RICARDO RODRIGUEZ

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(No Transcript)
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FLORIDA INTERNATIONAL UNIVERSITY
TEAM MEMBERS

• RICARDO RODRIGUEZ
• MELANIE STRAUB
• RYON PLANCER
• YURFA GLENNY
• LUIS CRISTIANI
• DARYL HILDOER

PROUDLY PRESENTS
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ANALYSIS INNOVATIVE DESIGN OF A
REVERSE OSMOSIS PRETREATMENT UNIT
FOR OGDEN MARTIN SYSTEMS OF LEE, INC..
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OGDEN MARTIN SYSTEMS OF LEE, INC.
SOLID WASTE RESOURCE RECOVERY FACILITY
BACKGROUND
CONVERTS 1200 TONS/DAY OF WASTE TO ENERGY
RECEIVES WASTE FROM TWO COUNTIES, LEE AND HENDRY
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OBJECTIVES

• REDUCE FOULING OF RO MEMBRANES

• REPLACE PROCESS WATER WITH 100
• RECLAIMED WATER

• REMAIN COST EFFECTIVE

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OUTLINE OF PRESENTATION
I. INTRODUCTION
A. BACKGROUND
B. OBJECTIVES
II. FRAMEWORK
III. EXISTING CONDITIONS
IV. FUTURE CONDITIONS
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OUTLINE OF PRESENTATION
V. RO PRETREATMENT ALTERNATIVES
VI. ALTERNATIVE REVERSE OSMOSIS PRETREATMENT
DESIGN
VII. PRESENT VALUE ANALYSIS
VIII. CONCLUSION
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FRAMEWORK

• ZERO DISCHARGE FACILITY

• ENVIRONMENTAL REGULATIONS
• DO NOT PERTAIN TO OGDEN MARTIN

• INCREASE THE AMOUNT OF RECLAIMED
• WITH 100 RECLAIMED WATER

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FRAMEWORK

• LOWER SDI VALUES TO LESS THAN 5 ppm

• EXISTING RO UNIT CAN HANDLE A
• FLOW OF 100 GPM

• A MAXIMUM PAYBACK PERIOD OF
• 2-3 YEARS IS REQUIRED

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EXISTING CONDITIONS
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EXISTING CONDITIONS

• UNUSED CARBON ADSORPTION UNIT
• COSTS 250,000 TO RE-IMPLEMENT

• 2-5 MICRON FILTERS WHICH CONSISTS
• OF 8 SPIRAL, COTTON FILTERS

• RO UNIT IS USED ONCE A MONTH FOR
• MAINTENANCE REASONS

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EXISTING CONDITIONS

• THE DEMINERALIZER THEN
• RECEIVES 50 GPM FROM THE
• RO UNIT

• THE REMAINDER OF THE WATER IS
• DIVIDED BETWEEN THE COOLING
• TOWER AND THE RO REJECT

• FINALLY THE WATER WILL BE FED
• INTO THE BOILER

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FUTURE CONDITIONS

• THE ORIGINAL 5 MICRON FILTER
• BECOMES A PRE-FILTER

• A MF UNIT WITH A O.2 MICRON
• CELLULOSE ACETATE MEMBRANE

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FUTURE CONDITIONS

• MORE ADVANCED, COST EFFECTIVE,
• AND IMPROVED MEMBRANES

• OUTSOURCING CAN BE IMPLEMENTED

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FUTURE CONDITIONS
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RO PRETREATMENT ALTERNATIVES
CONSIDERED ALTERNATIVES

• OZONATION
• ULTRAFILTRATION
• MICROFILTRATION
• CARBON ADSORPTION
• MULTIMEDIA FILTRATION
• COAGULATION FLOCCULATION

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RO PRETREATMENT ALTERNATIVES
RATING ALTERNATIVES CRITERIA
WEIGHTED SUM METHOD METHOD

• TECHNICAL (10)
• ENVIRONMENTAL (6)
• ECONOMIC ASPECTS (10)
• SPACE AVAILABILITY (6)
• SAFETY (6)
• INNOVATION (5)

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RO PRETREATMENT ALTERNATIVES
WEIGHTED SUM METHOD RESULTS
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RO PRETREATMENT DESIGN
INTRODUCTION

• ENGINEERING SPECIFICATIONS
• FOR MICROFILTRATION

• SELECTION OF MICROFILTRATION
• MEMBRANES

• COST IS THE DRIVING FORCE OF THE
• DESIGN CRITERIA

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RO PRETREATMENT DESIGN
NEED FOR PILOT PROGRAM

• REAL WORLD RESULTS FOR SPECIFIC
• TASK

• SOUND ENGINEERING PRACTICE

• SOME UNCERTAINTIES IN FILTERED
• WATER COMPOSITION

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RO PRETREATMENT DESIGN
MICROFILTRATION BACKGROUND

• ONE OF THE SIMPLEST MEMBRANE
• SEPARATION PROCESS

• MEMBRANE PORES RANGE FROM 0.1-
• 20 MICRONS

• LOW PRESSURE MEMBRANE FILTRATION

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RO PRETREATMENT DESIGN
MICROFILTRATION MEMBRANES

• CELLULOSE ACETATE

• POLYAMIDE

• CERAMIC

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RO PRETREATMENT DESIGN
TWO MODULES OF OPERATION

• CROSS FLOW

• DEAD-END FLOW

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RO PRETREATMENT DESIGN
CROSSFLOW

• CAKE-LAYER DOES NOT BUILD
• INDEFINITELY

• EFFECTIVE IN CONTROLLING
• CONCENTRATION-POLARIZATION AND
• ASSOCIATED CAKE BUILD UP

• HIGH FLUXES MAINTAINED OVER
• PROLONGED TIME PERIODS

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RO PRETREATMENT DESIGN
DEAD END FLOW

• HIGH CAKE-LAYER BUILD UP

• UNIT MUST BE STOPPED
• PERIODICALLY FOR PARTICLE
• REMOVAL OR FILTER REPLACEMENT

• BY NATURE A BATCH PROCESS

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RO PRETREATMENT DESIGN
MOST COMMON MODULES OF MATERIALS AND GEOMETRY

• HOLLOW-FIBER

• PLATE-AND-FRAME

• SPIRAL

• TUBULAR

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RO PRETREATMENT DESIGN
BASIS OF DESIGN

• 50 PARTICLES FROM 0-1 MICRONS

• SDI IS CALCULATED FROM RATE OF
• PLUGGING OF A 0.45 MICRON
• MEMBRANE FILTER

• SELECTION OF 0.2 MICRON HOLLOW
• FIBER CELLULOSE ACETATE MEMBRANE

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RO PRETREATMENT DESIGN
SPECIFICS FOR SIZING CALCULATIONS

• 60-70 RECOVERY RATE (R)

• OPERATES AT 25 PSI, PUMP
• VELOCITY 15-17 FT/S

• LAMINAR FLOW NEEDED

• SURFACE AREA IS 360 FT2 PER
• ELEMENT OF 1 METER IN LENGTH

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RO PRETREATMENT DESIGN
SPECIFICS FOR SIZING CALCULATIONS
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RO PRETREATMENT DESIGN
SIZING CALCULATIONS

• EACH MODULE CONTAINS 6 ELEMENTS, 48/6 8
  MODULES

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RO PRETREATMENT DESIGN
pH OPTIMIZATION AND ANTISCALANT

• pH FOR FILTER WATER HAS AVERAGE OF 7.6

• BRING pH DOWN TO 5.5 (RULE OF THUMB
• IS TO LOWER ALK. BY 80)

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RO PRETREATMENT DESIGN
pH OPTIMIZATION AND ANTISCALANT

• ALKALINITY FOR FILTER WATER
• 141 ppm CaCO3

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RO PRETREATMENT DESIGN
pH OPTIMIZATION AND ANTISCALANT

• CONVERSION FACTOR OF
• 120 FOR ppm lbs/kgal

• STANDARD ADDITION OF ANTISCALANT
• TO TREAT FOR MEMBRANE SCALANT IS
• 5ppm 5ppm/120 0.041 lb/kgal

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COST ASSESMENT

• CRITERIA TO BE CONSIDERED
• REQUIRED RETURN PERIOD OF 2-3 YEARS
• AVAILABLE CAPITAL INVESTMENT
• 70,000/YEAR DURING 3 YEARS LAPSE.
• MICROFILTRATION MEETS OUR
• COST REQUIREMENTS

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COST ASSESMENT
MICROFILTRATION SYSTEM PHASE I
INITIAL CAPITAL COST
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COST ASSESMENT
FIRST YEAR OF IMPLEMENTATION
TOTAL INVESTMENT FOR IMPLEMENTATION OF DESIGN
96,100.00
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COST ASSESMENT
COST AFTER IMPLEMENTATION
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COST ASSESMENT
SAVINGS BY USING 100 RECLAIMED WATER 47,000.00
TOTAL PHASE I COST 127,600.00
AFTER CALCULATIONS RETURN PERIOD FOR RO
PRETREATMENT SYSTEM 2.7 YEARS
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AN INNOVATIVE SOLUTION
FOR A PLIGHT TODAY

• THROUGH IN-DEPTH INVESTIGATION
• MICROFILTRATION IS THE BEST SOLUTION

• MICROFILTRATION
• RELIABLE
• CAPABLE
• COST EFFECTIVE
• INNOVATIVE

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ACKNOLEDGMENT
Dr. David Shen, Ph. D, P.E., Chairman FIU Civil
and Environmental Engineering Department Ken
Reardon, P.E., Student Activities Chairman,
FWEA Mark Mattina, P.E., Ogden Martin
Representative Jaime E. Staton, Applications
Chemist, ECOLOCHEM INTERNATIONAL, INC. Mr. Jeff
Dunn, WATERLINK Pure Water Division, West Palm
Beach Mark Drummund, E.I. Mr. Bill Messer, CHEM
TREAT INC. Professor Sanchez, Presentation
Advisor
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INNOVATIVE SOLUTION
MICROFILTRATION PREVAILS ABOVE OTHER ALTERNATIVES