Historical Review Report

The report examines the transition from linear to circular resource use in wastewater management, focusing on the socio-cultural barriers to recycling sewage sludge as fertilizer. It analyzes historical practices in the EU and provides detailed case studies from three river basins in Sweden, Poland, and Finland, highlighting how perceptions of risk and regulatory gaps hinder the adoption of eco-technologies.

• The transition to a circular economy is hindered by deeply engrained linear resource utilization models, including tax structures that burden human labor while remaining lenient toward the use of finite resources.
• Sewage sludge application on farmland is the most common disposal method in the EU-27, used for almost half of all volumes, while incineration accounts for slightly less than 25%.
• EU sewage sludge management is fragmented due to the outdated 'Sludge Directive' (86/278/EEC), which has not been revised in over 30 years and only limits heavy metals, ignoring modern concerns like pharmaceuticals and microplastics.
• In Sweden, the Revaq certification program launched in 2008 aims to limit contaminants in wastewater to enable sludge use on farms, but it has not fully resolved the issue as some grain mills still reject sludge-fertilized crops due to fear of consumer backlash.
• The Słupsk wastewater treatment plant in Poland successfully produces a certified organic fertilizer called 'BIOTOP' through composting, which is in high demand by large farms (75% of production) and is an alternative to the national trend toward incineration.
• In Finland, the Helsinki Region Environmental Services Authority (HSY) produces 'Metsäpirtin multa', a sludge-based fertilizer mixed with peat and sold for lawns and gardens, as agricultural use was largely abandoned following opposition from farmers' organizations in the 1980s and 1990s.
• Technical recovery of nutrients from sewage sludge is complicated by the 'blending and mixing' of wastewater, where desired substances like phosphorus and nitrogen are intermingled with pharmaceuticals, industrial effluents, and street runoff.
• There is a recurring pattern where new contaminants are identified just as previous ones are mitigated; for example, after heavy metals were reduced, flame retardants (PFAS), pharmaceuticals, and microplastics emerged as new risk factors.

APA

Olsson, O., Giełczewski, M., Koskiaho, J., & Barquet, K. (2018). Historical Review Report. Stockholm Environment Institute. https://www.sei.org/wp-content/uploads/2022/03/circularity-from-concept-to-practice.pdf

Chicago

Olsson, Olle, Marek Giełczewski, Jari Koskiaho, and Karina Barquet. Historical Review Report. Stockholm Environment Institute, 2018. https://www.sei.org/wp-content/uploads/2022/03/circularity-from-concept-to-practice.pdf.

Wikipedia

{{cite report |last1=Olsson |first1=Olle |last2=Giełczewski |first2=Marek |last3=Koskiaho |first3=Jari |last4=Barquet |first4=Karina |title=Historical Review Report |publisher=Stockholm Environment Institute |date=27 June 2018 |url=https://www.sei.org/wp-content/uploads/2022/03/circularity-from-concept-to-practice.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{olsson2018historical, author = {Olsson, Olle and Giełczewski, Marek and Koskiaho, Jari and Barquet, Karina}, title = {{Historical Review Report}}, institution = {Stockholm Environment Institute}, year = {2018}, month = jun, url = {https://www.sei.org/wp-content/uploads/2022/03/circularity-from-concept-to-practice.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }