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About us
Sustainable recycling technology for tomorrow’s world

We at pbo – an interdisciplinary team of highly qualified engineers from the fields of process engineering, civil engineering and electrical engineering – have understood that natural resources are finite. As specialists in sustainable recycling technology, we are therefore passionate about putting our know-how at the service of processing, recycling and renewable energies. This is how we protect the environment and climate – and take responsibility for the world of tomorrow.

From the idea to post-commissioning – processing plants from a single source

Whether mechanical or biological treatment: as an independent engineering office, we plan modern waste management plants and implement them for you from A to Z. This means that we accompany you from the initial idea to commissioning and beyond. In doing so, we include all questions of construction technology in our process engineering planning. 

pbo – that means a lot of experience, a high degree of flexibility and a cooperative partnership

At pbo, you benefit from short internal channels and a well-coordinated team. This makes us particularly flexible and quick to react. Founded in 1993 by Prof. Dr. Thomas Pretz, Dipl.-Ing. Thomas Bergedieck and Dipl.-Ing. Klaus Jörg Onasch, we offer you many years of planning experience, a cooperative partnership – and a service that is just right for you!

Team

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Dipl.-Ing. Thomas BergedieckManaging Director

+49 241 978 89 13
bergedieck@pbo.de

Professional training:
1978 – 1982 Studies in civil engineering, specialising in construction process engineering at the FH Aachen University of Applied Sciences
Degree: Dipl.-Ing.

Professional activity:
1993 – present Shareholder and Managing Director of Ingenieurgesellschaft pbo
1985 – 1993 Project Engineer / Managing Director at TILKE, Ingenieure für Umwelttechnik, Aachen
1982 – 1985 Calculator / Site Manager at a medium-sized construction company (Reinert, Borken)

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Dr.-Ing. Dipl.-Wirt.-Ing. Marcel GrünbeinManaging Director

+49 241 978 89 22
gruenbein@pbo.de

Professional training:
02/2006 – 12/2010 Doctorate in the Faculty of Georesources and Materials Engineering at RWTH Aachen University
Degree: Dr.-Ing.

04/2005 – 03/2007 Additional studies in economics for engineers and natural scientists at the Fernuniversität Hagen; Focus: General Business Administration, Operations Research
Degree: Dipl.-Wirt.-Ing.

10/1998 – 10/2003 Studies in the Faculty of Georesources and Materials Engineering at RWTH Aachen University: Waste Management Engineering; Focus: Processing and Recycling
Degree: Dipl.-Ing.

Professional activity:
01/2013 – present Managing Director of Ingenieurgesellschaft pbo
01/2010 – 12/2012 Authorised Signatory and Head of the Process Technology division of Ingenieurgesellschaft pbo
03/2006 – 12/2009 Project Manager at Ingenieurgesellschaft pbo
10/2003 – 02/2006 Project Engineer at Ingenieurgesellschaft pbo

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M.Sc. Dennis WegkampManaging Director

+49 241 978 89 16
wegkamp@pbo.de

Professional training:
2008 – 2014 Waste management engineering at RWTH Aachen University; specialisation in processing and recycling
Degree: M.Sc.

Professional activity:
2012 – present Project Engineer at Ingenieurgesellschaft pbo
2019 – 2021 Project manager at Ingenieurgesellschaft pbo with commercial power of attorney
2022 – present Managing Director at pbo Ingenieurgesellschaft mbH

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Dipl.-Ing. Klaus Jörg OnaschConsultant

+49 241 978 89 14
onasch@pbo.de

Professional training:
09/1977 – 01/1984 Studies in civil engineering at RWTH Aachen University; specialisation: hydraulic engineering and foundation engineering
Degree: Dipl.-Ing.

Professional activity:
1993 – 2021 Shareholder and Managing Director of Ingenieurgesellschaft pbo
1987 – 1993 Project Engineer at the planning office TILKE, Ingenieure für Umwelttechnik, Aachen.
From 1991 Managing Director
1985 – 1987 Scientific assistant at the Institute for Urban Water Management at the University of Essen
1985 Project Engineer at HYDROTEC, Aachen. Collaboration in the simulation of the groundwater situation in the area of the Georgswerder landfill, Hamburg
1984 Project-related Site Manager at the company Held+Franke, Cologne for the turnkey construction of a 10-storey residential building

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Dr.-Ing. Thomas PretzConsultant

+49 241 978 89 0
pretz@pbo.de

Professional training:
1983 – 1988 Doctorate in mining at RWTH Aachen University
Degree: Dr.-Ing.

1977 – 1983 Studied mining engineering at RWTH Aachen University; Specialisation: Preparation
Degree: Dipl.-Ing.

Professional activity:
1997 – 2020 Holder of the Chair and Head of the Institute for Processing and Recycling (I.A.R.) at RWTH Aachen University
1993 – present Shareholder at Ingenieurgesellschaft pbo
1993 – 2008 Managing Director at Ingenieurgesellschaft pbo
1990 – 2005 Partner of HTP, Engineering Company for Processing Technology and Environmental Process Engineering
1989 – 1993 Project Engineer at TILKE, Engineers for Environmental Technology, Aachen
1988 – 1989 Senior Engineer at the Institute for Processing Technology
1983 – 1988 Scientific assistant at the Institute for Treatment with Prof. Hoberg, RWTH Aachen University 

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Iris NowackOffice Management

+49 241 978 89 11
nowack@pbo.de

Professional training:
Training in office administration

Professional activity:
2013 – present Office Management Specialist at Ingenieurgesellschaft pbo 2002 – 2012 Secretary to the management of a bookshop
1995 – 2002 Commercial employee   

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Dipl.-Ing. Stefan Schneider

+49 241 978 89 12
schneider@pbo.de

Professional training:
1994 – 1995 Additional studies in environmental sciences
Degree: Magister Artium, M. Techn.

1985 – 1994 Studied electrical engineering/energy technology at RWTH Aachen University
Degree: Dipl.-Ing.

Professional activity:
2001 – present Project Manager at Ingenieurgesellschaft pbo
1996 – 2000 Project Engineer at Ingenieurgesellschaft pbo  

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Dipl. -Ing. Jörg Imberg

+49 241 978 89 19
imberg@pbo.de

Professional training:
Studied mining at RWTH Aachen, TU Clausthal Zellerfeld; specialised in processing
Degree: Dipl.-Ing.

Professional activity:
1994 – present Project Engineer/Project Manager at Ingenieurgesellschaft pbo
1991 – 1994 Project Engineer at the planning office HTP Ingenieurgesellschaft, Aachen

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M.Sc. Cedric Pereira

+49 241 978 89 23
pereira@pbo.de

Professional training:
2010 – 2015 Waste management engineering at RWTH Aachen University; specialisation in processing and recycling Degree: M.Sc.

Professional activity:
2013 – present Project Engineer at Ingenieurgesellschaft pbo

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M.Sc. Rainer Hollerbach

+49 241 978 89 26
hollerbach@pbo.de

Professional training:
2011 – 2017 Environmental engineering at RWTH Aachen University
Degree: M.Sc.

Professional activity:
2016 – present Project Engineer at Ingenieurgesellschaft pbo

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M.Sc. Dustin Raguse

+49 241 978 89 37
raguse@pbo.de

Professional training:
2011 – 2020 Environmental engineering at RWTH Aachen University
Degree: M.Sc.

Professional activity:
2018 – present Project Engineer at Ingenieurgesellschaft pbo

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M.Sc. Mitia Wohlgemuth

+49 241 978 89 29
wohlgemuth@pbo.de

Professional training:
2011 – 2019 Environmental engineering at RWTH Aachen University
Degree: M.Sc.

Professional activity:
2019 – present Project Engineer at Ingenieurgesellschaft pbo

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M.Sc. Tim Hafer

+49 241 978 89 35
hafer@pbo.de

Professional training:
2011 – 2012 Studied civil engineering at the University of Applied Sciences Cologne
2012 – 2017 Studied environmental engineering at the TU Freiberg
2017 – 2020 Environmental engineering at RWTH Aachen University Degree: M.Sc.

Professional activity:
2019 – present Project Engineer at Ingenieurgesellschaft pbo

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Dipl.-Ing. Philipp Bohlender

+49 241 978 89 21
bohlender@pbo.de

Professional training:
2000 – 2006 Studied civil engineering at the FH Aachen with focus on: Water and waste management
Degree: Dipl.-Ing.

Further training as Health and Safety Coordinator

Professional activity:
2008 – present Project Engineer at Ingenieurgesellschaft pbo
2006 – 2008 Project Engineer at Aachener Sachverständigen für Geologie, Grundbau und Altlastensanierung, ASG, Aachen

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Dipl.-Ing. Rainer Bosbach

+49 241 978 89 15
bosbach@pbo.de

Professional training:
Studied civil engineering at the FH Aachen; specialised in hydraulic engineering and waste management
Degree: Dipl.-Ing.

Professional activity:
1994 – present Project Manager at Ingenieurgesellschaft pbo
1991 – 1994 Project Engineer at AWA Entsorgung GmbH

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Dipl.-Ing. Michael Hütten

+49 241 978 89 20
huetten@pbo.de

Professional training:
2001 – 2007 Studied civil engineering at the University of Essen; specialisation in civil engineering
Degree: Dipl.-Ing.

1994 – 1997 Vocational training as a skilled building construction worker Degree: Concrete and reinforced concrete builder

Professional activity:
2009 – present Project Engineer at Ingenieurgesellschaft pbo
2008 – 2009 Project-related Site Manager at Jacob Durst GmbH

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M. Eng. Tobias Schmitz

+49 241 978 89 34
schmitz@pbo.de

Professional training:
2011 – 2014 Specialist for Recycling and Waste Management
2014 – present Civil engineering at FH Aachen University of Applied Sciences

Professional activity:
2017 – present Project Engineer at Ingenieurgesellschaft pbo

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Birgit Lichterstate-certified technician

+49 241 978 89 24
lichter@pbo.de

Professional training:
1992 – 1996 part-time further training at the Aachen University of Applied Sciences Degree: state-certified technician, specialising in civil engineering
1988 – 1991 Training as draughtswoman, specialising in civil engineering

Professional activity:
1994 – present Technician in the Design department of Ingenieurgesellschaft pbo
1992 – 1994 Draughtswoman in the Design department, DAR – Deutsche Abwasser Reinigungsgesellschaft Aachen, Engineering Office for Environmental Issues
1988 – 1992 Draftswoman in the Civil Engineering Office of the city of Stolberg

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Melanie Mingersstate-certified technician

+49 241 978 89 27
mingers@pbo.de

Professional training:
2009 – 2013 part-time further education at the Aachen University of Applied Sciences Degree: state-certified technician, specialising in structural engineering
2006 – 2009 Training as a draughtswoman specialising in civil engineering, road construction and landscaping at the company Bast GmbH (construction accounting for the construction company Dohmen GmbH & Co KG)

Professional activity:
2012 – present state-certified technician in the Design department of Ingenieurgesellschaft pbo
2011-2012 Draughtswoman in the Beckers engineering office in Geilenkirchen
2009 – 2011 Accountant at Bast GmbH (construction accounting for the construction company) 

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M.Eng. Tobias Roglic

+49 241 978 89 17
roglic@pbo.de

Professional training:
Studied civil engineering at the FH Aachen, specialising in Water and waste management
Degree: M.Eng.

Professional activity : 2020 – present Project Engineer at Ingenieurgesellschaft pbo

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M.Sc. Tom Jansen

+49 241 978 89 38
jansen@pbo.de

Professional training:
Environmental engineering at RWTH Aachen University
Degree: M.Sc. specialising in Urban water management

Professional activity:
01/2021 – 04/2021 Research assistant at Erftverband Bergheim
2021 – present Project Engineer at Ingenieurgesellschaft pbo

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Arthur Seifridstate-certified technician

+49 241 978 89 18
seifrid@pbo.de

Professional training:
Part-time further education at the University of Applied Sciences Aachen
Degree: State-certified technician – civil engineering

2011 – 2014
Training as a draftsman in civil engineering, road construction and landscaping at the company TUTTAHS & MEYER Engineering Company

Professional activity:
2014 until present state-certified technician in the Design department of Ingenieurgesellschaft pbo

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Beate EnkirchDraughtswoman

+49 241 978 89 31
enkirch@pbo.de

Professional training:
1986 – 1990 Training as technical draughtswoman
1990 – 1993 Further training as CAD draughtswoman

Professional activity:
1993 – 2019 Draughtswoman in an engineering office in the field of structural and civil engineering
2020 – present Draughtswoman in the Design department of Ingenieurgesellschaft pbo

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Niklas WegnerTrainee

+49 241 978 89 36
wegner@pbo.de

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B.Sc. Elisa Brück

+49 241 978 89 32
brueck@pbo.de

Berufsausbildung:
2017 – heute: Umweltingenieurwesen an der RWTH Aachen

Abschluss:
B.Sc.

Berufstätigkeit:
2018 – 2021 Tutorin für Mechanik am AMT (RWTH)
2021 – heute Projektingenieurin bei der Ingenieurgesellschaft pbo

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B.Sc. Pinkas Hoffmann

+49 241 978 89 32
hoffmann@pbo.de

Berufsausbildung:
2015 – 2019: B.Sc. Wirtschaftsingenieurwesen Elektro- und Energietechnik an der RWTH Aachen
2019 – heute: M.Sc. Wirtschaftsingenieurwesen Elektro- und Energietechnik an der RWTH Aachen

Abschluss:
B.Sc.

Berufstätigkeit:
2019 – heute: Projektingenieur bei der Ingenieurgesellschaft pbo

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B.Sc. Arne Hüßler

+49 241 978 89 32
huessler@pbo.de

Berufsausbildung:
2016 – heute Umweltingenieurwesen an der RWTH Aachen

Abschluss:
B.Sc.

Berufstätigkeit:
2020 – heute Projektingenieur bei der Ingenieurgesellschaft pbo

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B.Eng. Patrick Perse

+49 241 978 89 32
perse@pbo.de

Berufsausbildung:
2016 – 2018 Umweltingenieurwesen an der RWTH
Aachen 2018 – heute  Bauingenieurwesen an der FH Aachen

Abschluss:
B.Eng.

Berufstätigkeit:
2020 – heute Projektingenieur bei der Ingenieurgesellschaft pbo

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B.Eng. Nils Amende

+49 241 978 89 32
amende@pbo.de

Berufsausbildung:
2015 – 2018 Bauingenieurwesen an der RWTH Aachen

2018 – heute Bauingenieurwesen an der FH Aachen

Abschluss:
B.Eng.

Berufstätigkeit:
2021 – heute Projektingenieur bei der Ingenieurgesellschaft pbo

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Berufsausbildung:
2017 – heute Umweltingenieurwesen an der RWTH Aachen

Berufstätigkeit:
Dezember 2021 – heute Projektingenieurin bei der Ingenieurgesellschaft pbo

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