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UltraFiltration UF System

UltraFiltration UF System

Ultra filtration is a unique pressure-driven physical separation process in which the water is passed through porous (partially permeable) membranes with pore sizes in the range of 0.1 to 0.01 micron. These membranes are in the form of long hollow fibres. The result is high pure water free from physical and biological contaminations.

UF Water systems designed for a variety of industrial & commercial applications requiring high quality equipment with a fast delivery and competitive price. These pre-engineered, pre-assembled and factory tested units minimize installation and start-up time. With simple utility connections and easy to set up controls, the UF plant is ready for quick on-line service. The control system is an advanced microprocessor based system that is very easy to use.

Features

Ultrafiltration is a low-pressure membrane process used to separate bacteria, viruses, and high molecular weight compounds colloidal and particulate matters from a feed stream. Ultra Filtration Plant has larger pores and high permeability with less osmotic effects that allows Ultra filtration plant to operate at relatively lower pressure than nanofiltration and reverse osmosis and is therefore it is least costly to operate.

High removal efficiency of bacteria and viruses

Periodically back washed and air scoured for consistent performance

Simple, vertical, modular design allows low cost, compact systems

Fully automated control system for backwashing process

High end electrical actuated operating valves.

All alarm and shut down conditions are indicated on the control interface.

Control panel with standard PLC and HMI interface mounted on equipment frame.

Permeate, back pulse pumps, membrane aeration blowers and associated valving mounted on equipment frame

Technology

Treatment of feed prior to the membrane is essential to prevent damage to the membrane and minimize the effects of fouling which greatly reduce the efficiency of the separation. Types of pre-treatment in Ultra Filtration Plant manufacturer are often dependent on the type of feed and its quality. For example in wastewater treatment, household waste and other particulates are screened. Other types of pre-treatment common to many UF plant include pH balancing and coagulation. Appropriate sequencing of each pre-treatment phase is crucial in preventing damage to subsequent stages. Pre-treatment can even be employed simply using dosing points.

Ultra filtration system of Ultra Filtration Plant manufacturer can either operate with cross-flow or dead-end flow. 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. Dead-end configurations are more suited to batch processes with low suspended solids as solids accumulate at the membrane surface therefore requiring frequent back flushes and cleaning to maintain high flux.

Cross-flow configurations are preferred in continuous operations as solids are continuously flushed from the membrane surface resulting in a thinner cake layer and lower resistance to permeation.

Cleaning of the membrane of UF plant is done regularly to prevent the accumulation of foul-ants and reverse the degrading effects of fouling on permeability and selectivity..

Regular backwashing is often conducted every 10 min for some processes to remove cake layers formed on the membrane surface. By pressurizing the permeate stream and forcing it back through the membrane, accumulated particles can be dislodged, improving the flux of the process. Backwashing is limited in its ability to remove more complex forms of fouling such as biofouling, scaling or adsorption to pore walls.

These types of foulants require chemical cleaning to be removed. The common types of chemicals used for cleaning in Ultra Filtration Plant manufacturer are:

Acidic solutions for the control of inorganic scale deposits

Alkali solutions for removal of organic compounds

Biocides or disinfection such as Chlorine when bio-fouling is evident

In high purity water systems, ultra filtration is slowly replacing the traditional 0.2 micron cartridge filters.

An UF filtration has a nominal pore size of 0.003 micron.

Membranes should be cleaned when the system permeate rate drops by 10% or more.

In addition UF membrane is not susceptible to the problem of bacteria growing through them, as is the case with 0.2 micron filters.

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