Collingwood Wastewater Treatment Plant. Annual Compliance Report Collingwood Public Utilities

Transcription

1 Collingwood Wastewater Treatment Plant Annual Compliance Report Collingwood Public Utilities

2 Table of Contents Executive Summary. 3 General Information. 4 Section 1.0 The Facility Section 2.0 Annual Average Performance Evaluation Effluent Quality Assessment. 6 Table Table Effluent Sampling Requirements Monitoring and Recording Capacity Assessment.. 9 Section 3.0 Biosolids Management.. 9 Section 4.0 Bypass Occurrences 9 Section 5.0 Maintenance Section 6.0 Complaints Report Section 7.0 Undertaking Next Reporting Period...11 Appendices Appendix A WWTP Offline Sampling Program.. 12 Appendix B Monthly Flow and Process Quality Data 14 Appendix C Sludge Management. 29 Appendix D Plant Certificate of Approval 39 Appendix E Calibration Reports Appendix F Bypass and Spills Reports 63 1

3 Definitions BOD CBOD 5 cfu COD DO ECA Hg FP HP kg kw mg/l Ml/d m 3 /d NH 3 NO 2 NO 3 SVI TBOD TKN TP TS TSS UV VFA VS WWTP Biochemical Oxygen Demand Carbonaceous Biochemical Oxygen Demand Colony Forming Units Chemical Oxygen Demand Dissolved Oxygen Environmental Compliance Approval Mercury Filtered Phosphorous Horsepower Kilograms Kilowatt Milligrams per litre Mega litres per day Cubic metres per day Ammonia Nitrites Nitrates Sludge Volume Index Total Biochemical Oxygen Demand Total Kjeldahl Nitrogen Total Phosphorous Total Solids Total Suspended Solids Ultraviolet Volatile Fatty Acids Volatile Solids Wastewater Treatment Plant 2

4 Executive Summary This report has been compiled in accordance with the reporting requirements of the Enviornmental Compliance Approval (formerly Certificate of Approval) TLQB2 Section 10 subsection (6). The report is broken down into sections for ease of consumption, and additional information may be contained in each section over and above that which is required to support and substantiate the required content. If further clarification is required please do not hesitate to contact: Collingwood Wastewater Treatment Plant PO Box Hurontario Street Collingwood, ON L9Y 3Z Total Flow to WWTP Design average daily Flow Average Daily Flow Bypass events 6,505,420 m Ml m 3 /d Ml/d m 3 /d 17.8 Ml/d None 2013 at a Glance Compliance Parameters Actual Compliance Parameter Exceedance (Y=yes, N=no) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual average Objective 15 mg/l 2.3 N N N N N N N N N N N N CBOD 5 Annual average Limit 25 mg/l N N N N N N N N N N N N CBOD 5 Annual average Loading 613.7kg/l N N N N N N N N N N N N CBOD 5 Annual average Objective 15mg/l 5.8 N N N N N N N N N N N N TSS Annual average Limit 25mg/l N N N N N N N N N N N N TSS Annual average Loading 613.7kg/d N N N N N N N N N N N N TSS Monthly average Objective 0.8mg/l 0.15 N N N N N N N N N N N N TP Monthly average Limit 1.0mg/l N N N N N N N N N N N N TP Monthly average Loading 24.5kg/d 2.65 N N N N N N N N N N N N TP Monthly Objective 100cfu/100 >1<198 N N N N Y N N Y Y N N N geomean E-Coli ml Monthly Limit 200cfu/100 N N N N N N N N N N N N geomean E-Coli ml.ph range Objective 6.5 to 9.0 N N N N N N N N N N N N.pH range Limit 6.0 to to 7.9 N N N N N N N N N N N N 3

5 General Plant Reporting: Collingwood WWTP MOE Works Number: Plant Location: Plant Classification: Plant Operating Authority: Contact: 3 Birch Street Collingwood, Ontario L9Y 2T8 Tel. (705) Fax. (705) III Town of Collingwood P.O. Box Hurontario St. Collingwood, Ontario L9Y 3Z5 Tel. (705) Fax. (705) Don Green Manager, Environmental Services dgreen@collingwood.ca Marcus Firman Chief Operating Officer Collingwood Public Utilities extension 2246 mfirman@collus.com Plant Personnel: Name WWT Classification Licence No. Expiry Date Donald Green July 31, 2016 Paul Clark August 31, 2014 Glenn Price September 30,2015 Jennifer Bell Adams August 31, 2016 Bert Robinson May 31, 2014 Mark Service August 31, 2014 Tyler Barrette August 31, 2014 Evan Orser September 30,2014 Name WWC Classification Licence No. Expiry Date Tyler Barrette August 31, 2014 Glenn Price OIT OT68560 December 31,2016 Paul Clark November 30,2014 Mark Service January 31, 2016 Plant Certificate of Approval & Amendments: The Plant operates under the Certificate of Approval Number TLQB2 dated the 17 th day of December

6 Section 1.0 The Facility The Collingwood Wastewater Treatment Plant (WWTP), owned and operated by the Town of Collingwood, is a conventional activated sludge plant with alum addition for phosphorus removal. Treated effluent from the plant is discharged to Collingwood Harbour, which is situated in Georgian Bay on the south shore of Nottawasaga Bay. The plant was first constructed in 1958 to provide primary treatment of the Town's domestic and industrial wastewater. The primary plant was expanded in Secondary treatment was added in The rated flow capacity is 24,548 m 3 /day with a peak flow rate of 60,900 m 3 /day. Wastewater from the serviced area flows to the plant by gravity, although seven (7) pumping stations at Minnesota Street, St. Clair Street., Paterson Street, Cranberry Trail and Black Ash Creek, Pretty River Estates and Silver Glen boost the flow throughout the area. Major unit operations at the Collingwood WWTP include the following: Headworks - which provides the following preliminary process treatments: o Emergency plant bypass o Automated mechanical raked raw sewage screen o Manual raked bypass raw sewage screen o Raw sewage pumping station o Grit removal o Bio scrubber for headworks odour control o Septic/leachate handling Primary Sedimentation Activated Sludge with Alum addition for Phosphorus Removal Secondary Clarification Disinfection with UV Effluent discharge to Collingwood Harbour Thickening of waste activated sludge by Dissolved Air Flotation Anaerobic Sludge Digestion Liquid Digested Sludge Land Utilization Disposal Sludge Storage Lagoon (off site) Standby power source (diesel driven generator) Data is summarized in Appendix A - Table 2.1 5

7 Section 2.0 Annual Average Performance Evaluation Effluent Quality Assessment 1) Effluent Objectives - See Section 6 subsection(1) of Environmental Compliance Approval (ECA) The effluent objectives concentration is summarized below in Table 1. Effluent Parameter Table 1-Effluent Objectives Concentration Objectives (milligrams per litre unless otherwise indicated) CBOD Total Suspended Solids 15.0 Total Phosphorus 0.8 E.Coli Monthly Geometric Mean Density 100organisms per 100ml ph of the effluent maintained between 6.5 to 9.5, inclusive, at all times Effluent Parameter Table 2-Effluent Limits Average Concentration (milligrams per litre unless otherwise indicated) CBOD Total Suspended Solids Total Phosphorus Average Waste Loading (kilograms per day unless otherwise indicated) ph of the effluent maintained between 6.0 to 9.5, inclusive, at all times 2) For the purposes of determining compliance with and enforcing concentrations and readings in Table 2 see section 7 (subsection 2) of ECA. a. The Annual Average Concentration of Carbonaceous Biochemical Oxygen Demand (CBOD 5 ) and Total Suspended Solids named in Column 1 of Table 2 shall not exceed the corresponding maximum concentration set out in Column 3 of Table 2. b. The Monthly Average Concentration of Total Phosphorus named in Column 1 of Table 2 shall not exceed the corresponding maximum concentration set out in Column 3 of Table 2. c. The Annual Average Loading of a parameter named in Column 1 of Table 2 shall not exceed the corresponding maximum waste loading set out in Column 4 of Table 2. d. The ph of the effluent shall be maintained within the limits outlined in Table 2 at all times. 3) Notwithstanding subsection (1), the Owner shall operate and maintain the Works such that the effluent is continuously disinfected so that the monthly Geometric Mean Density of E.Coli does not exceed 200 organisms per 100 millilitres of effluent discharged from the works. 6

8 4) Only those monitoring results collected during the corresponding time period shall be used in calculating the Annual Average Concentration/Monthly Average Concentration/Annual Average Loading for this Certificate. The annual average effluent concentrations for CBOD 5, and TP fell within the applicable objectives. The monthly average effluent concentrations for TP fell within the applicable objective. The annual average effluent concentrations for CBOD 5, and SS fell within the applicable compliance limit. The monthly average effluent concentration for TP fell within the applicable compliance limit. The annual average effluent loadings for CBOD 5, SS, and TP, all fell within the applicable compliance limits. The ph values have fallen within the 6.0 to 9.5 range permitted under the certificate. The monthly geometric mean densities of E-Coli bacteria in the final effluent met the compliance criteria for all months. The monthly geometric mean densities of E-Coli bacteria in the final effluent met the objective criteria for all months excepting May (111), August (103) and September (198) Effluent Sampling Requirements Monitoring and Reporting 1.0 Compliance testing and analysis Monitoring requirements are specified under condition #9 (3) of the Certificate of Approval. Twenty-four hour composite samples of raw sewage are required to be collected quarterly and analyzed for CBOD 5, total SS, TP and Total Kjeldahl Nitrogen (TKN). Twenty-four hour composite samples of final effluent are required to be collected monthly and analyzed for CBOD 5, total SS. Twenty-four hour composite samples of final effluent are required to be collected weekly for analysis for total phosphorus and total ammonia nitrogen. Grab samples of final effluent are required to be collected weekly for analysis for E-Coli bacteria. Lastly, the temperature and ph of the final effluent is required to be tested three times each week. The plant s current regular monitoring program exceeds these minimum requirements. Compliance sampling and analysis of raw sewage is carried out quarterly. Twenty-four hour composite samples are collected using an automatic sampler for analysis of CBOD 5, total suspended solids, total phosphorus, and total Kjeldahl nitrogen. Compliance sampling and analysis of final effluent is carried out weekly. Twenty-four hour composite samples are collected using a refrigerated automatic sampler for analysis of CBOD 5, TSS, TP, and TKN total ammonia nitrogen, nitrite and nitrate. Grab samples of final effluent are also collected weekly for analysis of E.Coli bacteria. Lastly, grab samples are collected daily (Monday to Friday) and tested for ph and temperature. 7

9 With the exception of the samples collected for ph and temperature testing, analysis for all compliance samples is carried out by our external contract laboratory, ALS Environmental Laboratory (Canadian Association for Environmental Analytical Laboratories #A3149), located in Waterloo. The plant also complies with Guideline F-10-1 concerning sampling and analysis requirements which satisfies condition 9 (4) (a). The temperature and ph of the final effluent is taken in the field at the time of sampling for Total Ammonia Nitrogen so as we can calculate the concentration of un-ionized ammonia as set out in condition 9 (5). The Collingwood WWTP external sampling program is attached as Appendix A. All external laboratory analysis results are reported in the R1 and R2 Municipal Utility Monitoring forms which are submitted electronically to the Barrie District Office and are used in generating the annual plant performance report. 2.0 In-house testing and analysis for process control Twenty-four hour composite samples are collected Monday thru Friday on influent, primary effluent & final effluent. Grab samples are also obtained for other process streams as required for process control purposes. All samples are analysed on-site using techniques in standard methods or using approved methods for HACH DR/2010 Spectrophotometer. The Collingwood WWTP internal sampling program is attached as Appendix A. 3.0 Flow Measurement Flows at the Collingwood WWTP are continuously measured at the raw sewage pumps and at the final effluent weir. Raw sewage flows are monitored by ultrasonic flow measuring devices on pumps 1 and 3 and an electromagnetic device (magmeter) on pump 2. All devices are installed on the discharge side of the pumps. Final effluent flows are continuously monitored by means of rectangular weir with an ultrasonic flow monitor. A 24 hour chart recorder records the final effluent flow. Both the influent and final effluent flows are trended through the Scada system The meters are calibrated annually for accuracy (must be +/- 15% of flow rate) to satisfy condition 9 (7) of the Certificate of Approval. The calibration reports are attached as Appendix E. 8

10 2.1.2 Capacity Assessment The Certificate of Approval specifies that the plant is rated to treat an average daily flow of 24,548 cubic meters/day and a peak flow of 60,900 cubic meters/day. Design Current year ADF in m 3 /d 24,548 17,774 Maximum daily flow in m 3 /d 60,900 44,980 The annual average daily flow has fallen within these limits for this reporting period. The peak single day max daily design flow was not exceeded. The annual average performance data is summarized in Appendix B. Section 3.0 Biosolids Management The WWTP currently stabilizes its biosolids (sludge) through anaerobic digestion comprised of two (2) primary digesters, each with a capacity of 1223m 3, one (1) secondary digester for separation of digested sludge and collection and storage of gas, with a capacity of 1223m 3 and one (1) sludge holding tank with continuous air supply and a capacity of 990m 3. A waste gas burner with a rated capacity of 560m 3 per hour is connected to the system. Stabilized biosolids are spread on licensed agricultural land as a nutrient and soil conditioner. Sludge produced at the Collingwood WWTP meets the quality criteria specified in the Ontario Guidelines for Sewage Sludge Utilization on Agricultural lands. Sludge is applied in accordance with these guidelines and the conditions set out in the site Certificate of Approvals. However, sludge disposal through direct utilization on land is not practical during winter months, during periods of inclement weather and when agricultural fields are inaccessible. The provincial guidelines for biosolids utilization on land recommends municipalities provide six (6) months sludge storage facilities. The Town of Collingwood currently owns & operates a 5000 m 3 sludge transfer facility located on Part Lot 48, Concession 12 in the Town of Collingwood and contracts two (2) 6800m 3 sludge transfer facilities from Region of Huronia Environmental Services Ltd. to achieve this guideline. Sludge disposal operations are currently contracted to a private hauler: Region of Huronia Environmental Services Limited R. R.#1 New Lowell, Ontario L0M 1N0 A total volume of 26,516 m 3 of biosolids was disposed of from the Collingwood facility in Samples of anaerobic sludge are collected twice monthly and sent for metals, E.Coli, and nutrient analysis to ALS Environmental, Waterloo, Ontario, N2V 2C5. Appendix C provides a detailed summary report of sites utilized for sludge disposal in Original reporting analysis is available at the plant for viewing. Section 4.0 Bypass Occurrences There were no bypass occurrences during this reporting period. See Appendix F. 9

11 Section 5.0 Maintenance A log is kept for each piece of equipment at the Collingwood plant. These logs are available for inspection at the plant. In 2013, we continued with the Continuous Service Program with Ainsworth Electric Co. Limited being the source provider. This program utilizes such tools as thermography, voltage, load and harmonic checks, vibrations analysis etcetera, and has been designed using predictive and preventative maintenance to increase safety, reduce down time, reduce maintenance costs, protect asset value and extend equipment life. In regards to electrical inspections, the WWTP and seven (7) pumping stations are being reviewed under the Electrical Safety Authority. The associated logbook at the site is available for review. All boiler and pressure vessels were inspected by personnel from the Boiler Inspection and Insurance Company of Canada - no concerns. All primary and secondary clarifiers were taken out of service for inspection and repairs implemented as required (e.g. damaged flights replaced, drive chains changed, etcetera). Primary clarifier #3: replaced longitudinal collector chains and, end collector chains and drive chain Secondary clarifier (south) replaced all chain and flights. UV lamps on the disinfection system were changed out before the 5000 hour limit. Yearly inspection/maintenance was performed by Toromont CAT on standby power equipment at the main plant and pumping stations. Gas monitoring equipment was calibrated and serviced as per the original manufacture s recommendation. 10

12 Section 6.0 Complaints The report below outlines each complaint received in The documented versions of these complaints are held at the Collingwood WWTP and are available for review on request. Date Complaint Action/Observations July 6, 2013 Odour reported by Beaver & Bulldog Waste Gas burner did not relight. Operator relit and no further action. July 18, 2013 Odour reported by Rupert s Landing resident Found no apparent cause, but no further complaints from area. August 6, 2013 Odour St. Clair pumping station area Wet Well access was open to accommodate installation of new pump. Resident was ok as station was back to normal the following October 2, 2013 Odour Elliot Avenue near St. Clair pumping station morning. Air escaping access hatches. Resealed weather stripping and added new multi-point latch/lock. No further complaints. Section 7.0 Undertaking Next Reporting Period Conestoga Rovers and Associates have completed a Class Environmental Assessment related to the next expansion phase for the Collingwood WWTP. 11

13 Appendix A WWTP Offline Sampling Program Samples are analyzed using procedures from the most current edition of Standard Methods or HACH DR/2010 spectrophotometer methods. The time and day of the samples is determined by the Laboratory Technician so as to equalize the workload while maintaining representative operations data. The Technician is responsible for obtaining proper and sufficient samples through co-ordination with the process operators. COLLINGWOOD EXTERNAL SAMPLING PROGRAM Unit Process Type Sample Parameters Tested Frequency Raw Sewage Composite CBOD 5, TSS, TP, TKN Quarterly Primary Effluent Composite NH 3,TKN, VFA, NO 3, CBOD 5, NO 2, Final Effluent Composite NH 3, TKN, TP, NO 3, CBOD 5, SS, TBOD 5 NO 2 Grab Bacti (E-coli) Biosolids Grab when truck TS, anions, ICP, Hg, (Anaerobic sludge) loaded TKN, TP, VS & E-coli Influent 24 hr. composite ph, SS, TP, FP, Temperature, COD BOD 5, Primary Effluent 24 hr. composite SS, TP, FP, COD BOD 5 Final Effluent 24 hr. composite ph, SS, TP, FP, Temperature. COD Biweekly Weekly Weekly 2x/month Daily M-F WTF Daily M-F W,Th,F Daily M-F Aeration (i) mixed liquor (ii) return sludge Grab Grab NH 3 BOD 5, - half hour settling - SS - Calculate SVI - DO (as required to check against on-line readings) SS W,Th,F Daily M-F Daily M-F (iii) waste activated sludge Grab SS Daily M-F Thickening Grab TS, VS in thickened 4 X/week sludge Raw Sludge Grab TS, VS 4 X/week Digested Sludge Grab TS, VS Weekly Digester Supernatant Grab TS, VS, BOD 5, TP, As process requires alkalinity Volatile acids, ph 12

14 Table 2.1 Major Unit Process Data Headworks a) Mechanically cleaned bar screen & conveyor (manually raked bypass raw sewage screen) b) Wet Well Pumps Number:3-100 HP - 14" Submersible angle flow pumps in a dry well application c) Grit Separators (i) Primary Grit Separation mm diameter free standing Grit King Dynamic Separators - with automated control system (ii) Secondary Grit Separation 1 - US Filter type SW grit classifier Odour Control Within Building CMS Bio Scrub model B13-M175 tank c/w 23,500 square feet of bio scrub media Primary Sedimentation Number: 3 Rectangular Tanks Surface Area: 560m 2 Total Volume: 1,846m 3 Aeration Tanks Type: Conventional Activated Sludge Number: 2 Trains, 3 cells per train Cell Dimensions:14.6m x 14.6m x 4.6m Total Volume: 5,885m 3 Aeration: HP fine bubble diffused air Secondary Clarification Number: 2 Rectangular Tanks Dimensions: 12.2m x 61.0m x 3.2m Surface Area: 1,488m 2 Disinfection System Ultraviolet light process Trojan - UV4000E Dissolved Air Flotation Unit Number: 1 (Komline-Sanderson) Surface Area: 13.9m 2 Anaerobic Digesters Number: 2 Primaries, 1 Secondary, 1 Holding Tank Total Primary Digester Volume: 2,466m 3 Total Secondary Digester Volume: 1,223m 3 Total Holding Tank Volume: 990m 3 Standby Power Supply 1-725kW continuous rated diesel generator set 13

15 Appendix B Monthly Flow and Process Quality Data Plant Collingwood WWTP Region Central Effluent Objectives Municipality Town of Collingwood District Simcoe CBOD5 15mg/L Works Number Operating AuthoritMunicipal TSS 15mg/L Treatment Conventional Activated Sludge Watercourse Collingwood Harbour TP 0.8 mg/l Phosphorus Removal Minor Basin Huron E-Coli 100 organisms/ 100mL Design Capacity (1000 m3/d) Major Basin Great Lakes ph 6.5 to 9.0 Population Served Annual average Annual average Average 2013 Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec concentration Loading daily flow FLOWS (m3/d) Monthly ADF Month Total Max day Min day CBOD5 (mg/l) Compliance is Compliance is Influent mg/l kg/d Effluent Final Effluent Objective concentration is 15 mg/l SS(mg/L) Compliance is Compliance is Influent mg/l kg/d Effluent Final Effluent Objective concentration is 15 mg/l TP (mg/l) Compliance is Influent kg/d Effluent Monthly average concentration:objective is 0.8mg/L, compliance limit is1.0mg/l and an annual average loading of 24.5 kg/d TKN (mg/l) Influent Effluent TAN (mg/l) Influent Effluent ph of Final Effluent Min (6.0) Max (9.5) Compliance means maintaining the the ph of the final effluent within the limits 6.0 to 9.5(objective is 6.5 to 9.0) E-Coli Final effluent Monthly geometric mean density of E-Coli: objective is100organisms/100ml,compliance is 200 organisms /100mL 14

16 TOWN of COLLINGWOOD WWTP 2013 Monthly Average Final Effluent Flow m3/d Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Monthly ADF MONTH TOWN of COLLINGWOOD WWTP 2013 Monthly Average Concentration Final Effluent CBOD MOE COMPLIANCE Final Effluent CBOD5 Annual average concentration not to exceed 25 mg/l mg/l OPERATING OBJECTIVE 15 mg/l Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Effluent Month 15

17 TOWN of COLLINGWOOD WWTP 2013 Monthly Average Concentration Final EffluentTSS MOE COMPLIANCE Final EffluentTSS Annual average concentration not to exceed 25 mg/l 20.0 mg/l 15.0 OPERATING OBJECTIVE 15 mg/l Effluent Month TOWN of COLLINGWOOD WWTP 2013 Monthly Average Concentration Final Effluent TP MOE COMPLIANCE Final Effluent TP Monthly average concentration not to exceed 1.0 mg/l Operating objective is 0.8mg/L mg/l Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Effluent Month 16

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30 Appendix C Sludge Management Sludge Management Overview Contaminan Arsenic Cadmium Cobalt Chromium Copper Mercury Molybdenum Nickel Lead Selenium Zinc Ammonia Nitrate Nitrite Kjeldahl-N Phosphorus Potassium Total Solids E-Coli Volatile Solids Sampling As Cd Co Cr Cu Hg Mo Ni Pb Se Zn NH3 NO3 NO2 TKN TP K TS VS Date mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L mg / L % cfu/g % 9-Jan Jan Feb Feb Mar Mar Apr Apr May May May Jun Jun Jul Jul Aug Aug Sep Sep Oct Oct Oct Nov Nov Dec Dec

31 Biosolids Spreading Report By Field (System Generated 9 Page Report): 30

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40 Appendix D Plant Certificate of Approval 39

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59 Appendix E Calibration Reports 58

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64 Appendix F Bypass and Spills Report The report below outlines any bypasses in The original document is held at the Collingwood WWTP and is available for review upon request. Pumping Station And Plant Bypass Monthly Summary Primary Bypass Secondary Bypass Month No. of days Duration (hrs) Volume (1,000 m 3 ) No. of days Duration (hrs) Volume (1,000 m 3 ) Jan 0 0 Feb 0 0 Mar 0 0 Apr 0 0 May 0 0 Jun 0 0 Jul 0 0 Aug 0 0 Sep 0 0 Oct 0 0 Nov 0 0 Dec 0 0 Total 0 0 Volume of Bypass as a % of the average daily flow 63

65 All the information supply within this document is correct and complete to the best of the author s knowledge. If further information is required please do not hesitate to contact the author. Mr. Don Green Manager, Environmental Services

66 For more information please contact: Don Green Manager, Environmental Services Marcus Firman Chief Operating Officer Collingwood Public Utilities extension 2246