May
27
2010
Ministry’s position on biosolids
Author: AlIn response to Mr. McLaughlin’s query about biosolids, here is the background information on land application of sewage biosolids from Steve Burns, District Manager of the Ottawa Office of MOE.
Biosolids
On September 18, 2009, the Ministry of the Environment and the Ministry of Agriculture, Food and Rural Affairs jointly announced new rules and guidelines for applying non-agricultural source materials (NASM) to farmland. The new rules establish consistent standards and requirements across the province which focuses on the quality of the material being land-applied, ensuring it meets strict criteria and is beneficial to the soil. The revised regulations will cover all Ontario farms where non-agricultural source material will be applied.
NASM includes yard waste, fruit and vegetable peels, food processing waste, pulp and paper biosolids and sewage biosolids. Proper spreading of these materials on farmland returns essential nutrients to the soil to help foster new plant growth.
Sewage biosolids are nutrient-rich materials that result from the treatment of municipal wastewater. Each year, Ontario generates approximately 300,000 dry tonnes of municipal sewage biosolids of which approximately 40% is land applied, 40% goes to landfills and 20% is incinerated. Sewage biosolids and other nutrients, such as manure, contain nitrogen, phosphorus and organic matter as well as essential micro-nutrients such as copper, iron, molybdenum and zinc. These are important for plant growth, soil fertility and improving the physical condition of the soil.
Effective January 1, 2011, non-agricultural source materials (NASM) will be managed under the Environmental Protection Act until it arrives at the farm gate where it becomes subject to the General Nutrient Management Regulation under the Nutrient Management Act. 2002. This change establishes consistent environmental standards across the province and clearly defines who is impacted and the requirements they must follow.
Why spread organics on farmland?
Spreading materials like NASM on farmland returns essential nutrients to the soil to help foster new plant growth. Materials that are high in organic matter, for example, allow the soil to breathe and hold more water, which decreases water runoff and soil erosion and increases overall water conservation. Farmers also receive an economic benefit as NASM provides nitrogen, phosphorus and other micro-nutrients typically found in commercial fertilizers that would otherwise have to be purchased. Another important reason for using these materials on farmland is that it keeps them out of landfills, an important consideration in Ontario’s waste diversion efforts. A number of studies have been conducted on the land application of biosolids. No objective evidence has been found to indicate that properly applied and regulated land application of biosolids has adverse health impacts.
Related Links
http://www.ene.gov.on.ca/en/land/biosolids/docs/fs-health-env.pdf
http://www.ene.gov.on.ca/en/land/nasm/docs/Fact%20Sheet%20-%20Hauler%20-%20final.pdf
http://www.ene.gov.on.ca/en/land/nasm/docs/Fact%20Sheet%20-%20Farmer%20-%20final.pdf
http://www.ene.gov.on.ca/en/land/nasm/docs/Fact%20Sheet%20-%20Generator%20-%20final.pdf
http://www.ene.gov.on.ca/en/land/nasm/docs/Fact%20Sheet%20-%20Odour-%20final.pdf
http://www.omafra.gov.on.ca/english/nm/nasm/agusesbio.htm
http://www.omafra.gov.on.ca/english/nm/nasm/sewbiobroch.htm
http://www.omafra.gov.on.ca/english/nm/nasm/info/brochure.htm





