UF Membrane 100TPH Ultrafiltration Water RO Treatment System

UF Membrane 100TPH Ultrafiltration Water RO Treatment System

How does an Ultrafiltration Water Treatment System work?

Ultrafiltration is a pressurized membrane separation technology, that is, under a certain pressure, the small molecule solute and solvent through a certain aperture of the special film, and the large molecule solute can not pass through, stay at the side of the membrane, so that the large molecule material has been partially purified. Ultrafiltration principle is also a membrane separation process principle, ultrafiltration uses a pressure active membrane, under the action of external driving force (pressure) to intercept colloids in water, particles and relatively high molecular weight substances, and water and small solute particles through the membrane separation process. The particles with molecular weight of 3x10000 -- 1x10000 can be screened by micropores on the membrane surface. When the treated water passes through the membrane surface at a certain flow rate with the help of external pressure, water molecules and solutes with molecular weight less than 300-500 pass through the membrane, while particles and macromolecules larger than the membrane pores are trapped due to screening, so that the water is purified.

Technical specifications of Ultrafiltration Water Treatment System

About ultrafiltration membrane for Ultrafiltration Water Treatment System

The key to ultrafiltration is the membrane. Membranes come in various types and specifications. A number of anisotropic asymmetric ultrafiltration membranes have been produced in recent years. One type of anisotropic diffusion membrane consists of a very thin, porous "skin layer" with a certain pore size (approx. 0.1mm to 1.0mm thick) and a much thicker, more porous "sponge layer" as a support (approx.1mm). The skin layer determines the membrane selectivity, while the spongy layer increases the mechanical strength. Because the skin layer is very thin, it is efficient, permeable, has a large flow rate, and is not easy to be blocked by solute and lead to flow rate decrease. Commonly used membranes are usually made of acetic acid fibers or nitric acid fibers or a mixture of both. In order to meet the needs of sterilization in pharmaceutical and food industry, non-fibrous anisotropic membranes such as polysulfone, polysulfone amide and polyacrylonitrile have been developed recently. The membrane is stable at pH 1 ~ 14 and can work normally at 90℃. Ultrafiltration membranes are generally stable and can last for 1 to 2 years if used properly. No need for the time being, can be soaked in 1% formaldehyde solution or 0.2%NaN3. The basic performance indexes of ultrafiltration membrane are as follows: water flux [CM3 /(cm2? H)]; Rejection rate (expressed as percentage %); Chemical and physical stability (including mechanical strength).

Workflow of Ultrafiltration Water Treatment System

Raw water → raw water pump → quartz sand filter → softener → activated carbon filter → security filter → ultrafiltration device → ultraviolet sterilizer (ozone generator)→ pure water tank → water supply point

Applications of Ultrafiltration Water Treatment System

The ultrafiltration membrane has a minimum molecular weight of 500 Dalton, which can be used to separate proteins, enzymes, nucleic acids, polysaccharides, peptides, antibiotics, viruses and so on in biopharmaceuticals. The advantages of ultrafiltration are no phase transfer, no need to add any strong chemicals, can be operated at low temperature, fast filtration rate, easy to do aseptic treatment, etc. All of these can simplify the separation operation and avoid the loss of vitality and denaturation of bioactive substances.

Due to the above advantages, ultrafiltration technology is often used as:

(1) Desalination and concentration of macromolecular substances, and exchange equilibrium of solvent system of macromolecular substances.

(2) Fractional separation of macromolecules.

(3) pyrogenation of biochemical agents or other agents.

Ultrafiltration technology has become an indispensable and powerful tool in pharmaceutical industry, food industry, electronic industry and environmental protection.

Development history of Ultrafiltration Water Treatment System

The origin of ultrafiltration. In 1748, Schmidt used a cotton gum membrane or a celluloid membrane to separate the solution. When a certain pressure was applied, the solution (water) passed through the membrane, while proteins, colloids and other substances were trapped. In the 1960s, the concept of molecular weight was put forward, which was the beginning of modern ultrafiltration. In the 1970s and 1980s, the ultrafiltration developed rapidly, and began to mature after the 1990s. In our country, the research on this technology is relatively late, it is still in the research period in the 1970s, and only at the end of the 1980s, it enters the stage of industrial production and application.

FAQ:

1.  What is the operation mode of ultrafiltration membrane?

Operation mode: internal pressure type, external pressure type

2. What is the shell material of the ultrafiltration membrane?

Shell material: ABS, PVC, PMMA, stainless steel

3. Main manufacturers and products of ultrafiltration membrane: