SEE – Engineering Expertise from Plant Operations

SEE was founded in 2026, but the expertise behind it spans decades.
Dr.-Ing. Peter Schmittel spent 25 years in the chemical industry, including around 15 years as Operations Manager of the wastewater treatment plant and sewage sludge incineration facility at BASF SE. The facility is among the largest of its kind in the world.
Most recently, he developed energy transition projects, including a biogas plant, the “Wastewater Treatment Plant of the Future” initiative, and a large-scale heat pump utilizing energy recovered from wastewater.
Together with M.Sc. Hannah Mennecke, whose expertise includes data analytics, process simulation, and machine learning, SEE supports municipalities and industrial clients with consulting and engineering services, from the first concept and feasibility study to the successful commissioning of facilities and processes.
Our Team

Dr.-Ing. Peter Schmittel
Managing Director
I am a PhD-qualified process engineer and a third-generation engineer. For more than 25 years, I worked in the chemical industry, including over 15 years leading the wastewater treatment plant and sewage sludge incineration facility at BASF SE, one of Europe’s largest and most technically demanding facilities of its kind. My expertise spans the entire wastewater and sludge treatment value chain, from mechanical and biological treatment processes to thermal utilization and energy recovery.
As Chair of a DWA Expert Committee and a member of the VDI (Association of German Engineers) for more than 35 years, I am committed to technical innovation, practical solutions, and clear, straightforward engineering communication.
Simply put, I am passionate about engineering.


M. sc. Hannah Mennecke
Bioprocess Engineer
In 2025, I graduated with a Master’s degree in Process Engineering, specializing in Bioprocess Engineering. Bioprocess Engineering I completed my Master’s degree in Process Engineering with a specialization in Bioprocess Engineering in 2025, continuing a family tradition of engineering into its fourth generation. My professional background lies in the field of... Data Analytics, Process Simulation and Machine Learning: methods that enable the evaluation and further development of technical concepts.
Shape Sustainable Solutions with Us
SEE Schmittel Environmental Engineering GmbH provides innovative solutions for the challenges of environmental engineering. Trust in our expertise and experience.