2009-02-17 Seminar - City of Sugar Land - Surface Water Conversion

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Jessie, PhD, PE, City of Sugar Land, TX and Sunil Kommineni, PhD, BCEE, Malcolm Pirnie, Houston, TX discuss the City's plans to meet the Fort Bend Subsidene District's mandated reduction of groundwater use by treating water from Oyster Creek.

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2009-02-17 Seminar - City of Sugar Land - Surface Water Conversion

  1. 1. City of Sugar Land: Surface Water Conversion, Conversion, Pilot Testing and Conceptual Design Jessie Li, PhD, PE, City of Sugar Land, TX Sunil Kommineni, PhD, BCEE, Malcolm Pirnie, Houston, TX
  2. 2. Jessie Li PhD J i Li, PhD, PE Sunil K S il Kommineni, PhD, BCEE i i PhD Public Utilities Assistant Director Associate City of Sugar Land Malcolm Pirnie
  3. 3. Team Effort • SuEllen Staggs •HHoward Ch i ti d Christian • Timothy Jahn • Shashi Kumar • Chris Canonico • Brent Nicholas • Yue Sun • Trent Slovak • Gary Rabalais • Dhananjay Mishra
  4. 4. Background g Fort Bend Subsidence District has mandated reduction of groundwater use by 30% by 2013 60% by 2025 City of Sugar Land p y g plans to meet this requirement by building a surface water treatment plant of p 9 mgd initial capacity 22 mgd ultimate capacity
  5. 5. Source Water Source water is Oyster Creek water which is a man- y made creek that receives water from Brazos River. Groundwater Oyster Creek Water
  6. 6. Tu urbidity (NTU) 100 200 300 400 500 600 0 5/15/07 6/14/07 7/14/07 8/13/07 9/12/07 1 10/12/07 1 11/11/07 1 12/11/07 (TOC, Color) Natural Organic Matter TOC (mg/L L) 1/10/08 0 1 2 3 4 5 6 7 8 9 6/17/07 2/9/08 3/10/08 8/6/07 4/9/08 9/25/07 5/9/08 11/14/07 1/3/08 2/22/08 4/12/08 6/1/08 Source Water Challenges Suspended Solids & 7/21/08 Particulates (Turbidity) 9/9/08 10/29/08 12/18/08
  7. 7. Source Water Challenges (cont.) Microbial risk factors of source water Wastewater effluents W ffl Agricultural runoff Livestock influence Storm water discharges Parameter Units Average Maximum Heterotrophic MPN/ mL 670 740 Plate Counts Total Coliforms MPN/100 mL 2,420 2,420 Microbial Quality - Coliforms, Pathogens Fecal Coliforms MPN/100 mL 180 689 Giardia cysts/L 0.15 0.35* Cryptosporidium oocysts/L 0.27 0.4* *Data from the monitoring location ten miles upstream of Sugar Land Intake Location
  8. 8. Source Water Challenges (cont.) 300 30 MIB Geosmin Geosmin (ng/L) 250 ng/L) 200 20 MIB (n Aesthetic Quality 150 - Taste and Odor Compounds 100 10 50 0 0 5/15/07 6/14/07 7/14/07 8/13/07 9/12/07 1/10/08 2/9/08 3/10/08 10/12/07 11/11/07 12/11/07 800 700 Brazosport Water Authority Brazos River Authority-US290 @ Hempstead 600 Gulf Coast Water Authority 500 L) Chloride (mg/L Upstream Location Aesthetic Quality 400 State SMCL - Chloride, TDS 300 200 100 0 Aug-89 Aug-90 Jan-03 Jan-04 Jun-93 Jun-94 Feb-01 Feb-02 Nov-06 Nov-07 May-95 May-96 Mar-99 Mar-00 Sep-87 Sep-88 Jul-91 Jul-92 Apr-97 Apr-98 Dec-04 Dec-05
  9. 9. Process Selection Accounted for Source Water Challenges Oyster Creek Treatment Plant Customer Tap Dynamics of source water, treatment, distribution system, and future regulations we e co s de ed in p ocess se ec o d u u e egu o s were considered process selection
  10. 10. Surface Water Treatment Processes Chlorine dioxide Chlorine dioxide Chl i di id Chloramines PACl Fluoride Caustic From Oyster To Distribution Creek System PLATE MF/UF CLEAR DISINFECT DISINFECT‐ RAW WATER RAPID GAC ION BASIN MEMBRANE CLARI- RESERVOIR -WELL MIX CONTACTORS FILTRATION FIER RO BACKWASH CLARIFIER INDEX Brine Disposal Liquid Streams RESIDUALS HANDLING Solid Streams Future Treatment Option BELT PRESS/CENTRIFUGE To Off-site Disposal Solids
  11. 11. Surface Water Treatment Processes PARTICULATES / PATHOGENS Chlorine dioxide Chlorine dioxide Chl i di id Chloramines PACl Fluoride Caustic From Oyster To Distribution Creek System DISINFEC MF/UF CLEAR PLATE RAW WATER RAPID GAC TION RESERVOIR MEMBRANE -WELL CLARI- MIX CONTACTORS BASIN FILTRATION FIER RO BACKWASH CLARIFIER INDEX Brine Disposal Liquid Streams RESIDUALS HANDLING Solid Streams Future Treatment Option BELT PRESS/CENTRIFUGE To Off-site Disposal Solids
  12. 12. Surface Water Treatment Processes COLOR / TASTE AND ODOR Chlorine dioxide Chlorine dioxide Chl i di id Chloramines PACl Fluoride Caustic From Oyster To Distribution Creek System MF/UF DISINFECT DISINFECT‐ CLEAR PLATE RAW WATER RAPID GAC MEMBRANE ION BASIN RESERVOIR -WELL CLARI- MIX CONTACTORS FILTRATION FIER RO BACKWASH CLARIFIER INDEX Brine Disposal Liquid Streams RESIDUALS HANDLING Solid Streams Future Treatment Option BELT PRESS/CENTRIFUGE To Off-site Disposal Solids
  13. 13. Surface Water Treatment Processes CHLORIDE Chlorine dioxide Chlorine dioxide Chl i di id Chloramines PACl Fluoride Caustic From Oyster To Distribution Creek System PLATE MF/UF CLEAR DISINFECT DISINFECT‐ RAW WATER RAPID GAC ION BASIN MEMBRANE CLARI- RESERVOIR -WELL MIX CONTACTORS FILTRATION FIER RO BACKWASH CLARIFIER INDEX Brine Disposal Liquid Streams RESIDUALS HANDLING Solid Streams Future Treatment Option BELT PRESS/CENTRIFUGE To Off-site Disposal Solids Chloride Management Strategy Considers Bl di C id Blending as well as ll Treatment
  14. 14. Pilot Testing Objectives g j Meet TCEQ requirements Qq Validate selected treatment process Establish design/operating criteria for “right sizing” of it i f “ i ht i i ” f processes Obtain operator and public b db input
  15. 15. Full- Full-scale vs. Pilot Treatment Comparisons Full-scale Plant Pilot Plant Treatment Processes Treatment Processes Pre- Pre-sedimentation (>1-day (>1- Raw Water Tank (10 min HRT) HRT) Pre- Pre-oxidation (w/ClO2) Pre-oxidation (w/ClO2) Pre- Plate Clarifier Plate Clarifier MF/UF Membranes MF/UF Membranes GAC Contactors GAC Columns RO Membranes RO Membranes Primary and Secondary Beaker Tests for Disinfection Disinfection Decay and SDS-DBPs SDS-
  16. 16. Plate Clarifier Results
  17. 17. Membrane Pore Size Overview Suspended solids Dissolved salts Colloids Viruses Bacteria Parasites Org. macro. molecules 100μm 0.0001 0.001 0.01 0.1 1 10 smallest Crypto- polio virus hair micro- sporidium organism Ceramic Membranes Reverse Osmosis Sand Filtration Ultrafiltration Nanofiltration Microfiltration
  18. 18. MF/UF Membrane Configurations Cartridge Membrane System Suppliers: Pall, Siemens and Koch Filtered Membrane Pressure Raw Vessel(s) Pump P Pump supplies positive pressure to DRIVE water through membrane media. Submerged Membrane System Suppliers: GE-Zenon, Siemens and Norit GE- Raw Membrane Filtered Open Tank Pump Pump suction PULLS water through membrane media.
  19. 19. Piloted MF/UF Systems y Pall’s Pressure MF GE-Zenon’s Submerged UF Siemens Pressure UF
  20. 20. MF/UF Testing Program Pilot T t D ti Pil t Test Duration – ~120 days 120 d Stage 1 – 30-day Optimization Stage 2a – 30 day Demonstration 30-day Stage 3a – 10-day Repeat Demonstration Stage 2b – 30-day Demonstration 30 day Stage 3b – 10-day Repeat Demonstration Stage 4 – Process Upset g p
  21. 21. MF/UF Optimization Test Results
  22. 22. MF/UF Demonstration Test Results Flux: 60 gfd Mini Clean Interval: 72 hr
  23. 23. MF/UF Pilot Test Summary Parameter Siemens UF GE-Zenon UF Pall MF System System System Flux (gfd) 60,60 55, 55 50,47 Threshold TMP (psi) 43.5 43 5 23 13 Backwash Interval (min) 25 25 28 Mini Clean Interval (hr) 48, 72 48, 48 48, 48 Mini Clean Recipe 500 mg/L chlorine 200 mg/L Chlorine 100 mg/L Chlorine/ 1 g/L Citric Acid 30 Day Testing Results Passed, Passed Conditional Approval, Failed, Failed (Pass/Fail) Passed
  24. 24. Ch hloride (mg/L) ( 1 100 10000 10 1000 7 7/11/08 7 7/18/08 7 7/25/08 8/1/08 Hurrican ne 8/8/08 8 8/15/08 8 8/22/08 8 8/29/08 9/5/08 9 9/12/08 9 9/19/08 Hurrican ne 9 9/26/08 1 10/3/08 10 0/10/08 10 0/17/08 10 0/24/08 RO Chloride Results 10 0/31/08 RO Feed RO Reject RO Reject 1 11/7/08 RO Permeate 11 1/14/08 11 1/21/08 11 1/28/08
  25. 25. GAC Pilot Tests Candidate Granular Activated Carbons Source Mesh Size Manufacturer Product Name Material (US Sieves) Calgon Carbon Filtrasorb® 400 Bituminous 12 x 40 Norit Americas GAC 400 Bituminous 12 x 40 Siemens Water AquaCarb® 1240 Bituminous 12 x 40 Technologies PICA America Picahydro F22 Bituminous 12 x 40
  26. 26. GAC Pilot Test Results 35 Calgon 30 Norit PICA 25 Siemens MIB (ng/L) Background MIB 20 15 MIB Results 10 5 0 8/1/2008 8/8/2008 9/5/2008 10/10/2008 10/17/2008 10/24/2008 10/31/2008 11/14/2008 7/11/2008 7/18/2008 7/25/2008 8/15/2008 8/22/2008 8/29/2008 9/12/2008 9/19/2008 9/26/2008 10/3/2008 11/7/2008 5 GAC 1 (Calgon) 4.5 GAC 2 (Norit) GAC 3 (PICA) 4 GAC 4 (Siemens) 3.5 MF/UF Filtrate L) TOC (mg/L 3 TOC Results 2.5 2 1.5 1 0.5 0 7/15/2008 8/4/2008 8/24/2008 9/13/2008 10/3/2008 10/23/2008
  27. 27. Full- Full-scale Plant Location Gannoway Lake
  28. 28. Proactive engagement of community is critical for the success of the project
  29. 29. Questions Jessie Li jli@sugarlandtx.gov (281) 275-2450 275 2450 Sunil K S il Kommineni ii skommineni@pirnie.com (713) 960-7406

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