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Juice -
In the production of fruit juice, the retention of flavor and nutrition is the bottleneck restricting the development of the industry. Membrane filtration process is carried out at room temperature with mild filtration, which helps to retain the original taste of raw materials and remove bacteria, spores, colloid and peculiar smell and bitterness, etc. It is a promising sterilizing and clarifying technology for juice drinks. Because the raw materials contain products that block the filter material, Dahli hangzhou has rich experience in selecting appropriate filter products.


Fruit juice is a fermentable but unfermented juice or serous product made from fruits or vegetables using physical methods (mechanical methods, water extraction, etc.). Or in concentrated fruit juice (pulp) added to the same amount of water removed during processing to restore the juice, slurry products. The membrane filtration process is carried out at room temperature, does not involve heating process, and does not change the flavor and nutritional ingredients of the product, especially the heat-sensitive ingredients, making it an excellent choice for fruit juice and its drinks.

Main filtration process points in the production of fruit juice and its beverages:
Water filtration: specific applications: water for products, CIP water, equipment cleaning water, aseptic filling water, etc. Filtering requirements vary from application to application.
Coarse filter for the removal of large mechanical particles such as sand, PP melt jet/fold filter core, 40-70 m absolute accuracy;
Activated carbon particle capture filtration, PP melt jet/fold filter core, 20 m absolute accuracy;
Ion-exchange resin capture filter, PP melt jet/fold filter core, 5 m absolute accuracy;
For filtration before entering the clear water tank, PP melt jet/fold filter core, GF fold filter core, 2 m absolute accuracy;
Water sterilizing/reducing filtration, PES/N66/ hydrophilic PVDF membrane filter core, 0.22/0.45 m, can be verified by bacterial challenge test for integrity test.
Gas filtration (air, nitrogen, carbon dioxide) :
Prefiltration of gases: Protects the rear sterilizing filter. PP folding filter element is recommended, with 10 m absolute accuracy, up to 1 m for gas filtration.
Tank ventilation and ventilation; Sterile gas transfer materials, etc
The hydrophobic PTFE membrane filter element is recommended, with a precision of 0.22 m and a gas filtration accuracy of up to 0.01 m. The integrity test can be carried out after being verified by bacterial challenge test.
Respiratory port filtration of sterile storage tank:
The hydrophobic PTFE membrane filter element is recommended, with a precision of 0.22 m and a gas filtration accuracy of up to 0.01 m. The integrity test can be carried out after being verified by bacterial challenge test.
Aeration filtration in liquid:
Filter purpose: To remove particles and high diffusion, high uniformity of inflation, recommended stainless steel powder sintered filter core, 10 m absolute accuracy, filtering gas up to 1 m.
Steam filtration:
Specific applications: steam for heat exchange equipment, steam for high temperature sterilization, steam in direct contact with food, etc.
Recommended stainless steel powder sintered filter element or stainless steel mesh filter element, 10 m absolute accuracy, filtering steam up to 1 m.
Clarification and sterilizing of juice:
Traditional technology: coarse filter/various diatomite filters; Fine filtration and degerming filtration: deep cardboard filter, or deep cardboard filter stack.
The current new process recommends the tangential flow ultrafiltration step to achieve the purpose of coarse filtration, fine filtration and sterilization. The product has hollow fiber organic ultrafiltration membrane or inorganic ceramic membrane.
Organic membrane ultrafiltration membrane, can not be used after the use of strong acid, alkali or strong oxidant as a cleaning agent to restore its flux.
Ceramic membrane to strong acid, strong alkali or strong oxidant has extremely strong stability, can use chemical cleaning agent, organic solvent or high heat steam to remove pollutants in the membrane, filter membrane long service life, low operating cost.

Note: For detailed technical solutions, please contact your sales engineer.