S

secondary packing - additional packing around sales packing to serve, in the main, advertising purposes, e.g. a plastic- or cellophane-wrapped shirt ( sales packing ) displayed and sold in a cardboard box
• Opakowanie dodatkowe

secondary sludge - sludge from secondary sedimentation tanks ( return activated sludge or humus sludge)
• Osad wtórny

secure landfill - a site chosen and prepared so as to ensure very high retention rates of wastes deposited there
• Składowisko zabezpieczone

sedimentation - separation of particles, sediment, from a liquid or a gas by means of gravitational force
• Sedymentacja

separation - the systematic division of solid waste into designated categories
• Segregowanie; Rozdzielanie; Oddzielanie

separator - a device for separating different materials
• Separator

septic sludge - sludge from septic tank or partially digested sludge from an Imhoff tank or sludge digestion tank
• Osad z dołu gnilnego, szamba, osadnika Imhoffa lub z komory fermentacyjnej

septic tank - a tank, usually underground, for the reception of sewage, the liquid being lost mainly by seepage into the grounds
• Dół gnilny; Szambo

settlement - the amount by which a landfill surface sinks below its original level due to compactio...