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Record 1 2011-06-10

English

Subject field(s)
  • Sewers and Drainage
CONT

The extraneous water which enters a sanitary sewer system utilizes the design capacity and increases the cost of wastewater collection and treatment facilities. The flows are generally attributed to infiltration and inflow. Infiltration is the groundwater which leaks into the sewer system generally through deteriorated and /or defective pipes, joints, connections, and manholes. ... Inflow is the stormwater which directly enters the sewer system after rainfall from such sources as flooded manhole covers, yard and roof drain connections and cross-connections with a storm sewer. Generally, inflow causes sudden increases in wastewater flow rate.

Key term(s)
  • sewage seepage
  • wastewater leakage

French

Domaine(s)
  • Égouts et drainage
DEF

Ensemble des eaux affectant le fonctionnement des réseaux et des installations en provoquant un mauvais rendement épuratoire de la station d'épuration et comprenant : les eaux claires parasites, les effluents industriels, les rejets d'eaux polluées dans le milieu naturel.

CONT

D'une manière plus générale, la maîtrise des eaux parasitaires et le traitement des eaux usées constituent deux axes prioritaires du projet de revalorisation des rivières du bassin franco-genevois.

OBS

Équivalent et définition tirés de la version provisoire du 2e fascicule du Vocabulaire des technologies de l'eau de l'OLF.

OBS

Terme rarement utilisé au singulier.

Key term(s)
  • eau parasitaire

Spanish

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