MEMBRANES

INDIA’S FIRST AND ONLY INTEGRATED MEMBRANE MANUFACTURING FACILITY

Guided by emerging research, and our concern about water becoming a scarce commodity, we embarked on developing membranes in India, commercializing it in 1980. Foraying, not only into the application of membranes for water desalination, but also using membranes for a wide range of process separations, our founder laid the foundation of what Permionics stands for: A complete solution provider across the membrane separation spectrum, with a presence in almost all industry segments where membranes can find their use. Membrane development is a continuous process and that is where we also stand out and that which has enabled us to fulfil our founders vision of being India’s only membrane Production facility.A full-fledged casting and coating facility backed by spiral winding facilities supports our systems manufacturing division to customize our offering to our customers.

Permionics | RO Membranes

HPA Low Fouling RO for waste water

In our Unique Hydrophilized HPA RO membranes which have near neutral charge and smooth surface, the additional coating on the membrane is what makes the difference. Our turboclean design coupled with the HPA membranes are revolutionary operating on high turbidity feeds with high COD and BOD. The best proof is in testing the waters which Permionics has done over the past fifteen years with over 1000 working systems in this space. A comparison with conventional membranes can hardly be made because they just don’t work. Most Low fouling membranes that exist in the market place play with the spacer thickness rather than modifying membrane surfaces which has no advantage or fouling resistance properties. These are available in standard 4040 and 8040 FRP wrapped construction. Uncoated membranes are available for Backwish water treatment.

LP Ultra Low pressure RO

A new series of ultra-low pressure membrane elements for low TDS feed waters operating at half the pressures than the standard BW RO membranes keeping the rejection levels intact. The data below for the 8040 and 4040 elements clearly defines the superior performance of these membranes.

SW Sea Water Desalination

These are extended area sea water membrane elements available in two variants; 1) The uncoated membranes for UF treated sea water; 2) The surface treated membranes for high fouling high TDS waste waters as well as direct sea water desalination applications.

HST High temperature Sanitizable RO Membranes

These are membranes used in Ultrapure water systems as well as in applications where the temperature of feed streams are >50 C and a maximum of 70 C. USP grade water production system is a typical application for these elements where hot water sanitization is required at 80 C. Other applications are where high temperature Ultrafiltration/Nanofiltration permeates need to be polished. These elements are available in caged as well as FRP outer wrap. The polysulfone ATD’s central tube are important elements of this series other feed and permeate spacer.
SUMMARY OF THE RO RANGE OF ELEMENTS

Size Model Name Permeate
Flow rate
(GPD)
Salt
Rejection
Effective Area
FT 2
Test Condition
8″ HPARO 8040 10,500 99.5% 400 225 psi 2000 ppm
NaCl at 25 Celsius
8″ LP 50 8040 9000 99% 400 150 psi 1500 ppm
NaCl at 25 Celsius
8″ SW RO 8040 6500 99.75% 374 800 psi 32000
ppm NaCl
4″ HPA 4040 2200 99.5% 80 225 psi 2000 ppm
NaCl at 25 Celsius
4″ LP 50 4040 2600 99% 80 150 psi 1500 ppm
NaCl at 25 Celsius
4″ SW RO 4040 1500 99.75% 75 800 psi 32000
ppm NaCl

NANOFILTRATION MEMBRANES

Nanofiltration membranes from Permionics are divided into two main chemistries based on their applications and chemical resistance. The HFT series and the HFN series.

HFT NF Membrane for process applications

The HFT series us polyamide chemistry based Nanofiltration membrane available in three molecular weight cut offs at present; 100-150 Dalton; 200-300 Dalton; 300-400 Dalton; 600-800 Dalton. HFT 150 being the tightest of them all, behaves more like a lose RO. So when you need only concentration, it is ideal. All other membranes above that cut off are meant for fractionation or even just concentration. An operating pH range of 2-11 is a significant advantage. Elements are available the following variants:
1. Alcohol Stable
2. High temperature stable
3. Net outer wrap for sanitary application in 8038/3838 sizes
4. Net outer wrap in standard 8040/4040 sizes.

Type MWCO
(Daltons)
MgSO4 Rej.
2000ppm
100psi
NaCl Rejection
500 ppm 100 psi
Glucose
Rejection 5%
feed at 100 psi
Typical Applications
HFT 600 600-800 75-80% 15-20% 65-70% Dyes, API, Peptides,
Polysaccharides,
desalting/Purification
HFT 300 300-400 94-96% 45-50% 92-94%
  • Product concentration,
    from Pharma, Herbal
    & Biobased streams
  • Dye Concentration
  • Dye Bath Recovery
  • Whey de-ashing
  • Brine recovery
  • Alcohol recovery from ML
  • Peptide conc & desalting
  • Separation of API from
    imporities
HFT 200 200-300 97-98% 55-60% 95-97%
HFT 150 100-150 >98% 75-80% 98-99%

ARN Alkali stable Nanofiltration Membranes

These are non-polyamide, cross linked PES membranes that are stable across 0-14 pH up to 20 % NaOH concentration. Moreover these are chlorine sanitizable so are ideal for food and beverage applications. The ability to pass chlorides without much resistance coupled with high divalent salt rejection makes it an excellent membrane for separation of chlorides and sulphates.

Type MWCO
(Deltons)
% Solute Rejection Typical Applications
2000
ppm MgSO4
500
ppm NaCl
1% PEG
600
1000
ppm AI3+
5% Lactose
ARN 600 800-1000 70-75% 10-15% 45-55% Alkaline brine recovery
Spent brine purificationCaustic recovery
ARN 400 300-400 90-95% 30-35% >85% >75% >90%

HFN Acid stable Nanofiltration Membranes

These are non-polyamide, cross linked PES membranes that are stable in mineral acid like Hydrochloric acid, Sulphuric acid and Phosphoric acid. Moreover these are chlorine sanitizable therefore are ideal for food and beverage applications. The ability to pass chlorides without much resistance coupled with high divalent salt rejection makes it an excellent membrane for separation of heavy metals and acids.

Type MWCO
(Deltons)
% Solute Rejection Typical Applications
2000
ppm MgSO4
500
ppm NaCl
1% PEG
600
1000
ppm AI3+
5% Lactose
HFN 600 600-800 80-85% 15-20% >50% 65-70% Color removalSpent brine purification
Whey deashing
Acid, Alkali & Metal recovery
HFN 300 300-400 Min 95% 40-45% >95% >75% >96%

Permionics

Ultrafiltration Membranes

This is yet another unique range of products that Permionics has to offer. Two types of chemistries are available.
1. Surface modified PES                     2. Unmodified PES

HFUF Hydrophilic PES Ultrafiltration Membranes

This is very rugged membrane that has a thin film layer on a polythersulphone backing. It gives the membrane a characteristic high flux and a tight pore structure making it a low cut off UF (~ 5000 Daltons) with PEG 6000 rejection of >95%. Also available in a lower cut off (95% rejection of PEG4000). Alkali stable variant also available.
The applications are:
1. High organic load waste waters are pretreated with this UF
2. Stick water treatment
3. SURIMI Waste water treatment and protein recovery.
4. Colour removal from herbal extracts as a pretreatment to downstream membrane and resins.
5. Whey fractionation
6. Lactose removal from milk
7. Oil water separation
8. Protein separation from alcohol or hydroalcholic extracts
9. Enzyme Concentration & Purification from Fermentation broths / Enzyme Hydrolysate.
10. Concentration and de-ashing of Soya Protein (SPI), Gelatine from collagen extracts.
11. Endotoxin removal from API/ Injectables

Unmodified PES Ultrafiltration Membranes

This series are the unmodified UF membranes available in a range of Molecular weight cutoffs

Type MWCO(Daltons) Solute rejection Typical Applications
UFP 50 75-100KD 90 % of 90 K
PVP
Water
purification
UFP 20 20 KD 85 % PVP 30K Protein removal
GRUF10 10 KD 85 % PEG 8K Enzyme
concentration
GRUF05 5 KD 85 % PEG 6K Enzyme
concentration
Depyrogenation

All membranes are available in flat sheet and spiral wound construction with different variants
Elements are available in the following variants:
1. Alcohol Stable
2. High temperature stable
3. Net outer wrap for sanitary application in 8038/3838 sizes
4. Net outer wrap in standard 8040/4040 sizes.