Recovery of Bottom Ash, HCL, Gypsum, Ferrous and Non Ferrous Metals.

The Importance of Material Recovery:

Below graphics show the Greenhouse effect comparing land filling, ATR (WTE) and MBT: The higher the production and utilization of energy and end products the higher the environmental relevance: kg- CO2- equivalent/ t residual waste:

                         Landfilling      ATR           MBT           ©WRSI/BASF

This diagram is taken from the BASF Study “Eco - efficiency analysis - BASF”. It clearly shows that ATR (Advanced Thermal Recycling) by simply turning the waste into reusable end-products (without even considering the energy recovered) has a greater positive impact on GHG reduction than land filling with energy recovery. In the original ATR is shown as WTE. ATR is the most advanced, state of the art proven technology that developed out of the WTE concept.

During the process of turning waste into energy 99% of the MSW is transformed into commercial end products. The products produced through the GCS proposed process include ferrous and non-ferrous metals for recycling, hydrochloric acid @ 30% or higher, gypsum more pure than mined gypsum, mixed salts and bottom ash for numerous construction applications. The result is an incredibly clean Thermal Recycling process.

Bottom Ash:

Schlacke & Schrott: Distribution Center for Bottom Ash and Metals ©WRSI/HSK

Bottom Ash Aging Hall (3 months) ©WRSI/HSK

Bottom Ash up close ©WRSI/HSK

Samples of Bottom Ash by Size (for different applications) ©WRSI/HSK

Road Construction with Bottom Ash (Bearing Layer) ©WRSI/HSK

450,000 metric tons serve as the Bearing Layer for most modern Container Terminal in the World with an annual throughput of 3 million+ TEUs ©WRSI/HSK

Bottom Ash used as Bearing Layer for Shopping Mall ©WRSI/HSK

Bottom Ash – A Safe Product for the Construction Industry ©WRSI/HSK  

Bottom Ash just a Dream? By Dr. Heiner Zwahr:

In the Hamburg area, more than 200,000 tons 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.

Read Entire Paper, click here. 

HCL Production: