Nanotechnology is defined as a science, engineering and technology that is conducted at nanoscale. There is a process called nanofiltration that is advanced membrane separation technique for water and waste water treatment. You can also say that it is pressure driven process in which the pore size of the membrane and trans-membrane pressure remains in between reverse osmosis and ultra-filtration. As compared to reverse osmosis, it is quite an expensive process due to low operating pressure and high flow rates.
This is operated at medium pressure in the range of 10-50 bar. You can also use this method to separate ions and low and high molecular weight components.
There is another process called nanocatalysts. It has an advantage of high reaction rates due to high specific surface areas and low mass transfer restrictions. As per researchers, this process is well tested in labs and is a successful one. By this method, the experts were able to generate active palladium catalysts on the basis of ferromagnetic carrier colloids.
Nanofiber is another well tested process which is a combination with biological removal of toxic xenobiotics. This is an advanced method for waste water treatment. By using nanofibre structures, it supports microbial biofilm formation. The carriers of this are examined on various parameters.
Nanobiocides can be successfully incorporated into nanofilters to purify waste water. This is now used in medical areas embedded with nanobiocides. You may not know that nanobiocides are categarised into three categories named as metal and metal oxides, engineered nanomaterials and natural antibacterial substances. Well, chitosan is also applied in high flux ultrafiltration media.
These are just a few names of some of the process of nanofiltration process of waste water. But if you want to get an idea about more, you can talk to the experts and get the devices installed at your place in no time by asking to them.