These include a sophisticated air filtration system employing bag filters. The areas where manual sorting takes place are under negative pressure to ensure clean air, and the staff rest areas are similarly protected. The Ronne plant supplies 6.2MW to the district heating system. Bornholm has a wide range of hotels and bed and breakfast accommodation, and in addition around 3,000 privately owned summer homes. In 1994, the total input to the Ronne plant was 20,478 tonnes of waste from which 3,500 tonnes of ash and metal remained.
Ferrous metal is recovered from the incoming waste and post-combustion from the ash.
Most of the health care wastes from the island s only hospital are burned in the Ronne plant, with special precautions taken to protect the staff. These include the packaging of health care wastes into a special box, which is then placed manually into the crane and deposited directly into the furnace. As part of its management programme, Bofa ran training courses for hospital staff. Batteries A European Union-funded battery collection scheme was started in 1987, using containers with four compartments. The resulting battery collections were poorly sorted, and it was clear that the four definitions of battery types was too complicated.