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saline-wastewater
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Biological removal of phenol from saline wastewater using a moving bed biofilm reactor containing acclimated mixed consortia
, Article SpringerPlus ; Vol. 3, issue. 1 , 2014 , pp. 1-10 ; ISSN: 21931801 ; Ahmadizadeh, K ; Fereshtehnejad, M ; Rostami, M. H ; Safari, M ; Borghei, S. M ; Sharif University of Technology
Abstract
In this study, the performance of an aerobic moving bed biofilm reactor (MBBR) was assessed for the removal of phenol as the sole substrate from saline wastewater. The effect of several parameters namely inlet phenol concentration (200-1200 mg/L), hydraulic retention time (8-24 h), inlet salt content (10-70 g/L), phenol shock loading, hydraulic shock loading and salt shock loading on the performance of the 10 L MBBR inoculated with a mixed culture of active biomass gradually acclimated to phenol and salt were evaluated in terms of phenol and chemical oxygen demand (COD) removal efficiencies. The results indicated that phenol and COD removal efficiencies are affected by HRT, phenol and salt...
Biodegradation of Phenol from Saline Wastewater Using Moving Bed Biofilm Reactor
, M.Sc. Thesis Sharif University of Technology ; Borghei, Mahdi (Supervisor)
Abstract
Many industries such as olive oil mills, petroleum refineries, petrochemical plants and oil field operations generate saline wastewaters containing phenol. The aerobic moving bed biofilm reactor (MBBR) was investigated in this work in order to assess its performance for the degradation and chemical oxygen demand (COD) removal of phenol as the sole substrate from saline wastewater. The effect of inlet concentration of phenol (200–1200mg/L), hydraulic retention time (8–24 h), inlet concentration of salt (10-70gr/L), organic shock loading, hydraulic shock loading and salt shock loading were evaluated on the performance of two 10-liter MBBR seeded with mixed culture of active biomass...
Effect of Salinity on MLE Process Function
,
M.Sc. Thesis
Sharif University of Technology
;
Borghei, Mehdi
(Supervisor)
;
Kariminia Hamedani, Hamidreza
(Supervisor)
Abstract
Removing nitrogen, as one of the most important contaminants of surface and ground water, needs to be considered. Since this material minimizes water quality and makes it useless. On the other hand, many industries as refineries have saline wastewater which their salinity removal is not economical by physical and chemical methods and is often impossible. Although biological treatment of saline wastewater has its problems, biological nitrification and denitrification are efficient and economical methods for nitrogen removal from industries saline wastewater. In this research, moving bed biofilm reactor (MBBR) adopted from Modified LUDZACK – ETTINGER (MLE) method has been used in order to...
Optimal selection of an integrated produced water treatment system in the upstream of oil industry
, Article Process Safety and Environmental Protection ; Volume 117 , 2018 , Pages 67-81 ; 09575820 (ISSN) ; Roshandel, R ; Shayegan, J ; Sharif University of Technology
Institution of Chemical Engineers
2018
Abstract
Produced water (PW), water extracted along with oil, can cause important environmental challenges due to its high volume and salinity and is considered a key factor in the economic exploitation of oil fields. Therefore, making use of a cost-effective integrated system of wastewater treatment is a fundamental requirement in oil and gas industries. In this paper, the integrated PW treatment system is presented using superstructure-based mathematical optimisation methodology which is aimed at minimising the total annual cost. Two distinct scenarios of injection and reuse in industrial scale are considered to propose an efficient and optimal integrated system. The results show that, despite the...
Optimization the Performance of Multi-stage BNR Reactors Based on MBBR Reactor for Biological Removal of Nitrogen and Phosphorus in Saline Wastewater Refinery and Compared with Membrane Bioreactor Systems and USBF
, M.Sc. Thesis Sharif University of Technology ; Borgheei, Mahdi (Supervisor)
Abstract
There are a lot of industry, including refineries with saline wastewater. Biological wastewater treatment saline pose particular problems and leads to plasmolysis microorganisms in the presence of salt. Remove salt from the wastewater before biological treatment by reverse osmosis or ion exchange and other methods are expensive and often impossible. Remove nutrients from wastewater before disposal and give up their saline for nature is essential. Because the these materials, especially nitrogen and phosphorus can degrade water quality and even make it unusable. So that by increasing the concentration of the algae production is also too much and cause eutrophication of water tanks are grown....
Optimization of multistage biological nutrient removal reactors for removal of nitrogen and phosphorus from saline refinery wastewater
, Article International Journal of Environmental Science and Technology ; Volume 17, Issue 12 , 2020 , Pages 4865-4878 ; Borghei, S. M ; Sharif University of Technology
Springer Science and Business Media Deutschland GmbH
2020
Abstract
The present study aimed at investigating the biological treatment of nitrogen and phosphorus from the saline wastewater in various systems. In the end, moving bed biofilm reactor and anaerobic/anoxic/aerobic (AOA) were chosen as the best systems. In the present study, the investigations were carried out in two 24-h and 12-h retention times for three nitrogen concentrations, 200 mg/l, 300 mg/l, and 400 mg/l, two phosphorus concentrations, 14 mg/l and 20 mg/l, three Chemical oxygen demand (COD) concentrations, 800 mg/l, 1000 mg/l, and 1200 mg/l, and four salt concentrations, 10 g/l, 12 g/l, 17 g/l, and 20 g/l. The obtained results indicated that the COD removal percentage was high in a range...