Klärschlammentwässerung in der Gerbereiindustrie mittels Bucherpressen - Optimierung der Filterschlauchreinigung

Translated title of the contribution: Sewage sludge dewatering in the tanning industry by use of Bucher presses - optimisation of the filter hose cleaning

Gertrud Barbara Guttmann

Research output: ThesisMaster's Thesis

Abstract

Boxmark GmbH & Co KG is a southeastern Styrian manufacturer of premium leather with a strong environmental awareness. Therefore the company operates waste water treatment plants at each company site. As a part of the waste water treatment the produced sewage sludge is dewatered for further external utilization. Since 2011 the sludge dewatering is done with so-called Bucher presses which are hydraulic filter presses produced by the Swiss com-pany Bucher Unipektin AG. The test operation of the Bucher presses showed that the chemicals used for the cleaning process were not able to reach high degrees of purification without damaging the filter hoses. When it was cleaned the filter material generally had to be changed after one further pressing batch. Therefore the objective of this thesis was to find cleaning chemicals with a high cleaning power, but without damaging effects on the filter hoses or other components of the Bucher press. The cleaning processes in a Bucher press were simulated with chemical and physical tests. In addition the chemical resistance of the Bucher components was examined. Finally, one of the most promising combinations of chemicals was used directly in the Bucher press during a full-scale test to verify the laboratory tests.
Translated title of the contributionSewage sludge dewatering in the tanning industry by use of Bucher presses - optimisation of the filter hose cleaning
Original languageGerman
QualificationDipl.-Ing.
Supervisors/Advisors
  • Lehner, Markus, Supervisor (internal)
Award date24 Oct 2014
Publication statusPublished - 2014

Bibliographical note

embargoed until 06-09-2019

Keywords

  • sewage sludge dewatering
  • tanning industry
  • Bucher presses
  • filter hose cleaning
  • chemical cleaning

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