Search for: mirbagheri--s--a
0.033 seconds

    The combined UASB and MBR system to COD and TSS removal and excess sludge reduction for the treatment of high strength wastewater in various operational temperatures

    , Article Desalination and Water Treatment ; Volume 53, Issue 2 , 2015 , Pages 352-359 ; 19443994 (ISSN) Farajzadehha, S ; Shayegan, J ; Mirbagheri, S. A ; Farajzadehha, S ; Hazrati, H ; Sharif University of Technology
    Taylor and Francis Inc  2015
    There are many activated sludge plants (ASP) in Iran. Most of them are overloaded and as a result their efficiency is very low. A combined laboratory-scale system (5 L reactors) consisting of an up-flow anaerobic sludge blanket (UASB) and aerobic membrane bioreactor (MBR) was operated at 20 and 30°C with pH between 7.6 and 8.4. The experiment was run to optimize treatment of high-strength enriched municipal wastewater of the Ekbatan treatment plant located in west Tehran. The chemical oxygen demand (COD) of the wastewater was enriched due to the addition of molasses and milk powder. To prevent pH fluctuation of the influent, NaHCO3 and K2HPO4 were added to the wastewater. The excess sludge... 

    Conceptual hydrosalinity model for prediction of salt load from wastewater flows into soil and ground water

    , Article International Journal of Environmental Science and Technology ; Volume 6, Issue 3 , 2009 , Pages 359-368 ; 17351472 (ISSN) Abbaspour, M ; Mirbagheri, S. A ; Monavvari, M ; Javid, A. H ; Zarei, H ; Sharif University of Technology
    Dynamic hydrosalinity models are available, but are not used extensively on a large scale soil which receives wastewater from industrial areas, partly because adequate database are expensive to be obtained. Thus, for this reason, there is an urgent need to assess the salt and other pollutant loads collected in wastewater flows into the soil and/ or ground water systems. A conceptual hydrosalinity model was used on two major underlying principals of mass balance and steady state. This model was initially tested on the 4,117 km2 plains west of the Yazd-Ardakan district in the central part of Iran. This model was used at a time when the soil and ground water salinity problem was serious due to... 

    Investigating sensitivity of flow parameters and uncertainty analysis of nutrient transport and dispersion model in shallow water. (Case study: Peer-bazar river and anzali wetland)

    , Article Desalination and Water Treatment ; Volume 174 , 2020 , Pages 204-214 Homami, M ; Mirbagheri, S. A ; Borghei, S. M ; Abbaspour, M ; Sharif University of Technology
    Desalination Publications  2020
    Accurate modeling of runoff in watersheds requires calibration and uncertainty analysis of effective flow parameters and identifying of their statistical characteristics based on inter-parameter relationships and model inputs. In this research, the transport and diffusion of pollution (nutrients) in the river were simulated through the two-dimensional finite-volume method using the shallow water equations. To numerically solve these equations, the governing equations were converted into linear equations. Uncertainty and sensitivity of the prepared pollution model were analyzed to achieve better results in estimating pollution concentrations in rivers within a reliable range. In this study,... 

    Comparison of ozonation and aeration methods in removal of naphthalene from aqueous solution

    , Article Asian Journal of Chemistry ; Volume 25, Issue 16 , 2013 , Pages 9135-9137 ; 09707077 (ISSN) Derikvand, E ; Borghei, S. M ; Hassani, A. H ; Mirbagheri, S. A ; Javid, A. H ; Sharif University of Technology
    High molecular mass of naphthalene make it non-biodegradable and the biological methods for treated the pollutant are much time consuming. In this paper, two methods of ozonation and aeration are used to remove naphthalene. Because of the industrial wastewater has a great range of pH, in this study different concentrations of soluble naphthalene are placed in variable pH conditions, different contact times and changes in amount of aeration and ozonation. ANOVA results indicated a significant difference between two methods. The average removal of naphthalene by use of ozonation is 55 % and 37 % for aeration. As results, the best conditions that naphthalene are removed is in acidic environment...