Problem Solved: BOD Problem

Problem Solved: BOD Problem - Wastewater Math

Рет қаралды 160,947

12 жыл бұрын

americanwatercollege.org
This question comes from the California Wastewater grade 3 certification exam sample questions that can be found here: www.swrcb.ca.gov/water_issues/...
The problem reads:
A secondary effluent has a total BOD of 45 mg/L. A BOD5 test is run on this same secondary effluent at the same time using a nitrification "inhibitor". Using the data for this test is given below, calculate the nitrogenous BOD (Assume a 300 mL BOD bottle is used to run this test).

Пікірлер: 29

@SharpShootr92 4 ай бұрын

11 years later and you're still helping people. thank you!!

@nocoho1 11 жыл бұрын

I always wondered what the lecturer looked like! Taken 2 courses from American Water College so I am glad to see some videos on KZfaq before my Grade 3 test.

@AmericanWaterCollege 11 жыл бұрын

I'm happy you are experiancing success using all the tools available through American Water College to advance your certification. Keep up the good work. I wish you success on your grade 3 exam. -Joe

@juanfranmar1225 4 жыл бұрын

Muy clara la explicación, me ayudó mucho para operar mi planta de tratamiento, muchos de sus vídeos lo son. Saludos !

@PhotonCherades 9 жыл бұрын

Well done!

@sholaraja 12 жыл бұрын

Thank u very much.ur videos very useful to me.keep adding

@AmericanWaterCollege 12 жыл бұрын

The blank depletion should be 0.2 mg/L or less while the sample bottle depletion should be 2 mg/L or more, with at least 1 mg/L left in the sample bottle. Good catch! We will redo this problem. The answer doesn't change, however I did misspeak when talking about the sample bottle DO depletion.

@suhedaylmaz1627 6 жыл бұрын

American Water College hello i have a question. If we have a 10 day period and BOD values and if instructor ask “estimate rate constant and ultimate BOD using Thomas Method” which equation should we use? Because i try to solve using L_10(1-e^-k.10) but we have two unknown and i dont know what should i do, thank you :))

@mehakakhtar9201 5 жыл бұрын

pump floe rate

@chunhengong6581 9 жыл бұрын

i want to know the chemicals used for the nutrients

@troyrieder5927 9 жыл бұрын

Calcium Chloride, Magnesium Sulfate, Ferric Chloride and Phosphate Buffer are added to the nutrient buffer solution.

@odirilep 10 жыл бұрын

Thanks, the 0.2 mg/l and 2.0 mg/l is well explained. these vedios are very useful. well done.

@sholaraja 12 жыл бұрын

depletion should be 0.2 or 2mg/l?please clarify

@MrJohnAndrewhall 3 жыл бұрын

I always thought (was told) they used a 7 day BOD in America. The 5bdaybwas particular to the UK because that, supposedly, was the max. time it took for any river in the UK to flow from source to sea.

@abasin08 2 жыл бұрын

Yesterday I took my wastewater B exam for the state of Colorado, and saw a BOD problem with sample dilution, how would you go about with sample dilutions with BOD? Thank you.

@MasterCivilEngineering 3 жыл бұрын

Step by step video solutions for civil engineering questions

@TheAhmedbenali 5 жыл бұрын

thank you

@alexanderpanama8861 10 ай бұрын

Did you have refference book

@sholaraja 12 жыл бұрын

in the sample

@Rayaann 7 жыл бұрын

THANKS SOO MUCH YOU REALLY HELPED IN MY MATH AT SCHOOL

@A.Goni_Chemist-1986 8 жыл бұрын

wow good vedio which is very effective

@mitapervin4842 6 жыл бұрын

Bod discussion den

@thyaisrobinson5657 5 ай бұрын

i got 17.5mg/l

@gmwwc 3 жыл бұрын

Build a spreadsheet. This is too tedious to do by hand. Also writing your own spreadsheet with conditional formatting will acquaint you with the formula on a very personal level. or cheat and download one from one of the reagent suppliers.

@A.Goni_Chemist-1986 8 жыл бұрын

wow good vedio which is very effective