Figure 1.
![Investment gap and investment outlays in the treatment of municipal waste. Source: Own study based on data from KPGO 2022 [18]](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/6470707b83f1392090d6986a/j_acee-2021-036_fig_001.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=ASIA6AP2G7AKC3522UWU%2F20251212%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251212T140050Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEDkaDGV1LWNlbnRyYWwtMSJHMEUCIQC%2BQfKW5N5JBG%2FGTUK1Ddg%2BFHMy7CCph8HJvJRHrnwxLQIgOanKEyn9%2Bo1M2Ux%2FTqFXNo9GIguZfSvTxkZ4ODONHxwqvQUIAhACGgw5NjMxMzQyODk5NDAiDNmcz7mmWd%2ByHyWFXSqaBca2WeDmL0ylQGyAwWbHkxwYhnn9qCr3dXNfeV1UIGFwVVXFTW9J0x8l%2FobHjabimJrNoiuSio73%2BzbZwW7rlyRJpDeiY62uzWn7Tmm2A%2FAy2ChDr%2F%2B0u3rkWr3S9CD2%2Fh0cVlBCMPZCpxTK%2BJbHZoB%2F6TREBwts2XG%2BYOs7rW4fuPBfTFW22LKpXf1SxdA2BCkpcI4mat9907otV0ZLop9qCyCiF%2Belg7JccCC4fiHUITG9%2B4EXhCxvU9qYIDmgXFJaGkjfuwLJSxOPZ72u8vIXlpigJlR%2BDsPEy7VaJc3hoLumUK0wfKkKK9GSrx4tjtDEEa3m%2B2rgq9CISYMqLl2JR9DhBdoXf%2Fw%2F88rw%2FkFmW0ZDaff8WZpKafbCny5KHm4VD8uQvc6GMxULMI319N33AtRNeHv68PkBHXtiaCr9CHT30Pu4TL%2BYuEF%2BJHiBUQm3dSXnZ0MUoBA6F3fMcpeYUjXIuObf%2B2FKiY4rdKxDA%2BQ%2BpL6P2vgyhH7Pfmjn7S1H0yO%2B8bHWSHXSObzpezY1aPFowyWgn9QKjiYKfqZvCltLTUko1QQCj2zsNwVJnyL3RCME0E906K5n4fTgMz0hXegLW69MrNNg0dn4jPNN8cL5mS0D9Ge0qw4rVmZxgDRxWeRr0lzCUC3QXGN3rFchBIKCcUAL7P7UEGam5E2xOvgrDRJChfS6EODwMtnGY06xvELPC0KqQSZnXbpkMIKt1JIv1U5do%2BYE0uqEtU2Y%2Fgifb2a7MmdHpD%2BOZt4t8%2FjtryZCOXrayOsc7KoeBucESjdSsIWpBbOuSFJyIII4ck9TM2jnxmdjYlNtxWBOlLmmDka4y0stOlQz192O3eaipUWYvBLMtZnOnfMEF741RWEGFOQ2b0TwqDCer%2B%2FJBjqxAW4NnZodJUXY96PxpqFzqL6n1pL8JT2lQ4LVr8c4pftcXMAU7ouVfyQPSgVc2lwaSxkXUBj21zT50VxNK4fHtlyFFz4Lz3DTQCYNH%2BCq3PGxqXLTIN170tnl0CApuctAJHBWAwXJya3ZyxeI170LibMcV5TVp4DEYWKlKW7Ltn0zkR3ZFEL58x4ngXcc0qizg9%2FuxM3%2F1uhkmatbLC2l3IA6Io3jpmtXzXmvB%2FDe4Ls77w%3D%3D&X-Amz-Signature=02d7515ae71ae9fb2570de63ef2ec2017cdfdd4b8fd6430aa45fa1666021f954&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Figure 2.
![Tendency of changes in the recycling rate [%] in the adopted variants. Source: Own study](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/6470707b83f1392090d6986a/j_acee-2021-036_fig_002.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=ASIA6AP2G7AKC3522UWU%2F20251212%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251212T140050Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEDkaDGV1LWNlbnRyYWwtMSJHMEUCIQC%2BQfKW5N5JBG%2FGTUK1Ddg%2BFHMy7CCph8HJvJRHrnwxLQIgOanKEyn9%2Bo1M2Ux%2FTqFXNo9GIguZfSvTxkZ4ODONHxwqvQUIAhACGgw5NjMxMzQyODk5NDAiDNmcz7mmWd%2ByHyWFXSqaBca2WeDmL0ylQGyAwWbHkxwYhnn9qCr3dXNfeV1UIGFwVVXFTW9J0x8l%2FobHjabimJrNoiuSio73%2BzbZwW7rlyRJpDeiY62uzWn7Tmm2A%2FAy2ChDr%2F%2B0u3rkWr3S9CD2%2Fh0cVlBCMPZCpxTK%2BJbHZoB%2F6TREBwts2XG%2BYOs7rW4fuPBfTFW22LKpXf1SxdA2BCkpcI4mat9907otV0ZLop9qCyCiF%2Belg7JccCC4fiHUITG9%2B4EXhCxvU9qYIDmgXFJaGkjfuwLJSxOPZ72u8vIXlpigJlR%2BDsPEy7VaJc3hoLumUK0wfKkKK9GSrx4tjtDEEa3m%2B2rgq9CISYMqLl2JR9DhBdoXf%2Fw%2F88rw%2FkFmW0ZDaff8WZpKafbCny5KHm4VD8uQvc6GMxULMI319N33AtRNeHv68PkBHXtiaCr9CHT30Pu4TL%2BYuEF%2BJHiBUQm3dSXnZ0MUoBA6F3fMcpeYUjXIuObf%2B2FKiY4rdKxDA%2BQ%2BpL6P2vgyhH7Pfmjn7S1H0yO%2B8bHWSHXSObzpezY1aPFowyWgn9QKjiYKfqZvCltLTUko1QQCj2zsNwVJnyL3RCME0E906K5n4fTgMz0hXegLW69MrNNg0dn4jPNN8cL5mS0D9Ge0qw4rVmZxgDRxWeRr0lzCUC3QXGN3rFchBIKCcUAL7P7UEGam5E2xOvgrDRJChfS6EODwMtnGY06xvELPC0KqQSZnXbpkMIKt1JIv1U5do%2BYE0uqEtU2Y%2Fgifb2a7MmdHpD%2BOZt4t8%2FjtryZCOXrayOsc7KoeBucESjdSsIWpBbOuSFJyIII4ck9TM2jnxmdjYlNtxWBOlLmmDka4y0stOlQz192O3eaipUWYvBLMtZnOnfMEF741RWEGFOQ2b0TwqDCer%2B%2FJBjqxAW4NnZodJUXY96PxpqFzqL6n1pL8JT2lQ4LVr8c4pftcXMAU7ouVfyQPSgVc2lwaSxkXUBj21zT50VxNK4fHtlyFFz4Lz3DTQCYNH%2BCq3PGxqXLTIN170tnl0CApuctAJHBWAwXJya3ZyxeI170LibMcV5TVp4DEYWKlKW7Ltn0zkR3ZFEL58x4ngXcc0qizg9%2FuxM3%2F1uhkmatbLC2l3IA6Io3jpmtXzXmvB%2FDe4Ls77w%3D%3D&X-Amz-Signature=da4e8efbb55b6d5a6d9eb68551ad611343eb26babc2ce5362b4aa62bc2d8f852&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
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 | ||
| 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 | ||
| 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 |
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 | |