Design of Continuous Hybrid Wastewater Treatment System
عنوان دوره: 1
نویسندگان
1Caspian Faculty of Engineering, College of Engineering, University of Tehran
2Caspian Faculty of Engineering, College of Engineering, University of Tehran, Tehran, Iran
3University of Tehran
4Fouman Faculty of Engineering, College of Engineering, University of Tehran, Tehran, Iran
چکیده
In this study, a combination of different separation processes including adsorption, photocatalytic degradation and membrane filtration was used for wastewater treatment. For this purpose, activated carbon, Cu2O/TiO2 nanosheet containing 0.6 wt.% reduced graphene (Cu2O/TiO2/Gr) and PAN-based polymeric membrane were used as adsorbent, photocatalytic nanoparticles and Nanofiltration respectively. Nanofiltration membranes were fabricated by wet phase inversion method. Pore diameter of the membrane by liquid-liquid displacement porosimetry (LLDP), LLDP results showed that the average pore size of the pure PAN and PAN/PVP hybrid membranes are and , which confirms that the fabricated membranes are in the nanofiltration range. Separation properties of the hybrid processes were characterized by using Iranian Wood and Paper Plant (Chuka) wastewater as feed solution. For this purpose, Chuka wastewater was analyzed by spectroscopy, gravimetric and device analysis technique and their pollutants were detected. Then wastewater was purified by using continuous hybrid processes containing adsorption, photocatalytic degradation and nanofiltration under 3 states. It was found that state 1 of hybrid processes (i.e. adsorption, photocatalytic degradation and Membrane filtration) has the best separation performance for Chuka wastewater treatments.
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