UF Membrane Systems 2880
12,000T/H UF Systems+RO Systems
Project Adress : Xi'an / China
Project Time : 02/2022
UF Systems + RO Systems Schematic iagram
Ultrafiltration systems and reverse osmosis systems in water treatment are both advanced membrane separation technologies. They play different roles in the water purification process to meet different levels of water quality needs. The following is a detailed description of their respective roles:
Ultrafiltration system (UF) Systems
Ultrafiltration is a membrane separation process driven by pressure difference, and its core component is the ultrafiltration membrane. The pore size of ultrafiltration membranes is generally between 0.001 and 0.1 microns, which can effectively intercept pollutants such as suspended particles, bacteria, some viruses, macromolecular organic matter, and colloids in the water, while allowing water molecules and relatively small solutes (such as small Molecular organic matter, inorganic salt ions) pass through.
The main functions of the ultrafiltration system include:
- Clarification and sterilization
Effectively remove suspended solids and microorganisms (such as bacteria and some viruses) in water, and improve water clarity and biological stability.
- Retention of minerals
Since the ultrafiltration membrane has a low rejection rate of inorganic salt ions, a certain proportion of minerals is still retained in the treated water, which is suitable for drinking water that has certain requirements for hardness and mineralization or wants to maintain a certain taste. (such as mineral water).
- Pretreatment
used as a pretreatment method before reverse osmosis systems or other higher-precision membrane separation systems to remove particles and microorganisms that may block subsequent precision membrane pores and protect the normal operation of downstream equipment.
- Concentration and separation
In industrial applications, ultrafiltration can be used to concentrate and separate specific macromolecular substances, such as proteins, enzymes, nucleic acids, etc.
Reverse Osmosis System (RO) Systems
Reverse osmosis is a separation technology based on the principle of selective permeation of a semipermeable membrane. Its membrane pore size is smaller, usually around 0.0001 microns. Driven by pressure, the reverse osmosis membrane only allows water molecules and a very small amount of small molecular substances (such as certain monovalent ions) to pass through, while the vast majority of ions, organic matter, microorganisms, particulate matter, etc. are efficiently intercepted.
The main functions of the reverse osmosis system include:
- Deep desalination
The reverse osmosis system has a very high desalination rate and can effectively remove most inorganic salts (including heavy metals), dissolved organic matter and almost all microorganisms in the water. It is suitable for preparing pure water, high-purity water or ultra-pure water, such as Electronic industry, pharmaceutical industry, laboratory water, power plant boiler feed water and other occasions.
- Soften water quality
By removing hardness components such as calcium and magnesium ions, it can significantly reduce the hardness of water and prevent the formation of scale in pipes, heat exchangers and other equipment.
- Drinking water purification
used for domestic and commercial drinking water purification, providing low TDS (total dissolved solids) pure water and removing pollutants that are harmful to human health.
- Seawater desalination
Reverse osmosis technology is one of the main means of seawater desalination, which can convert seawater with extremely high salt content into fresh water for drinking or industrial use.
In summary, ultrafiltration systems are mainly used to remove larger particles, microorganisms and some organic matter, retaining certain minerals, and are often used as pretreatment or to produce drinking water containing minerals; while reverse osmosis systems provide higher levels of Water purification, achieving deep desalination, softening water quality and removing almost all impurities, is suitable for industry, scientific research and drinking water fields that have strict requirements on water quality. The two can be combined according to actual application needs to form an ultrafiltration-reverse osmosis composite system to optimize the efficiency and effect of the entire water treatment process.