Nipigon Secondary Wastewater Treatment Plant Report - March, 2013

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Nipigon Secondary Wastewater Treatment Report, March 2013.
The report was prepared by Town of Nipigon Engineer Geoff Aitken in March, 2013 and summarizes operations of the Nipigon secondary wastewater treatment plant.

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Nipigon Secondary Wastewater Treatment Plant Report - March, 2013

  1. 1. Nipigon Water Pollution Control Plant Secondary Treatment Aerobic Digestion
  2. 2. ParameterTSS mg/LBOD5 mg/LCBOD5 mg/LTotal P mg/LAverage Day Flow m3Peak Flow m3Ecoli MPN/100mLTKN mg/LAmmonia mg/LNitrate mg/LpHCOD mg/LOrtho P mg/L
  3. 3. DesignParameterParameter   CriteriaTSS  TSS mg/L 140BOD mg/LBOD5 5   100CBOD mg/LCBOD5 5  Total P P   Total   mg/L 5.50Average Dayay  Flow  Average  D Flow m3 1630Peak  Flow  Peak Flow m3 4780Ecoli  Ecoli MPN/100mLTKN  TKN mg/LAmmonia  Ammonia mg/LNitrate  Nitrate mg/LpH  pHCOD mg/LOrtho P mg/L
  4. 4. Design 2012ParameterParameter   Criteria InfluentTSS  TSS mg/L 140 123BOD mg/LBOD5 5   100 94.8CBOD mg/LCBOD5 5  Total P P   Total   mg/L 5.50 2.98Average Dayay  Flow  Average  D Flow 1630 808.4m3Peak  Flow  Peak Flow m3 4780 2749.3Ecoli  Ecoli MPN/100mLTKN  TKN mg/L 26.4Ammonia  Ammonia mg/LNitrate  Nitrate mg/LpH  pHCOD mg/LOrtho P mg/L
  5. 5. Design 2012 C of AParameterParameter   Criteria Influent CriteriaTSS  TSS mg/L 140 123 15BOD mg/LBOD5 5   100 94.8CBOD mg/LCBOD5 5   15Total P P   Total   mg/L 5.50 2.98 0.8Average Dayay  Flow  Average  D Flow 1630 808.4m3Peak  Flow  Peak Flow m3 4780 2749.3Ecoli  Ecoli MPN/100mL 200TKN  TKN mg/L 26.4Ammonia  Ammonia mg/LNitrate  Nitrate mg/LpH  pH 6 to 9.5COD mg/LOrtho P mg/L
  6. 6. Design 2012 C of A PrimaryParameter Criteria Influent Criteria ClarifierTSS mg/L 140 123 15 365.7BOD5 mg/L 100 94.8CBOD5 mg/L 15Total P mg/L 5.50 2.98 0.8Average Day Flow m3 1630 808.4Peak Flow m3 4780 2749.3Ecoli MPN/100mL 200TKN mg/L 26.4Ammonia mg/LNitrate mg/LpH 6 to 9.5COD mg/L 416.2Ortho P mg/L 0.138
  7. 7. Design 2012 C of A Primary SecondaryParameter Criteria Influent Criteria Clarifier ClarifierTSS mg/L 140 123 15 365.7 19.2BOD5 mg/L 100 94.8CBOD5 mg/L 15Total P mg/L 5.50 2.98 0.8Average Day Flow m3 1630 808.4Peak Flow m3 4780 2749.3Ecoli MPN/100mL 200TKN mg/L 26.4Ammonia mg/LNitrate mg/LpH 6 to 9.5COD mg/L 416.2 48.9Ortho P mg/L 0.138 0.126
  8. 8. Design 2012 C of A Primary Secondary 2012Parameter Criteria Influent Criteria Clarifier Clarifier EffluentTSS mg/L 140 123 15 365.7 19.2 9.0BOD5 mg/L 100 94.8CBOD5 mg/L 15 2.8Total P mg/L 5.50 2.98 0.8 0.438Average Day Flow 1630 808.4m3Peak Flow m3 4780 2749.3Ecoli MPN/100mL 200 11TKN mg/L 26.4Ammonia mg/L 1.132Nitrate mg/L 14.8pH 6 to 9.5 7.22 to 7.96COD mg/L 416.2 48.9Ortho P mg/L 0.138 0.126
  9. 9. Loading kg/dayParameter C of A 2012 Criteria ActualTSS 40.75 7.30CBOD5 40.75 2.29Total P 1.63 0.35
  10. 10. In  2012,  the  Nipigon  WPCP  used  11,006  litres  (L)  of  Poly  Aluminum  Chloride,  with  an  average  dosage  of  12.27  mg/L.    The  primary  purpose  is  for  phosphorus  removal  and  a  secondary  benefit  is  pH  control.  Beginning  January  1,  2013  the  Wastewater  Systems  Effluent  RegulaXons  came  into  effect.    The  only  impact  on  2012  was  to  modify  the  sampling  program  for  2013.    IniXal  review  for  the  federal  regulaXon  would  imply  the  following  needs  to  occur  in  2013:  1.  Submit  an  IdenXficaXon  Report  to  the  Effluent  Regulatory  ReporXng  InformaXon        System  by  May  15,  2013;  2.  Prepare  a  Quarterly  Report  and  submit  with  45  days  of  the  end  of  the  quarter,  the  first  report  is  due  May  15,  2013;  3.  Prepare  a  2013  Annual  Report  and  submit  by  February  15,  2014;  and,  4.  Revised  the  sampling  plan  on  January  1,  2013  to  include  analysis  of  un-­‐ionized  ammonia,  pH  and  Total  Chlorine  Residual  in  the  effluent.  
  11. 11. Total  influent  flow    to  the  Nipigon  WPCP  in  2012  was  295,886  m3  with  an  average  day  flow    of  808.4  m3.  In  2012,  the  average  day  raw  water  flow  to  the  Nipigon  WTP  from  the  Nipigon  River    was  741  m3.  The  influent  flow  to  the  Nipigon  WPCP  is  greater  than  the  raw  water  flow  from  the  Nipigon    WTP.      The  influent  flow  is  approximate  9.3%  greater  than  the  water  taken  from  the  Nipigon    River  and  provided  to  the  WTP.  Generally,  all  sewage  collecXon  systems  experience  inflow  and  infiltraXon.    Typical  design  criteria  for  inflow  and  infiltraXon  is  10%  of  water  flow.    This  is  of  significance  because  it  would  indicate  that  there  are  minimal,  if  any,  combined  sewers  which  was  confirmed  when  the  sanitary  sewer  collecXon  system  was  video  inspected  in  2009  and  2010.  The  new  sludge  storage  lagoon  is  39  m  long  by  33  m  wide  with  a  working  depth  of  2.8  m  with  a  total  sludge  storage  capacity  of  1500  m3  .  

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