John Kimball's "Sewage Treatment"

Read this article to learn how wastes are treated and disposed of. Follow the "Chlorination" and "Eutrophication" links, and study these sections as well.

Click http://web.archive.org/web/20160316191536/http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/S/SewageTreatment.html link to open resource.