Breakpoint chlorination/Disinfection method in drinking water treatment
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- Опубликовано: 1 окт 2024
- It describes the breakpoint chlorination in water treatment using the graph. It lists the disinfection methods. It explains the free residual chlorine, combined chlorine and total residual chlorine. It speaks about chlorine shock in pools. The graph of break point chlorination is explained.
Break point chlorination/Disinfection in Drinking water treatment
You will be able to
enumerate the various disinfection methods
explain combined and free residual chlorine
define the break point chlorination.
Rivers, ponds, dams, reservoirs, flood and storm run-offs
Should be free from odour, colour and taste
Should be free from dissolved objectionable gases
Should be slightly alkaline (pH about 8.0)
TDS should be less than 500ppm.
Should be free from toxic impurities.
Should not be turbid.
Should be free from pathogens such as bacteria, virus, protozoa etc.
Floating matter -paper, cloth, twigs, logs, leaves, fish, plastic waste etc.
Suspended particles -sand, silt etc.
Colloidal particles -fine particles, clay etc.
Microorganisms -bacteria, virus, protozoa etc.
Destroys the pathogens (disease causing microorganisms)
Methods of disinfection
Chlorination - bleaching powder, chloramines or liquid/gas chlorine
Ozone treatment -
Ultraviolet (UV) light - 254 nm UV light damages the RNA and DNA of the microorganisms. Destroys chemical contaminants also.
Breakpoint chlorination : It is a point where all the impurities present in the water such as reducing compounds,organic compounds and ammonia are oxidised by chlorine and the chlorine added further acts as a disinfectant to kill the pathogens.
upto A : chlorine reacts with reducing compounds - no residual chlorine
A to B : chlorine reacts with organic impurities and nitrogen compound like ammonia to form chlororganics and chloramines. (Combined chlorine residuals)
B to C : Partial destruction of chloro-organics and chloramines
C : Breakpoint chlorination - All the reducing substances, organic impurities and ammonia are oxidised and further residual chlorine acts as a disinfectant to destroy the pathogens.
Beyond C: Total residual chlorine (free and combined chlorine) - acts as a disinfectant.
Thank you madam for your valuable lecture!
Most welcome
i was so irritated while reading this breakpoint in book...now Got an idea...thank u mam
Most welcome.
Very clear explanation !!
Thank you for amazing content !!
Glad that you liked it. Most welcome.
Watching from thameswater London
Thank you. Good to hear.
this is what i wanted thnxx Ma'am
thank you.
Hello ma'am! How to disinfect and purify well water where the sewage water was mixed?
There is no short process
Right. It is not easy. It should undergo even waste water treatment.
@@RevathiPurushothaman It's old well, whole colony people used it's water but recently not much use. What can be done?
Very useful and informative. Very good explanation about chlorination and break point chlorination
Thank you.
Thank you madem.the content is good and informative
Glad that you liked it.
Good explanation ma'am... thanks for teaching
Thank you very much.
finally a clear lecture on this topic. thank u mam..
You are most welcome. It's my pleasure.
Ads are distracting.plz reduse
I never introduce or control ads, it is RUclips only.
i've watched so many videos, including this one, and yet not a single one talks about WHY partial destruction happens. I guess it's not important... lol
I was always satisfied with your lecture mam
Thank you very much. It's my pleasure.
Thank you so much ma'am 😊🙏
It's my pleasure
helpful
Thanks
Super mam
Thank you.
Great! Please do one on cooling towers
Sure.
Thank u so much madam 😊
It's my pleasure.
thank you ma'am
My pleasure.
Well explained😍
Thank you.
How is it destroyed
Really helpful maam
Thank you
Can you please tell us about Disinfection Tank required for hospitals?
No idea sir.
Aabaj nhi h
Did not understand.
❤
Thanks
Very well explained
Thank you