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1_Evolving

Evolving
technologies.

Optimising a UF system for a
specific application requires a
great depth and breadth
of expertise and experiences.

Applying evolving water technologies.

Ultrafiltration (UF) is a low-pressure driven membrane separation process. It separates particulate matters from soluble components in the carrier fluid (such as water). Unlike microfiltration and reverse osmosis applications, UF technologies continue to evolve rapidly in many fronts. While it has fast been becoming widely acceptable in water industries, the wide spectrum of membrane materials and specifications available today, and the continual evolvement of which, have made optimisation of UF systems less than a straightforward affair.

Applying evolving water technologies

Replacing conventional solid-water
separation processes. UF process produces
consistent product water’s qualities.

There are many types of separation or filtration technologies available for liquid-solid separation purposes. But UF process offers an increasingly wider and more versatile range of applications especially in water industries. It has increasingly been a popular alternative to conventional water and wastewater treatment methods, not only for treating natural water to potable standards, but also for processing water for industrial use, reclamation of wastewater and as a pre-treatment process for Reverse Osmosis (RO) process downstream etc.

UF’s physical separation process of solids from liquid, and its membrane’s fixed pore sizes, offers effective and consistent removal of undesired contaminants from water, and hence produces water with consistent qualities. Whereas the product water qualities through many conventional treatment methods may vary, especially when feed water parameters change.

typical conventional

UF process offers
multiple advantages.

Apart from producing water of consistent qualities, UF process offers many other advantages when compared with conventional water treatment methods. With decreasing costs of UF membrane over time, UF technologies are becoming ideal alternatives to conventional water treatment methods.

  • Less land space required.
  • Less infrastructure needed.
  • Little chemical usage.
  • Modular design for easy expansion.
  • Skid-based systems highly portable.
  • Minimum manpower/human attendance.
  • Consistency in product water qualities.
  • Effective removal of bacteria/viruses and more.
  • Versatile for a wide range of applications.
  • Lower capital and operating costs (subject to other conditions).
poular-UF_trimed

Common UF membrane configurations.

Some UF membranes are commonly applied in spiral-wound, flat-sheet or hollow-fibre configuration. Hollow-fibre (capillary) configuration has been getting greatest popularity in most applications to date. Single-bore hollow fibre is commonly applied worldwide, though some multiple-bore (within a single strand) hollow fibre has been available these days.

Common UF

Removing suspended solids
and pathogens (among others).

UF membranes generally have average pore sizes ranging from 0.0001 to 0.1 microns (or defined as having Molecular Weight Cut-off – MWCO -rate of 50,000 to 200,000 Daltons) and are capable of removing most suspended solids, pathogens (bacteria and viruses) and other contaminants if with 0.01 micron or less pore sizes. The nature of mechanical pressure-driven filtration process helps produce consistent permeate qualities regardless of feed water qualities.

Removing suspended solids

Optimising UF systems involves many factors.

Despite the past advancement of UF membrane materials, however, hollow fibre membrane fouling or breakage (with the exception of PVDF or multiplebore membrane) remain a common problem. Apart from these, optimising a UF system involves many other considerations : feed water qualities, membrane materials and specifications, flow across the membrane surface (and flux to be achieved), permeate qualities required, operating temperature and pressure, backwash frequency etc. Innovative and precise process, technical configuration, control and instrumentation are essential in ensuring that the selected membrane works in tandem with all parts and components to achieve optimal performance.

Optimising UF
Integrity tests

Integrity tests, vigorous
validations and stringent FATs.

Over the years, we have accumulated vast expertise and experiences in the selection of membrane specifications, process innovation, engineering designs, parts’ and components’ configuration, instrumentation and programming to optimise the performance of each and every of our UF systems for the intended applications.

All our systems are subject to comprehensive factory acceptance tests (FAT) or site acceptance tests (SAT) subject to clients’ project requirements. We spare no efforts in ensuring that our UF systems are some of the most excellent investments of our customers.

Make your UF system a worthy investment.

UF is a proven solid-liquid separation technology today, especially for water applications. As it continues to evolve rather rapidly, there exist many choices in terms of membrane materials available, membrane’s pore sizes, configurations of membrane modules, filtration modes applied and so on. But all that you may want is a UF system that simply works for you, produces product water constantly and of consistent qualities, runs 24/7 most of the time, needs least of human attendance, lasts for a long time, and more. Most importantly, it has to be an investment that allows you to focus on your core business, and make more. One that meets all these objectives. One that is from us.

UF-system
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