Alum or iron containing water treatment residuals can be used to bind phosphorus which can be advantageous in mitigating run-off from soil with a high phosphorus concentration.
Developers of Biosolids Standards Meeting in Ontario

Biosolids practitioners from around the world will be gathering in Burlington, Ontario in September for a meeting of the International Standards Organization’s (ISO) Technical Committee on sludge recovery, recycling, treatment and disposal (TC 275).
ISO is the world's largest developer of voluntary international standards. Experts from around the world form a technical committee to prepare draft standards which, when agreed to by consensus of ISO members, become ISO standards. Canada is one of 16 participating countries working together to develop standards for sludge recovery, recycling, treatment and disposal.
To learn more about ISO and the work of TC 275 visit ISO’s website at:
http://www.iso.org/iso/home/standards_development/list_of_iso_technical_committees/iso_technical_committee.htm?commid=4493530
International Sludge/Biosolids Workshop
In concert with the ISO TC 275 meeting, the Canadian Mirror Committee (Canada’s representatives on TC 275) is hosting an international biosolids workshop on Monday, September 8, 2014 at the Canadian Centre for Inland Waters in Burlington, Ontario.
The workshop features speakers from Canada, the United States, Israel, France, Argentina, Japan and the United Kingdom who will be presenting on the topics of:
- regulatory programs and activities;
- characterization and treatment; and,
- quality.
For more information and to register visit: http://www.cwwa.ca/2014ISO_Biosolids_e.asp
Photo caption: Dewatered biosolids resulting from different treatment processes - anaerobic digestion (top) and lime stabilization (bottom).