cableties的部落格

The membrane filter as the original structure is characterized by the filter layer is very thin, so its filtering mechanism is mainly screening, adsorption effect is very small. Therefore, the membrane filter has the advantages of high filtration accuracy, stable particle size control, and easy recovery after back washing. However, if the water contains oil, it is easy to block and not easy to wash. Many researchers at home and abroad have been based on the hydrophilic properties of ceramic materials, but hope to use ceramic membrane to treat the produced water.

However, it is generally believed that membrane fouling is still difficult to solve. Membrane fouling is a very complex problem, but one thing is certain, that is, the existence of a large number of pollutants in the organic matter is certain, but the general attention to the film itself and less consideration of the bearing layer. According to the adsorption mechanism and the pore characteristics of the membrane and the supporting layer, it can be explained that the membrane filtration is not easy to block the water and is easy to plug the oily waste water.

 For the average suspended solids, larger than the membrane pore (sieve) particles are trapped in the surface of the film, film hole smaller than the particles through the membrane pores, as the membrane filter layer is very thin, but cannot produce the adsorption of these particles, although the supporting layer is relatively thick, but its pores relative to larger membrane pore. Not enough to produce adsorption. This screen only remove the role, so it is easy to wash clean.

As for the oil in the water, because the oil droplet instability is greater than the membrane pore oil droplets will not necessarily be screening, because may split into smaller than the membrane pore oil droplets through the membrane pores, although they can pass through the membrane itself, but in the supporting layer can coalesce into large droplets of oil by adsorption in micropores the bearing layer, but not desorption. Therefore, oily waste water will form a membrane filter clogging, and backwash difficult.

Therefore, the filter is suitable for the filtration of the water quality requirements of the low permeability formation, and is not suitable for the filtration of the oil produced water.

The philosophy of Starlab Scientific‘always high demand, cooperation make success’ is not only a statement but rather a commitment to the future constantly, we have to that our confidence is not just an attitute but a reflection of true certainty.Our main products including Membrane Filter Roll,Qualitative Filter Papers and SPE Column.