Efficiency of waste processing in the MBT system

2020

Materials

Self Cite

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.

Section: Methodsmentioning

confidence: 99%

Potential of Mineral Fraction in Compost-Like-Output, Methods of Its Obtaining and the Possibility of Using It in the Context of Circular Economy

Połomka¹,

2020

Materials

Self Cite

“…Stage One -intensive stabilization of waste in reinforced concrete bioreactors, with full automatic control of its course, duration: 3 weeks. Stage Two -maturing of waste in piles laid out in the open air for a period of 10-12 weeks, coupled with waste transfer [14]. Following the intensive stabilization, the waste was sent for research.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

“…The end product (stabilizer) is disposed of in a landfill. The total throughput capacity of installations using other technologies for the OFMSW stabilization (including methane fermentation) did not exceed 5% [14]. Through provisions in Poland's new Act on Maintaining Cleanliness and Order in Municipalities (Article 3b (1)) (Journal of Laws 2012, item 391) [5] and in the Regulation on Recycling of Waste (Journal of Laws 2012, item 645) [6], the country chose the second variant of calculating the rate of recycling and preparation for reuse of paper, metals, plastics and glass.…”

Section: Introductionmentioning

confidence: 99%

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Recovery of Stabilizer Glass in Innovative MBT Installation—An Analasys of New Technological Procedure

Połomka¹,

Myszograj

2020

Materials

Self Cite

The data published by the European Container Glass Federation shows that the EU28 average collection rate for recycling of glass containers has grown to a rate of 76%. However the stabilizer produced at mechanical-biological treatment (MBT) installations at landfills still contains large amounts of recyclable glass. An industrial-scale study has been undertaken in order to assess the possibility of recovering this glass from the stabilizer. A new pilot installation was built at the MBT plant in Marszów, Poland. Tests were conducted on stabilizer samples produced at the plant (13 samples) and others collected from several MBT plants based in Poland (six samples). Processing the stabilizer on the designed line made it possible to recover on average 68.4 ± 7.0% of the glass contained in it from Marszów samples and 58.4 ± 14.2% in the case of samples acquired from other MBT installations. It is demonstrated that the concentrate quality largely depends on the stabilizer’s moisture content. A concentrate with glass content from 98.0% to 99.5% was obtained for samples of low-moisture stabilizers (for 14 out of 19 samples). The product was accepted by glass recycling plants due to its low level of contamination with other materials and its appropriate particle size.

“…For example, in Poland at the end of 2016, there were 192 MBP installations with a capacity of about 11 million Mg of waste per year. The total throughput of methane fermentation installations did not exceed 200.000 tpy, although this method has a number of benefits compared with composting [8].…”

Section: Introductionmentioning

confidence: 97%

RDF from Compost-Like-Output’s Produced in the MBT Installation in the Case of Marszów, Poland

Połomka¹,

2020

Energies

Self Cite

At most of the installations for the mechanical and biological treatment of waste operated in Poland, the 0–80 mm fraction, separated from the municipal waste stream, are completely stored after biostabilization. Such an action does not fit into the EU strategy focused on circular waste management. The purpose of this study was to assess the technical feasibility of recovering the mineral fractions contained in the compost-like-output (CLO) on a technological line designed for glass recovery. The research started in January 2019, lasted for the next 12 months, and covered 29 measurement series. The following two high-energy fractions were separated from the CLO: 10–35 mm light fraction after separation in the air separator (M-1) and 35–80 mm light fraction after separation in the air separator (M-2). The stabilization processing on the glass recovery line allowed for the recovery of two high energy fractions in the total amount of 24.5% of the processed, and it stabilized the product’s mass. In terms of materials, the M-1 and M-2 wastes were a mixture of organic, paper, and plastic materials. Under the Refuse Derived Fuel (RDF) classification, according to the European Committee for Standardization, the tested waste fell within the following classes: waste M-1: 4NCV2Cl4Hg and M-2: 4NCV1Cl4Hg.