BiFei Separation Membrane (Dalian) Co., Ltd. is a high-tech enterprise established in 2015, recognized as a national-level specialized and new small giant enterprise in China. The Nanomaterials Industrial Park covers an area of 70,000 square meters, with an annual production capacity of 16 million square meters and an output value of 3.5 billion. The company possesses over 100 patents for nanomaterials and applications, holding core competitiveness in membrane materials, membrane products, and process design packages. BiFei's nanoscale separation membranes have been widely applied in the fields of energy, chemical, metallurgy, pharmaceutical, and semiconductor industries in China for raw water purification, wastewater reuse, seawater desalination, and zero discharge of wastewater, receiving unanimous praise from users. Currently, BiFei membranes have established extensive connections in regions including the Middle East, Central Asia, Europe, East Asia, Southeast Asia, and South America.

BiFei Membrane insists on prioritizing quality and leveraging technological expertise, applying technologies such as SNIPS (Patent CN107376649A), HDBSF high-dimensional technology (Patent CN109277001A), SCC concentric coating technology (Patent CN109277002A), CO-EPS/CU-EPS uniform fiber distribution technology, HDPC high-density technology , and COOA open packaging technology , among others. The BFPM membrane material, BFMIN membrane core, and BFTB process design package are praised globally for their long lifespan and high cost performance.

Water is the source of life for all things in the world and the most abundant substance within the human body. Access to fresh water for life, providing carbon neutral sustainable energy, maintaining healthy living in biopharmaceuticals, and leading the future electronic chip industry, separation membranes play a significant role in every corner of modern life. However, energy scarcity, resource depletion, environmental pollution, and the lack of water resources are among the challenges faced by humanity. The pursuit of the BiFei Separation Membrane (Dalian) Co., Ltd. (referred to as BiFei Membrane) team is to make the world greener and life healthier.

BiFei Membrane has introduced advanced technology, digested, absorbed, and innovatively developed oxidation-resistant hollow fiber ultrafiltration membranes and nanofiltration membrane fully automated production lines. The BiFei Membrane production line employs a closed automatic feeding and no blind spot uniform stirring casting solution ripening system throughout the entire process, ensuring the purity and stability of the solution. Adopt the industry's most advanced continuous degassing technology to enable prolonged continuous production, with the spinneret capable of automatic real-time adjustment during operation, ensuring uniform thickness of the hollow fiber membrane base layer. Through a continuous reaction process, ultrafiltration membrane fibers with a pore size of 20 nanometers and high concentration, as well as charged nanofiltration membrane fibers with a pore size of 1 nanometer are formed. After constant temperature and humidity drying and storage treatment, the membrane fibers are uniformly packaged as membrane core of cylinder ultrafiltration membrane modules or as flat-plat ultrafiltration membrane modules.

The assembly line installs the column-type membrane cores into the membrane shells and completes the tightening of all components. The testing line conducts multi-parameter index testing on each finished membrane module, such as initial flux, stable flux, and pressure resistance indicators. The BiFei R&D Center owns multiple proprietary intellectual properties and advanced R&D platforms, including flux testing systems and pore size distribution testing systems. The research results have elevated the Hagen-Poiseuille formula and Darcy's law to new heights in separation theory, forming the BiFei Separation Equation:

Qw = ΔP * S * ε * f(ax)^2 * (1 + E/E0) * (Rm + Rf) / (μ * L)

In the development of new materials, membrane performance improvement, and process package integration, significant technological breakthroughs have been achieved. The R&D Center collects data on raw materials, production parameters, and product applications for data modeling, establishing a powerful AIoT intelligent system.

Currently, BiFei Membrane ultrafiltration and nanofiltration membrane products have been widely applied in the following industries:

Power industry: 1000MW level thermal power plants and nuclear power plants;

Petrochemical industry: 10 million ton level petrochemical plants;

Municipal industry: 100,000 ton level municipal water plants;

Metallurgical industry: 5 million ton level steel plants;

Pharmaceutical industry: 1 million ton level biopharmaceutical plants;

These cases have been widely distributed across most regions of Northeast, North, Northwest, Southwest, East, and Central South China and have received unanimous praise.

BiFei Separation Membrane (Dalian) Co., Ltd. has been awarded as a national high-tech enterprise, a national-level specialized, refined, characteristic and innovative "little giant" enterprises, a first batch of national-level environmental protection equipment manufacturing enterprises, a science and technology-based small and medium-sized enterprise, a council member unit of the China Membrane Industry Association, a council member unit of the China Small and Medium-sized Enterprises Association, a provincial "Gazelle Enterprise", a top 100 high-growth enterprise in Dalian, an academician expert workstation, and has obtained IMS, etc.

BiFei Membrane is committed to innovating in the field of nanotechnology, promoting the development of new materials, and contributing to the health of humanity.