Online process monitoring is helping many water resource recovery facilities (WRRF) increase operational efficiency. This webinar will feature case studies of YSI customers using the IQ SensorNet for monitoring and control of their wastewater treatment process. Find out how customers are using the IQ SensorNet to get their processes and operating budgets under control and learn the tips for keeping treatment and monitoring systems trouble-free. Aeration control, sludge wasting control, and chemical dosing control applications will be featured. Highlights include: Precise aeration control with continuous monitoring of dissolved oxygen Sludge wasting control to ensure an adequate biomass population Chemical dosing control for accurate dosing amounts, every time Find out more about how these facilities are using the IQ SensorNet system to monitor and control their wastewater process to meet their unique, individual plant needs and see how you can use these same controls at your facility.

1. How to Improve Your Wastewater
Treatment Process and Save Money
with Online Process Monitoring
YSI WASTEWATER WEBINAR SERIES

2. Benefits of Online Process Monitoring
Meet regulatory requirements
Improve process performance and reliability
Record data and create reports
Save chemicals, energy, labor
Reduce risks
Ensure a good night’s sleep
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3. Case Studies
Fox River Water Pollution Control Center, Brookfield, WI
Chemical P Removal / P700
Johnson County (KS) Wastewater
Sludge Wasting / ViSolid
Missoula Wastewater Division
Aeration Control / FDO
Littleton – Englewood Wastewater Treatment Plant
Chloramination – ORP, AmmoLyt
New York City Department of Environmental Protection
Denitrification Carbon Dosing Control / NitraVis, NitraLyt
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4. Chemical Phosphorus Removal
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Image courtesy CH2M

5. Fox River Water Pollution Control Center
Brookfield, WI
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Year
Alum (gal.) Alum (tons)
TP effluent
(mg/L) Alum Cost
2013 (before) 99,329 265 0.67 $121,759
2015 (after) 90,379 243 0.72 $104,233

6. Simultaneous Precipitation
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Alum
‘P’

7. Orthophosphate Monitoring System
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8. Orthophosphate Monitoring System
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9. Alum Dosing Control System
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Floating Point Control – timed response, direct acting, deadband,
biased response

10. Alum Dosing Control System
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Image courtesy of Rick Wenzel
Optimization: Increase adjustment down?

11. Alum Dosing Control System
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Image courtesy of Rick Wenzel

12. Tips for Trouble-Free Operation
Keep a spare filter in frame on hand
Rotate the filters through chemical cleaning in bleach
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13. Sludge Wasting
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Flow (Q),
TSS(Xe)Volume (V),
MLSS
RAS, TSS(Xr) WAS,
TSS(Xr)
Biomass in the system Biomass leaving the system÷

14. Douglas L. Smith Middle Basin WWTP
Overland Park, KS
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SRT control for settleability
Better, more consistent performance
2015 NACWA Gold Peak Performance Award

15. TSS Monitoring System
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16. Solids Retention Time Control System
Image courtesy of Marc Pedrotti
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17. Solids Retention Time Control System
Image courtesy of Marc Pedrotti17

18. Tips for Trouble-Free Operation
Build a long-term relationship
Design in measurement reliability
QWASSP = [(MLSSBNR x VOLAB / SRT) - QINF x TSSEFF] / TSSRAS
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19. Cascade Aeration Control
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20. Missoula WWTP
Missoula, MT
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Probe
Maintenance Reliabilty Air flow
Control
Precision
Membrane DO 4 hrs./wk Lower Higher Less
FDO 700IQ 1 hr./wk Higher Lower More

21. DO Monitoring System
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4 bioreactors
5 aerobic cells
16 FDO 700IQ optical DO probes
Images courtesy of Gene Connell

22. DO Control System
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Image courtesy of Gene Connell

23. DO Control System
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Image courtesy of Gene Connell

24. Tips for Trouble-Free Operation
Operator(s) put in charge of probe maintenance
Monitor DO at downstream end of basins (most energy efficient)
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25. Chloramine Disinfection
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Ammonia (NH3):
• is present in WW
• must be removed
• is required for
chloramine disinfection

26. Littleton-Englewood WWTP
Englewood, CO
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Switched to ORP control: Cl2 residual analyzer required continual operator attention.
DPD test kit was getting interference; Difficult to set the proper dosage.
Sodium bisulfite overdosed to assure compliance with chlorine residual limit.

27. ORP Monitoring System
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Images courtesy of Greg Farmer
YSI -
ORP

28. Chloramine Disinfection Control System
Maintain 1.5 mg N/L ammonia to stay out of breakpoint
Maintain Final Effluent E.coli < 126 #/100ml

29. ORP / Ammonium Monitoring System
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Image courtesy of Greg Farmer

30. Tips for Trouble-Free Operation
Redundant sensors
Plant Operators Maintain Instruments (Analyzer Task Force)
• Cleaning
• Calibration
• Parts replacement
• Tracked through Asset Management
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31. 1 mole Ammonia
(NH3 / NH4
+)
1 mole Nitrite
(NO2
-)
1 mole Nitrate
(NO3
-)
1 mole Nitrite
(NO2
-)
1/2 mole Nitrogen gas
(N2)
75% O2
25% O2
40% Carbon
60% Carbon
Aerobic Anoxic
Nitrogen Removal by (Biological)
Denitrification
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32. 26th Ward WWTP
Brooklyn, NY
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Control
Strategy
Effluent TN
(mg N/L)
Carbon
(gal / yr)
Annual
Carbon Cost Savings
Constant 6.3 / 7.5 960,000 $2,387,000
$427,000
Feed Forward 6.4 / 7.9 789,200 $1,962,000

33. Nitrate Monitoring System
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34. Nitrate Monitoring System
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35. Carbon Dosing Control System
Glycerol
Dosage based on nitrate load entering anoxic zone (Feed Forward)
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C
C
C

36. Tips for Trouble-Free Operation
Low nitrate - Optical (NitraVis); High nitrate - ISE (NitraLyt)
Air cleaning to dislodge hair/rags (optical nitrate)
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37. Acknowledgements
Rick Wenzel – City of Brookfield, WI FRWPCC
Doug Nolkemper – Johnson County Wastewater
Marc Pedrotti – R.E. Pedrotti Company
Gene Connell – Missoula WWTP
Greg Farmer – Littleton-Englewood WWTP
Jim Hampson – North East Technical Sales
David Fulcher – YSI Integrated Systems & Services
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38. Case Studies & Solutions
Look for YSI Wastewater Newsletter
before WEFTEC
Web version available:
http://bit.ly/IQcasestudies
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39. Questions?
Web - www.ysi.com/wastewater
Slideshare – www.slideshare.net/YSIinc
YouTube – www.youtube.com/YSIinc
Blog – www.ysi.com/blog
Phone: 1-800-897-4151
Email: info@ysi.com or
robert.smith@xyleminc.com
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