Ash Recycling: Just a Dream ?

摘要

In the Hamburg area, more than 200,000 tonnes of bottom ash are recycled annually as construction material. It is important though to treat bottom ash properly to obtain a marketable product. Chemical properties and constructional characteristics have to comply with environmental and constructional standards or guidelines if bottom ash is to be used beneficially. New developments are underway to broaden the fields of application for treated bottom ash and to improve the economics of recycling bottom ash. This will be a further step in the development of waste to energy as part of a sustainable waste management.