water purifier nanofiltration principle is it? Most people do not know, in order to answer queries Xiao Bian also a lot of information.
nanofiltration water purifier is a relatively good water purifiers, water purification technology in a clear advantage, then what nanofiltration water purifier principle is it? The following nine positive home network to present to you something, we go and see.
sieving process using a nanofiltration membrane separation technology, a pressure differential driving force across the membrane, nanofiltration membrane to filter media, at a certain pressure, when the liquid flows through the membrane surface, the dense surface of the nanofiltration membrane of many small pores allow only water and small molecules passed into the permeate, while the volume of liquid substance is greater than the surface pore size of the membrane were trapped in the inlet side of the membrane, becomes concentrate, thereby achieving the purification of the liquid, separation and concentration purposes. Early NF membrane is referred to a loose reverse osmosis (LooseRO) film, is the early 1980s, following typical RO composite membranes developed. Such concept may be discussed in "nanofiltration" is: a molecular weight suitable for separation of 200g / mol or more, the molecular size of about 1nm membrane process to dissolve the components. A feature of nanofiltration membranes having ion selective: salts with monovalent anions permeate through the membrane can be a large number (but not non-blocking), though the film salt having a polyvalent anion (e.g., sulfates, and carbonates) the rejection rate is much higher. Thus, the permeability of the salt is mainly determined by the state monovalent anion.
through these presentations, I believe you know the knowledge of the principles of net water purifier nanofiltration of the bar. You also promise that you will ask: home water purifier it is necessary to install small advice you should not blindly, need to decide according to their own home water quality, water quality standard is actually based on what family does not need to drink small knowledge base?.
Editor: Zhang Fu
关键词： Industry new