Microfiltration/Ultrafiltration (MF/UF)

Microfiltration (MF) and Ultrafiltration (UF) are a type of high end physical filtration process where wastewater is passed through a special pore-sized membrane to separate microorganisms and suspended particles from water / wastewater. MF / UF are popularly used as effective pre-treatment where downstream reverse osmosis is used. In combination with reverse osmosis, MF / UF may provide effective degradation of undesired contaminants, rendering it suitable for intended use.

The typical particle size used for MF ranges from about 0.1 to 10 µm. The filters used in the microfiltration process are specially designed to prevent particles such as, suspended matter, algae, protozoa or large bacteria from passing through a specially designed filter. Smaller particles and dissolved ions, may still be able to pass through the filter.

UF membranes are defined by the molecular weight cut-off (MWCO) of the membrane used. UF can be either of cross-flow or dead-end type. In dead-end filtration the flow of the feed solution is perpendicular to the membrane surface. On the other hand in cross flow systems the flow passes parallel to the membrane surface.

Advantages of MF / UF:

  • MF / UF are extremely efficient in providing suitable pretreatment to reverse osmosis.
  • There is no phase change in the process since both feed and product streams remain in the liquid form.
  • The energy requirements are relatively low as compared to the benefits obtained.
  • Modular operation is easily possible making the process highly flexible for capacity up gradation / revamping.

We offer reliable, high-quality custom and packaged membrane process water and wastewater treatment systems to meet the varied requirements of municipal, industrial, commercial and agricultural applications all over the world. Membrane treatment for potable water and industrial applications is one of our areas of expertise. We have complete capabilities in the engineering, design, manufacturing, supply, installation, maintenance, and troubleshooting of systems with capacities from 5 m3 per day to over 50,000 m3 per day.

We have installed MF/UF systems in various industries such as chemical, refineries, dairy, beverages etc. and domestic sewage recycle/ reuse.