Talk:Biochemical oxygen demand

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Is biological oxygen demand the same as biochemical oxygen demand?

I think the use of BOD to mean Biological Oxygen Demand [as in Elisabeth v. Munch's excellent powerpoint presentation: Characteristics of Urine, Faeces and Grey Water] and Biochemical Oxygen Demand [which is how BOD is defined here] needs tidying up. My understanding is that Biochemical OD is the sum of Biological OD and Chemical OD. Biological OD is due to the action of bacteria whilst Chemical OD is due to the oxidation of chemicals without the involvement of living organisms. AndrewJohnWarren (talk) 09:49, 17 March 2016 (UTC)[reply]

No "Biochemical " is correct and it does not refer to the sum of biological and chemical ODs. Please do the mathematical addition for results from any sample of water to demonstrate the fallacy of that belief. COD typically includes the whole of BOD plus the oxygen demand of materials incapable of biochemical oxidation. Summing them would make no sense. Velella ^{Velella Talk} 09:59, 17 March 2016 (UTC)[reply]

OK, thanks for that. It seems to remain the case that BOD stands for two different things with different values....?AndrewJohnWarren (talk) 11:21, 17 March 2016 (UTC)[reply]

No, it's just two different terms used for the same thing: biological oxygen demand is the same as biochemical oxygen demand. I actually would always call it biological oxygen demand. EvMsmile (talk) 13:30, 17 March 2016 (UTC)[reply]

The term was coined by the Royal Commission on Sewage Disposal in setting out the 30:20 standard. Whilst we may all agree that the word "biological" better conveys the meaning, "biochemical" is the word used in the historical precedent. Regards 121.75.9.206 (talk) 20:31, 17 March 2016 (UTC)[reply]

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Merge of Carbonaceous biochemical oxygen demand here

Carbonaceous biochemical oxygen demand covers much of the same ground as this article albeit from a specific US viewpoint and also largely in the mode of a manual of how to do BOD tests. Wikipedia explicitly is not a manual and all the relevant material is already present in this article . This article also substantially pre-dates the carbonaceous article. This article was started in 2004 and the carbonaceous one in 2010. Velella ^{Velella Talk} 22:32, 29 October 2019 (UTC)[reply]

Merged in December 2019. Velella ^{Velella Talk} 14:36, 19 January 2021 (UTC)[reply]

what is DO production

you need to explain what DO stands for its mentioned many times but not explained — Preceding unsigned comment added by 81.109.61.206 (talk) 14:18, 19 January 2021 (UTC)[reply]

It is Dissolved Oxygen. The abbreviation was explicitly explained in three separate sections of the article but, just in case reading past the intro is difficult, I have added yet one more to the lede. Velella ^{Velella Talk} 14:35, 19 January 2021 (UTC)[reply]

Short description

A short description needs to be short. The guideline at Wikipedia:SDSHORT talks about a target of 40 characters. The current SD tries to define the topic but is being flagged as excessively long at 142 characters. The guidelines at Wikipedia:SDNOTDEF are clear that a definition is not needed, just a statement that allows viewers to distinguish this topic from other topics that seem to have a similar title. The question then, is how to create a simple SD that approaches the 40 character target. After some careful reading of the article, I chose Metric for oxygen dissolved in water which seemed to meet the need – there is no need in a SD to says why the metric exists or how it is used. Please consider what SD would instead serve to distinguish this topic from others while being technically correct and short — GhostInTheMachine ^{talk to me} 20:18, 3 September 2021 (UTC)[reply]

The reverted description would have been appropriate for the different dissolved oxygen test, but this test is a measure of the oxygen needed to remove organics from water. Albert Einstein said: “Everything should be made as simple as possible, but no simpler.” Does the 40-character limit justify substituting O₂ for oxygen and H₂O for water, or is this a case where WP:Iar might apply? 21:25, 3 September 2021 (UTC)

43 is near enough! A tidy short summary is often a real challenge — GhostInTheMachine ^{talk to me} 21:45, 3 September 2021 (UTC)[reply]