Beneficial Reuse of Fly Ash as a Replacement for Lime in the Alkaline Stabilization of Biosolids for “Class A” Exceptional Quality Sludge in Wisconsin

$17.50 plus tax (Refund Policy)

Buy Article:

Abstract:

An existing biosolids lime stabilization process at the City of Kiel, Wisconsin has historically used lime as the alkaline material at a rate of about 318 tonnes per year (350 tons per year) and a cost of about 34,000 per year. The desire to optimize the operation of the stabilization process led Kiel to pursue the idea of substituting fly ash as the alkaline material in the process. Fly ash from a coal-burning electric generating plant about 45 kilometers (28 miles) away was found to be available free of cost to the City. By way of lab, bench and full-scale testing, fly ash was found to be effective in biosolids stabilization and in maintaining “Class A” biosolids status. The predicted annual savings to switch from use of lime to fly ash in the stabilization process was estimated to be 50,000 to 52,000 per year, while increasing the final biosolids volume for disposal by about 10%.

Keywords: Biosolids; Class A; beneficial reuse; fly ash; lime stabilization

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864711802713487

Publication date: January 1, 2011

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • ingentaconnect is not responsible for the content or availability of external websites

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more