Sludge Characterization

Sludge characterization

Nutrient Content

  • ~ 45% Carbon
  • ~ 1.5% to 3.0% Nitrogen
  • ~ 0.3% to 0.5% Phosphorus
  • Nutrients are released slowly as sludge breaks down

Organic Content

  • ~ about 90% organic matter
  • high water holding capacity
  • improves soil structure and tilth

Trace Element Content

  • contain minimal amounts of trace elements such as Cd and Pb
  • overall metal levels generally lower than levels found in agricultural and forest soils