A Comparison of two Biological Treatment Processes for Residual Waste Management

The paper presents a technology comparison of MBT Anaerobic Digestion and MBT biodrying for treatment of residual municipal waste.

Specifically the paper enables a strategic decision to be made on the optimal deliverable residual waste management solution for municipal waste contracts where the generation of an SRF, either as an element of the overall solution or as a contract output is required. Both technologies have been proposed as precursors for SRF production in recent UK municipal waste management contracts. The most important factors in the evaluation of municipal waste tenders are project cost followed by landfill diversion and deliverability. The analysis indicates that the AD solution offers the potential to achieve the highest landfill diversion performance however they tend to exhibit higher lifecycle project costs than biodrying solutions. Furthermore AD solutions suffer against deliverability primarily because of the lower calorific content of the SRF and the implications that this may have on securing long term markets. MBT biodrying solutions do not exhibit the highest landfill diversion performance and the quality of recyclates can be problematic due to contamination issues. However where a concept can be developed based on only metals and dense plastics recycling and where the fines fraction can be incorporated with the SRF, then MBT biodrying would appear to offer a deliverable solution exhibiting a competitive cost and offering a high level of deliverability. The paper concludes with the Author’s overview of the preferred technology against a given range of parameters.

Copyright: © Wasteconsult International
Quelle: Waste-to-Resource 2011 (Mai 2011)
Seiten: 12
Preis inkl. MwSt.: € 6,00
Autor: Tony Yates

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