sludge thickening - the increase in solids concentration of sludge in a sedimentation or digestion tank
  • Zagęszczanie osadu



sludge treatment - the processing of wastewater sludges to render them innocuous
  • Przeróbka osadu



sludge utilization - the use of wastewater sludges as soil builders and fertilizer and mixtures
  • Wykorzystanie osadu



sludge volume index (SVI) - the volume in milliliters occupied by 1 g of activated sludge after settling of the aerated liquid for 30 minutes
  • Objętościowy indeks osadu



smearing - mechanical action on wet soil, resulting in the formation of a thin compacted layer passing low permeability
  • Rozsmarowywanie



smoke - gas-borne solids resulting usually from incomplete combustion or chemical reaction
  • Dym



smoke shade - the measurement of the darkness of a plume of smoke by means of a shaded card such as the Ringelmann Charts in which the observer finds the shade which provides the closet match to the plume
  • Odcień dymu



social development - an increase in social welfare
  • Rozwój społeczny



soil - the medium in which plants live and grow and from which, t...