Dundalk Wastewater Treatment Plant

Transcription

1 Township of Southgate Dundalk Wastewater Treatment Plant 2016 Annual Report Jim Ellis Public Works Manager

2 Dundalk Wastewater Treatment Plant 2016 Annual Report Table of Contents Wastewater Treatment Plant Annual Overview General Wastewater Information. 4 Loading Report.. 5 Performance Report.. 6 Final Effluent Discharge Report 7 Raw Sewage Parameters and Lab Results. 8 Final Effluent Parameters and Lab Results. 9

3 Overview: The Dundalk Wastewater Treatment Plant (WWTP) provided treatment in 2016 with all effluent concentrations limits being met on an annual average. The annual average influent daily flow was 986 m³/day. Project Description: The Dundalk WWTP is a four cell waste stabilization pond facility flowing into an aeration cell pond with a chemical feed system and a flocculation tank with tertiary treatment consisting of sand filters. Plant Facts: Facilities: Design Capacity: Receiver Water: Environmental Compliance Approval: Effluent Requirements: Sampling Requirements: Waste Stabilization Ponds with Tertiary Treatment 1832 m³/day Foley Drain/Grand River D9LYE CBOD SS DO T.Phos. when temperature >5 C T.Phos. when temperature <5 C Unionized Ammonia mg/l 10 mg/l 10 mg/l 4 mg/l 0.4 mg/l 0.8 mg/l 0.1 mg/l Sampling criteria for this system is in accordance with Ministry policy and the Environmental Compliance Approval (ECA) Final Effluent: A grab sample is taken twice a month and tested for CBOD, Suspended Solids, Total Phosphorus, Total Ammonia Nitrogen, Ecoli, ph and temperature. On site testing is performed twice a week on final effluent for Total Ammonia to determine Unionized Ammonia through lab testing, ph, temperature and Dissolved Oxygen. Raw Sewage: A grab sample is taken monthly and tested for BOD, Suspended Solids, Total Kjeldahl Nitrogen and Total Phosphorus. Effluent Flows: The total effluent flow treated in 2016 was 334,685 m³. The annual average daily flow was 1090 m³/day, which results in a 14.13% decrease of total effluent over

4 Raw Sewage Quality: Annual average raw sewage BOD concentration to the lagoon system was mg/l. Annual average raw sewage suspended solids (TSS) concentration to the lagoon system was mg/l. Annual average raw total phosphorus was 3.66 mg/l concentration to the lagoon system. Annual average Total Kjeldahl Nitrogen (TKN) concentration was 35.5 mg/l. Plant Performance and Effluent Quality: The Influent annual flow in 2016 has increased 35.44% over 2015 flows. Annual average effluent CBOD concentration was 2.5 mg/l. Annual average effluent total suspended solids (TSS) concentration was 3.2 mg/l day with a removal efficiency of % with an annual monthly average loading of 3.7 kg/day. Annual average effluent total phosphorus concentration was 0.06 mg/l day with a removal efficiency of 90.04% with an annual monthly average loading of 0.1 kg/day. Annual average effluent concentration for Ammonia-nitrogen was 1.46 mg/l. Annual average Unionized Ammonia was mg/l. Annual average ph was Annual monthly average Ecoli was 16 with the low being 2 and the high being 67. The summary for 2016 of the data for the systems plant operation performance is enclosed in this report. Maintenance and Calibration Activities: Regular monthly preventative maintenance and calibration of test equipment and flow meters are performed by municipal staff and outside certified suppliers. In March 2016 the influent pump #3 was replaced with a new pump. In July 2016 the blower line and diffusers in the aeration pond were replaced by Finbuilt. In July 2016 the UPS was replaced in the filter and blower buildings. In September 2016 a new hour counter was installed on the blower in the Aeration Building. In October 2016 the alum dosage was changed from 12.8 L/D to 4.0 L/D at the Filter Building. 2

5 There were no by-pass events to report. There were two operator shutdowns in 2016: On May 26, 2016 the Filter Building was shut down for draining of the aeration pond for inspection of airlines. The system started up on May 30, On June 22, 2016 the system was shut down due to PH levels testing to high. The system started up on August 17, During this time, the aeration system was replaced with new blower lines and diffusers. Discussion: The Bishop Water Technologies pilot project with the installation of bio-cord reactors in cell # 4 was completed in August An environmental assessment was initiated for the Dundalk Sewage Works, to determine methods and expansion to meet future development needs. 3

6 Township of Southgate - Village of Dundalk 2016 General Wastewater Information Plant # : ECA # : D9LYE Population: 1681 (Village of Dundalk) Flows Design Capacity: 208, Influent Average Daily: - m ,221 1,183 1,164 1,020 1,217 1,482 Annual Influent Flow: 668,600 m3 360, , , , , , , , ,455 Influent Maximum Daily: - m3 4,820 2,458 2,873 3,991 3,926 4,453 4,390 4,258 4,577 Effluent Average Daily: 1,832 m3 1,090 1,181 1,636 1,394 1,136 1,332 1,245 1,466 1,631 Annual Effluent Flow: - m3 334, , , , , , , , ,173 % Discharge vs. Total Capacity: % 58.3% 73.9% 75.7% 55.2% 65.2% 65.0% 80.0% 89.3% Influent Increase 2016 over 2015: % % % 86.14% 2.06% 14.33% % % 35.54% Effluent Decrease 2016 over 2015: % % -2.33% 36.99% % 0.30% % % 62.28% 4

7 Township of Southgate Loading Report - Dundalk Wastewater Plant Municipality: Township of Southgate Year: 2016 Plant: Dundalk Wastewater Treatment Lagoons & Collection System Plant # : Works # : System Description : Faculative Lagoons & Sand Filters Loading Influent Effluent Loading Effluent Effluent Effluent BOD SS T Phos. CBOD SS T Phos. Month kg/day kg/day kg/day kg/day kg/day kg/day January February March April May June July n/a n/a n/a August September October November December Total Average Maximum

8 Municipality: Township of Southgate Plant: Dundalk Wastewater Treatment Lagoons & Collection System Year: 2016 Plant # : Receiver: Foley Drain - Grand River Works # : Design Average Day Flow (m3): 1832 System Description : Faculative Lagoons & Sand Filters January % % % February % % % March % % % April % % % May % % % June % % % July n/a n/a 0.00% n/a 0.00% 5.80 n/a 0.00% n/a n/a n/a n/a n/a n/a August % % % September % % % October % % % November % % % December % % % Average % % % Maximum Township of Southgate Performance Report - Dundalk Wastewater Plant Flows Discharge Bio-Chemical Oxygen Demand Suspended Solids Phosphorus E Coli Temperature Nitrogen Series Loading Raw Effluent Duration Avg. Raw Avg Effluent Percent Avg. Raw Avg. Effluent Percent Avg. Raw Avg. Effluent Percent average < 5 C. TKN Avg. Effluent Unionized Effluent Effluent Effluent Total Flow Avg. Flow Max. Flow Total Flow BOD CBOD Removal SS SS Removal T. Phos T. Phos Removal Effluent or NH3 + NH4 Ammonia CBOD SS T Phos. Month m3 m3 m3 m3 Days mg/l mg/l mg/l mg/l mg/l mg/l Count > 5 C. mg/l mg/l mg/l kg/day kg/day kg/day Total

9 Discharge Total Total Average Average Average Average Average E Coli Average Average Average Duration Effluent Coagulant Coagulant CBOD SS T. Phos. NH3 + NH4 average ph Temp. D.O. Month Days m3 Used (kg) Dosage (mg/l) mg/l mg/l mg/l as N (mg/l) Count Lab Reports C mg/l January February March April May June July 0 n/a 0.00 n/a n/a n/a n/a n/a n/a n/a August September October November December Average Maximum Plant: Dundalk Wastewater Treatment Lagoons & Collection System Works: Year: 2016 Location Type: Final Effluent Discharge Report Township of Southgate Annual Report - Dundalk Wastewater Plant Total

10 Township of Southgate - Village of Dundalk Annual Report - Dundalk Wastewater Plant Plant: Dundalk Wastewater Treatment Lagoons & Collection System Year: 2016 Works: Population Served: 1681 Classification: Class 1 Wastewater Collection & Class 1 Wastewater Treatment Receiver Foley Drain to Grand River Raw Sewage Parameters January February March April May June July August September October November December Summary Average BOD Minimum mg/l Maximum Suspended Average Solids Minimum mg/l Maximum Average TKN Minimum mg/l Maximum Total Average Phosphorus Minimum mg/l Maximum

11 Plant: Dundalk Wastewater Treatment Lagoons & Collection System Year: 2016 Works: Population Served: 1681 Classification: Class 1 Wastewater Collection & Class 1 Wastewater Treatment Receiver Foley Drain to Grand River Final Effluent Parameters January February March April May June July August September October November December Summary Average n/a CBOD Minimum n/a mg/l Maximum n/a Suspended Average n/a Solids Minimum n/a mg/l Maximum n/a Average n/a NH3 + NH4 Minimum n/a mg/l Maximum n/a Average n/a TKN Minimum n/a mg/l Maximum n/a Total Average n/a Phosphorus Minimum n/a mg/l Maximum n/a Average n/a Ecoli Minimum n/a Maximum n/a Average n/a ph Minimum n/a Maximum n/a Average n/a DO Minimum n/a mg/l Maximum n/a Unionized Average n/a Ammonia Minimum n/a mg/l Maximum n/a Township of Southgate - Village of Dundalk Annual Report - Dundalk Wastewater Plant 9