Comparison of the catchment area, design capacity, yearly thawing road-salt loads and PE-specific road salt loads for the three WWTPs considered
| WWTP . | Catchment area . | Design . | Yearly . | Yearly . | PE-specific road-salt load . |
|---|---|---|---|---|---|
| Structure . | Capacity . | road-salt events . | road-salt load . | from winter maintenance . | |
| – . | PECOD . | 1/y . | t NaCl/y . | kg NaCl/(PE · y) . | |
| A | Urban | 4 million | 7.5 | 2,004 | 0.50 |
| B | Urban/rural | 950,000 | 10 | 249 | 0.26 |
| C | Rural | 110,000 | 12 | 46 | 0.42 |
| WWTP . | Catchment area . | Design . | Yearly . | Yearly . | PE-specific road-salt load . |
|---|---|---|---|---|---|
| Structure . | Capacity . | road-salt events . | road-salt load . | from winter maintenance . | |
| – . | PECOD . | 1/y . | t NaCl/y . | kg NaCl/(PE · y) . | |
| A | Urban | 4 million | 7.5 | 2,004 | 0.50 |
| B | Urban/rural | 950,000 | 10 | 249 | 0.26 |
| C | Rural | 110,000 | 12 | 46 | 0.42 |