Ultrafiltration

Method

Method Principle

Water ultrafiltration technology provides excellent removal of suspended particles larger than the membrane pores, including colloids, solids, bacteria (coliform bacteria, enterococci), cysts (oocysts), Cryptosporidium and Giardia.

Depending on the requirements of each system, ultrafiltration membranes are typically used as the final treatment stage of wastewater treatment (tertiary treatment) providing higher quality effluent and better operation parameters than conventional treatment methods; or as the pre-treatment stage of reverse osmosis desalination systems on occasions where the intake water contains elements that have high clogging potential.

Of equal importance is the use of ultrafiltration membranes for industrial wastewater recovery, reuse, and recycling.

SYCHEM S.A. group of companies has implemented the most significant and largest capacity ultrafiltration systems in Greece. Indicatively, we mention the largest ultrafiltration membrane system country-wide, with a total capacity of 10.000m3/day, installed at the MOTOROIL HELLAS Oil Refineries in Corinth as a pre-treatment stage to the desalination system, also designed, built, and installed by SYCHEM S.A.

The use of ultrafiltration membranes for seawater pre-treatment provides constant supply of high quality filtered water for the subsequent reverse osmosis desalination system, enables the operation of the desalination system with a high recovery ratio of produced water from raw water, thus achieving the optimum operation of the desalination system and significant reduction of the total required area.

Another major application is the design and installation of the largest ultrafiltration-reverse osmosis (UF-RO) plant in Greece, for the recovery and reuse of the wastewater treatment effluent at the Hersonissos Municipal Wastewater Department in Crete with a total capacity of 600m3/day.

The use of ultrafiltration as final wastewater treatment achieves effluent quality suitable for irrigation without limitations for direct human contact, as per the national legislation regulations.

The combination of ultrafiltration and reverse osmosis results in treated wastewater effluent quality that meets potable water specifications, rendering it suitable for a wide range of irrigation applications (such as golf course irrigation) or industrial applications.

Technology

Advanced Ultrafiltration Systems

The term “advanced” systems refers to the integration of a series of traits that attribute to the system a reliable and economical operation with the use of modern equipment and technologies.

These traits include the following:

  • Smart electronic control with the use of a PLC and digital touch screen
  • Remote control and monitoring
  • Frequency inverters for the optimum control of the backwash pumps.
  • Mechanical equipment by world-wide recognized manufacturers (Norit X-Flow Holland, Grundfos, Danfoss Demnark, Siemens, WTW, Krohne, TecSis Germany, Praher Austria)

Support

Technical Support

SYCHEM owns and operates a manufacturing facility for the assembly and maintenance of desalination units, located at the industrial park in Heraklion, Crete. SYCHEM also permanently employs trained and specialized technicians in Athens as well as in Crete. By providing these services, SYCHEM can ensure the immediate intervention and service for any potential failure, as well as the resources for continuous and organized staff training at each installation during the operation of the system.

Warranty / Assurance

Warranty

SYCHEM systems’ high quality of design and construction, along with the expertise relating to each application allows for the provision of comprehensive warranties, and specifically:

  • 2-year warranty on all the mechanical equipment with instant and on-site replacement of defective parts.
  • 3-year warranty on the ultrafiltration membranes
  • 5-year warranty on the piping network

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