till /Mission Water & Sewer Services REPORT

Transcription

1 tr '! Abbotsfo rd till /Mission Water & Sewer Services REPORT To: From: Abbotsford/Mission Water & Sewer Commission (WSC) Len Stein, Director of Utility Operations Date: June 29, 2010 Subject: JAMES Plant Monthly Report - June 2010 File: Report No.: WSC UTILITY MANAGEMENT COMMITTEE (UMC) RECOMMENDATION THAT Report No. WSC , dated June 29, 2010, from Len Stein, Director of Utility Operations, regarding JAMES Plant Monthly Report - June 2010, be received. DISCUSSION The plant effluent quality met all regulatory parameters for effluent discharge during the month of June 2010 and was well within the regulated limits. The key plant measurement parameters discussed below are defined and tabulated in appendices A-G. All results are forwarded to MoE on a quarterly and yearly basis. All non-compliance parameters are listed in the reports to MoE. InfluenVEffluent Data (Appendix A) This shows the daily flows and influent and effluent quality on each day of the month. The fecal coliform test gives an indication that bacteria originating from the intestines of warm blooded animals may be present in the wastewater. All the required fecal coliform testing for the month of June 2010 were within acceptable limits. Biochemica l Oxygen Demand (BOD) (Appendix B) BOD is the rate at which oxygen in wastewater is used for the decomposition of organic matter in the waste water. High BOD rates reflect high organic content in the wastewater. Treatment plant processes reduce BOD levels before discharge to the environment.

2 WSC Report No Page 2 of 3 The following chart compares monthly average BODs in mg/l. June May April June June 2009/ / /2010 Parameter Regulation Variance Variance Variance BOD Influent n/a 225 mg/l 202 mg/l mg/l m/i m/ 1 BOD Effluent 45 m / m / mg/l mg/l -5.8 m / mq/l The average BOD strength in the plant effluent for the three months listed was well below the regulated limit of 45 mg/l. Total Suspended Solids (TSS) (Appendix C) Total suspended solids are the total amount of solids that remain in suspension in the water. The higher the suspended solids concentration the harder the effluent is to disinfect and the higher the Biochemical oxygen demand will be. The following chart compares monthly averages TSS in mg/l. June May April June June 2009/ / /2010 Parameter Regulation Variance Variance Variance TSS Influent n/a 392 m/1 335 m/ mq/l -31 mg/l +87 mg/l TSS Effluent 45 mg/l 11.2 mg/l 11 mg/l +.2 m.9/1-1.6 mg/l +.1m/1 The above compares the average of TSS influent and TSS effluent strength over the same time period 2010/2009, for three consecutive months and is well below the regulated limit of 45 mg/l. Ammonia (NH3) (Appendix D) June May April June June 2009/ / /2010 Parameter Regulation Variance Variance Variance NH3 Influent n/a 21.7 m / m / 1-4 m/1-6.1 mg/l -5.7 mg/l NH3 Effluent ** 13.4 mq/l 5.1 mq/l -8.3 mq/l -7.5 mg/l -9.1 m / 1.. ** Acute ToxIcIty threshold chart AppendIx E The Ammonia concentration on the effluent was lower than the same three months last year. All tests done for the month of June were well below the toxicity curve. Effluent Ph has also been dropping in recent months substantially reducing the ammonia toxicity effect. This can be seen in appendix E. Biosolids Utilization 2010 Biosolids Utilization Program (total to end of April 2010) Hiqhland Valley Mine 2,256 tonnes Biosolids to Val-E-Gro 797tonnes Val-E-Gro sales 1,603 yards Granby Mine o tonnes * May totals not received at time of report *

3 WSC Report No Page 3 of 3 Sumas analvsis Flows from Sumas for the month of May 2010 were below the threshold of 1,306.0 m3tday. Sumas TSS average was 225 mgtl; 25 mgtl above the threshold of 200 mgtl, extra strength charges for TSS will be applied for the month of May. Sumas BOD average was 177 mgtl; below the threshold of 200 mgtl, extra strength charges will not be applied for the month of May. BOD, TSS and flows for Sumas will be one month behind due to length of time needed to receive the results. SUMMARY The plant effluent quality throughout the month of June 2010 met all regulatory parameters for effluent discharge. Sumas effluent quality for the month of May for TSS was above the threshold limit and extra strength charges will be applied. Sumas flows and BOD for the month of May were within the allowable limits. Jim Gar n, P.Eng. Gener. Manager of Engineering and Regional Utilit'es Len Stein, A.Sc.T Director of Utility Operations,

4 CITY OF ABBOTSFORD J.A.M.E.S POLLUTION CONTROL CENTRE INFLUENT/EFFLUENT DATA FOR THE MONTH OF JUNE 2010 Date Weather Flow (m'/day) Influent cbod (mg/l) 1 MostlvCloudv i hi Rain Showe sl. Light Rain S ereast Liaht Ra Overcast PartN Cloudv 59, l LiQht Rain Cloud. U hi Partlv CIoudv A Few Clouds 61,180 20' 15 Partly Cloudv MosUy Cloudy 60, , Overcast Panty Cloud, Overcast Panl Cloudy 59 l ao 24 Overcast Overcast U hi Rain 51 " JO Effluent cbod (m g/l) Influent Effluent Effluent Effluent Suspended Suspended Total Fecal Solid s Solids Ammonia Coliforms (mg/l) (mg/l) (mg/l) (CoIl100mL) ' 'JO 12 ' ' ,., ' ' ' 11 '.5 0 DEFINITIONS BOD (Biochemical Oxygen Demand) is defined as the rate at which microorganisms use the oxygen in wastewater while stablizing decomposable organic matter under aerobic conditions. BOD Test is a procedure that measures the rate of oxygen use under controlled conditions of time and temperature. Standard test conditions include dark incubation al 20 C for a period of 5 days. Suspended Solids (s.s.) are solids that either float on the surface and/or are suspended in water, wastewater, or other liquids, and which are largely removable by laboratory filtering. Ammonia N (Ammonia Nitrogen) is tested as an indicator of toxicity in the plant effluent. General rule of thumb is that toxicity is being approached when the Ammonia N is in the mgll range if the PH is above 7.5. At that range or beyond, there is a good possibility of faifing the required 96 hour LeSO Bioassay Test as outlined by Environment Fecal Coliform Test is an indicator for the presence of bacteria originating from the intestines of warm-blooded animals and their presence may be indicative of the presence of disease producing organisms that may be found with them. Zero or counts below the maximum level of 200 colonies! 200 ml sample indicates that sufficient chlorine has been used for disinfection purposes. Min 55'60 Max Ava 60 5iS Total 1, Municipal Sewage Regulations Parameters J ' Maximum Flow - 122,500 cubic m eters/day BOD -45 mgll Suspended Solids - 45 mgfl Fecal Coliform, max colonies/100 ml sample BOD Average Reduction: 98 /. L Suspended Solids Ave. Reduction: 97% Appendix A

5 JAMES Pollution Control Centre Three Month BOD Data Comparision 2009 VS Biochemical Oxygen Demand Municipal Sewage Regulation Parameter Effluent BOD - 45mgl1 Date Apr-09 Apr.10 Variance Inf. 80D Inf. BOD Inf MIN MAX AVG Apr-09 Apr.10 Variance Elf. BOD Elf. BOD Elf May-09 May.10 Variance May-09 May 10 Variance Jun-09 Jun 10 Variance Jun-09 Jun 10 Variance Inf. 80D Inf.80D Inf. Eft. BOD Eft. 800 Elf. Inf. BOD Inf. 80D Inf. EIf. BOD Eft. 800 Elf Appendix B

6 JAMES Pollution Control Centre Three Month TSS Oata Comparision 2009 VS I !! ? MIN. MAX AVG Total Suspended Solids Apr-091Apr:-10 'artance IAPr-09 I Apr-10 May-10 I..."... Jun-09 I Jun-10 DATE Inf. TSS I Inf. TSS Inf. Eff. TSS Eft. TSS Eft. TSS Eft. Inf. TSS Inf. TSS Inf T , C 2 2: _4_ I T '0. H 3.8 I I I I I _ _ 8.4 I -s A I I I I I I Municipal Sewage Regulation Parameter Eff TSS - 45mgll maximum Jun-09 I Jun-10 I EfUSS Elf. TSS 9.8 I s:s H : _ I I 13.4 I 430 I 395 I 17.8 I 11? I I I I r62"o-l 338 I , 5' 3, H I -Ff I I C I I _.. _.lce Elf Appendix C

7 JAMES Pollution Control Centre Three Month Ammonia Data Comparision 2009 vs Date Apr-09 Apr-10 Variance Inf. NH3 Inf. NH3 Inf MIN MAX AVG Apr-09 Apr-10 Variance May-09 Eff. NH3 Eff. NH3 Eff. Inf. NH Ammonia May-10 Variance May-09 May-10 Variance Jun-09 Jun-10 Variance Jun-09 Jun-10 Variance Inf. NH3 Inf. Eff. NH3 Eff. NH3 Eff. Inf. NH3 Inf. NH3 Inf. Eff.NH3 Eff. NH3 Eff Appendix 0

8 June 2010 Effluent Ammonia vs ph J C, E-.!!! 100 <: 0 E..:: i \ \ I \ i \! \ \ " I l I-+- Acute Toxicity Threshold I A Effiuent Data A. A \ A ph Appendix E

9 City of Sumas May 2010 Report of Wastewater Flow to Abbotsford/Mission Water and Sewer Commission (WSC) Governed by Sumas Wastewater Agreement dated November 13, Abbotsford Residential User Rate $0.64 1m' 2010 Sumas Annual Rate (Abb Res User Rate 1.25) $0.95 1m' 2010 Sumas Maximum Daily Flow Charge (Sumas Annual Rate 2) $1.60 1m' 2010 Maximum Dailv Flow oer Schedule OlE" m 3 /day Minimum Daily Flow per Schedule "An m 3 /dav Note: Currency in Canadian dollars Extra Strength Charges invoiced separately Appendix F

10 SUMAS EXTRA STRENGTH CHARGES FOR MAY 2010 Customer Sewer May 3/4 May 3/4 May May May 16/17 May 16/17 May 25/26 May 25/26 Volume BOD TSS BOD TSS BOD TSS BOD TSS (m' ) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) City of Sumas 17, NOTES: 1) Extra Strength Rate for BOD is $0.39/kg and for TSS is $0.41 /kg. 2) "BOD Charge" and "TSS Charge" includes addition of Premium Rate (25%). 3) Sewer Volume used is for the month noted and is supplied by the City of Sumas. 4) All BOD and TSS analysis was completed by Maxxam Analytics. Average Average BOD TSS Total BOD TSS Charge Charge Ext,a Strength (mg/l) (mg/l) Charge $0 $ $ Appendix G