Overview

Mikkeli’s demonstration action involved the demolition of two public buildings using circular material management methods, including digital tools: Pankalampi Health Care Centre and Tuukkala hospital. The learnings and experiences of these demolitions were incorporated into a circular demolition operations model and a generic demolition contract that can be applied in further public projects.

Implementation

• The sites were scanned and a pre-demolition audit identified potentially recoverable materials and their characteristics.
• Following  a selective demolition procedure, salvaged materials were incorporated into a digital databank and construction materials marketplace.
• Use of the marketplace was promoted to other construction sector actors, private and public, both to offer and to obtain secondary construction materials.

Relevant instruments

• 3D Tool for Tracking CDW On-Site
• Databank & Digital Marketplace for Recovered Construction Materials
• Lifecycle CO2 calculators for soil, concrete and mixed CDW
• Pre-demolition & selective demolition procedure

Overview

A new collection and sorting approach wwas tested in a series of apartment buildings in the Peitsari district, owned by the social housing company Mikalo Ltd. The goal was to increase the collection of bio-waste in quality and quantity and simultaneously reduce the bio-waste percentage in the collected mixed waste that is disposed of by incineration.

Implementation

• Paper bags were distributed to residents for the collection of bio-waste. Thes are less problematic for the new biogas plant in Mikkeli than biodegradable plastic bags which are often used.
• An information campaign to encourage residents to separate their bio-waste was implemented
   

Relevant instruments

Mikkeli organised workshops and awareness-raising campaigns to improve the collection of bio-waste in the Peitsari district of Mikkeli. More information can be found in Mikkeli's Bio-waste demonstration report.

Overview

This demonstration action aimed to optimise the production of biogas from bio-waste collected in Mikkeli, and the development of valuable soil improvement by-products from the nutrients present in the residual streams.

Implementation

• A series of mechanical pre-treatment, waste treatment, and end-product optimisation techniques were explored in a laboratory and pilot-scale
• The biogas produced in the new biogas plant, is used to run local buses
• Local companies and stakeholders were closely involved in identifying and developing potential business opportunities deriving from these tests

Relevant instruments

• Procurement guide for usage of biogas as a motive power in transportation and logistics services
• Case Study: Promoting the use of biogas in transportation and logistics
• Case Study: Use of biogas reguirements in waste transportation tender
• General guide for organic waste management in public procurement