Disc separator and horizontal decanter centrifuge are both high-speed centrifugal machines. They are used for the separation of liquid-solid, liquid-liquid, liquid-solid-liquid materials by the inertial centrifugal force and the specific gravity difference of the materials. They are widely used in many economic fields because of high separation precision, large processing capacity, continuous and automatic processing, convenient operation and maintenance. Especially in recent years, they are more and more used in bioengineering.

1. Applicability of disc separator and horizontal decanter centrifuge

The applicability of disc separator and horizontal decanter centrifuge is different. In terms of solid-liquid two-phase separation, generally speaking, the solid particle size in the material separated by the disc separator is 0.1-300μm, and the solid content in the material is 0.02-40%. The solid particle size in the material separated by the horizontal decanter centrifuge is 2μm-3mm, and the solid content in the material is 0.5-60%. The liquid phase separated by the disc separator is clear and transparent, while the liquid phase separated by the horizontal decanter centrifuge still contains a small amount of solid.

2. Application in bioengineering

Due to the complexity of biological environment and the diversity of biotechnology, the centrifugal separation is basically carried out in a rather complex liquid environment. It should be noted that the diversity and complexity of biotechnology greatly increase the difficulty of selection of separation and purification equipment.

In the case of microorganisms, due to their various types, sizes and shapes, the flow characteristics of culture solution are very complex. Therefore, sometimes a type of disc separator is enough for separation, sometimes two or three combination of disc separators or the combination of disc separators and horizontal decanter centrifuges are needed. The combination sequence is also different, which depends on the specific material properties and comprehensive consideration of investment cost and production cost. In addition, in many cases, the disc separator and horizontal decanter centrifuge are used in the pretreatment process of ultrafiltration and nanofiltration. They are used in combination with ultrafiltration and nanofiltration equipment.

3. Conclusion

Centrifugal separation technology is a kind of separation technology with strong adaptability, which can meet the requirements of high precision and purity of materials in bioengineering, and has a broad development prospect. The development, improvement and application of centrifugal machines can improve the product quality of related industries, upgrade the product grade, reduce the investment cost and production cost, and improve the market competitiveness. It is believed that the disc separator and horizontal decanter centrifuge combined with bioengineering technology will play a greater role in bioengineering and be widely used.