Traditional soy sauce production relies on high-temperature heating for sterilization, flavor enhancement, and impurity removal, which often leads to burnt flavor, excessive darkening, and high energy consumption. Shandong Qisheng Membrane Separation Technology Co., Ltd. has introduced inorganic ceramic membrane separation technology into the soy sauce purification process. Through crossflow filtration, efficient solid-liquid separation is achieved, significantly improving product clarity and production efficiency while preserving the original flavor of soy sauce.

Process Flow
Crude Soy Sauce → Bag Filtration (Pre-filtration) → Ceramic Membrane Ultrafiltration → Purified Soy Sauce → Next Process Step

• Bag pre-filtration: Removes particulate impurities larger than 25 μm, reducing the load on subsequent membrane systems.

• Ceramic membrane ultrafiltration: Performs molecular-level separation under pressure, retaining macromolecular impurities and suspended solids, yielding clear and bright filtrate.

• Fully enclosed operation: Automatic sludge discharge and recirculation concentration support batch and continuous production.

Technical Advantages

Superior Quality, Pure Flavor
Low-temperature filtration avoids burning and discoloration caused by high temperatures, fully preserving the original aroma and taste of the soy sauce.

Fouling Resistance, Stable Operation
Crossflow design creates turbulent flow for self-cleaning, effectively delaying membrane fouling, maintaining stable flux, and ensuring long service life.

Energy Saving, Lower Cost
Eliminates the need for repeated heating, significantly reducing energy consumption. Fully automatic control reduces manual intervention, with overall operating costs lower than traditional processes.

Clean Production, Compliant and Safe
The system is constructed of food-grade stainless steel, meeting QS certification. The fully enclosed process ensures no contamination, safeguarding soy sauce hygiene and safety.

Shandong Qisheng Membrane is a professional manufacturer of membrane separation equipment with years of production experience and strong technical capabilities. We specialize in solving filtration and concentration challenges in bio-fermentation, beverages, traditional Chinese medicine extraction, and animal/plant extract processing.

Our company adopts a circular production model, effectively helping customers improve production efficiency and achieve clean production goals. If you encounter any issues in membrane filtration applications, please feel free to contact Shandong Qisheng Membrane – our professional technical team will provide targeted solutions.