Skip to main content


Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Biosolids with green waste material composting has recently gained significance as an essential beneficial reuse strategy, especially in southern California. This is due to a convergence of several factors, including new road impact fees in land application host counties, new Class A requirements for land application, new setbacks and prohibitions on acreage that has been used for land application, and a desire for more local solutions among biosolids managers. This paper cites examples from projects (in southern California and elsewhere) that demonstrate the impact of these changes on biosolids composting strategies. The southern California market has changed in a number of ways recently. Namely, all conditions mentioned above have converged on this single geographic area. Consequently the cost of trucking and land application has risen from 20 to 30 per wet ton to 35 to 50 per wet ton. This rise in unit costs, together with the uncertainty of future restrictions and regulations has brought composting forward as an economically feasible alternative for biosolids disposal.

As managers have looked to composting, they are faced with new challenges. These include, effectively controlling odors during composting, producing a quality product, and developing sustainable and cost effective compost marketing strategy. Southern California also has some unique complications in addition to these issues. Specifically, some proposed air quality regulations would require enclosed composting with emission control devices, as well as enclosed curing and product storage.

The dynamics of odor control, product quality, and controlling cost, are the three most significant challenges facing the future of biosolids composting. They must all be executed successfully, and they are inter-related. The industry has some ambitious plans that must balance the three to be sustainable over the long term. The alternatives to composting appear to be exportation to remote land application, thermal technologies to create Class A biosolids for less remote land application, and new digestion technologies to increase the solids destruction while minimizing biosolids production. At this point in time, composting appears to be one of the most attractive alternatives. However, due to the number and size of facilities now being planned compost markets must be viewed as a dynamic situation.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 2002-01-01

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
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