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Thesis/internship; Investigating biofouling on heat exchangers when using greywater as a heat source

Internship 3 to 4 months

Oostergoweg, Leeuwarden (Netherlands)

Published on 26 June 2026

  • Contract

    Internship 3 to 4 months

  • Location

    Oostergoweg, Leeuwarden (Netherlands)

  • Start date

    August 2026

  • Salary

    425 EUR / monthly

  • Remote working

    No remote working

Background

Interested in both thermodynamics and microbiology? Ready to explore a truly multidisciplinary research challenge? This project is perfect for you.

Greywater is a mixing stream of household wastewater that does not contain toilet flushing water, including wastewater from showering, washing machines, dishwashers, etc. Greywater contains a large amount of thermal energy, making it highly attractive for heat recovery using heat pumps. However, greywater has a large amount of microorganisms and nutrients. During the heat recovery process, the heat exchangers remain in continuous contact with greywater for a long time, which promotes the development of biofouling layers on exchanger surfaces. This biofouling can severely reduce heat transfer efficiency and compromise overall system performance. In this project, we are eager to investigate the biofouling formation in greywater heat recovery systems and develop effective strategies to mitigate or prevent it.

Your responsibilities:

  • Sampling from the wastewater treatment plant and running the experimental setup
  • Sample analysis, including SEX-EDX, Flow cytometry, fluorescence microscope, DNA extraction, etc.
  • Data analysis and reporting

Our Requirements:

  • Background in chemical engineering, microbiology, environmental engineering, or related fields
  • Lab experience is required
  • Excellent English communication skills, both writing and speaking
  • Driving license
  • Currently enrolled in Master's studies
  • EU citizen or non-EU citizen already enrolled in a Dutch university.

Application:

  • Upload a motivation letter and your CV to the form listed on the website. If you have further questions, please contact Shuoguang Yang (< email deleted for security reasons >). Please apply for this position by filling in the application form.

Application deadline

As long as the job is online

Study level

Master level or equivalent

Job Category

Chemistry & Processes

More about the company

Wetsus, European Centre of Excellence for Sustainable Water Technology

European centre of excellence for sustainable water technology