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S.K. Euromarket Ltd
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  5. S.K Euromarket - Membrane Filtration - ...

S.K Euromarket - Membrane Filtration - Reverse Osmosis System

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For applications where a very high quality effluent is required, membrane filtration is the most appropriate technology utilized. Euromarket`s membrane filtration systems range from microfiltration to reverse osmosis (RO) and are custom-made to serve big industrial or commercial applications for: Purification of brackish water, Desalination of sea water, Removal of impurities, bacteria, sugars and small particles.

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Design Criteria

We chose the right type of membranes that suit the influent and the required effluent characteristics. The main parameters that guide the design of a membrane filtration system for a particular application are:
  • The salinity or the concentration of particles / impurities to be removed
  • The flow characteristics of the incoming stream: average flow, peak flow, duration of fluctuations
  • The desired quality of the outgoing effluent stream
  • The available space for installation

Basic System Components 

The basic components of our membrane filtration systems include the follwing:

  • Booster high pressure pump(s)
  • Pressure vessel
  • Membrane modules
  • Product and reject flow meters
  • Pressure gauges and low pressure switches
  • Water quality instrumentation (TDS meter)
  • Coarse pre-filtration (optional)
  • Control panel

All components and pieces of equipment such as booster pumps and membrane modules are sourced by reputable international manufacturers with whom we have long term partnerships.

Vessels and tanks are in-house designed and manufactured to the highest specification standards and with materials and processes fit for each particular application.

Complete skid-mounted turn-key units that can be easily disconnected, relocated and reinstalled are also available upon request.

Membrane filtration is a general term used to describe various liquid-solid separation processes. There is an increasing use of membranes as a result of the great amount of effort that is put into the development of more reliable and more efficient membranes. Nowadays, membrane filtration is a competitive with conventional techniques.
 
Membrane separation technology is based on the use of semi permeable membranes. The operating principle is quite simple: the membrane acts as a very specific filter that will let water flow through, while it retains suspended solids and other substances including living microorganisms. To enhance the effectiveness of the process, water is typically forced to penetrate the membranes under high pressure.

Membrane filtration offers a number of benefits over other water purification technologies:
  • It provides high quality of purified effluent
  • It is a physical process thus it doesn’t need  any chemicals
  • It is a process with low energy consumption. Most of the energy that is required is used to pump liquids through the membrane
  • The operation of filtration systems is a straight forward operation
  • It can perform equally well at low temperatures. This is mainly important because it enables the treatment of heat-sensitive media.
  • Its capacity can be easily expanded
Depending on the permeability of the membranes (that is the pore size and structure), membrane filtration is divided into microfiltration, ultrafiltration, nanofiltration and hyperfiltration (reverse osmosis). Membranes of different permeability are chosen for different needs and applications.

When membrane filtration is used for the removal of larger particles, micro filtration and ultra filtration are applied. Because of the higher pore size of the membranes, productivity in micro and and ultra filtration applications is high, while pressure differences are low.
However, the majority of filtration applications refer to the removal of salts from seawater or brackish water.  In these cases, nano filtration and reverse osmosis (RO) are applied.  Nano filtration and RO membrane filtration are not based on the principle of pore size and particle retention; separation takes place by diffusion through the membrane structure. The pressure that is required to perform nano filtration and reverse osmosis is much higher than the pressure required for micro and ultra filtration, while productivity is much lower


The concept behind membrane filtration is simple enough and the stages involved in the process are few.  In fact, besides the membranes, only a pumping unit is required to boost the pressure of water to a certain level in order to pass from the membranes. After the membranes, filtered water is usually ready to be disposed to the end user.