Home > Press > Scientists in Iran Use Nanotechnology for Industrial Purification of Drinking Water
Abstract:
Payamavaran Nanofanavari Fardanegar (PNF) Company for the first time implemented a project to purify drinking water from arsenic by using cavitation and active alumina nanotechnology in Ardabil Province in Iran at industrial scale.
Scientists in Iran Use Nanotechnology for Industrial Purification of Drinking Water
Tehran, Iran | Posted on February 13th, 2015The project was implemented in Ardabil Province with the capacity of 40 L/sec (3450 m3/day). In this project, heavy metals existing in drinking water are purified with a cost of two or three times lower than the cost of normal purification method.
There are numerous methods in the world for the purification of heavy metals from drinking water at industrial scale, among which mention can be made of reverse osmosis, ion exchanging resins and suspension method alumina sorbent. Some of the methods, including reverse osmosis are very sensitive to the water quality and costly despite their very good efficiency. Some others such as ion exchanging resins are inappropriate in many areas of Iran due to the presence of ions of other elements such as sulfate.
"The presence of arsenic at concentrations higher than 10 microgram per liter may have destructive effects on the consumer. This substance increases the risk of various types of cancers because it is adsorbed by the body through the skin. The use of nanocavitation technology oxidizes AS III into AS V. This material is highly adsorbed by alumina sorbents. The life of sorbents increases 2 or 3 times because no chemical oxidant is used in the product, and as a result, the operational cost decreases. Chemical oxidants decrease the performance of the sorbents," Eng. Ali Rakhsha, a member of the Board of Directors of the company stated.
The company has improved the performance of alumina based sorbents by using this technology. The method has been used at this volume for the first time.
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