Completed Project

HUBER Belt Dryers for Sewage Sludge in Innsbruck, Austria

With a focus on „maximum energy efficiency“ HUBER SE realised a Belt Dryer BT at the Innsbruck Sewage Treatment Plant within a record time of seven months.

The sewage sludge drying in the capitol city of Tyrol allows two-zone drying on different temperature levels. An innovative heat recovery concept of the belt dryer allows more than 400 kWth can be fed to a district heating network.

With its strategy “from sewage works to power plant”, the Innsbruck wastewater treatment plant sustainably produces energy and intelligently integrates it into its existing system. The aim is to further increase the efficiency of the complete sewage treatment works and make it one of the most modern plants in Europe.

Capacity:21.176 t/a
Dryer:HUBER Belt Dryer BT 16
Drying efficiency:from 22% DR to 90% DR
Heat sources:
 
medium temperature source: biogas block heat and power plant with 90 °C
high temperature source: biogas block heat and power plant with 140 °C
In operation: since October 2017

 

Capacity
  • Throughput: 21.176 t/a sewage sludge
Project Progress
0%
20172017
BeginCompletion
Belt Dryer BT 16
Condensation stage
Sludge feed
HUBER Belt Dryer BT 16 with condensation stage, two-temperature zone dryer with 90°C and 140 °C supply temperature

HUBER Belt Dryer BT 16 with condensation stage, two-temperature zone dryer with 90°C and 140 °C supply temperature

Condensation stage with heat extraction for the on-site heating system and external heat supply

Condensation stage with heat extraction for the on-site heating system and external heat supply

HUBER Pelletierer zur gleichmäßigen Schlammaufgabe, mit Rollladen abgedeckt zur Abluftreduzierung

HUBER pelletiser for a uniform sludge feed, covered by a roller blind for exhaust air reduction

Statistics

Thermal energy extraction

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Capacity
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Water evaporation
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Dryer length

Detailed case study

IKB (Innsbrucker Kommunalbetriebe AG) invests in a HUBER BT 16 belt dryer. With the strategy "From sewage plant to power plant", IKB's wastewater treatment plant (WWTP) generates energy sustainably and integrates it intelligently into its existing system. The aim is to further increase the efficiency of the entire wastewater treatment plant and thus become one of the most advanced wastewater treatment plants in Europe.

Read full article at huber.de:
Energy-efficient sewage sludge drying at Innsbruck with HUBER Belt Dryer BT

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