Ro Brine Management by igr23038

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									 Membranes for Water and
Wastewater Reuse and Brine
  Management Processes
     Kevin L. Alexander, P.E
    Separation Processes, inc.
           Overview
• Water Picture and
  Membranes
• Municipal Applications
• Municipal Projects
• Industrial Applications
• Industrial Projects
• Concentrate
  Treatment
Water Picture and
  Membranes
    Available Water Sources in
             Arizona
• Surface Water
     – TOC and TDS
•   Groundwater
•   Conventional Reclaimed Water
•   Advanced Water Treatment
•   Conservation
•   Urban Runoff
•   Seawater Offsets
  Current Water Issues and
   Industrial Perspective
• Conservation-No WQ Improvement
• Groundwater Overdraft - Brackish
• Surface Water Fully Allocated
  – TOC/Hardness/Salt Importing
• Alternative Water Supplies
  –   Water Reclamation
  –   Brackish Desalination
  –   Urban Runoff
  –   Seawater Desalination
• SUSTAINABLE WATER
     Membrane Solution

• Allow Production of Engineered
  Water Quality
• Change Conventional Wisdom
  – “Recycle/Reuse” versus “Disposal”
  – Philosophy is to “Produce Water”
    versus “Treat Wastewater”
• Contaminant Removal to Levels
  that allow Use of Water
Municipal Applications
 Surface Water Filtration
                                Chlorine


            Flocculation/
           Sedimentation               MF    Treated
Feed                                          Water




       Backwash
       Processing
                            Backwash


                                            To Solids
                                            Handling
       Surface Water Filtration
          with TDS Control
                                                Chlorine


                Flocculation/
               Sedimentation               MF       RO      Treated
Feed                                                         Water




           Backwash
           Processing
                                Backwash                      Brine


                                                           To Solids
                                                           Handling
             Example Groundwater
               Treatment System


                            VOC Removal                               Chlorine
                            System                                    and Caustic
                                                                                     To JCSD
         Wells
         1-4     Acid
                 and TI
                                      RO System
                                                                                      To Chino


                    Cartridge                                                 Product
                                            Concentrate   Decarbonation
                    Filters                                                    Water
                                            To SARI       Towers
                                                                            Pump Station
Wells                            Ion Exchange
5 - 15                           System




                                            Brine Blowdown
                                            To SARI
       Water Reclamation Process

                                                      Chlorine

                                                                          Chlorine
         Primary      Activated         Secondary                         Contact
         Clarifiers    Sludge            Clarifiers        MF              Basin      Treated
Feed                                                                                   Water




                                  RAS
                                                                 To Solids Handling or Recycle


                                                                  Secondary Effluent to Reuse


                                                                           To Solids Handling


                                                                           To Solids Handling
        Aquifer Recharge

                  Lime Stabilization


       MF    RO          UV/AOP
Feed




                                       Recharge




                                            Brine

                                           Solids
Successful Municipal
   Reuse Projects
    Successful Municipal
       Applications
• Orange County Water District:
  GROUNDWATER
  REPLENISHMENT SYSTEM
• Brisbane, Queensland, Australia:
  WESTERN CORRIDOR PROJECT
Orange County Water
       District
   Ground Water
Replenishment System
 OCWD GWR System Goals
• Replace WF-21
• Drought Proof Supply
• Eliminate Outfall
• Seawater Intrusion
  Barrier
• Minimize Imports
 Reaching for the Future
• Orange County Water District has
  been in forefront of reclamation
  and research for 3 decades.
• WATER
  FACTORY 21
Seawater Intrusion Barrier and
  Aquifer Recharge Quality



        Constituent                   Proposed DHS Limits
Total Organic Content (TOC),                    <0.5
            mg/l                  goal of 0.3 August 2, 2002 Draft
                                   Groundwater Recharge Reuse
                                             Regulations
      Total Nitrogen,                            <5
       (as N), mg/l            proposed <3 mg/l August 2, 2002 Draft
                                   Groundwater Recharge Reuse
                                             Regulations
  Counting on Research
• MF/RO Pilot Research
  Started in early 1990
• MF Pretreatment: Major
  Advancement
• RO Membranes
  – 1992
  – 2000-2003
• UV/AOP Pilot in 2001
          OCWD GWR System
                                                        Kraemer Basin
                                                                Santa Ana River
                                 Fullerton



                     Future Mid-Basin
                     Injection/Recharg             GWR          Santiago Creek
                     e                            Pipeline

                Huntington
                  Beach Seawater
                         Intrusion
                           Barrier       Pumping
     Pacific Ocean
                                         Facilities
                                                      Irvine
Advanced                               OCSD
Water Treatment                      Treatment
Plant                                Facilities
                       Ocean                                            N
                       Outfall
OCWD GRS RO System
Australia: Western
 Corridor Projects
Brisbane: Historical Water
 Storage Reservoir Levels
  Objectives/Highlights

• Remove Power Facilities from
  Surface Supply
• Provide Indirect Potable Water
  Source
• 12 Days from Drain to Drip
• Less Than 2 years for 60 mgd
Western Corridor Recycled
     Water Project
            Goodna     Goodna      Wacol
            WWTP       WWTP        WWTP
           Discharge

                       Oxley      Bundamba
                       WWTP        WWTP      Swanbank
                                               Power
                                              Station
Luggage    Luggage
 Point      Point
 WWTP       AWTP            Bundamba
                              AWTP


Gibson      Gibson
Island      Island
WWTP        AWTP

                                              Tarong
                                              Power
                                              Station


(Future)
 WWTP

                                             Wivenhoe
                                               Dam
     Western Corridor AWTP
           Capacities
                     Bundamba      Gibson      Gibson
           Bundamba    Final        Island      Island    Luggage
AWTP        Stage 1A  Capacity     Phase 1     Phase 2      Point

Capacity       20         60          50         100          70
(ML/d)     (5.3 MGD)   (16 mgd)   (13.2 mgd)   (26 mgd)   (18.5 mgd)


Project                                        Capacity
           September   November   November                November
Start                                          Increase
             2006        2006       2006                    2006
Date                                           Jan 2008


Plant
            August       July     December      Early     December
Startup
             2007        2008       2008        2009        2008
Date
Bundamba AWTP MF System
 Bundamba
AWTP Large
Diameter RO
Industrial Membrane
     Processes
 Successful Applications
• Recycled Water for Refinery and
  Industrial Use
  – WBMWD Chevron Expansion – El
    Segundo, CA
• Water Reuse for High Tech
  – Industrial Water Treatment Facility –
    Chandler, AZ
  Recycled Water for
Refineries and Industrial
           Use
    Low Pressure Boiler Feed

              Membrane     Reverse       IX
              Filtration   Osmosis   Polishing
Secondary
or Tertiary
Effluent
                                                     To Low
                                                     Pressure
                                                     Boilers


                                                    Concentrate

                                                 Backwash Waste
   High Pressure Boiler Feed

              Membrane     First Pass   Second
              Filtration      RO        Pass RO
Secondary                                                  To Low
or Tertiary                                                Pressure
Effluent                                                   Boilers




                                                     Concentrate

                                                  Backwash Waste
West Basin Municipal Water
          District
Chevron El Segundo Refinery
            Background
• El Segundo Refinery Needed Water for Low and
  High Pressure Boilers
• Water Quality Guarantees Required
• WBMWD Pilot Tested to Verify Process
  Performance
• WBMWD used
  Pilot Test Results
  to Validate
  Guarantees
Low & High Pressure Boiler
         Feed
                        Limits for
    Constituent      Chevron Refinery
                       El Segundo
                      LPBF    HPBF
Hardness              <0.3    <0.03
(mg/L as CaC03)
Silica (mg/L)         <1.5     <0.1
Bicarbonate (mg/L)    <27       <3
TDS (mg/L)            <60       <5
       Project Schedule
• Project Piloting – 1999
• Project Design – 2000
• Project Design/Build Construct – 2000
• Project On-Line Date – 2001
     WBMWD Chevron Phase 3 Expansion

                    Sulfuric Acid
              Threshold Inhibitor
            Sodium Hypochlorite
                                                               Decarbonation
            Membrane                              First Pass
            Filtration                               RO
Secondary
                                                                                     To Low
Effluent
                                                                                     Pressure
                                                                                     Boilers
                                      Cartridge
                              Basin
                                        Filter




                                                                  Second
                                                                  Pass RO
                                                                                     To High
                                                                                     Pressure
                                                                                     Boilers




                                                                   Concentrate to Disposal

                                                                            Backwash Waste
    Project Information
• 10 MF Units, (6.0 mgd)
• 2 RO Trains for First Pass
  – 4.6 mgd Product Capacity
  – 85% Recovery
• 3 RO Trains for High Pressure
  Boiler
  – 2.6 mgd
  – 90% Recovery (Concentrate
    Recycled To First Pass)
      WBMWD Chevron:
        Successful

• Six Years:
  – WBMWD facilities have consistently
    met contractual water quality and
    quantity requirements during six
    years of operation.
Water Reuse For High
       Tech
Water Reuse Opportunities
      for High Tech
• Internal Washing Applications
• Cooling Towers
• High Purity Water Supply
• Internal Water Supplies
• Water Offset for Municipalities
High Tech Water Quality

• Common semiconductor fab
  ultrapure water specification can
  include:
  – TOC <5 ppb
  – Boron < 50 ppt
 Reuse Limitations For High
           Tech
• May Require Additional Treatment
  and/or Expense:
  – Important to recognize that reclaimed
    water contains higher concentrations of
    Boron and TOC than traditional feed
    sources.
                So. Cal Potable   Reclaimed Water
                     Water             Source
TDS, mg/L            470               680
Boron, mg/L          <0.2               0.5
TOC, mg/L             <2                10
Case Study: Chandler, AZ
Industrial Process Water
   Treatment Facility
  City of Chandler IPWTF
• Public Private Partnership between Intel
  and City of Chandler
• Constructed in 1995, Operating since
  1996
• Product Water
  Injected into
  Groundwater
  Aquifer to
  Offset Intel
  Water Demand
     Project Highlights
• City Owned and Operated
• Capital and Operating Costs
  Covered by Intel
• 1800 gpm MF/RO System for
  AWN Streams
• 1200 gpm NF System Treats Brine
  from Intel RO
• RO Membranes Reused from Intel
   IPWTF Treatment Process
                  Membrane               Reverse
                  Filtration             Osmosis
  Acid Waste
                                                     To Aquifer
Neutralization
                                                     Recharge
      Streams



                                             Brine   To Wastewater
                                                     Treatment Plant
                        Backwash Waste




                 Nanofiltration

 Concentrate
From Intel RO


                        Brine
Concentrate Issues
             Current Issue
• Available Salt Disposal Methods
  –   Ocean Disposal
  –   Deep Well Injection
  –   Road Spray and Dust Control
  –   Landfill Disposal
• Southern Arizona lacks Natural Salt
  Removal Mechanisms
  – Watersheds do not Flow to Ocean
  – Non-existent Infrastructure for Disposal
       • Ocean Disposal: Arizona Lacks a Disposal Canal
         and Shipping Brine is Impractical
       • ADEQ: No Deep Well Injection Permits – Ever
       • Salt Accumulates in Landfills – can Migrate back
         to Water Systems
Southern Arizona Municipal
  Brine Disposal Studies

• Recent Research Includes:
  – Process Development to Increase
    Water Recovery – Phoenix, Tucson
  – Recoverability Studies of Minerals in
    Brine - Goodyear
  – Feasibility Studies for Deep Well
    Injection - Goodyear
             Summary
• Water Reuse
  – Municipal Membrane Development
    Benefits Industrial Membrane Processes
  – Membranes are Economically Feasible for
    Many Applications
  – Industrial Water Reuse is Economically
    Feasible and Practical
• Brine Disposal
  – Higher Water Recovery is Feasible but also
    Costly and Challenging
  – New Technology is Developmental
  – Current Mineral Extraction Processes are
    Challenging and Costly
Thanks for Attending!
    Kevin L. Alexander, P.E
   Separation Processes, inc.

     950 W. Elliot Rd, Suite 112
         Tempe, AZ 85284
       Phone: 480-302-3348
    kalexander@spi-engineering.com

								
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