Membrane filter

Membrane concentration is a kind of technology to reform the traditional process to achieve high-efficiency purification and concentration. It uses the difference between the molecular weight of active ingredients and liquid to achieve directional separation and concentration. Compared with traditional heating and concentration, it has the advantages of low energy consumption, normal temperature and little impact on products. It has been applied in the following areas:

1. purification and concentration of gelatin, protein and enzyme

Ultrafiltration has become an efficient process for the purification and concentration of gelatin, protein, enzyme and gelatin. The advantages of ultrafiltration concentration are no phase change, generally no heating, simplified process, wide pH range and prevention of deactivation. It is very suitable for the separation and concentration of heat sensitive substances. Usually, the pretreated crude products are ultrafiltered to make some low molecular substances and salts penetrate the membrane, so that enzymes and proteins can be concentrated and refined. The purification and concentration of different enzymes and proteins can be realized by selecting different membranes with different molecular weight, different membrane materials and processes.

2. purification and concentration of dyes

Nanofiltration has been widely used in the purification and concentration of materials with molecular weight of 200 ~ 2000, such as dyes, antibiotics, peptides and amino acids. The general process is to conduct constant volume desalting through percolation, and then dehydration and concentration. The degree of constant volume desalting and the multiple of dehydration and concentration are determined according to the final required purity and concentration of the product. Practice has proved that nanofiltration can replace precipitation, pH adjustment and (partial) evaporation to achieve the purpose of product purification and concentration, which is also a new high-efficiency and energy-saving process.

3. clarification and concentration of fruit juice, tea juice and pharmaceutical preparations

The concentration of fruit juice is conducive to transportation and storage, and low-grade tea is processed into instant tea, which not only solves the outlet of low-grade tea, but also improves the benefits. In fruit juice concentration, UF is usually used to clarify (pretreat) the fruit juice, and then reverse osmosis is used to concentrate it, which can generally be concentrated to more than 20 ° BX. In the concentration of tea juice, the pretreated tea juice is concentrated to 15-20% solid content through reverse osmosis, and then frozen for storage or spray drying. The application of membrane technology in this field is being explored, especially the clarification and concentration of Pharmaceutical (Chinese herbal medicine) preparations. MF (UF) +nf (RO) is the most commonly used process.

The company produces and customizes various membrane filter according to different customers' different output.