POREX FILTRATION - IFMifmenviro.com/pdf/...RO_Reject_Side-Stream_Filtration_Using_Lime.pdf ·...
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FILTRATION POREX
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Working in partnership with world leaders in global markets
Innovating with a Materials Science and Engineering focus
Providing structural porous solutions to real world problems
World leader in porous polymer technology
Porex Corporation
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Develop and Manufacture Porous Plastic Components
Advanced Membrane Formulation and Deposition Technology
Complete State-of-the-Art Tooling Advanced Polymer Laboratory Global Capabilities High Volume Technologies Proprietary, Cost Effective
Manufacturing Capability
Global Manufacturing Capability Atlanta – 1 sites Germany – 2 sites
Scotland Malaysia
China – 2 sites 600,000 square feet globally 725 employees worldwide
GROUP PROFILE Porex Corporation
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Tubes and Sheets
Tubular Membrane
PTFE Cartridges
Radial Cartridge
Porex Filtration Cutting Edge Capability
Materials Science
•Polymers/particles •Fibers •Membranes/Coatings •Additives
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Polymer Materials
• Polyethylene (PE) • Polypropylene (PP) • Polyvinylidene fluoride (PVDF) • Polytetrafluoroethylene (PTFE) • Ethyl Vinyl Acetate (EVA) • Nylon (N6) • Polyethersulfone (PES) • Polycarbonate (PC) • Range of other thermoplastics
Porous Structure
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POREX Radial Cartridge Filter is a patented porous plastic cartridge that offers high flow capacity and long service life. The single layer, one-piece finished structure is back-washable and cleanable.
POREX Radial Cartridge Filter
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n, %
Channel, micron
Particle Retention
PSL Beads
AC Fine
FILTRATION EFFICIENCY 5 micron rated filter Initial Retention Efficiency results per ASTM 795-88, based on a single pass using a 2.65” diameter cartridge 10” long, at a flow rate of 3gpm/ft2 of water with ISO Test Dust and Polystyrene beads.
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Sheets and Tubes Sintered porous plastic is molded into
sheets and tubes of various dimensions for assorted filtration applications including filter presses, dewatering pads, dust collection, etc.
Porex Filtration
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Porex TMF Module Tubular Micro Filtration (TMF)
• High Flux Typical operation flux rate 300-500lmh • High solid concentration solids level requirements up to 5% (by
weight) • Excellent Chemical Resistance pH 1-14 • Back-washable at large pressures up to 20 psi easily • Minimal Pretreatment required • Extremely Durable construction
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What is TMF Tubular Micro Filtration (TMF)
• Microfiltration (MF) is a low pressure (0.7 – 7 bar, 10-100 psig) separation process for separation of solids from aqueous solutions by means of a membrane.
• This “crossflow” process is carried out by having a process solution flow along a membrane surface under pressure.
• Retained particulate matter leaves with the flowing process stream and does not accumulate on the membrane surface
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What Do Microfilters Filter? Tubular Micro Filtration (TMF)
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Tubular Micro Filtration (TMF)
• The Porex TMF Membrane modules contain
20 year old applications combined with cutting
edge innovation and materials
• The strongest, most durable and chemically
cleanable membrane product available today
• All PVDF construction can replace many
ceramic membrane products
• Extremely Chemical and abrasion resistant
• Tight membrane pore size control provides
outstanding filtrate quality, SDI (typically less
than 1.0 NTU)
• Large diameter allows very high solids loading
without pretreatment restraints
• More forgiving than hollow fiber
Microfiltration System/Processes
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Tubular Micro Filtration (TMF)
Membrane with nominal pore size of 0.05, 0.1, 0.5, (0.01 soon)
PVDF membrane material
HDPE or PVDF substrate material
Tubular configuration with 1” or 1/2” diameter
Housing materials of PVC, CPVC, SS, all PVDF, other options on request.
Up to 60 C Temperature PE, up to 100 C Temperature PVDF tubes
Materials of Construction
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Membrane/Substrate
• Unique abrasion resistant topography • PVDF membrane with PE or PVDF sintered substrate • Membrane is in the pores of the substrate • Anchored into substrate by full depth entanglement • Also chemically bonded in the all PVDF option
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Typical Microfiltration Wastewater Treatment Process Tubular Micro Filtration (TMF)
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Typical TMF System
Concentration Tank
Back Pulse Column
Circulation Pump
Cleaning Tanks
Coated Steel Frame
Membrane Modules
PVC Piping
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• Photo of Backpulse column
Backwash
• Backpluse • Often PLC controlled • Typically engaged every 5 – 30
minutes (20 is standard). • Used to prevent excessive
solids accumulation on membrane surface
• Filtrate is forced back through membranes using air pressure
• Air must not be allowed to reach membranes
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Porex TMF Sys tem
Membrane module Filtrate tubing Metal clamp Victaulic clamp
U-bend
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Technology Tubular Micro Filtration (TMF)
Typical Membrane Cleaning Chemicals
• Acid: 5-10% H2SO4 or 5-10% HCl solution
(removal of metals)
• Alkaline: 3-5% NaOH solution (removal of
silica, some organics)
• Oxidizers: Acidic solution (mixture of 5-10%
H2SO4 / 3-5% H2O2) Alkaline solution (mixture
of 5-15% NaOCl / 1-3% NaOH) (removal of
organics)
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Elements Removed or Reduced with Membrane Microfiltration
Tubular Micro Filtration (TMF)
Regulated heavy metals (Cd, Cu, Cr, Ni, Pb, Zn.)
Arsenic (As) Fluoride (F) removal Removal of specific contaminants such
as Ba, Mo, Fe, Al, Sn, Ra, phosphates (PO4), phosphorus (P), glass particles (Wafer and glass grinding)
Hardness removal (Ca, Mg) Removal of dyes, pigments Reduction of SO4 BOD5, COD, TOC Pre treat for RO and increased
recovery of RO with chemical softening Removal of oil emulsion from water
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What Can TMF Membrane Achieve? Tubular Micro Filtration (TMF)
Contaminant Influent (mg/L) Membrane Filtrate (mg/L)
Cadmium - Cd 10 - 30 < 0.05
Chrome - Cr 10 - 50 < 0.1
Copper - Cu 20 - 130 < 0.1
Iron - Fe 5 - 100 < 0.1
Lead - Pb 1 - 15 < 0.1
Nickel - Ni 5 - 75 < 0.1
Zinc - Zn 5 - 130 < 0.1
Solids - TSS 10 - 500 < 1.0
Typical Metal Finishing and Printed Circuit Board Applications
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What Can TMF Membrane Achieve? Tubular Micro Filtration (TMF)
Water Softening Applications , Cooling Tower Blowdown, Industrial Process Streams, Petroleum Well Water
Parameter Influent Membrane Filtrate
pH (s.u.) 6.5 - 7.5 10.5 - 11.0
Conductivity (μS/cm)
7,000 - 20,000 3,000 - 15,000
Calcium (mg/L) 200 - 900 1 - 40
Magnesium (mg/L)
100 - 600 1 - 40
Silica (mg/L) 10 - 150 2 - 20
Barium (mg/L) 1 - 40 < 1 - 5
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TMF LABORATORY PILOT UNIT
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• Pilot Testing (laboratory) – Conducted in 2 tube pilot unit using
chemistry determined in screening test
– Determination of filtration flow for sizing of the system
– Confirmation of effluent quality – Determine if foulants can be cleaned
from membrane – 100-500 gallons of sample required – Testing duration is 2-5 days
• Sample is recirculated through system
– Most systems can be designed based on this test.
Laboratory Testing
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• Pilot Testing – Conducted at customers site – Testing is conducted using
chemistry determined in lab tests – Various size pilot units can be used
– all scale up well – Confirmation of effluent quality and
flux rates – Advantages
• Several run and clean cycles • Variation in wastewater
characteristics – Testing duration is 2-8 weeks or
longer if necessary
Field Pilot Testing
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• Water Flow rate: 120m3/h • Operation date: December 2008 • Application: Pre treatment of
surface water, well water and recycling of cooling tower water
• TMF as the pretreatment to RO including RO reject recycle with 95%+ recovery, remainder to crystalizer for ZLD
• Type of membrane: MME3S01613VP
• Number of modules: 120
Power Generation Process Water Pre
Treatment
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• Water Flow rate: 200gpm • TMF as the pretreatment of
discharge to remove the copper, silver, and other heavy metals.
• Type of membrane: MME3S01610VP
• Number of modules: 48
Electroplating Wastewater
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• Water Flow rate: 120m3/h • Operation date: December
2008 • Application: PCB wastewater • Removal of copper, other
metals and COD, BOD as pre-treat to RO
• Type of membrane: MME3S01613VP
• Number of modules: 120
Printed Circuit Board Wastewater
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• Water Flow rate: 2500 lph • Operation date: Nov 2011 • Application: Oily wastewater • TMF as the pretreatment to
concentrate the carrier oil/dye. Permeate recycled via GAC and Ion Exchange filters
• Type of membrane: MMV2005601VP
• Number of modules: 120 expandable to 156
Oil/Water Separation
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• Water Flow rate: 16m3/h • Operation date: January 2011 • Type of membrane:
MME3S01613VP • Number of modules: 18 • To remove heavy metals from
battery recycling waste water , permit levels Cd<0.05, Ni<2.0
• Permeate below measurable limits for Cd and Pd, and 0.436ppm for Ni.
Battery Recycling Plant Waste water
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Hotel laundry wastewater recovery
• Flow rate: 20 m3/hr • Type of membrane:
MME3S01613VP • Number of modules: 24 • Operation date: Sept. 2011 • Application : Wastewater
recovery of laundry waste water including reduction of, COD, BOD iron and detergents.
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Tequila production vinaza (stillage) water
recovery • Flow rate: Pilot system (3gpm) • Operation date: Feb. 2011 • Application : Wastewater
recovery. Pre RO solids removal
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Cooling tower blow down
• Flow rate: 450m3/h • Operation date: April. 2005 • Application : Cooling tower
blow-down • TMF as pretreatment of RO • System recover: 97%
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High salt surface water
• Flow rate: 50m3/h • Operation date: Aug. 2007 • Application : High salt surface
water • TMF as pretreatment of RO • System recover:97%
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Abrasive Polishing and CMP Waste
Tubular Micro Filtration (TMF)
Wastewater reuse for grinding and CMP wastewater reuse
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Summery of TMF Tubular Micro Filtration (TMF)
Proven technology for variety of applications Waste Water Processing
Heavy Metals High Solids Pre RO Increased RO Recovery w LS CMP/Grinding Water Recycle Oil Water Separation Landfill Leachate Processing Laundry Water Recycle Food and Beverage water and
process FGD water recycling Pulp and Paper Chemical Processing Many Others
Chemically Inert to most cleaning and process chemicals