Definition of sewage sludge in US English:

sewage sludge

noun

  • Semiliquid waste obtained from the processing of municipal sewage, often used as a fertilizer.

    • ‘It is becoming all but impossible to use sewage sludge as fertiliser on farm land.’
    • ‘In Europe, there is a strong understanding of the potential impact of contaminants found in sewage sludge and wastewater.’
    • ‘Only natural fertilizers are used; those made from petroleum or containing sewage sludge aren't allowed.’
    • ‘Proper management of livestock waste and sewage sludge also reduces loss of nutrients from fields.’
    • ‘Today more than half of London's sewage sludge is sold in pellet form as fertilizer for agricultural use.’