Level of fulfilment of commercial quality standards according to service

Average annual concentrations at the main plants (2017)
mg/l Body of water receiving the treated wastewater COD (limit: 125 mg/l) BOD5 (limit: 25 mg/l) TSS (limit: 35 mg/l) Ammoniacal nitrogen (limit: 15 mg/l) Volumes treated (thousands of m3)
Bologna IDAR* Navil canal 28.2 6.3 8.3 0.0 39,580
Anzola (BO) Scolo Sanguinettola Bassa or Scolo Lavinello 29,0 7,6 8,2 0,0 1,323
Calderara (BO) Scolo Dosolo 34.0 7.0 7.1 0.0 975
S. Giovanni (BO) River Reno and San Giovanni Canal 38.0 12.4 13.4 0.0 172
Ferrara Gramicia Po di Volano 56.0 15.2 24.6 4.0 16,895
Cesena Rio Granarolo 21.4 10.0 25.0 1.8 6,530
Cesenatico (FC) Scolo Madonnina 57.5 11.5 14.4 1.6 3,931
Forlì Scolo Cerchia 24.4 10.0 6.8 1.9 14,249
Savignano (FC) River Rubicone 28.2 10.5 9.4 3.6 5,184
Faenza Formellino (RA) River Lamone 46.8 12.3 12.0 1.3 4,728
Imola Santerno (BO)* River Santerno 35.0 8.7 40.0 0.0 6,181
Modena aviglio Canal 17.7 5.1 5.9 0.5 31,521
Ravenna Cupa and Scolo Fagiolo Consortium canal 34.8 10.6 10.6 3.4 16,727
Alfonsine (RA) Scolo Sabbioni 29.4 10.7 13.6 1.3 1,506
Bagnacavallo (RA) Scolo Cappuccine 22.7 10.0 8.5 2.4 1,433
Cervia (RA) Cupa Consortium canal 34.4 10.5 10.0 1.9 5,131
Lido di Classe (RA) Pergami Canal 27.9 10.3 15.4 2.8 743
Lugo (RA) Scolo Arginello 35.9 10.6 9.2 1.8 6,281
Marina di Ravenna (RA) Scolo Piombone 28.2 10.5 16.2 1.6 798
Russi (RA) Scolo Pisinello 24.0 10.1 9.0 3.9 783
Rimini S. Giustina River Marecchia 24.1 10.0 7.6 3.1 30,622
Riccione (RN) Rio Marano 39.0 11.5 10.7 3.1 5,201
Cattolica (RN) Torrente Ventina 21.8 10.4 9.9 2.8 6,257
Pesaro Borgheria (PU) River Foglia 25.0 7.0 7.0 2.3 6,004
Ca’ Nordio (PD) Roncajette Canal 12.1 9.4 4.9 0.9 21,422
Guizza (PD) Scolo Amolari 13.1 9.1 5.0 1.4 1,123
Abano Terme (PD) Scolo Rialto 17.1 9.1 4.2 1.1 2,269
Codevigo (PD) River Brenta 18.5 9.1 5.0 1.4 3,565
Zaule (TS) Gulf of Trieste 31.2 8.3 14.9 0.4 9,982
Servola (TS) Gulf of Trieste 98.8 32.0 35.0 17.9 31,724
Total volume treated           282,838

The volume treated by the 33 plants listed in the table covers 77% of the total wastewater treated.
*Bologna’s plant limits are different from the regulation: COD 160 mg/l; BOD5 40 mg/l; SST 80 mg/l; ammoniacal nitrogen 25 mg/l. For the Imola plant, where there is a final lagoon, the TSS limit is 150 mg/l.

Volumes treated in the main plants (thousands of m3)
Body of water receiving the treated wastewater 2015 2016 2017
River 168,438 160,967 149,794
Channel 108,937 102,385 91,338
Sea 41,514 41,250 41,706
Total 318,890 304,602 282,838

The volume treated by the 33 plants listed in the table covers 77% of the total wastewater treated.

Concentrations of atmospheric emissions from waste-to-energy plants (2017)
mg/Nm3 Regulatory limits pursuant to Legislative Decree 133/2005 Bologna (lines 1 and 2) Faenza (Enomondo) Ferrara (lines 2 and 3) Forlì (line 3) Modena (line 4) Ravenna (WDF) Ravenna (special waste integrated platform) Rimini (line 4) Pozzilli (Isernia) Padova (lines 1 and 2) Trieste (lines 1, 2 and 3)
Particulates 10 1.1 0.62 0.1 0.6 0.6 0.5 0.2 0.4 0.1 0.8 1.2
Hydrochloric acid 10 0.6 3.18 0.7 2.8 2.4 0.8 0.1 2.8 4.9 0.5 0.4
Nitric oxide 200 83.8 47.31 46.5 47.8 52.7 135.3 80.1 60.5 150.9 52.1 150.9
Sulfur oxides 50 0.5 0.68 0.4 0.9 1.0 0.2 3.4 1.3 5.3 0.5 0.9
Carbon monoxide 50 16.2 10.8 9.8 2.4 7.3 2.7 1.9 8.3 4.3 7.3 10.5
Hydrofluoric acid 1 0.02 0.16 0.1 0.1 0.1 0.1 0.1 0.1 0.11 0.08
Total Organic Carbon 10 2.3 0.50 0.8 1.1 1.2 0.3 0.7 0.9 1.2 0.9 0.7
Total metals 0.5 0.002 0.17 0.003 0.0038 0.004 0.048 0.005 0.005 0.005 0.006 0.019
Aromatic polycyclic hydrocarbons 0.01 0.00000 0.00060 0.00000 0.00000 0.00000 0.00004 0.000003 0.00000 0.00004 0.00002 0.00008
Dioxins and Furans (ngFTE/Nm3) 0.1 0.00395 0.01478 0.00055 0.00282 0.00078 0.01830 0.00092 0.00061 0.0037 0.00111 0.01544
Cadmium and Thallium 0.05 0.00020 0.0002 0.00037 0.00023 0.00037 0.00175 0.00022 0.0003 0.0013 0.00006 0.00070
Mercury 0.05 0.0002 0.0122 0.0003 0.001 0.0005 0.0004 0.0002 0.000 0.0004 0.0001 0.0007

The regulatory limits refer to Italian Legislative Decree 133/2005. For particulates, hydrochloric acid, nitrogen oxides, sulphur oxides, carbon monoxide, hydrofluoric acid, and total organic carbon, the values are the average continuously measured values and the limits are those for daily averages. For all other components, the values are the average of periodic measurements and the limits refer to each individual measurement. In the new lines at Ferrara, Forlì, Rimini and Modena, mercury levels are continuously measured.