Special Material Separation
Specialty separation membranes are high-performance membrane materials with specific separation functions. They achieve the separation, purification, or concentration of target substances through physical or chemical processes. Compared to conventional water treatment membranes that remove common impurities and pollutants, specialty separation membranes are more targeted and applied to complex and challenging separation scenarios. Rich Membrane Technology offers a full range of specialty separation membranes, including microfiltration, ultrafiltration, nanofiltration, thermal sterilization, acid-resistant, alkali-resistant, and organic solvent-resistant membranes. We provide a series of product services from pilot-scale to industrial production, with wide applications in industries such as enzyme and antibiotic concentration, protein concentration, and solvent recovery.
Typical Water Quality
Specialty material separation membranes are suitable for the following water quality scenarios:
1. High-precision separation scenarios: SO₂ rejection rate >99% (conventional nanofiltration membranes only 95%-98%), C rejection rate increased to 70%-85%, molecular weight rejection range as low as 100-150 Da, capable of intercepting antibiotics and microplastics.
2. Strong anti-fouling scenarios: Utilizing pH-responsive design (e.g., alkaline with positive charge) or hydrophilic modified materials (e.g., PVDF) reduces pollutant adsorption and achieves high flux recovery.
3. Wide chemical tolerance scenarios: Tolerates pH range 1-12 (DTRO membranes reach pH 1-13), withstands strong acid and alkali cleaning and high temperatures (50℃), some membranes can withstand high pressure (160 bar).
4. High-efficiency concentration scenarios: High COD, high-salinity wastewater (IDS < 180,000 mg/L), desalination rate > 90%; meets salt separation requirements, separating divalent and monovalent ions.
5. Special application adaptation: Suitable for pharmaceutical purification (GMP standards), dye desalination, zero discharge of high-salinity wastewater, etc.
Typical process flow
This special material separation membrane process starts with the material, first pre-treating to remove impurities, then performing preliminary separation through a special ultrafiltration membrane, followed by further separation and purification through a special reverse osmosis membrane or nanofiltration membrane.
The final product is obtained, while by-products are generated during the process. (Note: This process is a general-purpose process. Further analysis is required for different types of specialty materials. Please contact our technical staff if needed.)
Typical Membrane Elements
Specialty Separation Microfiltration/Ultrafiltration/Nanofiltration/Reverse Osmosis Membrane Modules
Specialty Separation Acid/Alkali Resistant Membranes
Specialty Separation Organic Solvent Resistant Membranes See product center for membrane element models
See case studies for application examples
