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Purification of nitrogen and heavy metal-containing runoff using hybrid purification systems in arctic areas: TypArkt

Finnish website

Project background:

In Finland, many human-derived processes, including mining, municipal wastewater treatment, urban runoff, agriculture, forestry and peat extraction, lead to nitrogen and/or heavy metal loads to recipient water bodies. Often it is not cost-effective to build active water treatment units for many of these operations. This is true e.g. for mining operations (especially after mine closure), municipalities producing small amounts of wastewater (e.g. in holiday resorts), urban runoffs, peat extraction and agriculture. When active treatment options are not economically feasible, passive treatment options (bioreactors, moss pools) in various combinations with active treatment can be used to treat the water in a cost-efficient manner. It is expected that the demand for passive treatment options will increase in the future, because the quality limits required in water purification are being lowered and there is a need for year-round control of contaminant load to recipient water bodies.

Project aim and task:

The aims of the project are (i) to obtain long-term (> 2 years) knowledge on the functionality of hybrid passive water treatment systems built during the previous project HybArkt for removal of nitrogen and/or heavy metals through follow-up monitoring and to evaluate the working life and efficiency of the purification unit, and (ii) incorporate the obtained knowledge into a tool for planning and designing of hybrid water treatment systems which will make the information easily accessible for various shareholders, such as consultants and other players planning purification solutions.

The project is divided into 3 work packages:

1. Monitoring the hybrid pilot treatment systems

2. Updating the tool for planning hybrid water treatment system

3. Interactive planning and communication

Duration of the project, partners and budget: 1.2.2021-30.6.2023, University of Oulu (Water, Energy and Environmental Engineering and Ecology and Genetics research units) and Finnish Environment Institute, 200 000 €.

The project is mainly funded by European Regional Development Fund via the Centre for Economic Development, Transport and the Environment for North Ostrobothnia. Other funders and partners are: Pyhäsalmi Mine Oy, Kallon vesi- ja viemäriosuuskunta, Levin Vesihuolto Oy, Boliden Kevitsa Mining Oy, Municipality of Kittilä, Maa- ja vesitekniikan tuki ry., University of Oulu and Finnish Environment Institute.

Contact information:

Heini Postila
Water, Energy and Environmental engineering research unit

P.O. BOX 4300
90014 University of Oulu
E-mail: heini.postila@oulu.fi 


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Last updated: 7.5.2021