Membrane separation technology - water purification technology - Industry News - Global network of w

Membrane separation technology membrane separation technique refers to a mixture on a molecular level in the different size molecules through a semipermeable membrane to achieve selective separation technique, also known as semi-permeable membrane, or membrane separation, membrane wall covered with small holes, The pore size can be divided into: microfiltration (MF), ultrafiltration (the UF), nanofiltration (of NF), reverse osmosis (RO) membrane and the like, are isolated using cross-flow membrane filtration. Membrane separation processes: the film is a core member of each membrane process, it can be seen as having a phase between two selective permeable barrier, or regarded as the interface between the two phases, the membrane separation process may be schematically, phase 1 is the raw material or the upstream side, phase 2 of the permeate or downstream side. A component of the feed mixture can be transmitted faster than the other components through the membrane to the downstream side, thereby achieving the separation. Because membrane separation technology operating at room temperature, no phase change, energy efficient, does not produce pollution and so on in the production process, and therefore the purification of drinking water, industrial water treatment, food, drink water purification, filtering, recovering the biologically active substance , refining and other aspects are widely used, and quickly extended to all areas of textile, chemical, power, food, metallurgy, petroleum, machinery, biological, pharmaceutical, fermentation. Separation membrane because of its unique structure and performance, in terms of environmental protection and regeneration of water resources have sprung up everywhere, has a wide range of applications in environmental engineering, especially in wastewater treatment and water reuse.