توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Feasibility of Utilizing Moving Bed Biofilm Reactor to Upgrade and Retrofit Municipal Wastewater Treatment Plants
نویسنده(ها): ، ، ،
اطلاعات انتشار: International Journal Of Environmental Research، هفتم،شماره۴، Autumn ۲۰۱۳، سال
تعداد صفحات: ۱۰
In this study, feasibility of upgrading and retrofitting municipal wastewater treatment plants was investigated at laboratory scale using Moving Bed Biofilm Reactor (MBBR) process. For this purpose, an aerobic pilot was operated for nearly one year in different conditions, in which a moving bed carrier with a specific biofilm surface area of 500 m2\m3 and a filling rate of 60% was utilized. System efficiency in removal of BOD5 and COD was examined at different hydraulic retention times (HRTs) of 1, 1.5, 2, 2.5, 3 and 4 h. The obtained results indicated high ability of the system to tolerate organic loading and to remain stable at a high food to microorganism (F\M) ratio. The system produced effluents with good quality at low HRTs and led to an average BOD5 removal efficiency of nearly 88% during the operational period. The Organic Loading Rate (OLR) applied to the system had a range of 0.73–3.48 kgBOD5\m3.day and 2.43–11.6 gBOD5\m2.day, at which the reactor showed a good performance and stability. In general, it was concluded that (MBBR) can be an excellent alternative for upgrading and optimizing municipal wastewater treatment plants

۲Effect of Magnetic Field on Surface Morphology and Magnetic Properties of FeCu\Cu Nano layers Prepared by Electrodeposition Technique: Investigation of Magneto–hydrodynamic Effect
نویسنده(ها): ، ،
اطلاعات انتشار: Journal of Nano Structures، پنجم،شماره۴، ۲۰۱۵، سال
تعداد صفحات: ۶
In this paper, the effect of magnetic field on the morphology, structure and magnetic properties of electrodeposited FeCu\Cu thin films was investigated. The films were deposited on Au2PdAg\glass substrates using electrodeposition technique in potentiostatic control. The magnetic fields of 5000 and 7000 Oe were applied on deposition bath during deposition. Two series of thin films were prepared in the same deposition conditions, one in the presence and the other in absence of magnetic field and the products were compared. The results indicate that applying the magnetic field has a significant effect on the growth process, i.e. morphology, crystal structure and magnetic properties of the films. The morphology and structure of the FeCu\Cu Nano layers were studied using X–ray diffraction (XRD) and scanning electron microscopy (SEM). The weight percentages of the elements in the deposited multilayers were determined by energy dispersive X–ray spectroscopy (EDS). Magnetic properties of thin films were studied using the vibrating sample magnetometer (VSM).
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