Department of Built Environment

Wastewater treatment technologies

The group focuses on sustainable wastewater treatment. Valuable resources must be reused safely while committing to climate change mitigation. Aalto Donation Professorship 2018 – 2028.
Wastewater Treatment Technologies

Aalto Donation Professorship 2018 – 2028

The Donation professorship's field is wastewater treatment, and it is funded by several Finnish water utilities and associations working in the water sector. In April 2023, Henri Haimi was appointed a part-time professor of practice in the Department of Built Environment of Aalto University. His appointment will last five years.

Research themes

Our research themes are nutrient recovery, removal of micropollutants, and energy and GHG optimization – all this in wastewater treatment and especially in cold climate conditions.  

Nutrient recovery from wastewater

The role of wastewater treatment is moving from the removal of substances to the recycling of resources.

Nutrient recovery and removal system

Emerging pollutant management

The load of different pollutants in the Baltic Sea is a problem we need to solve.

Micropollutants research system in water laboratory

Climate impact of WWTP

Wastewater treatment plants are among the big energy consumers in our societies and they have a significant carbon footprint.

Carbon sink

Processes at cold temperature

In Finland and in the Baltic Sea region wastewaters and natural waters are relatively cold during the major part of the year. This affects treatment processes.

Wastewater plant in snowy winter time

Read more

Group's blog

Read here stories from students about working in the Water and Wastewater Engineering group.

Wastewater treatment research group photo


Here you can find more information about the organizations funding our research.

Logos of the funding companies

Master's theses done in the Group

Related news

HSY wastewater treatment plant from inside

Digital twin for optimizing the carbon balance in wastewater treatment

Researchers at Aalto are creating a digital model for automatic continuous predictive process simulations supporting wastewater treatment plant operation in a new project called DIGICARBA. The proposed digital tool will have a wastewater treatment process model connected to continuous data transmission from the Helsinki wastewater treatment plant.

Henri Haimi

FCG Project Manager Henri Haimi appointed as Professor of Practice at Aalto University

His expertise is in mitigating climate change in the wastewater sector, digital solutions and the recovery of resources from wastewater.



Here you can find our recent publications.

Growth of fungi and yeasts in food production waste streams : a feasibility study

D. Bansfield, K. Spilling, A. Mikola, J. Piiparinen 2023 BMC Microbiology

Incorporation of main line impact into life cycle assessment of nutrient recovery from reject water using novel membrane contactor technology

Sofia Högstrand, Juho Uzkurt Kaljunen, Raed A. Al-Juboori, Karin Jönsson, Hamse Kjerstadius, Anna Mikola, Greg Peters, Magdalena Svanström 2023 Journal of Cleaner Production

Decreasing dietary nitrogen consumption improves wastewater treatment efficiency and carbon footprint

N Rautiainen, PL Rantanen, M Jalava, A Mikola 2023 Water Science and Technology

Nascent application of aerobic granular sludge for recirculating aquaculture system effluent treatment : Performance, granule formation, and microbial community

Talvikki Suhonen, Raed A. Al-Juboori, Antonina Kruglova, Jani Pulkkinen, Jouni Vielma, Anna Mikola 2023 Aquacultural Engineering

Membrane contactor onsite piloting for nutrient recovery from mesophilic digester reject water : The effect of process conditions and pre-treatment options

Raed A. Al-Juboori, Juho Uzkurt Kaljunen, Ilaria Righetto, Anna Mikola 2022 Separation and Purification Technology

Bioflocculation of Euglena gracilis via direct application of fungal filaments : a rapid harvesting method

Danielle Bansfield, Kristian Spilling, Anna Mikola, Jonna Piiparinen 2022 JOURNAL OF APPLIED PHYCOLOGY

Adsorptive behavior of phosphorus onto recycled waste biosolids after being acid leached from wastewater sludge

Juho Uzkurt Kaljunen, Roza Yazdani, Raed A. Al-Juboori, Charlotte Zborowski, Kristoffer Meinander, Anna Mikola 2022 Chemical Engineering Journal Advances

The dangerous transporters : A study of microplastic-associated bacteria passing through municipal wastewater treatment

Antonina Kruglova, Barbara Muñoz-Palazón, Alejandro Gonzalez-Martinez, Anna Mikola, Riku Vahala, Julia Talvitie 2022 Environmental Pollution

Comprehensive evaluation of the carbon footprint components of wastewater treatment plants located in the Baltic Sea region

Mojtaba Maktabifard, Alexis Awaitey, Elina Merta, Henri Haimi, Ewa Zaborowska, Anna Mikola, Jacek Mąkinia 2022 Science of the Total Environment

Model-based identification of the dominant N2O emission pathway in a full-scale activated sludge system

Mojtaba Maktabifard, Kati Blomberg, Ewa Zaborowska, Anna Mikola, Jacek Mąkinia 2022 Journal of Cleaner Production
More information on our research in the Aalto research portal.
Research portal
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