000 m. air density is 1.007 kg/m3. Find the pressure in kPa.

Heliports and stol ports, Heliports and Stol Ports: Heliports ...

Heliports and Stol Ports: Heliports Heliports are facilities for landing and take-off of helicopters. They consist of : (a) Landing and take-off area, which contai

Determine the preliminary settlement analysis, Preliminary settlement analy...

Preliminary settlement analysis for a building indicated a settlement of 50 mm in 4 years and an  ultimate  settlement  of  250 mm.  The average pressure increment in the clay stra

High strength friction grip bolts and normal bolts, High strength friction ...

High strength friction grip (HSFG) bolts vs. normal bolts HSFG bolts have the following benefits when compared with normal bolts: (i)  Performance of preloaded HSFG bolts u

Theory on the horizontal reactions of portal frames, Determine the horizont...

Determine the horizontal abutment reaction of a rectangular portal frame under increasing central concentrated load

Sewer manhole, minimun difference in level of inlet and oulet pipe level in...

minimun difference in level of inlet and oulet pipe level invert in manhole

Explain basic need of design of shock transmission unit, Explain the Basic ...

Explain the Basic requirement of Design of shock transmission unit? The STU must withstand the specified design load. The stroke of the piston must be bigger than the movement

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