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High Quality Of Drinking Water

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DF30 (Ultra-Low-Pressure Selective Nanofiltration Membrane)

The DF30 (Ultra-Low-Pressure Selective Nanofiltration Membrane), as a low-pressure separate membrane of which molecular weight cutoff is 150~500 Dalton and that is selectively permeable to soluble inorganic salts, is featured with low operating pressure and high recovery rate. It can efficiently remove PPCPs, EDCs, micro organic pollutants, bacteria and virus and other microorganisms and retains the mineral substances. The product is one of the significant achievements in Major Science and Technology Program for Water Pollution Control and Treatment during “the 12th Five-Year Plan”, and it has been selected as the Major Environmental Protection Equipment Encouraged by the State and the First Major Technology and Equipment Demonstration Project in Zhongguancun National Independent Innovation Demonstration Zone. In addition, it has been awarded with multiple awards, such as the Beijing New Technology and New Products, the National Strategic Innovative Products and the National Key New Products, as well as the China Excellent Patent Award, the First Prize of Science and Technology Progress of Ministry of Education ,the Second Prize of National Scientific and Technological Progress Award ,etc.


Selective separation: Efficiently remove the micro organic pollutants in water, moderately desalt and retain minerals;

High recovery rate: The water recovery rate of the system reaches 90% and is above 15% higher than the traditional nanofiltration membrane;

Low opetation pressure: The system’s operation pressure is 0.2~0.4MPa and is above 30% lower than the traditional nanofiltration membrane;

Low operation cost: Long cleaning period, less drug consumption and less maintenance cost.


Note: *Design flux is determined based on the water temperature and water quality conditions.

Notes: (1) *The permeated flow has ±15% fluctuations according to the actual condition;
           (2) Test conditions: 2,000 ppm MgSO₄, 70 psi (0.48MPa), 25℃ , pH=7.5~8.0, recovery rate of 15%.