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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Firm Generates Foreign Interest – Daily Echo
A PIONEERING engineering company is manufacturing equipment that reduces waste and creates green electricity. Already working with Formula 1 teams, it is now attracting foreign interest.
AeroThermal, which employs 10 staff in Poole, has developed and built a pre-treatment process that can divert 70 per cent of the rubbish from landfill. Known as the Autoclave system, a single unit can process a 30-tonne batch of waste in two hours.
Managing Director Ian Toll said ‘’AeroThermal has provided design and manufacture of large process systems for over 30 years to clients such as Airbus, Boeing, the MOD and 80 per cent of Formula 1 teams. With the increasing awareness of environmental issues, the company decided to use its process expertise to develop waste handling systems which treat the materials as an as-yet untapped resource rather than a problem’’.
Spain has heard about the system, which costs in excess of £150,000. The Mayor of Velez-Malaga, D Francisco I Delgado Bonilla, has visited the company with a view to purchasing the technology so that the Cost Del Sol and Velez-Malaga van be greener. The autoclave acts like a steam pressure cooker, rendering material sterile. Food, paper and packaging are reduced to their basic form.
Once the pressure cycle has completed and all disposable waste has been reduced, steam is released and converted back to water without any adverse gases being released into the atmosphere. By applying a sorting process, metals, plastics and glass can be recycled and reused. When the remaining material is subjected to anaerobic digestion – a further natural process – it yields biogas which is converted into green electricity.
Some of this electricity it used to power the plant and the remainder can be sold back into the national grid.