VTA underground tank

For effective odour control

VTA underground tank

Our VTA underground tank offers the option to store and dose VTA system products for odour control below ground – the main area of application for the tank is in pumping stations in the municipal sector.

The corrugated profile of the outer wall of the double-walled storage tank is particularly resistant and able to withstand compressive stresses from the ground earth.

Positioning the technical equipment in the manhole pit means that it is easily accessible at all times.

The products are dosed using state-of-the-art membrane dosing pumps, while the interstitial space is monitored using a leakage sensor. 

There are two filling alternatives – either directly through the service opening or through a separately installed filling line.

Various options are available for equipping the plant – for instance, continuous level measurement and/or overfill protection.

VTA odour control – child sitting by a river in the countryside

Underground tank

The VTA underground tank provides space for VTA system products designed to neutralise foul odours. VTA Calcoferrit can be conveniently stored and dosed for example.


The challenge

Odour from sewers

When holding times are long and water levels are low, microorganisms produce more hydrogen sulphide. The characteristic smell of rotten eggs emerges

Our solution

VTA underground tank with integrated dosing station

System products for odour control such as VTA Calcoferrit® are stored in underground tanks and introduced into sewers in situ.

The result

Ideal for odour control in combination with VTA Calcoferrit®

  • Economical dosing and
  • safe storage underground and close to its place of use.

Possible combination


The question of how odour-neutralising products are best stored and how they can be dosed arises in the day-to-day use of odour control agents in pumping stations.

Between 1 and 3 m3  of system products can be stored and dosed using the VTA underground tank.

The underground tank is extremely resistant due to its corrugated profile design.

It can reliably withstand compressive stresses from the ground earth.

For safety reasons, a leakage sensor for monitoring is housed between the outer shell and the inner tank.

Data and facts


  • Container material: Polypropylene
  • Container design: cylindrical tank with flat bottom and flat roof
  • Pan design: Drip pan with corrugated profile and manhole pit with cover
  • Volume: 1 – 3 m³
  • Diameter: max. 1,353 mm



  • Membrane dosing pump: Grundfos DDA, 0-200 l/h (controllable, with display)
  • Leakage sensor: BAMO IER, Maximat LW CX
  • Fill level sensor (OPTION): Endress + Hauser, Micropilot FMR 10
  • Overfill protection (OPTION): BAMO IER, Maximat CX



  • Service opening: DN 300, with clamping ring
  • Ventilation: PP pipe, diameter 75
  • Power cable: HT joint, DN 50
  • Dosing line: HT joint, DN 50
  • Measuring instruments: Connections as required
  • Cover plate: DN 600, not suitable for exposure to vehicle traffic, impermeable to surface water, non-submersible. Versions that provide a full seal, are suitable for exposure to vehicle traffic and can be locked are optionally available



  • E-installation: via empty pipe, directly on the respective unit
  • Dosing line: via empty pipe, directly on the pump. Empty pipe design (HT joint interface) with PVC hose
  • Vent pipe: extension of vent pipe as required
  • Filling: via service opening or via filling line (OPTION)


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