1. treated sewage sludge that meets regulatory standards and can be safely used as fertilizer or soil amendment
Usage: technical; environmental science

Examples

• The wastewater treatment plant produces biosolids that are used to fertilize agricultural fields.
• Farmers can apply biosolids to improve soil quality and crop yields.
• The city’s biosolids program helps recycle nutrients from wastewater.
• Strict regulations govern the production and use of biosolids in agriculture.
• The biosolids were tested for heavy metals before being approved for land application.
• Many municipalities convert sewage sludge into valuable biosolids through treatment processes.