Circular MuSe - From Presentation to Solutions in Practice

The Circular MuSe pilot focusing on the reuse of sand collected during winter street cleaning was one of the practical solutions presented to COEE 2026 participants during a study visit to Wejherowo. The visit to Ekofabryka Wejherowo demonstrated how circular economy principles can be put into practice and contribute to more efficient use of resources in municipal services.

The final day of the 5th International Conference of Ecological and Environmental Engineering – COEE 2026 was dedicated to study visits, giving participants an opportunity to relate the topics presented and discussed during the conference to concrete solutions implemented at the local level.

One of the sites included in the programme was Ekofabryka Wejherowo, where participants learned about circular economy solutions and practical experience related to their implementation in an urban context.

Circular MuSe pilot in Wejherowo

An important part of the visit was the presentation of the Circular MuSe pilot focusing on the reuse of sand collected during winter street cleaning in Wejherowo. The activity contributes to one of the project’s key objectives – increasing the circularity of municipal services through resource recovery and reuse, as well as developing new approaches to material management.

The visit provided participants with an opportunity to explore the practical dimension of the solution and learn about local experience with its implementation. It also demonstrated how a material previously treated as waste can be considered a potential resource and brought back into circulation.

The experience gained in Wejherowo is also relevant in terms of the potential transfer and adaptation of similar solutions by other cities and municipalities. Combining knowledge exchange, demonstration of solutions and practical implementation experience is an important element of Circular MuSe and supports the development of more circular models for municipal service delivery.


COEE 2026 – the 5th International Conference of Ecological and Environmental Engineering – was organised by Gdańsk University of Technology and its Faculty of Civil and Environmental Engineering.

CONE Project Partners Met in Wejherowo

On 9 September 2026, CONE project partners met in Wejherowo, combining a working meeting with a study visit to sites connected with local project activities. The programme provided an opportunity to discuss the progress of the project and the next stages of CONE implementation, while also taking a closer look at the practical application of Nature-Based Solutions (NBS) in urban areas.

An important part of the programme was a visit to sites connected with CONE pilot activities implemented in Wejherowo. The partners visited the courtyard at 8 Śmiechowska Street, where a rain garden has been created, as well as the site of the former mill pond on the Cedron River, whose restoration is intended to restore its water retention capacity. The field visit provided an opportunity to learn about local conditions and exchange experience on the practical application of Nature-Based Solutions in water management and urban space.

The programme also included a visit to Ekofabryka Wejherowo, where participants learned about local solutions and experience related to municipal management.

Partners’ meeting at Wejherowo Town Hall

Another part of the programme took place at Wejherowo Town Hall. The Mayor of Wejherowo, Krzysztof Hildebrandt, introduced the participants to the city, its history and development priorities. A visit to the Museum of the Wejherowo Region provided an opportunity to gain further insight into the local context and history of the city.

The Town Hall also hosted the working session of the CONE partners’ meeting, focusing on the ongoing implementation of the project, progress to date and planned activities. Direct exchange between the partners, combined with visits to the pilot sites, made it possible to relate project discussions to the specific conditions and challenges associated with implementing Nature-Based Solutions in cities.

The meeting in Wejherowo thus combined work on the further implementation of the project with a practical perspective on local CONE activities and the potential of Nature-Based Solutions to contribute to more climate-resilient urban areas.

NURSECOAST-II, CONE and Circular MuSe – From Knowledge to Practice at COEE 2026

Study visits to Wejherowo and Gdańsk concluded the participation of NURSECOAST-II, CONE and Circular MuSe in COEE 2026. The final day of the conference gave participants an opportunity to see practical solutions for sustainable water management, green retention and the circular economy – areas directly linked to the activities developed within these projects.

The final part of the 5th International Conference of Ecological and Environmental Engineering – COEE 2026 programme consisted of study visits to Wejherowo and Gdańsk. Following several days of presentations, panel discussions and exchange of experience, participants had the opportunity to see how the topics discussed during the conference translate into concrete solutions implemented at the local level.

Wejherowo – sustainable water and waste management

In Wejherowo, participants visited Ekofabryka Wejherowo, where practical solutions and experience related to waste management and the transition towards more circular use of resources were presented. The programme also addressed sustainable water management at the city level.

Wejherowo provided a particularly clear example of how the topics discussed at the conference connect with activities carried out within the CONE and Circular MuSe projects. The two projects address complementary areas: the use of Nature-Based Solutions in stormwater management and the implementation of circular economy principles in municipal services.

Gdańsk – green retention and resource recovery

In Gdańsk, the first part of the visit focused on green retention. Participants learned about Nature-Based Solutions (NBS) used in stormwater management and their role in increasing urban resilience to the impacts of climate change.

Another part of the programme focused on waste management and the transition from conventional waste management towards resource recovery and reuse. The solutions presented demonstrated how circular economy principles can be translated into the practical operation of cities and municipal infrastructure.

From conference knowledge to practical solutions

The study visits provided a practical continuation of the topics presented and discussed during COEE 2026. They enabled participants to relate research, project results and exchanged experience to solutions operating under real-life conditions.

Activities developed within CONE and Circular MuSe in Wejherowo demonstrated two important directions in urban transformation: the use of Nature-Based Solutions in water management and the implementation of circular economy principles. Together with the experience of NURSECOAST-II in sustainable water and wastewater management, they provided a coherent perspective on how research, knowledge exchange and project cooperation can lead to practical solutions across the Baltic Sea Region.


COEE 2026 – the 5th International Conference of Ecological and Environmental Engineering – was organised by Gdańsk University of Technology and its Faculty of Civil and Environmental Engineering.

NURSECOAST-II at COEE 2026 - Solutions, Pilots and Exchange of Experience

The NURSECOAST-II project had a strong presence at the 5th International Conference of Ecological and Environmental Engineering (COEE 2026) in Sopot. Experiences and solutions developed within the project were presented during three Ideation Project Multi-Forum & Panel Discussion sessions focusing on nature-based solutions, circularity, and the mitigation of emerging pollutants. The conference also provided a space for direct knowledge exchange between the scientific and expert community and representatives of local authorities and the municipal sector.

NURSECOAST-II at COEE 2026

The 5th International Conference of Ecological and Environmental Engineering – COEE 2026 is taking place in Sopot from 6 to 9 September 2026, bringing together researchers, experts and practitioners from different countries to discuss current challenges and solutions in ecological and environmental engineering.

The conference is also attended by representatives of local authorities and the municipal sector, providing them with an opportunity to learn about research findings, practical experience and solutions addressing current challenges in areas such as wastewater management and environmental protection.

NURSECOAST-II in three Ideation Project Multi-Forum sessions

On 8 September, NURSECOAST-II experiences and solutions were presented during three Ideation Project Multi-Forum & Panel Discussion sessions:

The project contributed experience related to the challenges caused by seasonal increases in wastewater volumes in tourist destinations across the Baltic Sea Region. NURSECOAST-II combines research and expert knowledge with the practical testing of solutions at pilot sites, allowing their performance to be assessed under real-life conditions.

From pilot activities to practical solutions

The presentations at COEE 2026 focused on solutions being developed and tested through NURSECOAST-II pilot activities. These included approaches to reducing nutrient loads in wastewater treatment plants serving tourist areas, experience from a pilot investment in a wastewater treatment plant in Finland, and the application of nanobubble technology in wastewater treatment.

The project's presence at the conference was complemented by posters presenting the NURSECOAST-II pilot activities and brochures introducing the project's activities, solutions and results. This allowed participants to explore both the technical aspects of the tested solutions and the broader range of knowledge and experience developed within the project.

Putting knowledge into practice

The conference presentations and discussions will be followed by a practical component. On 9 September, participants will take part in study visits, providing an opportunity to see solutions related to wastewater management and the challenges addressed by NURSECOAST-II in practice.

By combining scientific knowledge, experience from pilot activities, exchange between projects, and the involvement of representatives of local authorities and the municipal sector, the event provides a platform to discuss not only the technologies themselves, but also their potential application and transfer to other locations across the Baltic Sea Region.

CONE on Nature-Based Solutions at COEE 2026

The CONE – Cities of Nature project was presented at the 5th International Conference of Ecological and Environmental Engineering (COEE 2026) in Sopot. On 8 September, as part of the Ideation Project Multi-Forum & Panel Discussion “Nature-Based Solutions in Urban Areas”, the project contributed its experience from Urban Living Labs, where nature-based solutions are combined with the active involvement of local stakeholders in their planning, implementation and evaluation.

Nature-Based Solutions at the centre of the discussion

The “Nature-Based Solutions in Urban Areas” session focused on nature-based solutions (NBS) and their potential to address current environmental and climate challenges.

The Ideation Project Multi-Forum provided a space to bring together experiences from different projects, research approaches, and solutions being developed and tested in practice. Discussions covered, among other topics, the use of NBS in urban areas, green infrastructure, and the adaptation of cities and local communities to climate change.

CONE experience from Urban Living Labs

CONE contributed to the discussion with experience gained through activities carried out within Urban Living Labs. Within the project, nature-based solutions are developed not only as technical and environmental interventions, but also through a process that actively involves local stakeholders.

This approach makes it possible to combine the planning and implementation of NBS with the knowledge and needs of local communities. Stakeholders can participate in the development, testing and evaluation of solutions, helping to ensure that the activities are better adapted to the specific conditions and needs of each location.

Knowledge and experience exchange

CONE's participation in COEE 2026 also provided an opportunity to exchange knowledge and experience among representatives of international projects, the scientific community, and practitioners working with nature-based solutions, green infrastructure and climate change adaptation.

The conference discussions will be followed by further project activities. On 9 September, CONE partners will meet in Wejherowo for a partner meeting and study visits focused on further cooperation and the exchange of experience within the project.

Combining participation in the international conference with the planned project activities will provide an opportunity to connect the broader discussion on Nature-Based Solutions with the practical experience of CONE partners.

Circular MuSe on Circular Municipal Services at COEE 2026

How can circularity in municipal services be increased and proven solutions effectively transferred to smaller towns and rural areas? These questions were at the centre of the Circular MuSe presentation during the Ideation Project Multi-Forum & Panel Discussion “Circularity in Waste & Water Management”, held on 8 September as part of the 5th International Conference of Ecological and Environmental Engineering (COEE 2026) in Sopot.

Circular MuSe in the discussion on circular municipal services

During the forum, the Circular MuSe approach to more efficient and circular use of resources in municipal services was presented. The project focuses on identifying and transferring proven solutions, developing new approaches through pilot activities, and building the capacities of local authorities and municipal service providers.

The activities are primarily targeted at smaller towns and rural areas in the South Baltic region, supporting local actors in accessing and applying knowledge and experience related to the implementation of circular economy principles.

Circular Municipal Services Hub – knowledge and experience in one place

One of the key elements presented during the forum was the Circular Municipal Services Hub, currently being developed within the project. The Hub is designed to bring together case studies, good practices and circular economy solutions, while providing access to the knowledge and experience behind their practical implementation.

Knowledge transfer is also supported through training, mentoring, study visits and demonstration visits, enabling the exchange of experience among local authorities, municipal service providers, experts and project partners.

Circular MuSe pilot activities

Pilot activities are an important part of Circular MuSe, allowing circular economy solutions to be tested in practice.

One of these pilots is being implemented in Wejherowo and focuses on the recovery and reuse of sand collected during street cleaning. Other pilot activities address the use of sediments from retention basins, as well as methods for their treatment and subsequent reuse.

The practical dimension of Circular MuSe continued on 9 September in Wejherowo, where one of the study and demonstration visits planned within the project took place.

Exchange of experience between projects

The Ideation Project Multi-Forum at COEE 2026 also brought together representatives of other international projects, including CONE, NURSECOAST-II, CURE NbS, GINA, SMARTER, ReNutriWater, GI-mine and SYMBIOTER.

The forum provided a space for exchanging experience on water and circular resource management, nature-based solutions and the mitigation of micropollutants.

Circular MuSe’s participation in the forum combined the presentation of tools and pilot activities developed within the project with an exchange of knowledge and experience on the practical implementation of circular economy principles in municipal services.

SCONE at the COEE 2026 Conference in Sopot

The SCONE – Sustainability Cooperation Network in the South Baltic project was present at the 5th International Conference of Ecological and Environmental Engineering (COEE 2026), held in Sopot from 6 to 9 September. Participants of the international event had an opportunity to learn about the project, its main objectives and its activities supporting education and cooperation for sustainable development through information materials presented at the conference.

SCONE in an international scientific and expert environment

COEE 2026 brought together researchers, experts and practitioners addressing current challenges in environmental engineering and environmental protection. SCONE's presence at the conference provided an opportunity to increase the project's visibility and present its ideas to an international audience engaged in sustainability issues.

SCONE focuses on education for sustainable development, developing teachers' competences, engaging young people in climate and environmental activities, and strengthening cross-border cooperation in the South Baltic region.

The project's focus was closely connected with the broad range of topics addressed at COEE 2026, including nature-based solutions, climate change adaptation, sustainable water and waste management, and the circular economy.

Projects and solutions for sustainable development

Other projects involving the Association of Polish Communes Euroregion Baltic were also present at COEE 2026. CONE, Circular MuSe and NURSECOAST-II were presented as part of the project forum and panel discussions, addressing different aspects of nature-based solutions, the circular economy and sustainable water management.

The presence of these projects at the conference created an opportunity to present different approaches and experiences and to exchange knowledge on solutions addressing current environmental challenges.

SCONE contributes to this discussion from the perspective of education, cross-border cooperation and youth engagement – important elements in building a more sustainable future for the South Baltic region.

Circular MuSe at the COEE 2026 Conference in Sopot

The Circular MuSe project was presented at the 5th International Conference of Ecological and Environmental Engineering (COEE 2026) in Sopot. Prof. Krzysztof Czerwionka from Gdańsk University of Technology presented results of work on the safe recovery and reuse of material collected during street cleaning, including experience from the pilot activity implemented in Wejherowo.

From street waste to resource

During the conference, Prof. Krzysztof Czerwionka from Gdańsk University of Technology delivered the presentation “From Street Waste to Resource: Environmental Safety and Circular Reuse of Street-Sweeping Sand”, focusing on activities carried out within the Circular MuSe project.

The presentation addressed the management of material collected during street cleaning and its potential for safe reuse in line with circular economy principles. One of the examples presented was the pilot activity implemented in Wejherowo.

Circular MuSe pilot in Wejherowo

The pilot tests the washing of material collected during street cleaning in order to recover the sand it contains. The aim is to assess whether material that would normally be treated as waste can, after appropriate treatment, be safely reused.

The activities also include assessing the quality of the recovered material and testing solutions for the treatment of water generated during the washing process.

The Wejherowo pilot demonstrates in practice how solutions developed within Circular MuSe can support more efficient use of resources in municipal services and the implementation of circular economy principles at the local level.

Circular MuSe in the circular economy discussion

The project's presence at COEE 2026 went beyond the presentation of project results. Circular MuSe was also part of the Ideation Project Multi-Forum & Panel Discussion: Circularity in Waste & Water Management, dedicated to the exchange of experience and discussion on solutions supporting circularity in the waste and water management sectors.

Participation in the conference provided an opportunity to share experience gained through the Circular MuSe pilot activities and to exchange knowledge on the potential for wider application of the solutions being tested in municipal services.