Daltonen Focusing on Separating Membrane Products and Fluid Technology Services.
System shutdown and precautions
2023/09/08
When the membrane system is shut down, it is necessary to flush the entire membrane system with pre treated qualified water supply or produced water, in order to replace the high salinity concentrated water from the pressure vessel and membrane components, until the conductivity of the concentrated water outlet is close to the conductivity of the inlet water, and proceed at a low pressure of about 3.0 bar (43.5 psi). High flow rate is beneficial for improving the flushing effect, but the pressure difference between the components or pressure vessels at both ends should not exceed the maximum specified value. The low-pressure flushing inlet should not contain chemicals used for pre-treatment, nor should it contain scale inhibitors. After the flushing is completed, completely close the inlet valve. The reverse osmosis nanofiltration system should be completely filled with water. It is recommended to set the concentrated water discharge pipeline to an inverted U-shaped shape, with the top of the inverted U-shaped pipeline higher than the highest straight pressure vessel and a siphon breaking device installed.
Factors affecting the performance of reverse osmosis and nanofiltration membranes
2023/09/08
1. Recovery rate The percentage of water supply in a membrane system that is converted into permeate or permeate. The design of the membrane system is based on the preset inlet water quality, and the concentrated water valve set on the concentrated water pipeline can adjust and set a reasonable recovery rate. Enhanced pre-treatment configurations can greatly improve recovery rates. 2. Desalination rate The percentage of total soluble substance concentration removed from the system inlet through reverse osmosis membrane, or the percentage of specific components such as divalent ions or organic matter removed through nanofiltration membrane.
Empfohlene Neuigkeiten
2024/05/31
the application of membrane separation technology in dairy standardization and cheese preparation raw materials not only improves product quality and taste, but also reduces production costs and energy consumption. With the continuous development of the dairy processing industry, membrane separation technology will play an increasingly important role in this field.
Challenges of wastewater treatment in the dairy industry
2024/05/31
Reduced energy consumption and cost: Membrane separation technology has lower energy consumption and cost compared to traditional wastewater treatment methods. Since no heating or chemical addition is required during operation, energy consumption and chemical usage are reduced. At the same time, the membrane separation technology is easy to operate, easy to automate control, and reduce labor costs.
Application of membrane separation technology to fine protein recovery from whey
2024/05/30
In the process of protein recovery in whey, membrane separation technology can not only recover valuable protein resources, but also reduce production costs and environmental pollution. With the development of dairy processing industry, the recovery of protein from whey will become an important research direction. Membrane separation technology, as an advanced separation technology, will play an important role in this field.
Further application of membrane separation technology in the production of concentrated milk
2024/05/30
Membrane separation technology plays a crucial role in the production of concentrated milk. First of all, by selecting the appropriate membrane materials and operating conditions, the efficient removal of water in the milk can be achieved, while retaining other beneficial components, s
2024/05/29
On the one hand, the development of new membrane materials and membrane components will further improve the performance and efficiency of membrane separation technology; On the other hand, fusion applications with other technologies,
