Membrane separation technology is a separation technology widely used in solution separation, concentration and purification. It uses a membrane with selective permeation as a separation medium. The membrane wall is densely covered with micropores. The original solution passes through one side of the membrane under a certain pressure. The solvent and small molecular solutes penetrate the membrane wall as the filtrate, while the larger molecular solutes are retained by the membrane. , So as to achieve the purpose of material and concentration.

The main application areas are:

1. Concentration of tea powder, tea beverage and juice preparation.
2. Separation and concentration of animal and plant protein products.
3. Filtration and clarification of concentrated apple juice and other clear juice processing.
4. Mineral water purification system.

• The separation is carried out at room temperature, which is suitable for the concentration and purification of some heat-sensitive substances (juices, medicines, biological agents).
• The temperature of the circulation tank in the ultrafiltration is controlled at about 50-53°C, because the suitable temperature of the ultrafiltration membrane is 1-55°C. Another reason is that enzymatic hydrolysis is required for clarification, and the appropriate temperature for enzymatic hydrolysis is 50-53°C.
• With high filtration accuracy, it rarely loses effective nutrients and aromatic components in the juice when filtration and clarification. And the system technology is mature and reliable, with high degree of automation, simple operation and low labor intensity
• The system adopts imported PLC centralized automatic control. The start, run, and stop of the ultrafiltration pump are slowly controlled through the inverter on the touch screen, and the inlet and outlet pressures of the membrane elements, the inlet and outlet flow rates and the material liquid temperature are displayed at the same time. When the inlet and outlet pressures and inlet and outlet flow rates of the membrane module and the material liquid temperature exceed the set normal range, the system will prompt an alarm and the equipment will stop working. And various alarms will be displayed on the alarm interface of the touch screen so that the operator can take corresponding measures to ensure the stable and safe operation of the system.
• The operator can also directly operate the pump and valve through the touch screen, so as to realize the man-machine interface control and operation of the entire operation process. The operation interface of the touch screen includes reset interface (also called initial interface), manual interface, automatic interface, program selection interface, setting parameter interface and alarm interface. Operators can perform corresponding operations on different interfaces. The liquid level in the working container of each system is displayed on the touch screen at the same time, which is convenient for the operator to observe.
• The ultrafiltration system meets the requirements of the concentrated juice production line, and all pipe fittings are made of sanitary polished 304SUS material (material report provided). Ensure no secondary pollution, corrosion resistance and beautiful appearance.

Membrane separation, concentration and purification technology uses the selectivity and separation characteristics of membranes to achieve the purposes of concentration, clarification, classification, purification, and enrichment. Nanofiltration membrane concentration and separation technology. Under a certain pressure, when the raw liquid flows through the membrane surface, the densely packed many small micropores on the membrane surface only allow water and small molecules to pass through and become permeate, while the volume in the raw liquid is larger than the membrane. Substances with surface micropores are trapped on the liquid inlet side of the membrane and become concentrated liquid, thus achieving the purpose of separation and concentration of the original liquid.

The nanofiltration membrane is made of polyamide, combined with leading membrane making and fully automatic membrane technology, so that the product has long-term stable performance. Nanofiltration membrane technology is a functional semi-permeable membrane that allows solvent molecules or some low molecular weight solutes or low valence ions to pass through. The molecular weight of organic matter is about 100-1000, and the ability to intercept soluble salts is 20-90 %, the desalination of monovalent anion salt solution is lower than that of higher anion salt solution.

Membrane separation technology is a separation technology widely used in solution separation, concentration and purification. It uses a membrane with selective permeation as a separation medium. The membrane wall is densely covered with micropores. The original solution passes through one side of the membrane under a certain pressure. The solvent and small molecular solutes penetrate the membrane wall as the filtrate, while the larger molecular solutes are retained by the membrane. , So as to achieve the purpose of material and concentration. The membrane separation process is a dynamic filtration process. The macromolecular solutes are blocked by the membrane wall and flow out of the membrane module with the concentrated liquid. The membrane is not easy to be blocked and can be used continuously for a long time. The filtration process can be carried out at room temperature and low pressure, without phase change, high efficiency and energy saving.

The ultrafiltration system consists of a circulation tank, an ultrafiltration water tank, a clear juice tank, a circulation pump, a water pump, and a clear juice pump. Ultrafiltration membrane stack,  electric control box.