Issue 25/2015 - Organic/Inorganic Hybrid Nanofiltration Membrane Technology Passed Acceptance

The sub-project of large-scale preparation technology of high-throughput nanofiltration membrane materials of the national "863" project undertaken by Hangzhou Water Treatment Center - preparation and application technology of organic/inorganic hybrid flat plate nanofiltration membrane has recently passed the acceptance
of the expert group organized by the high-tech center of the Ministry of Science and Technology.
After on-site testing, the expert group concluded that the diaphragm production capacity, membrane module production capacity, membrane module qualification rate and other indicators of the nanofiltration membrane production line have met the requirements of
the project task statement.

After the implementation of technical transformation, the diaphragm production capacity has reached 700,000 square meters, and the performance of nanofiltration membrane elements produced has reached the leading level
in China.
According to the relevant person in charge, the preparation and application technology project of organic/electrodeless hybrid flat plate nanofiltration membrane focuses on overcoming the key technologies
of organic/electrodeless hybrid flat plate nanofiltration membrane preparation technology, large-scale preparation of flat plate nanofiltration membrane, and large-scale (above 4040 specifications) components of flat plate nanofiltration membrane.
Combined with the application research and engineering demonstration of nanofiltration membranes, this project uses the hybrid modified interface polymerization polyamide functional layer of inorganic nanoparticles to solve the problems of small flux and easy contamination of traditional non-hybrid plate type interface polymeramides nanofiltration membranes, and at the same time improve the flux and retention rate
.

In addition, the research group also carried out the research of nanoparticle modification and nano-doped composite film; Completed the small test and pilot test of high-throughput nanofiltration membrane for micro-polluted water; The nanofiltration composite membrane production line was transformed, the production capacity was increased, and the thousand-ton nanofiltration membrane application demonstration project was implemented, and the stability of the long-term operation of
domestic membrane modules was investigated.
(Ping)