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» Flat Sheet Production and Its Application using range of Polymers such As PAN, PS, PES, PVDF in the field of :

  • Pharmaceutical
  • Municipal Sewage
  • Paint
  • Sugarcane Juice
  • Milk and Milk Products
  • Fruit Juice

» UF Membrane

Casting (Manufacturing of membrane)


Spiral Elements of various sizes

Spiral Element

What is ultrafiltration (UF) in terms of membrane filter technology?

Ultrafiltration (UF) is a type of membrane filtration in which hydrostatic pressure forces a liquid against a semipermeable membrane. A semipermeable membrane is a thin layer of material capable of separating substances when a driving force is applied across the membrane. Once considered a viable technology only for desalination, membrane processes are increasingly employed for removal of bacteria and other microorganisms, particulate material, and natural organic material, which can impart color, tastes, and odours to the water and react with disinfectants to form disinfection byproducts (DBP). As advancements are made in membrane production and module design, capital and operating costs continue to decline.

Two types of membrane technologies are developed

  1. Hollow Fiber
  2. Flat Sheet

There are quite a few distinct technical advantages of flat sheet membrane technology over hollow fiber technology however; there are limited manufacturers of such technology throughout the world; however it’s a matter of pride that MEMBRAE FILTERS INDIA; a Pune (Maharashtra) based organization has state of the art manufacturing facility of such flat sheet membrane of the international quality.

Membrane Filtration has technology to make such flat sheet membranes using range of polymers such as

  • PAN
  • PS
  • PES
  • PVDF

Suspended solids and solutes of high molecular weight are retained, while water and low molecular weight solutes pass through the membrane. This separation process is used in industry and research for purifying and concentrating macromolecular (103 - 106 Da) solutions, especially protein solutions. Ultrafiltration is not fundamentally different from reverse osmosis, microfiltration or nano-filtration, except in terms of the size of the molecules it retains.

When strategically combined with other purification technologies in a complete water system, UF is ideal for the removal of colloids, proteins, bacteria, pyrogens, proteins, and macromolecules larger than the membrane pore size from water.

The primary removal mechanism is size exclusion, though surface chemistry of the particles or the membrane may affect the purification efficiency. UF can be used as pretreatment for reverse osmosis systems or as a final filtration stage for deionized water.

The primary advantages of low-pressure UF membrane processes compared with conventional clarification and disinfection (post chlorination) processes are:

  • No need for chemicals (coagulants, flocculates, disinfectants, pH adjustment)
  • Size-exclusion filtration as opposed to media depth filtration
  • Good and constant quality of the treated water in terms of particle and microbial removal
  • Process and plant compactness
  • Simple automation

M/s Membrane Filters (I) Pvt. Ltd is constantly developing through their untiring efforts the UF membrane of

  • various polymers
  • And different molecular cut offs in each polymer

And using these membrane is working on various application industries such as

  • Drinking Water
  • Pharmaceutical
  • Municipal Sewage
  • Milk and Milk Products
  • Sugar Cane Juice
  • Paint

» Spiral Elements

Spiral element sizes

  • 1.5” Dia * 5”
  • 1.5” Dia * 10”
  • 4” Dia * 20”
  • 4” Dia * 40”
  • 6” Dia * 40”
  • 8” Dia * 40”

Different Spiral elements

Spiral Element

What is Spirally Wound Membrane

Spiral wound membranes typically offer the best combination of flux, rejection, packing density, durability, and membrane cost of all different membrane filters. Spiral wound membranes feature cross flow membrane filtration, or tangential flow filtration (TFF) which increases permeate passage through the membrane and reduces the immediate fouling (build-up of solids on the membrane surface that hinder separation) that occurs in conventional filtration.

Membrane Filters (I) Pvt Ltd has manufactured both spiral wound membranes and complete membrane systems since 2004, and our technical expertise spans across a wide range of industries and applications. Contact us for more information on solutions with membrane filters or a complete membrane filtration system.