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Food and beverage manufacturers require gentle, low-cost clarification processes to preserve natural flavor, color and active ingredients while removing suspended solids, colloids and microorganisms. Spiral wound ultrafiltration (UF) membrane integrates large membrane area into compact pressure vessels, delivering continuous cross-flow filtration at moderate operating pressure. This paper describes the structural design, separation mechanism, core benefits, operational control and typical food industry applications of spiral wound UF systems. It also discusses fouling prevention and CIP procedures tailored for organic feed streams.
Traditional filtration equipment faces serious blocking risks and frequent maintenance when handling feed liquid with high solid loading, high viscosity or large particulate matters. Tubular membrane, characterized by large flow channels and robust mechanical strength, becomes an ideal solution for these tough separation tasks. This paper illustrates the structural features, working mechanism, key operating parameters, anti-fouling advantages and typical industrial applications of tubular membrane systems. It also compares tubular membranes with hollow fiber and spiral-wound membranes, and introduces proper cleaning strategies to maintain stable long-run flux.
Membrane separation technology offers a low-temperature, food-grade solution for gardenia yellow pigment refining. Combined with MF, UF and NF membranes, the process accomplishes clarification, impurity removal and concentration of crude gardenia extract in one integrated system. It effectively separates crocin from geniposide, pectin and macromolecular impurities, avoiding thermal damage to pigment active substances seen in traditional evaporation methods. The cross-flow tubular membrane equipment supports continuous production with convenient CIP cleaning, raising pigment recovery rate, improving color value and reducing energy and wastewater costs. It is an ideal technical upgrade for natural gardenia yellow manufacturers.
