Feasibility Investigation of Aluminum and Sulfate Removal of Anodizing Wastewater by Nano-Filtration

Subject Areas : environmental management

Shahab Farajollahi ¹ ( کارشناس ارشد مهندسی عمران – محیط زیست، دانشگاه تهران*(مسئول مکاتبات). )
Ali Torabian Torabian ² ( Professor, Department of Environmental Engineering, University of Tehran )
Gholamreza Nabi-Bidhendi ³ ( Professor, Department of Environmental Engineering, University of Tehran )
Aliasghar Ghadimkhani ⁴ ( MSc. Of Civil and Environnemental Engineering, University of Tehran. )
Ali Mohammad pour ⁵ ( MSc. Of Civil and Environnemental Engineering, University of Tehran )
Nasim Zare ⁶ ( MSc. Of Civil and Environnemental Engineering, University of Tehran. )
Mahdi Jangorban ⁷ ( MSc. Of Civil and Environnemental Engineering, University of Tehran. )

Received: 2009-07-27 Accepted : 2009-12-16 Published : 2013-03-21

Keywords: Anodizing wastewater, Membrane separation, Nano-filtration, Concentration&#x0D, &#x0D, Polarization,

Abstract :

AbstractWastewater treatment of electroplating industries is essential due to high pollution andcontamination of soil and water. Due to high rate of water consumption of these industries, it isimportant to reuse and recycle the treated wastewater. In this research, removal of aluminum andsulfate from the wastewater was studied by using Nano-filtration pilot in aluminum anodizingindustry.Initially, aluminum of wastewater is reduced by neutralization of wastewater and then thepretreated wastewater is studied by nano-filtration. The effective parameters in process weretemperature and pressure which studied through pilot studies. NF-90 used as a Nano-filtration (NF)module which is prepared and manufactured by Filmtech Company. The temperature were 30, 35,40°C and the pressure intervals were 5 to 20 bar.The results demonstrated that the best aluminum and sulfate removal obtained at 7.5 to 12.5 barpressure and temperature of 30°C. The pressure and temperature increments induced to fluxincrement

References:

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