Vacuum Sewerage System……


  • Vacuum sewerage systems is method of disposing of sewage in the sophisticated and reliable way.
  • Alternative way of sewage disposal.
  • Wide applications is future.


Vacuum Sewerage Systems

  • Vacuum sewerage system works due to differential air pressure.
  • Working of vacuum sewerage system.
  1. Based on differential air pressure.
  2. Interface valves works pneumatically.


The Component

  • The main elements of vacuum sewerage system are:
  1. Collection chambers Interface Units.
  2. Vacuum lines/Hydro-pneumatic Transport.
  3. Vacuum Station.


Collection Chambers/Interface Units

  • Function of collection chamber and interface units.
  • Addition of air.
  • Working of interface valve.
  • Interface valves are membrane type.
  • Diameter restricted to prevent clogging.
  • Collection chamber at each house.


Vacuum Lines/Hydro-pneumatic Transport

  • Vacuum sewer line work on the elevation profiles i.e. high or low points.
  • Flow situations cannot be described by hydraulic laws.
  • Conveyance take place by means of two phase regime.
  • Sewers are laid in the form of saw-tooth profile.
  • Gradual flow of sewage by “tooth by tooth” mechanism to the vacuum station.
  • Usually HDPE or PVC pipes used.
  • Inspection pipes at every 100m.


Vacuum Station

  • Wastewater and air is driven to a collection tank at the vacuum station.
  • Vacuum generators maintain vacuum in the tank.
  • Only place where energy required.
  • Vacuum pump maintains negative pressure.
  • Vacuum pumps run only for few hours a day.



  • Low investment costs.
  • Saves material cost.
  • Flexibility of piping.
  • No pumping stations required for lifts.
  • No odours, no corrosion of pipes, no danger.
  • No manholes are required.
  • Sedimentation, infiltration does not take place.
  • Absolutely leakage free.
  • Reduced installation time.
  • No disturbance to inhabitants.


Fields of Application

  • Especially difficult situations such as ribbon, peripheral settlement on flat terrain, with high pipe lengths of longer than 4 meters per inhabitant.
  • Can pass through water protection areas and areas with sensitive high ground water table.
  • Feasible solution in adverse gradient, unfavorable soil, missed ground inclinations.
  • Rural areas where buildings are not close to each other as well as in the congested areas.
  • Only solution for refurbishment of sewer systems.



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1 Comment

  1. Murugaiah

    Quavac vacuum system is the pioneer in vacuum based system and they have demonstrated such systems in Indian conditions like places in Goa, Gujarat and Karnataka. They have office in Bangalore and those who are interested to have the knowledge may kindly contact their office in Bangalore at +91-80-69990700

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