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sanitary landfillan advanced landfill with engineering measures to prevent the escape of leachate and collect the landfill gas (10) |
sanitationprevention of human contact with wastes; the provision of facilities and services for the safe disposal of human excreta (1) |
sanitation laddermeasure of progress towards the provision of adequate sanitation facilities for every household (1) |
sanitation marketingan approach to household sanitation promotion that aims to improve sanitation standards by encouraging people’s demand for sanitation products and services (13) |
sanitation platformcast concrete or plastic latrine slab that is safe for children and convenient for adults, and has footrests (5) |
secondary collectioncollection of solid waste from transfer stations for transport to the final disposal site (9) |
secondary treatmentstage in sewage treatment where aerobic micro-organisms break down organic material (6) |
semi-structured interviewan interview with a set of topics and questions for discussion that develops according to responses given (3) |
septic tankunderground, watertight tank in which sewage is collected and partially treated before discharge (5) |
services (sanitation)the entire scheme for providing sanitation (facilities, maintenance, waste treatment, finance) (1) |
settleable solidssolid particles in wastewaters that settle out when the flow rate is reduced (4) |
sewagecombined wastewater from all sources; includes blackwater, greywater and stormwater (1) |
sewerunderground pipes that carry sewage; ditches containing sewage may be described as open sewers (4) |
seweragenetwork or system of sewers (4) |
shared sanitation facilitieslatrine used by more than one family/household (1) |
slow-onset disasterdisaster that unfolds over time as a result of events, such as drought and famine (14) |
Sludge Gulpertype of hand-operated pump for desludging pit latrines (6) |
soakawaypit where liquid effluent, typically from a septic tank, is allowed to soak into the ground |
soil improverproduct such as compost that makes soil more productive and resistant to drought (8) |
solid wasteall the discarded solid wastes arising from human activities (1) |
stakeholderan individual, organisation or group that has an interest in something, e.g. a situation, project, process or activity (11) |
stormwaterrainwater that collects on the ground and runs off into channels, ditches and rivers and may carry pollutants with it (1) |
structured interviewinterview based only on a set of questions drawn up before the start (3) |
subjective (assessment)assessment based on the investigator’s personal experience and views, which will vary between individuals (3) |
sullageanother term for greywater (1) |
suspended solidssolid particles in wastewaters that do not settle out when the liquid is left to stand; in flowing water, this includes solids that are carried in the flow (4) |
sustainabilityconcept describing effective and long-lasting projects and other interventions that have given consideration to economic, social and environmental factors. In ISWM, it is a principle stating that the waste management system must be capable of operating in the long term, mimimising the use of non-renewable resources and not causing pollution problems that will need to be dealt with by future generations (11) |
sustainable drainage systems (SuDS)range of techniques to reduce the speed of flow of surface run-off, encourage its infiltration into the ground, and reduce the risk of flooding (6) |