News Releases 2016Siemens to use Meidensha’s ceramic flat-sheet membrane for the first time in newly developed PACT® MBR system

Meidensha Corporation (CEO Yuji Hamasaki; Shinagawa, TOKYO) today announced that the company’s ceramic flat-sheet membrane has been accepted by Siemens Water Solutions for use in its new PACT® Membrane Bioreactor (MBR) used for waste water treatment in the oil refinery and petrochemical industries, and other challenging wastewater treatment environments. The next generation PACT® system, set to be marketed around the globe, produces best-in-class wastewater treatment effluent quality, allowing industrial end users to employ sustainable water reuse programs to further reduce pollutant impacts on receiving waters.

This application of our ultrafiltration technology is a part of Meidensha’s efforts to meet the growing need to treat challenging wastewaters—brought about by the burgeoning global population and rapid industrialization—thus helping improve people’s quality of life.

Siemens’ PACT® MBR is the next generation powdered activated carbon-based wastewater treatment system that provides biological/physio-chemical/and ultrafiltration technology into a single, compact system. After extensive testing, Siemens approved Meidensha’s ceramic flat-sheet membrane for use in its PACT® MBR system because of the membrane’s highly durable, abrasion resistant, and long service life characteristics, compared to conventional polymeric membranes typically used in membrane bioreactors.

With over a 40-year-long history, Siemens PACT® technology has been installed at more than 100 locations. Siemens’ adoption of our product for their new technology demonstrates confidence in and a high regard for Meidensha’s ceramic flat-sheet membrane.

The ceramic flat-sheet membrane is one of the central elements of business growth in the Meidensha V120 Medium-term Management Plan. While our products have been sold in Japan, Singapore, China and other Asian nations, the new PACT® MBR system is expected to also be used in North America along with other parts of the world—greatly contributing to the Meiden Group’s further expansion on the global stage.

Next year, Meidensha will celebrate the 120th anniversary of its founding. As a company that supports social infrastructure, we will continue striving to meet ever-diversifying needs in this area, helping ensure a brighter future for all.

Ceramic flat-sheet membrane

Exterior of the ceramic flat-sheet membrane

Conceptual, cross-sectional drawing showing how the membrane filters wastewater

  • ・The ceramic flat-sheet membrane has a myriad of fine holes (pores) that cannot be seen by the naked eye. When wastewater passes through the holes, impurities are filtered out, producing clean water. 
  • ・The 6-millimeter-thick ceramic flat-sheet membrane has a hollow structure; filtered clean water is gathered via water-collecting channels and transported out of the membrane.

PACT® MBR system

This next generation technology Siemens Water Solutions developed for treatment of refinery, petrochemical, and other challenging wastewaters can result in up to 50 % savings in footprint compared to conventional approaches to achieve reusable quality water that employ conventional biological treatment, ultrafiltration (UF), and carbon adsorption technologies. The effluent quality produced is virtually free of suspended matter, and low in organic and other contaminants, allowing end users the opportunity to implement sustainable water reuse programs.


Contact at Meiden on this press release:
General Affairs & Public Relations Division
Meidensha Corporation
Tel: +81-3-6420-8100