Abstract
Most of the systems for the mechanical and biological treatment of waste used in Poland send the 0–80 mm fraction separated from the municipal waste stream, after biostabilization, entirely to a landfill. Such action is not in line with the adopted EU strategy focused on waste management in the circular cycle. The purpose of this work was to assess the technical feasibility of recovering the mineral fractions contained in compost-like-output (CLO) on the proprietary technological line designed for glass recovery. The research was launched in January 2019, and lasted for a subsequent 12 months. In the article, the amounts of mineral fractions possible to be separated from CLO are presented, as well as their morphological composition and selected properties being determined. The processing of CLO on the line allowed to recover on average 69.4 ± 7.0% of the glass. This product was accepted by glass recycling plants. Mineral fractions constituting waste from the glass separation process were tested for their use in winter road maintenance. Tests were also carried out confirming the possibility of using selected mineral fractions (0–10 mm) from CLO to obtain a waste cement mix useful for constructing road foundations using a standard amount of cement.
Highlights
In order to achieve the objectives of Directive 1999/31/EC in the area of reducing the amount of biodegradable waste disposed of in landfills at the beginning of the current century, the technology of mechanical and biological waste treatment (MBT) was developed [1,2]
About 570 MBT systems with the processing capacity of 55 million tons of MSW were operated in Europe
The purpose of this work was to assess the technical feasibility of recovering mineral fractions contained in CLO on a process line designed for the purpose of glass recovery, using processes commonly used in MBT systems
Summary
In order to achieve the objectives of Directive 1999/31/EC in the area of reducing the amount of biodegradable waste disposed of in landfills at the beginning of the current century, the technology of mechanical and biological waste treatment (MBT) was developed [1,2]. This technology, focused on the biological stabilization of the organic fraction of municipal solid waste (OFMSW) before storage or for the preparation of MSW for combustion with energy recovery, has played a key role in the system of economy of MSW in Poland and in many other EU countries to this day [2]. It was stated that the market position of MBT technology will continue to be strong in the coming years, the pace of construction of these systems will clearly decrease [3]
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