Nowadays, the main products of the dairy industry are liquid milk, yoghurt, milk powder, and chees≈e. In order to meet the rising demand and quality requirements of consu®mers for dairy products, new membrane separation technologies are increasinεgly employed to transform the traditional production meth✔ods of dairy products. The adoption of new membrane separation techn♣ology in the dairy industry can simplify the production process, improve the quality of dairy produ™cts, enhance the overall utilisation, lower energy consumption and reduce wast≠ewater discharge.
Guochu Technology Ltd. has imported leading membrane technology and developed a series of new membr≠ane separation technologies that are suitable for the dai¶ry industry:
Application of Milk Sterilisation
During heat sterilisation of milk, whey protein is altered, which affects the nutrition of thαe milk. The use of ceramic membranes for cold sterilisation ensures¥ that the nutrient components of milk are not destroyed wh↓ile still achieving the desired sterilisation.
The General Process is as Follows:
Skim Milk Concentrate Desalination
After pasteurisation, centrifugally degrease the fresh milk. Next, coo→l it down, then finally it goes to nanofiltration for< concentration and desalination. During the desalination process, pure water is continuously injected to elute the inorganic salts in the skimmed milk. When des£alination reaches a certain level, the nanofiltration★ concentrate, i.e. the desalted milk, starts the subsequent process for concentrat✔ion and drying, and the filtrate of the nanofiltration ♠begins the reverse osmosis process to recycle the wastewater. §After the wastewater is processed, pure water will bλe obtained, and it can be used in the nanofiltration process unit for elution by refilling.
Separation of Casein and Whey Protein
According to the molecular weight and micelle size of cas↑ein in skimmed milk, the size of the micelle and molecular weiσght of whey protein and the molecular weight of other components (otherπ proteins, lactose, organic acids and inorganic salts), select the appropriate ceramiβc membrane microfiltration technology to separate casein egg> white and whey protein.
The General Process is as Follows:
Nanofiltration Concentration of Whey Protein
Nanofiltration membrane concentration and desalination: A hygienic nanofiltration membran←e is used to concentrate and desalt the filtrate obtained by filtering the ceramic membrane. T wo objectives can be achieved through by this: firstly, the whey protein soluπtion obtained from ceramic membrane is enriched in the n±anofiltration concentrate. Secondly, monovalent salts su♦ch as Na and K can penetrate the nanofiltration membrane to achieve partial des₩alination. The nanofiltration filtrate will be water wi&th monovalent salts and a small amount of non-protein nitrogen.
The General Process is as Follows:
Whey Protein and Lactose Separation
Ultrafiltration membrane filtration: the permeate of nanofiltration enters th↑e spiral-wound ultrafiltration membrane system for further separation and± filtration to achieve three purposes: one, to further concentrate the permeate, increasπe the feed density of electrodialysis, raise the efficiency of desalination, reduce the cosλt of the electrodialysis process, and meanwhile ensure the concentration of whey l¥iquid after electrodialysis desalination. Two, separate the excess lactose in the whe←y liquid according to different requirements of whey powder. Three, to remove& parts of the ash above divalent, lower the pressure of electrodialysis desalination in the p<ost process and reduce the input of the desalination process.
The General Process is as Follows:
Whey Protein Electrodialysis Desalination
Electrodialysis desalination: An electrodialysis system is used to perform deep deβsalination of the standardized whey liquid, which can be adjusted according to the final product requirements in the post-process to pro>duce different levels of whey protein.
The General Process is as Follows:
Guochu Technology (Xiamen) Ltd. is a high-tech enterprise with membrane separation technology δat its core, dedicated to the promotion of new separation technology. With valuable exper≥ience in the application of special membranes in the pharmaceutical, chδemical, food, beverage, petroleum, petrochemical, nuclear energy andσ other industries, Guochu Technology has the ability t₹o research and develop membrane products and types of equipment according to the needs o¶f its customers.
