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internship;
treatment of secondary effluent and its effect on nanofiltration performance

Duration: 4 months or more, starting February 2026 (or later)
Location:
Wetsus, European Centre of Excellence for Sustainable Water Technology (Leeuwarden, Friesland, NL)
Allowance: 
The maximum Wetsus allowance for this internship is 425 € per month.  Grant holding students (i.e. Erasmus or other) receiving financial support of less than 425 € per month can apply for a top-up supplement to the maximum allowance.

Project background

Nanofiltration (NF) is gaining increasing attention as a key technology in the production of high-quality water from treated wastewater. However, its long-term performance and selectivity can be significantly influenced by the quality of the feed water. Goal of this project is to investigate the effect of different pre-treatment methods on the performance of a hollow fiber nanofiltration membrane in the treatment of secondary effluent from a source-separated wastewater treatment plant (greywater) in The Netherlands.

Research Description

In this internship project, you will work with a laboratory-scale setup already installed at Wetsus. The NF units will be operated over an extended period to assess their long-term stability, selectivity, and overall performance.

The focus will be on:

• Operating and optimizing different pretreatment units
• Running nanofiltration experiments and monitoring membrane performance
• Assessing removal of key water quality parameters and membrane behaviour
• Evaluating system stability under different operational conditions

Candidate profile:

BSc or MSc student with background in one of the following fields:

  • (Bio)process/chemical engineering,
  • Environmental sciences,
  • Water technology,
  • Or related fields
  • Experience with laboratory work
  • Knowledge of membrane processes and technologies is a plus
  • Enrolment in an EU university, for non-EU residents, enrolment in a Dutch university is obligatory

 

Candidate tasks:

• Assist with operation and optimisation of pretreatment and NF units
• Prepare samples for water quality analyses (conventional wastewater parameters, ion composition, organic micropollutants)
• Participate in pilot plant sampling and sample preparation
• Data analysis

Location
This project will be carried out at Wetsus, European centre of excellence for sustainable water technology, located in Leeuwarden, the Netherlands.

Benefits:

• Experience with setting up and running experiments
• Hands-on experience in various analytical techniques (water analysis)
• Understanding of membrane processes
• Data analysis and reporting skills
• Experience working in an international research environment

How to apply:

  1. Your CV (max. 2 pages, A4 page), including a list of attended courses
  2. Motivation letter (max. 1 page, A4 page) (in English)

Feel free to contact Mario Ilić (mario.ilic@wetsus.nl) if you have further questions or need more information.

Application form Treatment of secondary effluent and its effect on nanofiltration performance

  • Max. bestandsgrootte: 1 GB.
  • Max. bestandsgrootte: 1 GB.

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