Hydro Ingenieure - Vision to clear solutions

WWTP GAV Gmoosbach

Tasks definition

In March 1993 the municipalities Wullersdorf and Grabern established the wastewater association Gmoosbach. The primary reason was a provision of proper wastewater disposal. In 1997 municipality Guntersdorf and in 2004 the municipality Nappersdorf-Kammersdorf joined the association.

The task was to provide the inhabitants with a wastewater treatment plant which would comply with all applicable standards.


A full biological WWTP (14.240 P.E.) was designed. The WWTP is located in the municipality Schöngrabern and consists of the below listed parts:

  • Operation building
  • Mechanical pre-treatment
  • Screens
  • Aerated sand trap and grease remover
  • Phosphate precipitation
  • 4-SBR-Reactors
  • Separate sludge stabilisation
  • Blower station
  • Sludge storage tank
  • Septic tanks content disposal point
  • Mechanical pre-treatment via centrifuge
  • Project management
  • Design for applicable permissions
  • Application for financing of the project
  • Detail design
  • Elaboration of tender documentation
  • Tender Evaluation
  • Preparation of Works Contracts
  • Construction supervision
  • Taking-over
  • Elaboration of final acceptance documentation
  • Commissioning
  • Client: Wastewater association Gmoosbach
  • Project period: April 2001 - June 2004
  • Investment volume: € 3.900.000,–
  • Contact person: Andreas Käppl, MSc