rajni patel gopani product systems 13 th sep. 2013
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• Rajni Patel• Gopani Product Systems• 13th Sep. 2013
• 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
Porex Corporation
Global Facilities Support an Efficient Supply Chain And Provide Manufacturing Redundancy
Brings unique product solutions to high-solids filtration and separation applications, utilizing proprietary materials and membrane technology.
What is TMFTubular 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
Why the Porex TMF Membrane is Better
• 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 PVDF/PVDF option
Tubular Membrane Filter Module (TMF)
Membrane with nominal pore size of 0.05, 0.1, 0.5
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 43°C Temperature PE, up to 80°C Temperature PVDF tubes (continuous operating temperature)
• The Porex TMF Membrane is Unique and
Proprietary
• An efficient filter for high solid and liquid
separation
• Chemical and abrasion resistant membrane
• Low SDI (typically less than 0.5 NTU) allows for
further processing
• 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• Backwashable Unique membrane anchor points
allowed backwash • Minimal Construction Materials• Simple system design minimized the
construction cost.
Typical Microfiltration Treatment Process
Typical Applications and Results
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
Fluoride – Fl 10-500 <5.0
Solids - TSS 10 - 500 < 1.0
Typical Metal Finishing & Printed
Circuit Board Applications and Results
What Can TMF Membrane Achieve?
Tubular Micro Filtration (TMF)
Water Softening Applications ,Cooling Tower Blowdown, Industrial Process Streams, Petroleum WellWater
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 - 10
Magnesium (mg/L)
100 - 600 1 - 10
Silica (mg/L) 10 - 150 2 - 20
Barium (mg/L) 1 – 40 < 1 - 5
Features Benefits
Superior Filtrate Quality – MF/UF barrier filtration - < 1.0 ppm SS and 0.1 ppm metals are typical
Can meet strict discharge regulations or feed directly to RO without additional treatment (reuse/recycle wastewater)
Can feed directly to RO without additional treatment
Reduces overall system capital cost and space requirements
No need for Polymer addition Saves money and time. Reduces overall sludge volume
Operates at broad temperature range No system upsets with temperature variations – saves operator time and reduces system downtime
Can easily handle 2-5% solids Produces less slurry and better filter press performance
Most durable membranes on the market
Best investment – holds up to abrasives, strong chemical cleaning, backpulse
Features Benefits
Automated system and easy On/Off operation
Saves operator time, more consistent operation and filtrate quality
Pre-treatment chemistry easily accomplished with readily available chemicals
No need for special or “exclusive” chemicals – saves money and allows choice in sourcing (OEM can supply)
Recirculation increases stoichiometric process of pretreatment chemistry
Less chemical addition, greater removal efficiency
Small footprint More space required
No additional post treatment Sand Filter/Multi Media Filter required
Membrane is a positive barrier reducing solids passage
Increased RO performance and decreased RO cleaning frequency
Porex TMF Hollow Fiber MF/UF
Strong durable membrane tubes Fiber can be fragile and break
Can be chemically cleaned with organic acids, caustic and strong oxidizers
Often limited to low concentrations of caustic and oxidizers
Can handle solids loadings up to 5% Limited to several hundred ppm solids
Can handle influent streams with aggressive abrasives
Abrasives can break fragile fibers requiring replacement of the module
Backpulse system does not create additional liquids requiring treatment
Backwash water must be treated or disposed of
High flux rates of several hundred lmh
Typical flux rate 50 lmh
Concentration Tank
Back Pulse Column
CirculationPump
Cleaning Tanks
CoatedSteel Frame
Membrane Modules
PVC Piping
• 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
TechnologyTubular 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)
Chemicals Used in MF treatment
Tubular Micro Filtration (TMF)
Typical pretreatment chemicals
Precipitants
◦ Calcium chloride – fluoride or phosphate removal,
◦ Magnesium chloride – silica removal
◦ Sodium Carbonate – calcium removal
pH adjustment
◦ Sulfuric acid (H2SO4), hydrochloric acid (HCl), sodium hydroxide (NaOH), lime (Ca(OH)2)
Oxidizing Agents◦ Hydrogen peroxide (H2O2), bleach
(NaOCl) Reducing Agents
◦ Sodium metabisulfite (Na2S2O5), sodium bisulfite (NaHSO3)
Water Flow rate: 120m3/h
Operation date: December 2008
Type of membrane: MME2S01613VP
Number of modules: 120
Flow rate: 450m3/h Operation date:
April. 2005 System recover :
97%
• Flow rate: 50m3/h• Operation date: Aug.
2007• Application : High salt
surface water• System recover : 97%
Location: China •Operation date: November 2011•Water Flow rate: 150m3/h (capacity 500m3/h)•Removal of copper for reclaim; recycle filtered water to RO•Type of membrane: MME3S01613VP•Number of modules: 144•Result: SDI less than 1. All filtrate recycled after RO treatment
RANGE OF PRODUCTS
SELF CLEANING FILTERSSS FILTER HOUSING
UPVC Cartridge & Bag Filter Housing FILTER CARTRIDGE
Thank You
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