What are the wide applications of diaphragm filter presses in the food industry?

　The development of diaphragm filter presses has progressed from traditional filtration, to diaphragm filtration, and such an improvement process has increased the utilization of the process in the industry. The trajectory of the development of diaphragm filter presses is mainly to improve the solid content of the filter cake and the water washing effect inside the equipment.

　In the press chamber, the press medium (high-pressure air or high-pressure water) is passed, so that the diaphragm is squeezed in the direction of the filtration chamber, so as to achieve the purpose of filtration and dewatering. Here are the advantages of diaphragm filter press:

1. Shorten the filtering time of each batch of material, improve the utilization rate of the equipment, and also increase the output.

2. The diaphragm filter press has low-pressure feeding and high-pressure pressing, so the solid content of the filter cake is greatly improved.

3. Pre-pressing technology is used in the process of diaphragm filter press, which makes the formation of filter cake uniform, and is conducive to water washing, and the water consumption is greatly reduced.

At present, the application of diaphragm filter press technology in food is mainly divided into three categories:

1. After the fermentation of food production, the concentrated dregs are dewatered, including citric acid, beer, lactic acid, sucrose, glucose and so on.

2. Filtration of edible oils used in foodstuffs.

3. Dehydration of edible gums, especially agar and carrageenan.