Can I calculate accurate BOD of sample water using DO values of 0 Day and 3rd / 5th day?

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Please explain how the plastic input value should be considered from the true stress-strain curve for the bilinear elastoplastic material model ?

I am working on Abaqus/Explicit(Quasistatic ) for the deformation of the auxetic structure model. Please explain how the plastic input value should be considered from the true stress-strain curve...

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How to increase citation in Research Gate?

How to enhanced h-index in Research Gate?

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How to do wavelet transform of EXAFS data?

I want to do wavelet transform of some compounds for their comparative study? Kindly help me in this regard and provide with proper procedure.

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Following click reaction in cell lysates, protein is immobile and remains at the top of the gel in SDS-PAGE?

I am using CuBr/THPTA for a click reaction in total cell lysates. I am facing issues with my protein sample in non-reducing SDS-PAGE where it's not migrating properly and most of it remains at the...

29 July 2024 950 4 View

How to use energy flexibility in inventory modeling?

29 July 2024 2,192 5 View

I want to get updates regarding international law, international trade law, international institutions and human rights etc?

Please send me updates regarding the above-mentioned areas in the question mark?

28 July 2024 5,197 3 View

What is the principle/mechanism behind aging of carbon (graphite) containing refractory mix for isostatically pressed refractories?

The resin bonded carbon containing refractories are aged before use. How time of aging is determined? And mechanism behind aging.

23 July 2024 3,205 0 View

How to remove cell debris after tissue dissociation?

I'm facing issues with the tumor dissociation protocol for GBM. I use collagenase/dispase with DNase to dissociate my tumor sample. However, even after incubating it for 60mins, I do not get a...

22 July 2024 412 3 View

What methods can be used to minimize environmental variability in breeding trial ?

In breeding trials, environmental variability can significantly affect the results, making it challenging to accurately evaluate the performance of different lines and hybrids.

22 July 2024 3,961 4 View

Is profit margin a good variable to measure the market power of a company?

I have read papers where markup has been taken to measure market power. However, if markup data is unavailable, is it okay to continue with profit margin, as when a company has market power, it...

22 July 2024 707 1 View

Why Do TDS and EC Increase with Larger Wastewater Volumes, While BOD and COD Decrease?

I have carried out MFC experiments on three different volumes, 50, 500 and 1000 mL of wastewater. Results after MFC treatment shows that TDS and EC are more in larger volumes of water i.e. TDS and...

09 August 2024 9,621 0 View

Is measurement of oxygen uptake rate dependent on the DO concentration in the sample?

One problem w the BOD bottle type of OUR measurement is that it can only be used in a system that is not DO limited (typically assumed about 2 mg/l or more). If the system is running at low DO and...

01 July 2024 1,282 2 View

BOD5 of a wastewater sample is 470 mg/ L at 20 oC. Given that the BOD rate constant is 0.25/ day at 20 oC, calculate the BOD5 at 30 oC. ?

BOD5 of a wastewater sample is 470 mg/ L at 20 oC. Given that the BOD rate constant is 0.25/ day at 20 oC, calculate the BOD5 at 30 oC. In a BOD test at the MUST EQTEcoL, the initial DO = 7.5 mg/...

04 May 2024 6,414 0 View

What is the relationship between DOC loading and BOD in an aquatic ecosystem?

DOC stands for Dissolved Organic Carbon and BOD stands for Biological Oxygen Demand.

18 December 2023 6,196 3 View

How to measure COD;BOD; BOD5 in wastewater? recommendations ?

COD ; BOD ; BOD5

09 December 2023 9,887 6 View

How can BOD value higher than COD ?

Maybe this questions already answered in others forum. But I would like to know How is it possible that BOD value higher than COD? For COD we used dichromate reagent, and for BOD measurement we...

27 November 2023 6,897 2 View

How to prepare synthetic livestock or dairy wastewater?

Synthetic wastawater: ammonium nitrogen, COD and BOD

07 October 2023 6,475 2 View

BOD titration. We add the manganese sulfate, the sodium iodide azide and concentrated sulfuric acid, but the solution goes colorless. Why?

We doing this as a high school project of BOD on pond water and are following a video method (https://www.youtube.com/watch?v=QZXlIbeGWA0) we found on the internet and we get a pale brown ppt...

27 September 2023 8,477 1 View

What could be reason for white precipitate formation on addition of MnSo4 and Azide after 5 day incubation of sewage water?

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06 August 2023 7,334 2 View

Are there problems in biological ammonia removal for secondary effluent wastewater?

After had been removed BOD and TSS, the amonia removal is required biologically. Are there problems to growing nitrifying bacteria for nitrification and difficult to settle it in sedimentation tank?

26 July 2023 2,362 4 View

Amila Abeynayaka

Yes. Please see this link. First pic is simplified one.

https://ncalculators.com/environmental/bod-exertion-calculator.htm

Virendra Kumar Saxena

Please refer: Archive.epa.gov

Good on line material also available.

Pooja Singh

Thank you all. These were helpful. Thanks.

Muhammad Shoukat Hussain

Amila Abeynayaka is correct

Yes you can calculate by well established formulas. Available in literature.