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Nano Sun Introduced Singapore First Used In Water Filtration Membrane Of 3D Printing Factory
Jul 07, 2018

Nano Sun is a by the nanyang technological university in Singapore (NTU Singapore) scientists create water technology start-ups, the company has launched a 3D printing factory, for the production of new type water treatment membrane. According to the company, the membrane can filter wastewater five times faster than conventional polymer and ceramic membranes.


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Darren Sun, founder and associate professor of Nano Sun and NTU, engineers lilin zhang and MD Ann Chai visually inspect the finished membrane components


Unlike the traditional membrane manufacturing process, which USES acids to make porous polymers as filters, Nano Sun 3D prints millions of nanofibers superimposed on each other, compressed into thin films.

In the introduction of 3 d printing factory, the Nano shows Sun printing industry standard for the traditional water filtration membrane PVDF (polyvinylidene fluoride) polymer, the polymer has been approved by the us food and drug administration (fda). Using a proprietary 3D printer, the Nano Sun can print millions of PVDF nanofibers per second - each five times thinner than a strand of hair - that accumulate on the backing material and compress into ultrathin film.

This allows the membrane to have a larger surface area to trap or repel contaminants, while allowing water molecules to pass through at a faster rate. By adjusting the thickness or thickness of these nonwoven fibers overlapping each other, the membranes can be made into microfiltration membranes and ultrafiltration membranes.

In the near future, the Nano Sun will be able to print 600 square meters of these membranes per day. Further research is under way to develop even better antifouling additives that can be combined with other materials during 3D printing.

The new membrane could build smaller sewage treatment plants and reduce land, infrastructure and labor costs. NTU says it only takes four days to produce enough of these membranes to supply water to a typical wastewater treatment plant. It is also more resistant to damage and biological contamination, requires less maintenance and is more cost-effective.