Hi am Mohamed i would like to get details on nanofiltration in water supply systems seminar abstract reports ..My friend Ali said nanofiltration in water supply systems seminar abstract reports will be available here and now i am living at Multan, Pakistan and i last studied in the college/school BZU MULTAN and now am doing Study there. i need help on Nano filtration in water supply treatment
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Generally, there are four types of membrane processes. They are microfiltration, ultrafiltration, nanofibratory and reverse osmosis. Microfilter (MF) - Operating Pressure (PE) is less than 30. Types of removed substances are clay, bacteria, large viruses, suspended solids. Ultrofilar (UF) - Operating pressure (PE) is between 20 and 100. Types of removed substances are viruses, proteins, starch, coloids, silica, organic, dyes and fats. Nanofilter (NF) - Operating Pressure (PSI) is between 50 and 300. There are types of removed substances, sugar, insecticides, herbs, bilateral ions. Reverse osmosis (RO) - operating pressure (PSI) is between 225 and 1000. Types of depleted substances are Monovalent salts.
Applications of Micro and Ultrofiltration are treated by conventional water treatment (except for all processes except disinfection), RO and nanofiltration, removal of iron / manganese (after oxidation) and DBP preceding removal. Application of ro and nanofiltration ROO are applications that are mostly used for desalination, before nanofibreration developed to remove the hardness. Nanofiltration can be used to remove the DNPP predecessors
The RO membrane was developed in the 1970s with maximum operating pressure. This has increased significantly in energy costs. Thus, low pressure RO membranes were developed and became known as the NF membrane. In the second half of the 1980s, NF became. In the early 1990's, it became common and various applications were detected.
Due to the increase in the demand of good quality water due to the increasing population, we need nanofiltration, the lack of waste of water and reuse, better reliability of the filtration of the filters and the durability and the total cost of operation. Various polymers used for nanofiltration are polyethersulfone, polysulfone, polyphenylsulfone, polytetrafluoroethylene, polyvinylidene fluoride, polyacrylonitriles, nylon, polypropylene, cellulose acetate (ca), reborn cellulose, and composites, ceramic and cintered metals and carbon nanotubes. Two types of membrane spiral membranes - cheap, more sensitive to pollution. Tubular membrane - Most of the experiment, not easily polluted. But the surface area of the spiral membrane is more than the tubular membrane and therefore more capacity.
