Oxygen Sag Curve & Streeter-Phelps Equation

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Oxygen Sag Curve & Streeter-Phelps Equation | Waste Water Engineering

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7 жыл бұрын

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This video covers the Oxygen Sag Analysis to find out the deficit in Dissolved Oxygen at any time t from the introduction of waste water into the stream and how oxygen sag curve is formed using deoxygenation and reoxygenation curves. It also covers the derivation of Streeter-Phelps equation and self purification constant.
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Пікірлер: 36

@archanaiyer5714 2 жыл бұрын

@7:14- Few corrections should be done in the video writeup.. Rate of reoxygenation increases when oxygen from atmosphere is supplied into the stream(i.e. reaeration occurs). This will definitely help to increase the oxygen content in the stream, which means that the oxygen deficit should decrease with increase in rate of reoxygenation.

@vanshruhela3253 4 жыл бұрын

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@mak5386 5 жыл бұрын

I never thought i d find help for this !! I cant thank u enough!!

@APSEDUVERSE 5 жыл бұрын

Welcome Marzooq, have you checked our site learn.apseduverse.com/ ? Video lectures covering entire syllabus with study material, test series and most importantly, doubt support! Starting from Rs.1399/-

@abidkhan-fh6oj 4 жыл бұрын

Bhai mujhe you tube civil ke liye aap se achha channel ni mila thanks alot

@arunendramishra4189 6 жыл бұрын

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@APSEDUVERSE 6 жыл бұрын

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@sangaravenger2338 4 жыл бұрын

excellent teaching ..Thnku APSed.

@deepshikhadutta5671 2 жыл бұрын

thank you so much. very good explanation. i am not from maths background even i was able to understand it.

@abhishekmohite1182 5 жыл бұрын

I usually dont comment anywhere but it was irresistible this time..Xcellent man..you made it damn simple..thanx a tonne

@APSEDUVERSE 5 жыл бұрын

Welcome Abhishek! Hope you have checked our website where we offer more courses with doubt support : learn.apseduverse.com

@tamizhazhagan-jaishreekris2199 4 жыл бұрын

Brilliant my bro 👌

@artichoubey6083 4 жыл бұрын

Superb, defined each and every step clearly. Sir u r brilliant, hat's off to u sir

@APSEDUVERSE 4 жыл бұрын

Happy to hear that Arti. Keep watching this space for more videos and feel free to visit our website apsed.in for exclusive courses.

@filmysongs96 6 жыл бұрын

nice explanation sir..

@rhuuu199x 3 жыл бұрын

Hello sir, we are student and we are having trouble on the flow rate and dissolved oxygen. is there a way that the two can corelate, like to know the time that a flow rate can change a a dissolved oxygen from 3mg/l to 5mg/l

@geli6482 5 жыл бұрын

Good inside out explanation

@APSEDUVERSE 5 жыл бұрын

Thank you! Hope you have checked our website too :)

@shubhamnautiyal1619 6 жыл бұрын

Dear sir..thanks for the nuce lecture.sir one more thing coming in my mind dat when the dissolved oxygen will be maximum in streams night or noon??plz do reply sir

@karthikeyanm1601 6 жыл бұрын

Shubham Nautiyal At day time because of sunlight, algae will undergo photosynthesis thus DO will be more at day. During night time algae will consume oxygen so it will be comparatively less.

@amitkumarsingh2885 7 жыл бұрын

sir the more is the oxygen deficit more is the rate of reoxygenation .then why negative sign?sir once u said rate of reoxygenation increases withnoxygen deficit and again u said it decrases with increase in reoxygenation

@APSEDUVERSE 7 жыл бұрын

Because oxygen deficit will decrease when rate of reoxygenation is more. Rate of oxygenation is more when the deficit is more but if rate of oxygenation increases then deficit will decrease. And when the deficit will decrease then rate of oxygenation will also decrease. So the negative Sign indicates that when rate of oxygenation is more then deficit decreases.

@atulsinghal3920 5 жыл бұрын

@@APSEDUVERSE ni aaya ye bala poit samjh me confusing h ek point me bol rahe ho ki propotional h next line me bol rahe ho inverse propotional h ,what is happening?

@spurthichadharam9144 3 жыл бұрын

Also critical or maximum oxygen deficit is inverse of DR + ROR / log ( ROR/ DR ) 1 / 1 + Def ini ( ROR LNGTH ) / ROR + DR))

@pratikshajha8725 3 жыл бұрын

There is a mistake ,rate of reoxygenation if increases then oxygen deficit will fall down and it will be Kd Lt not negative sign.

@Niv51 4 жыл бұрын

at 15:15 is that K subscript r or K subscript R ??!

@norm1286 4 жыл бұрын

At 4:55 instead of -kd*t it should be kd*t

@PankajSharma-lh5yk 7 жыл бұрын

How deficit is increasing and decreasing?

@APSEDUVERSE 7 жыл бұрын

At the moment waste water is discharged in river it has maximum oxygen demand and deficit less. Now the organic matter starts to get stabilised and dissolved oxygen goes on decreasing. Along with this deoxygenation reareation also takes place but the rate of reoxygenation is lower than rate of deoxygenation. At the point of Maximum deficit both the rates are equal. And after this point rate of reoxygenation is more and deficit goes on decreasing. Rate of deoxygenation decreases with time because it is proportional to the organic matter present and with time amount of organic matter also decreases. Rate of reoxygenation increases with time because it is depends upon the oxygen deficit. The more is the oxygen deficit more will be rate of reoxygenation.

@spurthichadharam9144 3 жыл бұрын

Oxygen deficit is inverse of saturation D.O gov(+) Actual D.O

@vishwapadshetty 2 жыл бұрын

Bro handwriting 🤷🏻‍♂️ !

@avy948 3 жыл бұрын

@lensontaki3213 5 жыл бұрын

Firstly u state that Rate of reoxynegation increases as D.O deficit increases and in the next statement u say that deficit decreases if rate of reoxygenation increases!!!!..sir, u are contradicting ur own statement. Please do explain us which statement of urs is correct. Thankyou.

@trik3002 5 жыл бұрын

Oxy Deficit do not increases in curve. It is Max in the beginning and will keep on decreasing after that and reoxy always increases and is min at the beginning when deficit is Max. At the beginning Deficit is Max. Reoxy is min RATE of reoxy is Max At the end Deficit will be min. Reoxy will be Max. RATE of reoxy will be min.