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What is Sanitary and Storm Sewage, Dry And Wet Weather Flow

Posted on 17th March 201828th June 2022 By Malay Sautya

Contents

  • 1 Sanitary Sewage
  • 2 Storm Sewage
  • 3 Dry Weather Flow(D.W.F)
  • 4 Wet Weather Flow(W.W.F)
  • 5 Variation In Flow Of Sewage

Sanitary Sewage

Sanitary sewage includes liquid wastes of domestic and industrial places. 

Storm Sewage

Storm sewage includes surface runoff developed during and immediately after the rainfall over the concerned area.

Dry Weather Flow(D.W.F)

The sanitary sewage which flows in dry season is known as dry weather flow.
It consists of two types of sewage:
a) Domestic sewage.
b) Industrial sewage.

The quantity of D.W.F depends upon the factors:
a) Infiltration & ex-filtration.
b) Nature of industries.
c) Population.
d) Rate of water supply.

Wet Weather Flow(W.W.F)

The combined flow of sanitary sewage and stormwater in the rainy season is known as wet weather flow.

Variation In Flow Of Sewage

The flow of sewage is directly related to the flow of water supply. As the water supply varies from hour to hour, day to day, month to month, and season to season. The flow of sewage also varies accordingly. The peak flow should be ascertained by different observations.

Read Also: 

Factors Affecting The Quantity Of Sanitary Sewage 

Determination of Quantity of Sanitary Sewage 

Factors Affecting The Quantity Of Storm Sewage

water Tags:WasteWater

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