# Membrane CIP Cleaning and Flux Restoration Technology for Industrial Membrane Systems
Long-term operation of ultrafiltration, nanofiltration, reverse osmosis and tubular membrane systems inevitably leads to membrane surface fouling caused by organic colloids, protein deposition, pigment adsorption and inorganic scaling, resulting in decreased water flux, increased operating pressure and unstable separation efficiency. Regular manual disassembly and cleaning have low efficiency and risk of membrane damage. The online CIP cleaning technology adopts proportional chemical dosing and circulating cleaning to rapidly remove organic dirt and inorganic scale under closed conditions. It effectively restores membrane permeability and stable flux, extends membrane service life, and ensures continuous and stable operation of industrial membrane separation systems.
# Application of Tubular Membrane System for Industrial Material Clarification
Tubular membrane is an important branch of cross‑flow membrane separation equipment. Different from spiral‑wound and hollow‑fiber membrane elements, tubular membrane features wide flow channel and strong anti‑pollution capability. It is widely adopted for pretreatment clarification of high‑viscosity, high‑suspended‑solid industrial materials. This paper introduces working principle of tubular membrane system, compares it with traditional filtration methods, analyzes its advantages in handling turbid feed liquid containing plenty colloids and fine particles, and describes typical industrial application cases in food processing, bio‑fermentation and plant extraction fields.
Comprehensive Application of Membrane Separation Technology in Low-Temperature Refining And High-Yield Concentration
Traditional processing of plant extracts, traditional Chinese medicine liquids, biological fermentation broths and dairy materials relies heavily on thermal evaporation and chemical purification, which inevitably causes active ingredient loss, product color deterioration and high energy consumption. Membrane separation technology integrates microfiltration, ultrafiltration, nanofiltration and reverse osmosis to realize graded impurity removal, clarification, desalination and low-temperature concentration through physical screening. The whole process operates under mild conditions without high-temperature heating and chemical addition, effectively protecting heat-sensitive active substances and improving product purity and yield. As a comprehensive green manufacturing solution, multi-stage membrane combination technology has become the standard upgrading process for modern fine biological processing.
