Waste Autoclaves
AeroThermal's autoclave is a pressure vessel that steam treats its contents at a constant temperature and pressure, serving to sterilise, clean, break-down lignin structures and reduce waste volume by approximately 60%. Then, by applying a secondary process the true added value of the autoclave can be realised. These qualities can not only serve to increase landfill diversion rates, but if the process by-product, cellulose floc, is used to its full advantage, clean, green energy can be derived from waste.
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Gasification
The EnviroThermal fixed bed gasifier is an innovative design that utilises a revolutionary multidirectional airflow. The system is currently being rigorously tested under University conditions and a small demonstration prototype will soon be available in Poole, Dorset.
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Anaerobic Digestion
Anaerobic Digestion (AD) is the preferred stabilisation process for the treatment of wastewater sludge and organic wastes. The process provides volume and mass reduction and delivers valuable renewable energy with biogas production. Anaerobic digestion is a simple process that can greatly reduce the amount of organic matter that might otherwise be destined for landfill or burnt in an incinerator.
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Scottish news of the MRW conference
Yvonne Rollins, senior projects adviser with the Scottish government reviews the latest ‘autoclave’ recycling technology with Ian Toll (right) and Christian Toll of innovations technology company AeroThermal of Poole in Dorset.
Ms Rollins, addressing delegates attending the Waste Management conference at the Crown Plaza Hotel in Glasgow, emphasised the Scottish Government’s commitment to a total zero waste strategy for the country, with objectives of reaching a 75% recycling target of municipal and business waste by 2025.
The Scottish Government has established a think tank to develop a national waste plan for Scotland that aims to develop a complete zero waste strategy for the country.
Its immediate objectives are to reduce the amount of household waste going to landfill by 5% and increasing recycling and composting of waste by 40% in the next three years and by 70% by 2025. Formed this year, the Think Tank also aims to increase the energy recovered from waste to 25% and restrict the growth of the amount of waste generated within the country.
Speaking in Glasgow at a national waste management conference – Maximise recycling and minimise waste in Scotland -, Yvonne Rollins, senior projects adviser at the Scottish government said that the SNP-led administration was committed to substantial waste recycling objectives that would take Scotland to amongst the top three recycling countries in Europe.
She said: ‘’We continue to review of national waste plan as part of the planning framework and see the need to reduce the amount of waste we send to landfill, despite Scotland generating less waste per head of population that countries such as Denmark.
‘’Energy from waste can make a valuable contribution to Scotland’s energy needs and to the climate change challenges we face.
‘’We are aiming, over the next 15 years, to be where Germany and Austria are now in their waste management achievements.’’
Currently, Scotland recycles just over 31% of its waste which is third bottom of the European list of countries. Only Greece and Portugal recycle less than Scotland.
Ms Rollins continued: ‘’ the environmental impact of our production and consumption is considerable and it is our intention to reduce substantially the amount of waste we send to landfill by 2010. We will be establishing concordats with Scotland’s Local Authorities who will be required to reach an outcome agreement with the Scottish government by June of this year.
‘’The Scottish government is committed to monitoring and recording how well the country is performing in its waste objectives. We have to look at waste as a resource and not simply a disposable commodity.’’
Seven Local Authorities across Scotland will be soon implementing trials for household food waste collection, testing the effectiveness of such collections systems.
Over the next three years, the Scottish government intends to spend £154 million in a number of waste recycling programmes aimed at ensure the country meets its European waste management obligations. A joint government and Convention of Scottish Local Authorities (coSLA) group is currently examining funding requirements to meet a zero waste strategy.