DTRO, or disc tube reverse osmosis membrane technology, is a membrane product specifically designed to treat difficult wastewater. Compared with the roll membrane flow channel is wider. The surface of the membrane element deflector disk is a bump design, so that the material liquid in the flow process presents a state of turbulence, and enhance the membrane element anti-pollution ability. Independent filtration membrane element design, when the membrane is contaminated, according to the actual situation of the part of the DTRO membrane and the guide disk to replace, reduce the cost of system supplies.