SIHTI 2. Energy and environmental technology. Yearbook 1998. Project presentations

Great revolutions have taken place in the intersection of energy and environment in recent years. The energy market has been liberated, and in part of sustainable development, an ecological pattern of thought has gained a footing in traditional market economy, typical examples being green electricity and recycling. As regards environmental problems, we have moved towards a mega-league; for example, we are living an era of great resolutions on environmental issues. More diversified knowhow is required from the sellers of energy and environmental technology. Long-term environmental impacts of the use of products are of decisive significance in business transactions. New innovative soft-line technology is required in addition to conventional hard technology. The Finnish National SIHTI Programme has attended to these issues via so-called strategic surveys. Knowledge required for the control of environmental protection was created in a number of projects on evaluation of environmental impacts and in assessments searching an optimum for economy and environmental protection. New tools and methods were developed for environmental accounting in enterprises, and diversified impacts of emission exchange were analysed. Indicators describing the development of greenhouse gases were developed and costs and efficiency of alternative technologies for limiting emissions were analysed to support political decision-making. In the SIHTI Programme, a strong research integrity was formed in the field of flue gas cleaning technology, and research groups with a high international esteem were also formed. Most significant emission sources of particulates were surveyed, their composition and particle size distributions were measured, and different tools of improving the separation capacity of scrubbers and electrical precipitators were studied. This research integrity included both theoretical modelling calculations, laboratory-scale equipment-technical development and full-scale testing. An indicator of successful focusing is that research results have already been utilised commercially, and industrial-scale equipment commissions have been executed. New innovative technical solutions for measuring emissions to the environment have also been developed. To improve the control of environmental impacts of the pulp and paper industry, the transportation of detrimental substances in different flows and process units were measured and modelled, and new solutions of non-waste technology were developed for closed water cycles in pulp mills, for the use of green liquor sludge and ash and for the recovery of ash from the combustion of deinking sludge and waste paper. In peat production, new methods and instructions were developed and introduced for the control of drainage waters and for dust emissions and noise problems. After-use alternatives for exhausted peat production fields were also studied. Due to the interdisciplinary approach, the SIHTI Programme has disseminated information about research results as widely as possible. The Annual Seminars of the Programme, and sessions on environmental impacts of emissions from energy production, separation of particulates, and utilisation of solid wastes have offered excellent opportunities to the lecturers and to the audience to bring their own contribution to the issue occupying our mind: what would be the right way of approaching sustainable energy production.