Skip to main content

Evaluation of Biosolids Utilization Options for the Capital Regional District, Victoria, BC

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

Abstract:

The Capital Regional District (CRD) in Victoria, BC, evaluated biosolids utilization alternatives as part of a planning effort for the Core Area Wastewater Treatment Program (CAWTP). A two-stage analysis was conducted to identify a biosolids management program that met the CRD's goal of cost-effective, environmentally sustainable, and socially responsible wastewater treatment. If managed appropriately, biosolids production and utilization could provide multiple benefits to the utility including reduction of its carbon footprint, revenue from the biosolids product, and additional resource recovery.

Analysis revealed the most beneficial utilization options were those that promoted solids stabilization through anaerobic digestion. Resource recovery was maximized through capture of biogas for sale to the local utility, reuse of heat energy for thermal drying, and production of a Class A biosolids product. Final recommendations indicated a diverse array of biosolids management options that would maximize CRD and provincial goals. Dried fuel product was determined to be particularly attractive, in part, because the carbon tax in British Columbia provided an economic incentive for industry. This market was the ultimate recommendation of the study. In addition, development of a topsoil blend and mine reclamation were recommended to diversify the biosolids program.

Results of this analysis enabled CRD to make an informed decision about methods of production and biosolids utilization to maximize benefits. Regardless of the results of this analysis, the current plan is to produce a dried biosolids product that will be available as fuel for cement kiln or alternative energy production. Land-based biosolids recycling was not allowed in any form, even as a backup measure for the program. Details of the evaluation and further discussion of the decision-making process will be provided.

Keywords: Biosolids utilization; Fertilizer; energy production; soil amendment

Document Type: Research Article

DOI: https://doi.org/10.2175/193864711802862699

Publication date: 2011-01-01

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.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect 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