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New Approach for Calculation of Recycling Rates of Municipal Waste in the Circular Economy (CE)


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Figure 1.

Investment gap and investment outlays in the treatment of municipal waste. Source: Own study based on data from KPGO 2022 [18]
Investment gap and investment outlays in the treatment of municipal waste. Source: Own study based on data from KPGO 2022 [18]

Figure 2.

Tendency of changes in the recycling rate [%] in the adopted variants. Source: Own study
Tendency of changes in the recycling rate [%] in the adopted variants. Source: Own study

Recycling rates [%] in the analyzed scenarios in two variants

Description Large municipalities Recycling rate [%] Medium municipalities Recycling rate [%] Small municipalities Recycling rate [%] Average value of the recycling rate [%]
Scenario number Variant Number
Scenario 1 Variant I 12.96 15.08 12.22 13.42 16.65
  Variant II 18.48 21.20 19.94 19.87
Scenario 2 Variant I 21.74 17.37 16.52 16.52 22.95
  Variant II 31.03 24.12 26.90 26.90
Scenario 3 Variant I 29.38 33.12 18.26 18.26 33.55
  Variant II 42.72 47.99 29.81 29.81

Summary of scenarios and determination of the patterns of the recycling rate in the developed variants

Scenario number Scenario description Determining the pattern – variant I Determining the pattern – variant II
Scenario 1 the recycling rate is calculated as the ratio of the weight of paper, metal, plastic and glass (PMPG) prepared for re-use and recycling to the weight of total municipal waste generated p=MrpmpgMwREAL×100% where:P – level of preparation for re-use and recycling of municipal waste, %,Mrpmpg – total mass of paper, metal, plastic and glass waste prepared for re-use and recycling, Mg,MwREAL – total mass of generated (collected) municipal waste, Mg p=MrpmpgMwCSO×100% where:P – level of preparation for re-use and recycling of municipal waste, %,Mrpmpg – total mass of paper, metal, plastic and glass waste prepared for re-use and recycling, Mg,MwCSO – total mass of generated municipal waste, Mg
Scenario 2 the recycling rate is calculated as the ratio of the weight of paper, metal, plastic and glass waste prepared for re-use and recycling, and bio-waste transferred to the recycling process (input into the recycling process) to the total weight of municipal waste generated p=Mrpmpg+BIOMwREAL×100% where:P – level of preparation for re-use and recycling of municipal waste,%, Mrpmpg+BIOrec – total weight of paper, metal, plastic, glass and recycled bio-waste, Mg,MwREAL – total mass of generated (collected) municipal waste, Mg p=Mrpmpg+BIOMwCSO×100% where:P – level of preparation for re-use and recycling of municipal waste, %,Mrpmpg+BIOrec – total weight of paper, metal, plastic, glass and recycled bio-waste, Mg,MwCSO – total mass of generated municipal waste, Mg
Scenario 3 the recycling rate is calculated as the ratio of the weight of paper, metal, plastic and glass waste and bio-waste collected and collected selectively in municipal waste management systems to the total weight of municipal waste generated p=Mrsel(pmpg+BIO)MwREAL×100% where:P – level of preparation for re-use and recycling of municipal waste, %,Mrsel(pmpg+BIO) – total mass of separately collected waste paper, metals, plastics, recycled glass and bio-waste, Mg,MwREAL – total mass of generated (collected) municipal waste, Mg p=Mrsel(pmpg+BIO)MwCSO×100% where:P – the level of preparation for re-use and recycling of municipal waste, expressed in %,Mrsel(pmpg+BIO) – total mass of separately collected waste paper, metals, plastics, recycled glass and bio-waste, Mg,MwCSO – total mass of generated municipal waste, Mg

Recycling rates [%] in the analysed scenarios according to two variants for GMK in 2018-2020

Description 2018 2019 2020
Recycling levels achieved by the City of Krakow 42.00 55.92 69.49
Scenario number Variant Number Recycling rate [%] Recycling rate [%] Recycling rate [%]
Scenario 1 Variant I 12.78 14.04 17.35
  Variant II 20.92 22.88 26.91
Scenario 2 Variant I 18.14 19.67 27.52
  Variant II 29.69 32.05 42.66
Scenario 3 Variant I 32.20 34.26 40.55
  Variant II 52.71 55.83 62.88
eISSN:
2720-6947
Sprache:
Englisch
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Architektur und Design, Architektur, Architekten, Gebäude