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=ASIA6AP2G7AKOU4VLE2J%2F20260218%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20260218T205709Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKD%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaDGV1LWNlbnRyYWwtMSJGMEQCIElm37I2edoD4q5bPpRaf%2FLndxDpdyCuUIxxyAvpzI4HAiBKCGlYkMaeNke%2FhDWDqk56OHYz%2BYm91oIIj9tUlW%2FNEyq9BQhqEAIaDDk2MzEzNDI4OTk0MCIMj%2Fy%2BxVXPYparhtwQKpoFL447FvGREmXCz18nDaDMCBQisAWsFC2r3Qnj9zQoKFeQPnBlZkvEoFEkUSqjh8BsFufHCCHLQqZoihCMA1KSqkZ%2F5WlDBL2WceHXdsG2QYMVZyQQeIt25XtJOKf1c1YXtm6RRKFH%2BoJ%2FQhXjyUdXtyL3%2FiygrvRyQ02i3R3Fsv2fzcB8MHZAW5Fvn9eMPgEOKIvOfInPZC%2BOwA%2FKRbnb07ks4cQeEikCoDE%2FlGBh3XfqAGaFxVhn3GMkYFHuEQl%2F2LBXpInC24ukcgmfdJwK4M3X4R5EIKVWauT%2BReXrTg4xSggJy1juhidM%2FHaHH5repoIIrbQuy8yGuIomE%2B%2F6663tFICBEVV708K%2FDZRDDo32EK4tKsEWxPVBPzhcqD5zZZ8ROf3u1APTDUgKTutUoIXMp7KItOaxT%2FCfJqlSl8n40je0ZrsPbqBrN80qf1I9YmMgT4fC2%2FprVZ8tm1iSsFLgRY%2FrFo5aCQlrviS7BI9mH%2FnAQqx7VGDtu1VRTd3avlLZceKmzWuVdTV9pApUSvsOnR5aM15v3kcH4BFFIm%2Be4ddGi8kdItCdZovnbY4J%2BzOxafj3jPOvF8gKdRiumMqSvEkMguRZdbcq29mRuYyPGE1loVNgKn09lAE%2BRiF%2BCMmcUYNg0FpYzD3bG6U%2B6J9ygLcj42f1wbaJSSuxhvjd%2BA8R09eJOIGKor4UdGisBngToDzru5gWCzMORM9YVzFgLIHYyc9ltCwEQ6AicZ5BQCbIvnVd%2FB%2BoaFgpm6wM%2BGsf%2FZrWX64P9Y%2BOPddOUDHW%2FYGMMQaJ6Gdm9KHtkyXXbqYRa8ErD8rh8AxRzG9q8%2B2ZsnN7sHLo3AwvAcKDq4J7crAfXdDcD2MJHQKqvjc%2BUvH%2FZClZdK4XMMvO18wGOrIB9vHzov7JWvySryjguCJT2m3gA3pC9L7RJwyVWH9LRkeSRsEW0nAcZ1f2pS3ksfS8GO3bhtst7l%2FUpl%2FVTAoziUv00dloAigEm%2BYMQYMy5%2BE81reGtiNR0G1%2F1CJtgevsN7kpd5QTA79wuNm6iEu3Wx7LCmO0woHW2FGKVnpxcGg14VicNdMQjC2jc%2BZaK9aVwH9sKzKbC1loEGp3vr4FBHl6DJu%2FAr6nN0NN%2BGGmYmEs7A%3D%3D&X-Amz-Signature=762a6320ee04b5862821f7d61292e91b77da8ac687f05b7ae41959f0249d7136&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=ASIA6AP2G7AKOU4VLE2J%2F20260218%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20260218T205709Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKD%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaDGV1LWNlbnRyYWwtMSJGMEQCIElm37I2edoD4q5bPpRaf%2FLndxDpdyCuUIxxyAvpzI4HAiBKCGlYkMaeNke%2FhDWDqk56OHYz%2BYm91oIIj9tUlW%2FNEyq9BQhqEAIaDDk2MzEzNDI4OTk0MCIMj%2Fy%2BxVXPYparhtwQKpoFL447FvGREmXCz18nDaDMCBQisAWsFC2r3Qnj9zQoKFeQPnBlZkvEoFEkUSqjh8BsFufHCCHLQqZoihCMA1KSqkZ%2F5WlDBL2WceHXdsG2QYMVZyQQeIt25XtJOKf1c1YXtm6RRKFH%2BoJ%2FQhXjyUdXtyL3%2FiygrvRyQ02i3R3Fsv2fzcB8MHZAW5Fvn9eMPgEOKIvOfInPZC%2BOwA%2FKRbnb07ks4cQeEikCoDE%2FlGBh3XfqAGaFxVhn3GMkYFHuEQl%2F2LBXpInC24ukcgmfdJwK4M3X4R5EIKVWauT%2BReXrTg4xSggJy1juhidM%2FHaHH5repoIIrbQuy8yGuIomE%2B%2F6663tFICBEVV708K%2FDZRDDo32EK4tKsEWxPVBPzhcqD5zZZ8ROf3u1APTDUgKTutUoIXMp7KItOaxT%2FCfJqlSl8n40je0ZrsPbqBrN80qf1I9YmMgT4fC2%2FprVZ8tm1iSsFLgRY%2FrFo5aCQlrviS7BI9mH%2FnAQqx7VGDtu1VRTd3avlLZceKmzWuVdTV9pApUSvsOnR5aM15v3kcH4BFFIm%2Be4ddGi8kdItCdZovnbY4J%2BzOxafj3jPOvF8gKdRiumMqSvEkMguRZdbcq29mRuYyPGE1loVNgKn09lAE%2BRiF%2BCMmcUYNg0FpYzD3bG6U%2B6J9ygLcj42f1wbaJSSuxhvjd%2BA8R09eJOIGKor4UdGisBngToDzru5gWCzMORM9YVzFgLIHYyc9ltCwEQ6AicZ5BQCbIvnVd%2FB%2BoaFgpm6wM%2BGsf%2FZrWX64P9Y%2BOPddOUDHW%2FYGMMQaJ6Gdm9KHtkyXXbqYRa8ErD8rh8AxRzG9q8%2B2ZsnN7sHLo3AwvAcKDq4J7crAfXdDcD2MJHQKqvjc%2BUvH%2FZClZdK4XMMvO18wGOrIB9vHzov7JWvySryjguCJT2m3gA3pC9L7RJwyVWH9LRkeSRsEW0nAcZ1f2pS3ksfS8GO3bhtst7l%2FUpl%2FVTAoziUv00dloAigEm%2BYMQYMy5%2BE81reGtiNR0G1%2F1CJtgevsN7kpd5QTA79wuNm6iEu3Wx7LCmO0woHW2FGKVnpxcGg14VicNdMQjC2jc%2BZaK9aVwH9sKzKbC1loEGp3vr4FBHl6DJu%2FAr6nN0NN%2BGGmYmEs7A%3D%3D&X-Amz-Signature=2aa89fcd3b7c19596079d5c67315bd0938b4fdb93e4894727788a4ff54248384&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 | |