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This article is intended as a method of reducing the sewage treatment article (presently at 73K) to a more manageable size. The secondary treatment summary and main article link will remain in the sewage treatment article with a bulleted list of secondary treatment technologies having separate individual articles. This article will expand the description of secondary treatment with comparative descriptions of the most widely used secondary treatment methods. Thewellman ( talk) 20:46, 3 January 2015 (UTC)
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I have just modified 2 external links on Secondary treatment. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
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I have restored the introductory paragraph deleted by User:Jabowery, since that change may introduce additional confusion. While some may perceive secondary treatment as the second phase of what has become a widely used sequence of wastewater treatment, others may perceive secondary treatment as any wastewater treatment producing the effluent quality associated with that traditional wastewater treatment sequence. I suggest talk page discussion to formulate introductory language clarifying this duality. Thewellman ( talk) 13:54, 7 June 2019 (UTC)
I have started to replace those paragraphs about content in sub-articles with excerpts from those sub-articles. I usually first move the content to the sub-article, merge it in, remove duplication and then replace the text with an excerpt from the sub-article. This way, we don't have to improve, update and maintain the some topic in several articles in future but only in one. I do wonder whether it's not sufficient to have an excerpt about activated sludge processes but not have content about sub-variants, i.e. SBRs and package plants for example. EMsmile ( talk) 11:59, 25 August 2021 (UTC)
We ought to add some information about anaerobic treatment processes to this article, which can also be a type of secondary treatment. The available sub-articles are not yet great but this can be a starting point: Anaerobic digester types. EMsmile ( talk) 12:23, 25 August 2021 (UTC)
Hi
Thewellman I don't agree with your edit summary for
this change where you wrote "restore information lost in previous edits". That information was not "lost" but I removed it for a reason which I explained in each of my edit summaries. Let's not enter in an edit war but discuss here on the talk page before you revert a change that I had made with justification in my edit summaries (please). Here is what I had written there: "updated definition on secondary treatment using Metcalf and Eddy definition rather than some older EPA definitions that seemed to be based on BOD removal." also "this is too much detail here in a section on "definitions". It is US centric. similar content is available at sewage treatment, so no need to have it here as well. The definitions section should be small and concise.". This statement is not correct as a general statement, it would have to be qualified Primary treatment settling removes about half of the solids and a third of the BOD from raw sewage.
, like "A publication from the US in 1956 stated that...". You took that statement from Abbott (1956). An equivalent statement is not available in the 4th edition of Metcalf and Eddy so it would be misleading to provide this statement as if it's a universal fact. It might have applied to primary settling tanks in New York at that time. You have no evidence that it is a correct statement for any primary treatment anywhere.
EMsmile (
talk)
01:26, 30 August 2021 (UTC)
The United States Environmental Protection Agency (EPA) defined secondary treatment based on the performance observed at late 20th-century bioreactors treating typical United States municipal sewage. Secondary treated sewage is expected to produce effluent with a monthly average of less than 30 mg/l BOD and less than 30 mg/l suspended solids. Weekly averages may be up to 50 percent higher. A sewage treatment plant providing both primary and secondary treatment is expected to remove at least 85 percent of the BOD and suspended solids from domestic sewage. The EPA regulations describe stabilization ponds as providing treatment equivalent to secondary treatment removing 65 percent of the BOD and suspended solids from incoming sewage and discharging approximately 50 percent higher effluent concentrations than modern bioreactors. The regulations also recognize the difficulty of meeting the specified removal percentages from combined sewers, dilute industrial wastewater, or Infiltration/Inflow.. We provided a current definition (Metcalf and Eddy) earlier on, so we don't need an alternative definition by the EPA which is older (1984) and which gives specific values for BOD and SS. I really don't understand why you insist on using those very old sources from the US when we have more up to date publications nowadays which are also more global in outlook and don't present data from the US as if it applied everywhere in the world. EMsmile ( talk) 01:26, 30 August 2021 (UTC)
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![]() | Text and/or other creative content from this version of Sewage treatment was copied or moved into Secondary treatment with this edit on 12 January 2015. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. |
This is the
talk page for discussing improvements to the
Secondary treatment article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
![]() | This article is rated B-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||
|
This article is intended as a method of reducing the sewage treatment article (presently at 73K) to a more manageable size. The secondary treatment summary and main article link will remain in the sewage treatment article with a bulleted list of secondary treatment technologies having separate individual articles. This article will expand the description of secondary treatment with comparative descriptions of the most widely used secondary treatment methods. Thewellman ( talk) 20:46, 3 January 2015 (UTC)
Hello fellow Wikipedians,
I have just modified 2 external links on Secondary treatment. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 23:38, 14 September 2017 (UTC)
I have restored the introductory paragraph deleted by User:Jabowery, since that change may introduce additional confusion. While some may perceive secondary treatment as the second phase of what has become a widely used sequence of wastewater treatment, others may perceive secondary treatment as any wastewater treatment producing the effluent quality associated with that traditional wastewater treatment sequence. I suggest talk page discussion to formulate introductory language clarifying this duality. Thewellman ( talk) 13:54, 7 June 2019 (UTC)
I have started to replace those paragraphs about content in sub-articles with excerpts from those sub-articles. I usually first move the content to the sub-article, merge it in, remove duplication and then replace the text with an excerpt from the sub-article. This way, we don't have to improve, update and maintain the some topic in several articles in future but only in one. I do wonder whether it's not sufficient to have an excerpt about activated sludge processes but not have content about sub-variants, i.e. SBRs and package plants for example. EMsmile ( talk) 11:59, 25 August 2021 (UTC)
We ought to add some information about anaerobic treatment processes to this article, which can also be a type of secondary treatment. The available sub-articles are not yet great but this can be a starting point: Anaerobic digester types. EMsmile ( talk) 12:23, 25 August 2021 (UTC)
Hi
Thewellman I don't agree with your edit summary for
this change where you wrote "restore information lost in previous edits". That information was not "lost" but I removed it for a reason which I explained in each of my edit summaries. Let's not enter in an edit war but discuss here on the talk page before you revert a change that I had made with justification in my edit summaries (please). Here is what I had written there: "updated definition on secondary treatment using Metcalf and Eddy definition rather than some older EPA definitions that seemed to be based on BOD removal." also "this is too much detail here in a section on "definitions". It is US centric. similar content is available at sewage treatment, so no need to have it here as well. The definitions section should be small and concise.". This statement is not correct as a general statement, it would have to be qualified Primary treatment settling removes about half of the solids and a third of the BOD from raw sewage.
, like "A publication from the US in 1956 stated that...". You took that statement from Abbott (1956). An equivalent statement is not available in the 4th edition of Metcalf and Eddy so it would be misleading to provide this statement as if it's a universal fact. It might have applied to primary settling tanks in New York at that time. You have no evidence that it is a correct statement for any primary treatment anywhere.
EMsmile (
talk)
01:26, 30 August 2021 (UTC)
The United States Environmental Protection Agency (EPA) defined secondary treatment based on the performance observed at late 20th-century bioreactors treating typical United States municipal sewage. Secondary treated sewage is expected to produce effluent with a monthly average of less than 30 mg/l BOD and less than 30 mg/l suspended solids. Weekly averages may be up to 50 percent higher. A sewage treatment plant providing both primary and secondary treatment is expected to remove at least 85 percent of the BOD and suspended solids from domestic sewage. The EPA regulations describe stabilization ponds as providing treatment equivalent to secondary treatment removing 65 percent of the BOD and suspended solids from incoming sewage and discharging approximately 50 percent higher effluent concentrations than modern bioreactors. The regulations also recognize the difficulty of meeting the specified removal percentages from combined sewers, dilute industrial wastewater, or Infiltration/Inflow.. We provided a current definition (Metcalf and Eddy) earlier on, so we don't need an alternative definition by the EPA which is older (1984) and which gives specific values for BOD and SS. I really don't understand why you insist on using those very old sources from the US when we have more up to date publications nowadays which are also more global in outlook and don't present data from the US as if it applied everywhere in the world. EMsmile ( talk) 01:26, 30 August 2021 (UTC)