Product Introduction
Ultrafiltration (UF) is a physical filtration system based on membrane separation technology, which removes suspended solids, colloids, bacteria, and large organic molecules in water through selective screening principles. It is widely used in water treatment, food processing, biopharmaceuticals, and other fields.
working principle:
Ultrafiltration is a membrane separation process that uses sieving as the separation principle and pressure as the driving force. The filtration accuracy is in the range of 0.005-0.01 μ m, and it can effectively remove particles, colloids, bacteria, heat sources, and high molecular weight organic substances from water. It can be widely used for the separation, concentration, and purification of substances. The ultrafiltration process has no phase transformation and operates at room temperature, making it particularly suitable for the separation of thermosensitive substances. It has good temperature resistance, acid and alkali resistance, and oxidation resistance, and can be used continuously for a long time below 60 ℃ and pH 2-11.
Core technology and design advantages
Membrane Materials and Structures
Material: Made of anti pollution materials such as polyvinylidene fluoride (PVDF) and polyether sulfone (PES), with a membrane pore size range of 0.01-0.1 microns and a cut-off molecular weight of 1kDa-500kDa.
Modular design: Hollow fiber membrane/flat membrane modules, with a single membrane area of 10-80 square meters, supporting parallel/series combinations to meet different processing scale requirements.
intelligence control system
Integrated PLC automatic backwash system, real-time monitoring of transmembrane pressure difference (TMP) through pressure and flow sensors, adjustable backwash cycle (30-120 minutes), reducing membrane fouling risk.
Energy consumption optimization: Low pressure operation (0.1-0.5MPa) saves more than 50% energy compared to traditional reverse osmosis (RO).
Selection and operation suggestions
Key factors for selection
Water quality analysis: Detect SS (suspended solids), COD, SDI (pollution index) of raw water, and select the matching membrane flux (LMH).
Operation mode: Continuous (large water plant) vs Intermittent (small equipment), prioritize models with online cleaning (CIP) function.
Maintenance cost optimization
Annual average membrane replacement rate: 3-5 years (depending on water quality and cleaning frequency);
Chemical cleaning agents: sodium hypochlorite (oxidation cleaning) and citric acid (descaling) are used alternately to reduce the risk of membrane damage
Typical application scenarios
Municipal and drinking water treatment
Replace traditional sand filtration process for surface water purification (such as rivers and lakes), remove microorganisms such as algae and cryptosporidium, and ensure that the effluent meets the "Sanitary Standards for Drinking Water" (GB5749-2026).
Industrial wastewater reuse
Heavy metal interception in electroplating wastewater, decolorization of printing and dyeing wastewater, and separation of emulsified oil to achieve zero discharge of wastewater.
Case: In the painting workshop of a certain automobile factory, the ultrafiltration system increased the water reuse rate from 60% to 92%, saving 120000 tons of water annually.
Food and Biopharmaceuticals
Concentrated whey protein, clarified juice, and purified vaccine comply with FDA/GMP sterile production standards.
Related product recommendations:
Boiler water reverse osmosis water treatment equipment
Domestic replacement of imported 3M large flow filter element HFU640UY1000JU
Equivalent Dow Chemical SFD-2860XP Ultrafiltration Modules
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