Evaluierung ressourcenschonender und energiesparender Verfahrensrouten zur Behandlung des Abwassers aus der Leiterplattenproduktion

Translated title of the contribution: Evaluation of resource-saving and energy-saving process routes for the treatment of wastewater from printed circuit board production

Matthias Duller

Research output: ThesisMaster's Thesis

Abstract

Global climate and environmental goals require innovative approaches to resource efficiency and emission reduction, especially in energy-intensive industries such as printed circuit board production. This master's thesis examines resource-saving and energy-saving process routes for wastewater treatment with the aim of contributing to the decarbonization and circular economy of the company AT&S Austria Technologie & Systemtechnik AG. In the course of this master's thesis, the company site in Nanjangud, India, is specifically examined. In India, the acute water and wastewater issues intensify the need for sustainable solutions. By implementing heat recovery using a hydraulic separator and heat pump, waste heat losses of refrigeration machines can be reduced, and natural gas consumption for steam boiler operation can be completely replaced through waste heat utilization. This leads to a reduction in natural gas consumption by 70% and an annual saving of 579 tons of CO₂ emissions, thereby reducing direct emissions from 11% to 3%. The integration of nanofiltration, membrane distillation and crystallization increases the energy efficiency of wastewater treatment and enables the recovery of clean salts for reuse in other industries. Despite challenges in data acquisition and system design, the results show significant potential for energy savings and emission reductions. Recommendations include more precise system design through detailed measurements. Future research should focus on utilizing the still available unused waste heat potential. This work provides practical approaches to optimizing processes in the printed circuit board industry, considering ecological and economic aspects.
Translated title of the contributionEvaluation of resource-saving and energy-saving process routes for the treatment of wastewater from printed circuit board production
Original languageGerman
QualificationDipl.-Ing.
Awarding Institution
  • Montanuniversität
Supervisors/Advisors
  • Wolf-Zöllner, Verena Maria, Supervisor (internal)
Award date20 Dec 2024
Publication statusPublished - 2024

Bibliographical note

embargoed until 27-10-2029

Keywords

  • Decarbonization
  • Circular economy
  • Wastewater treatment
  • Printed circuit board production
  • Desalination

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