Nipigon Water Pollution Control Plant Secondary Treatment

Aerobic Digestion

Parameter TSS mg/L

BOD5 mg/L

CBOD5 mg/L

Total P mg/L

Average Day Flow m3

Peak Flow m3

Ecoli MPN/100mL

TKN mg/L

Ammonia mg/L

Nitrate mg/L

pH

COD mg/L

Ortho P mg/L

Parameter  

TSS  

BOD5  

CBOD5  

Total  P  

Average  Day  Flow  

Peak  Flow  

Ecoli  

TKN  

Ammonia  

Nitrate  

pH  

Parameter Design Criteria

TSS mg/L 140

BOD5 mg/L 100

CBOD5 mg/L

Total P mg/L 5.50

Average Day Flow m3 1630

Peak Flow m3 4780

Ecoli MPN/100mL

TKN mg/L

Ammonia mg/L

Nitrate mg/L

pH

COD mg/L

Ortho P mg/L

Parameter  

TSS  

BOD5  

CBOD5  

Total  P  

Average  Day  Flow  

Peak  Flow  

Ecoli  

TKN  

Ammonia  

Nitrate  

pH  

Parameter Design Criteria

2012 Influent

TSS mg/L 140 123

BOD5 mg/L 100 94.8

CBOD5 mg/L

Total P mg/L 5.50 2.98

Average Day Flow m3

1630 808.4

Peak Flow m3 4780 2749.3

Ecoli MPN/100mL

TKN mg/L 26.4

Ammonia mg/L

Nitrate mg/L

pH

COD mg/L

Ortho P mg/L

Parameter  

TSS  

BOD5  

CBOD5  

Total  P  

Average  Day  Flow  

Peak  Flow  

Ecoli  

TKN  

Ammonia  

Nitrate  

pH  

Parameter Design Criteria

2012 Influent

C of A Criteria

TSS mg/L 140 123 15

BOD5 mg/L 100 94.8

CBOD5 mg/L 15

Total P mg/L 5.50 2.98 0.8

Average Day Flow m3

1630 808.4

Peak Flow m3 4780 2749.3

Ecoli MPN/100mL 200

TKN mg/L 26.4

Ammonia mg/L

Nitrate mg/L

pH 6 to 9.5

COD mg/L

Ortho P mg/L

Parameter Design Criteria

2012 Influent

C of A Criteria

Primary Clarifier

TSS mg/L 140 123 15 365.7

BOD5 mg/L 100 94.8

CBOD5 mg/L 15

Total P mg/L 5.50 2.98 0.8

Average Day Flow m3 1630 808.4

Peak Flow m3 4780 2749.3

Ecoli MPN/100mL 200

TKN mg/L 26.4

Ammonia mg/L

Nitrate mg/L

pH 6 to 9.5

COD mg/L 416.2

Ortho P mg/L 0.138

Parameter Design Criteria

2012 Influent

C of A Criteria

Primary Clarifier

Secondary Clarifier

TSS mg/L 140 123 15 365.7 19.2

BOD5 mg/L 100 94.8

CBOD5 mg/L 15

Total P mg/L 5.50 2.98 0.8

Average Day Flow m3 1630 808.4

Peak Flow m3 4780 2749.3

Ecoli MPN/100mL 200

TKN mg/L 26.4

Ammonia mg/L

Nitrate mg/L

pH 6 to 9.5

COD mg/L 416.2 48.9

Ortho P mg/L 0.138 0.126

Parameter Design Criteria

2012 Influent

C of A Criteria

Primary Clarifier

Secondary Clarifier

2012 Effluent

TSS mg/L 140 123 15 365.7 19.2 9.0

BOD5 mg/L 100 94.8

CBOD5 mg/L 15 2.8

Total P mg/L 5.50 2.98 0.8 0.438

Average Day Flow m3

1630 808.4

Peak Flow m3 4780 2749.3

Ecoli MPN/100mL 200 11

TKN mg/L 26.4

Ammonia mg/L 1.132

Nitrate mg/L 14.8

pH 6 to 9.5 7.22 to 7.96

COD mg/L 416.2 48.9

Ortho P mg/L 0.138 0.126

Parameter

Loading kg/day C of A

Criteria 2012

Actual TSS 40.75 7.30

CBOD5 40.75 2.29

Total P 1.63 0.35

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.  

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  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.  

In  2012,  the  average  day  raw  water  flow  to  the  Nipigon  WTP  from  the  Nipigon  River    was  741  m3.  

Total  influent  flow    to  the  Nipigon  WPCP  in  2012  was  295,886  m3  with  an  average  day  flow    of  808.4  m3.  

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  .