Permionics Membranes Private Limited

The HFNF Membranes that we bring forth are proprietary thin film oxidant resistant NF membranes. These are widely used for whey deashing & concentration, dyes desalting & concentration, water softening, removal of colour from waste waters and making antibiotics from mother liquors. The features of these membranes are as follows:

• Operating temperatures up to 90 deg C
• Non polyamide and oxidant resistant
• Lower alcohols and chlorinated hydrocarbon compatible
• Low fouling due to high hydrophilicity
• pH tolerance: 2- 12 during operation and cleaning
• Chlorine tolerance: 1 ppm continuous exposure; 100 ppm during cleaning / sanitizing

The HF series of membranes are used for applications like:

• Whey deashing and concentration.
• Dyes desalting and concentration.
• Antibiotics from Mother Liquors.
• Water Softening.
• Color Removal from waste waters.

Key Properties:

• Lower alcohols and chlorinated Hydrocarbon compatible.
• Operating temperatures upto 90 deg C
• Non Polyamide and oxidant resistant.
• pH tolerance: 2- 12 during operation and cleaning
• Chlorine tolerance: 1 ppm continuous exposure; 100 ppm during cleaning / sanitizing.
• Low fouling due to high Hydrophilicity.

The HFUF Membrane that we present our clients with is based on the Ultrafiltration membrane technology and is developed with a thin film oxidation resistant layer. These membranes are acclaimed in the market for their sharper MWCO and higher flux than the comparable basic membranes of the same MWCO. The chief features of these products are as follows:

• These membranes are more rugged than Unmodified PES UF membranes in terms of
• These membranes are available in flat sheet or spiral wound configurations
• Coatings can also be done on tubular or hollow fibre membrane elements
• Chlorine tolerance: 5 ppm continuous; 100 ppm shock cleaning
• Thermal stability: Max 90 deg C operation
• Chemical stability: 2-11 pH in operation and cleaning
• Solvent resistance: Compatible with low mol. wt alcohols
• Cleaning formula: Same as a PES UF membrane

The HPA series Proprietary Membranes that we offer our clients are based on Nano filtration element, which is a process of reverse osmosis. These membranes are extensively used for deashing & concentration of dyes, sugars, polysaccharides and antibiotics. Our array of these products is also used for softening of water, removal of colour from waste streams and reduction of BOD & COD in waste waters. The working of this membrane is mentioned below:

• Divalent cations and anions are preferentially rejected over the monovalent cations and anions
• The membranes depending on the cut off the membrane retain organic molecules in the range of 50 – 400 molecular weights
• This leads to a very interesting unit process option in separation where trhe user will need to separate organics from salts or separate two organics of different molecular weights
• The difference between RO and NF is that in RO, user have almost complete rejection of dissolved salts irrespective of their valences, whilst the rejection of dissolved salts in NF membranes depends on the valence of the cation or anion
• For wastewater treatment applications the NF membranes are specially treated with our proprietary chemicals which would enhance their COD / BOD tolerances
• These membranes are tailored for high organic load and they can treat effluents with COD levels of even 40,000 ppm

The features of these products are:

• The size and dimensions of the HPA series Nano filtration elements are as per internationally available elements, which ensure easy retrofit in any existing system
• Moreover standard pressure vessels of Codeine and Orlite are suitable to house these elements
• In case there are changes in the end connections, the OEM should be able to have the expertise to make adapters to fit the end flange
• Sanitary elements are available on request for food and dairy applications

The other key features of these membranes are as follows:

• Elements retrofit table with other manufacturers pressure vessels and elements
• Elements can operate on extremely high COD / BOD streams like textile dyeing and distillery
• For more information on the range of products available refer pdf file
• pH tolerance between 2 – 12 during operation and cleaning
• Low fouling due to high hydrophilicity
• Low salt rejection at low molecular weight cut-offs, thus allowing operations on high salt concentrations at low pressures
• Available in MWCO ranging from 50 to 500 Daltons
• Available in tape wrap, FRP wrap and sanitary conditions