$17.50 plus tax (Refund Policy)

Buy Article:


High temperatures, sometimes combined with alkaline pH, have traditionally been required to destroy pathogens effectively, i.e. achieve standards associated with PFRP, a process to further reduce pathogens in sewage sludge (biosolids). Previous research has indicated that vermicomposting has a potential ability to destroy pathogens. Now vermicomposting has been shown to effectively destroy pathogens in biosolids at mesophilic temperatures. Vermiculture is the process by which organic material is fed to earthworms in a controlled environment with the purpose of producing vermicast, and in some cases, more worms.

In April 1998, a vermiculture facility to process biosolids was opened in Redland, Queensland, Australia, near the city of Brisbane. The facility has processed over 50 000 tonnes of biosolids and green wastes to a consistent Grade A (New South Wales Environmental Protection Agency) Stabilisation. There have been no odour complaints at the facility. Dewatered biosolids are blended with shredded green waste and applied to open air, elevated vermiculture beds. The worms, principally Eisenia foetida, process the material in the bed for 60 days before it is harvested. The design and operation of the facility enables the vermicast to be harvested with few worms or capsules in the product.

Biosolids in general contain a range of bacterial, viral and parasitic organisms. For general distribution and use in home gardens, these pathogenic organisms must be destroyed. Vermicast sampled and tested according to a stringent testing regime prior to distribution confirmed that all of the product contained < 1000 cfu/g fecal coliform, < 100 cfu/g E. coli, salmonella not detectable, enteric viruses < 1 pfu/g, and helminth ova (Ascaris and Tichuris) < 1 ova/g.

Document Type: Research Article


Publication date: January 1, 2002

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 These proceedings are not peer reviewed.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



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
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