Latham Water District Mohawk View Laboratory Where is Latham NY Latham Water District District was created in 1929 Initial plant completed in 1969 20 MGD capacity 2005 completed 24 Million expansion ID: 1025041
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1. Langelier Saturation Index Study Using Trending for WTP OptimizationLatham Water DistrictMohawk View Laboratory
2. Where is Latham, NY?
3. Latham Water DistrictDistrict was created in 1929.Initial plant completed in 1969 – 20 MGD capacity.2005 completed $24 Million expansion.Increased to 31.5 MGD capacity.Surface water - Mohawk River.5 Wells (GWUDI)Servicing ~ 82,000 residents.~ 24,500 service connections.
4. Latham Water DistrictMohawk View Water Treatment Plant
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6. Mohawk View LabChemical lab area
7. Mohawk View LabBacteria Lab area
8. Pre -WIMS
9. Journey to WIMS
10. Post - WIMSLess clutterBetter organizationMore time to perform lab dutiesTrends become easier to spotLeads to plant optimization
11. Langelier Saturation Index LSI EquationThis Calculation is built into the WIMS!
12. Langelier Saturation IndexCorrosion ControlNegative LSI = Corrosive Water Positive LSI = Scale forming
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14. LSI StudyShut Well field down during Winter months to allow for regeneration. GWUDI.Target Finished Water pH 8.0. 2/25/15 – 4/10/151/26/16 -3/8/16
15. LSI Study - LSI over TimeFebruary – April 2015 January – March 2016
16. Finished Water LSI over timeJanuary – April 2013
17. Finished Water LSI over timeJanuary – April 2014
18. LSI StudyFinished pH vs. LSI2015 Correlation2016 Correlation
19. LSI StudyFinished Alkalinity vs. LSI2015 Correlation2016 Correlation
20. LSI Study - ConclusionsTurning off Wells can alter Finished water enough to cause a negative LSI.Small changes in pH and alkalinity can cause big changes in LSI.Based on these results, when the Well field is off we should raise our target Finished pH to 8.2 - 8.4, therefore, optimizing our corrosion control at our entry point. (Positive LSI)Added LSI as a key performance indicator to operators dashboard.
21. WIMS Benefits
22. Ultimate Goal
23. My Dashboard
24. Chief Operators Dash Board
25. WIMS LabCal Module – Sample Schedule
26. WIMS LabCal Module – Chemistry Data
27. WIMS LabCal Module –Bacteria Data
28. WIMS LabCal moduleProfessional Reports
29. WIMS Reports – Monthly DMR
30. WIMS ReportsMonthly TOC Report
31. WIMS Graphs
32. Trending Graphs
33. WIMS - SCADA Interface
34. WIMS – QC Analysis Report
35. Future Optimization Study - GACHow fast is our GAC spent?Virgin GAC vs. Reactivated GACOrganics Removal (TOC)3 Filters over 3 years with Reactivated GAC
36. Future Optimization Study -Virgin vs. Reactivated GAC
37. Questions?Patty ZappalaLatham Water DistrictLaboratory Director/Water Chemist