Introduction: Extended aeration activated sludge system has a lower sludge production than other activated sludge processes. Due to its high hydraulic retention time (HRT), the tolerance of this process is higher than the shocks caused by increased organic loading rate. The main objective of this study is to evaluate the performance of the aeration system in removing physicochemical and mi...

Background and purpose: The performance of full-scale moving bed biofilm reactor (MBBR) was evaluated as an alternative for upgrading of Kish Island Mirmohana wastewater treatment plant. In this study activated sludge process upgrade to MBBR process and different operating parameters were compared. Materials and Methods: Effect of upgrading on different parameters such as organic loading rate (...

this research was conducted in continuous flow bench scale fixed activated sludge (fas) and anaerobic filter (af). the main objective of the research was to study the feasibility and efficiency of the mentioned systems for cr (vi) removal. in fas reactor, cr (vi) was adsorbed from influent to mlss in the range of 89 to 99 percent and the adsorption followed freundlich isotherm. in af reactor, c...

Numberless research articles in sports sciences are aimed to validate evaluation tests of physical capacity that are specific for the reality of the sportive activities1-5, thus stimulating and monitoring the training effectiveness6. Within this perspective, there are few specific tests for judo7. The fact that judo is a complex modality with several body movements and metabolic interactions, m...

This article proposes a method to precisely estimate the load force of magnetic lead screw (MLS)-based series elastic actuators (SEAs) in real time. The transmissions MLS-based SEAs generally comprise permanent magnets (PMs). Owing pole distortion and characteristic nonlinear PMs, conventional estimation methods are less accurate for than with mechanical springs. In proposed method, MLSs, an ML...

Excess sludge reduction has been a research hotspot for long time. Ultrasonic treatment of excess was an efficient and green pretreatment method, also can be combined with the addition oxidants. To improve effect ultrasound on destruction, hydrogen peroxide (H2O2) added to examine results in current study. The effects ultrasound/hydrogen system release organic matter during destruction process ...

Abstract A continuous lab-scale integrated bio-system was conducted to treat sewage wastewater from Abu-Rawash treatment plant (WWTP). The showed high efficiency in removing chemical oxygen demand (COD), biological (BOD 5 ), and total suspended solids (TSS). experimental analysis results indicated that the maximum COD removal methane yields were 97.6 13.74 mmol CH 4 /Kg at a hydraulic retention...