Table 4 Estimated CO2(e) generation from wastewater treatment facilities using UV treatment based on 2022 provincial rates of CO2(e) generated/kWh and total daily flows.

From: Improved disinfection performance for 280 nm LEDs over 254 nm low-pressure UV lamps in community wastewater

Province

CO2(e)kW h−1

Total daily average flow, m3 day−1

Number of facilities

Power, kWh year−1

Annual CO2(e), Tonnes year−1

Estimated annual CO2(e) for LEDs in 2025, Tonnes year−1

BC

7.3

129,784

45

550,521

4.02

3.03

AB

590

975,988

33

4,139,965

2443

1842

SK

580

186,428

6

790,794

459

346

MB

1.1

199,519

12

846,324

0.931

0.702

ON

25

1,250,231

172

5,303,253

133

100

QC

1.5

1,084,258

39

4,599,226

6.90

5.20

NB

290

64,587.8

28

273,969.8

79.5

59.9

NL

24

16,225.2

8

68,824.37

1.65

1.25

NS

670

280,726.5

59

1,186,549

795

599

PE

0

36,575

19

155,144.5

0

0