Welland Water Treatment Plant - 2015 Summary Report

Prepared under Ontario Regulation 107/03

The Welland Water Treatment Plant was operated in such a way that at no time did it fail to meet or exceed the requirements of the Act, the regulation, the system’s approval or any order that may have been issued for this reporting period.

Summary of Flows

Date Total Flow Raw (ML) Total Flow Treated (ML) Average Day Raw (ML) Average Day Treated (ML) Maximum Day Treated (ML) Minimum Day Treated (ML) Maximum Flow Rate Treated (ML/d) Minimum Flow Rate Treated (ML/d) Waste Sludge (ML)
January 652.74 593.01 21.056 19.129 21.28 14.96 34.733 21.341 31.088
February 610.84 564.62 21.816 20.165 24.79 17.2 45.446 20.909 19.086
March 750.64 686.14 24.214 22.134 30.02 16.35 45.36 21.082 38.389
April 628.48 586.46 20.949 19.549 23.59 16.32 36.202 21.6 24.091
May 735.52 687.65 23.726 22.182 28.33 18.03 48.211 18.403 26.918
June 652.746 611.79 21.758 20.393 24.32 14.55 46.051 18.144 25.723
July 729.73 672.06 23.54 21.679 28.24 16.4 62.726 18.058 33.067
August 736.25 688.06 23.75 22.195 26.23 18.37 47.174 18.922 30.962
September 698.22 626.19 23.274 20.873 25.59 14.42 38.448 22.982 37.243
October 620.24 569.17 20.008 18.36 26.07 14.75 35.165 11.759 29.547
November 582.73 530.04 19.424 17.668 20.49 13.98 42.509 17.539 27.133
December 605.28 546.97 19.525 17.644 20.32 13.79 31.968 15.466 29.481
Total 8,003.42 7,362.16 352.728
Minimum 13.79 11.759 19.086
Maximum 30.02 62.726 38.389
Average 21.92 20.164 29.396

The flow rates are moments in time, and can be affected by various circumstances, such as pump changes or valve position and therefore not unusual to have higher or lower than normal flows.

Comparison of Actual to System Approved Flow

Flow rates as set in the Municipal Drinking Water Licence # 007-104 and Drinking Water Works Permit # 007-204.

Maximum daily flow: 102.3 ML
Maximum flow rate: 102.3 ML/day
Maximum daily flow - during construction 81.800 ML
Maximum flow rate - during construction 81.800 ML/day

The percentage of rated capacity has been calculated based on the maximum daily flow during construction for January 1, 2015 – December 31, 2015

Date Average Day Treated (ML) % of Rated Capacity Maximum Day Treated (ML) % of Rated Capacity Maximum Flow Rate Treated (ML/d) % of Rated Capacity
January 19.129 23.40% 21.28 26.00% 34.733 42.50%
February 20.165 24.70% 24.79 30.30% 45.446 55.60%
March 22.134 27.10% 30.02 36.70% 45.36 55.50%
April 19.549 23.90% 23.59 28.80% 36.202 44.30%
May 22.182 27.10% 28.33 34.60% 48.211 58.90%
June 20.393 24.90% 24.32 29.70% 46.051 56.30%
July 21.679 26.50% 28.24 34.50% 62.726 76.70%
August 22.195 27.10% 26.23 32.10% 47.174 57.70%
September 20.873 25.50% 25.59 31.30% 38.448 47.00%
October 18.36 22.40% 26.07 31.90% 35.165 43.00%
November 17.668 21.60% 20.49 25.00% 42.509 52.00%
December 17.644 21.60% 20.32 24.80% 31.968 39.10%

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