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DTRO Membrane Technology
- Aug 29, 2018 -

DTRO membrane technology


DT membrane technology is a disc-type membrane technology, which is divided into two categories: DTRO (disc type reverse osmosis) and DTNF (disc type nanofiltration). It is a patented membrane separation equipment. Its membrane module construction is completely different from the traditional coil membrane. The raw liquid channel: the disc membrane module has a patented flow channel design, using an open flow channel, the feed liquid enters the pressure vessel through the inlet, and the flow guide disk The passage between the shell and the outer shell flows to the other end of the assembly. At the other end flange, the liquid enters the deflector through 8 channels, and the treated liquid flows through the filter membrane at the shortest distance, and then reverses 180o. The other membrane surface flows from the notch at the center of the deflector to the next guide disc, thereby forming a double "S" shape on the surface of the membrane from the circumference of the guide disc to the center of the circle, to the circumference, and then to the center of the circle. Route, the concentrate finally flows out of the feed end flange. The distance between the two deflectors of the DT assembly is 4 mm, and the surface of the deflector has a certain arrangement of bumps. This special hydraulic design makes the treatment fluid flow under the pressure of the filter surface to form turbulence when bumps collide, increasing the transmission rate and self-cleaning function, thus effectively avoiding membrane clogging and concentration polarization, successfully It prolongs the service life of the diaphragm; it is easy to clean the scale on the diaphragm during cleaning, ensuring that the disc tube membrane group is suitable for treating high turbidity and high sand content wastewater, and adapting to more severe water inlet conditions.


Permeate flow channel: The filter membrane consists of two concentric annular reverse osmosis membranes with a layer of filiform scaffold in between, allowing the purified water passing through the membrane to flow quickly to the outlet. The outer ring of the three layers of annular material is welded by ultrasonic technology, and the inner ring is opened to be a clean water outlet. The permeate flows along the filament support in the middle of the diaphragm to the permeate passage at the periphery of the center rod. The O-ring on the guide disc prevents the raw water from entering the permeate passage; the distance from the diaphragm to the center is very short. And the filter membranes in the assembly are equal