Talk:Sewage sludge
This article was the subject of a Wiki Education Foundation-supported course assignment, between 5 September 2019 and 10 December 2019. Further details are available on the course page. Student editor(s): Jackie Kerth, Berzzerkerz, Kassy-gregory.
Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 09:01, 17 January 2022 (UTC)
Would the accounting use of the term sludge be relevant here? — Preceding unsigned comment added by 193.95.151.196 (talk) 11:42, 29 January 2007 I think you should include pictures showing class A and B sludge. It will give the readers a better understanding of what those are. There should also be more information under the Classes of Sewage Sludge heading.
Biosolids is term used to fool the public and farmers. The wastewater industry does not want anyone searching for the early history of sludge studies which show there is no current process to kill pathogens. Composting dissicates bacteria until mositure is again present to revive them. Salmonella and E. coli are known to survive on pasture land for over 70 weeks. While chemical may not have a harmful effect on animals, they may have a harmful effect on the first and second generations. The scientific studies did not consider infection of animals to be a problem. Spreading Sewage Sludge on U.S. Fields, Hidden Cause of Food Safety Problemshttp://hartkeisonline.com/2009/08/21/spreading-sewage-sludge-on-us-fields-hidden-cause-of-food-safety-problems/ Jim Bynum (talk) 18:48, 22 August 2009 (UTC)
Biosolids are the end product from the treatment of wastewater using the activated sludge process. That is sludges that meet criteria set under EPA guidelines (CR 503 in the U.S.A) relating to pathogen content and the presence of volatile solids. The activated sludge process(Ardern and Lockett 1914), that creates WAS for secondary treatment was never designed for pathogen elimination - only rapid reduction in the BOD of domestic wastewater. Yet anyone can witness the enourmous expense most wastewater treatment authorities will deliver in the never ending goal to alleviate public concerns regarding pathogen levels in biosolids. There are many types of sludge. There is only one type of biosolid. There are thousands of articles not just by scientists but primarily independent engineers regarding ever improving methodologies for treating secondary sludges that are often trialled and implemented to meet the criteria to be termed 'Biosolids' in a faster and less expensive manner. Consult the journals. —Preceding unsigned comment added by 149.144.9.73 (talk) 04:20, 15 July 2010 (UTC)
This article is a one-sided affair with virtually no sourcing and an absurd, bolded screamer to go to a one-sided website for info. Compare to biosolids. Merge or cleanup? Mdbrownmsw 18:47, 9 February 2007 (UTC)