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HUBER Longitudinal Grit Trap ROTAMAT® Ro6 Longitudinal Grit Trap Ro6 with grit removal screw

  • Designed in accordance with DWA standards or customised design
  • Available with or without aeration
  • Optional separate grease chamber with automatic grease removal
  • Manufactured entirely in stainless steel

Grit separation from wastewater will prevent operational problems, such as grit sedimentation, increased wear, and blockages.

HUBER Longitudinal Grit Trap ROTAMAT® Ro6, outdoor installation
HUBER Longitudinal Grit Trap ROTAMAT® Ro6, outdoor installation
HUBER Longitudinal Grit Trap ROTAMAT® Ro6, indoor installation
HUBER Longitudinal Grit Trap ROTAMAT® Ro6, indoor installation
Above-ground installation of a HUBER Longitudinal Grit Trap ROTAMAT® Ro6
Above-ground installation of a HUBER Longitudinal Grit Trap ROTAMAT® Ro6
Redundant installation of HUBER Longitudinal Grit Trap ROTAMAT® Ro6, 300 l/s each
Redundant installation of HUBER Longitudinal Grit Trap ROTAMAT® Ro6, 300 l/s each
Small, unaerated HUBER Longitudinal Grit Trap ROTAMAT® Ro6
Small, unaerated HUBER Longitudinal Grit Trap ROTAMAT® Ro6
Aerated HUBER Longitudinal Grit Trap ROTAMAT® Ro6 with rectangular inlet and emergency bypass
Aerated HUBER Longitudinal Grit Trap ROTAMAT® Ro6 with rectangular inlet and emergency bypass
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Design and Function

Grit separation

The grit trap design and dimensioning are fully compliant with DWA recommendations or according to customer requirements. The grit trap is available as an aerated or unaerated unit. The decision on when to use the aerated or unaerated option is for example the specific ratio between the storm and dry weather flow and if any further grit treatment facilities are installed or planned.

Grit removal

The horizontal grit conveyor transports the separated grit particles to the inclined grit removal screw installed within the grit trap. The inclined screw dewaters and discharges the compacted material into a container or a subsequent HUBER Coanda Grit Washer RoSF4 T. Optionally, the material can be pumped to the grit washer.

Grease separation and removal

Separation of fats and grease is only available when used with aerated grit channels. The grease is collected in a separate chamber with the partition between the grit trap chamber and grease chamber consisting of a slotted scum board. The flow generated within the grit trap chamber by the aeration system transports the grease through the slotted scum board into the grease chamber.

Contrary to many competitors’ systems, the HUBER Longitudinal Grit Trap ROTAMAT® Ro6 provides forced transport of the grease separated on the water surface within the grease chamber into the grease collection tank. Forced grease transport is ensured by an integral grease removal paddle that consists of a guided scraper which reliably removes the grease layer from the grease chamber. The grease removal paddle further ensures complete grease removal over the full grit trap length preventing a digestion process that would normally be associated with improper grease removal.

Optional integrated grit washing

In this case the horizontal grit conveyor transports the separated grit fractions directly into a grit washer which is integrated at the Complete Plant outlet. Due to a defined introduction of upwardly directed service water the grit situated within the lower part of the grit washer is fluidised within the flow enabling the lighter organic particles to be separated from the dense grit particles. The separation of the lighter organic particles from the dense grit particles is supported by a rabble rake. After removal of the organic material the clean grit is automatically removed by a classifying screw, statically dewatered and discharged into a container.

The benefits of HUBER Longitudinal Grit Trap ROTAMAT® Ro6

  • Separation efficiency at Qmax: 90 % capture rate of max. grit particle size 0.20 – 0.25 mm (confirmed by the University of Erlangen)
  • Throughput capacity up to 300 l/s (1,080 m3/h)
  • Optional separate grease chamber with automatic grease removal
  • Completely encased unit
  • Installation above ground or below ground
  • Optional integrated grit washing
  • Completely made of stainless steel (including the screws)

Downloads

Customer Information and Documents

More information needed?

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Feel free to contact us

FAQ

Frequently Asked Questions

In addition to the desired sedimentation of grit, undesired separation of organic matter also occurs in the grit chamber. In order to prevent this separation of organic matter as far as possible, grit channels are designed with aeration to prevent the sedimentation of organic matter.

However, even aerated grit traps are unable to ensure reliable separation of grit from organics. This can only be achieved and guaranteed by a well performing grit washing plant, such as the HUBER Coanda Grit Washer RoSF4.

Case Studies

HUBER Solutions in Operation

Anaerobic Digestion: Twin HUBER grit traps and grit washers
2021-08-19 Dublin, Ireland

Anaerobic Digestion Pre-treatment – A Grit Removal Case Study

A new Anaerobic Digestion plant outside Dublin has been provided with high efficiency HUBER grit removal and grit...

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img-casestudy-20-10-geflugelschlachthof-03
2020-10-28 Ampfing, Germany

HUBER applications in poultry slaughterhouse Süddeutsche Truthahn AG

A turkey slaughterhouse produces around 800 m³ of waste water every day. This is brought together in the production...

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img-casestudy-19-06-biowaste-schwerstoffe-01-ro6bio-rehau
2019-06-27 Rehau, Germany

Heavy-medium separation and washing system installed and commissioned at BEZ Hochfranken

HUBER Longitudinal Grit Trap ROTAMAT® Ro6 Bio and HUBER Grit Washer RoSF G4E increase operating reliability and reduce...

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