Iranian Researchers Use Minerals to Remove Pollutants from Factories’ Effluents
“The limited water resources in Iran and the need to protect surface and subsurface waters have made it necessary to pay attention to the recycling of industrial waters,” said Amin Salem, a faculty member of the Chemical Engineering Department of Sahand University of Technology in Tabriz.
Noting that colored organic pollutants, specially anionic pollutants, are present in the effluent from these factories and should be separated from the effluent to recycle the water, he said that the absorption substrate is capable of recycling the wastewater of these pollutants.
Production of absorption substrate by home-made materials with high efficiency of 90 percent while assessing the performance in real conditions, achieving the technology of forming a resistant substrate in acidic and corrosive environment, making a substrate with suitable compressive strength, high reliability factor on a semi-industrial scale and quick regeneration of the substrate for reuse are among the most important results of the research.
In a relevant development in Fabruary, a wastewater treatment device based on the synergy of plasma and cavitation technology was also designed and manufactured by a knowledge-based nanotechnology company in Iran which is able to treat all types of wastewater and recycle them for reuse.
The device developed by Pishro Fanavar Nano Tav Asia company is useful in destruction and neutralization of organic pollutants in industrial, mining, domestic, etc. wastewater, treatment of hospital effluents containing dangerous compounds and treatment of contaminated and toxic waters with heavy metals and microorganisms.
Among the advantages of this device mention can be made of the ability to destroy highly stable materials, the small amount of space needed for the treatment process, no use of chemicals, cost reduction compared to similar methods, removal of heavy metals and reduction of producing voluminous sludge.
In this device, the combination of plasma and cavitation technologies has been applied for the treatment process. Meantime, the pulsed plasma section provides an environment prone to the destruction of pollutants by creating an electrical discharge in the water.
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