scholarly journals Non-Isothermal Treatment of Oily Waters Using Ceramic Membrane: A Numerical Investigation

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 2092
Author(s):  
Hortência L. F. Magalhães ◽  
Gicelia Moreira ◽  
Ricardo S. Gomez ◽  
Túlio R. N. Porto ◽  
Balbina R. B. Correia ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Produced Water ◽  
Ceramic Membrane ◽  
Membrane Separation ◽  
Fluid Dynamic ◽  
Flow Behavior ◽  
Isothermal Treatment ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Concentration

Currently, the oil industry deals with the challenge of produced-water proper disposal, and the membrane-separation technology appears as an important tool on the treatment of these waters. In this sense, this work developed a mathematical model for simulating the oil/water separation by a ceramic membrane. The aim was to investigate the thermal aspects of the separation process via computational fluid dynamic, using the Ansys CFX® 15 software (15, Ansys, Inc., Canonsburg, PA, USA). Oil concentration, pressure, and velocity distributions, as well as permeation velocity, are presented and analyzed. It was verified that the mathematical model was capable of accurately representing the studied phenomena and that temperature strongly influences the flow behavior.

Mass Transfer in Tubular Ceramic Membranes for Polluted Water Treatment - Numerical Simulation

2018 ◽  
Vol 20 ◽  
pp. 16-33 ◽  
Author(s):  
J. Saraiva de Souza ◽  
S. José dos Santos Filho ◽  
Severino Rodrigues de Farias Neto ◽  
A.G. Barbosa de Lima ◽  
H.A. Luma Fernandes Magalhães
Keyword(s):  
Mass Transfer ◽  
Water Treatment ◽  
Produced Water ◽  
Ceramic Membrane ◽  
Porous Ceramic ◽  
Ceramic Membranes ◽  
Numerical Results ◽  
Polluted Water ◽  
Separation Processes ◽  
Water Separation

Innovative technologies are needed to attend the increasingly strict requirements for produced water treatment, since most of the separation processes are limited to particles larger than 10 μm. Separation processes using ceramic membranes are attracting great interest from academic and industrial community. Nevertheless, few studies, especially numerical, regarding the inorganic membrane’s application for the polluted water separation have been reported. In the present work, therefore, a study of fluid-flow dynamics for a laminar regime in porous tubes (tubular porous ceramic membrane) has been performed. The mass, momentum and mass transport conservation equations were solved with the aid of a structured mesh using ANSYS CFX commercial package. The velocity of local permeation was determined using the resistance in series model. The specific resistance of the polarized layer was obtained by Carman-Kozeny equation. The numerical results were evaluated and compared with the results available in the literature, where by a good agreement with each other was found. The numerical results, obtained by the proposed shell and tubular membrane separation module, indicate that there is facilitation of mass transfer and hence a reduction in the thickness of the polarized boundary layer occurs.

scholarly journals Influence of Membrane Vibration on Particles Rejection Using a Slotted Pore Membrane Microfiltration

Membranes ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 709
Author(s):  
Asmat Ullah ◽  
Kamran Alam ◽  
Saad Ullah Khan ◽  
Victor M. Starov
Keyword(s):  
Membrane Fouling ◽  
Produced Water ◽  
Separation Efficiency ◽  
Membrane Surface ◽  
Water Separation ◽  
Oil Droplet ◽  
Pore Blockage ◽  
Oil Water Separation ◽  
Microfiltration Membranes ◽  
Membrane Vibration

A new method is proposed to increase the rejection in microfiltration by applying membrane oscillation, using a new type of microfiltration membrane with slotted pores. The oscillations applied to the membrane surface result in reduced membrane fouling and increased separation efficiency. An exact mathematical solution of the flow in the surrounding solution outside the oscillating membrane is developed. The oscillation results in the appearance of a lift velocity, which moves oil particles away from the membrane. The latter results in both reduced membrane fouling and increased oil droplet rejection. This developed model was supported by the experimental results for oil water separation in the produced water treatment. It was proven that the oil droplet concentration was reduced notably in the permeate, due to the membrane oscillation, and that the applied shear rate caused by the membrane oscillation also reduced pore blockage. A four-times lower oil concentration was recorded in the permeate when the membrane vibration frequency was 25 Hz, compared to without membrane vibration. Newly generated microfiltration membranes with slotted pores were used in the experiments.

Produced Water Handling Using Downhole Oil Water Separation Study Case Onshore & Offshore Fields Abu Dhabi

2021 ◽  
Author(s):  
Abdelhak Ladmia ◽  
Dr. Younes bin Darak Al Blooshi ◽  
Abdullah Alobedli ◽  
Dragoljub Zivanov ◽  
Myrat Kuliyev ◽  
...  
Keyword(s):  
Produced Water ◽  
Operating Cost ◽  
Cost Effective ◽  
Management Tool ◽  
Water Separation ◽  
Field Development ◽  
Effective Manner ◽  
Oil Water Separation ◽  
Oil Water

Abstract The expected profiles of the water produced from the mature ADNOC fields in the coming years imply an important increase and the OPEX of the produced and injected water will increase considerably. This requires in-situ water separation and reinjection. The objective of in-situ fluid separation is to reduce the cost of handling produced water and to extend the well natural flow performance resulting in increased and accelerated production. The current practice of handling produced water is inexpensive in the short term, but it can affect the operating cost and the recovery in the long term as the expected water cut for the next 10-15 years is forecasted to incease significantly. A new water management tool called downhole separation technology was developed. It separates oil and & gas from associated water inside the wellbore to be reinjected back into the disposal wells. The Downhole Oil Water Separation (DHOWS) Technology is one of the key development strategies that can reduce considerable amounts of produced water, improve hydrocarbon recovery, and minimize field development cost by eliminating surface water treatment and handling costs. The main benefits of DHOWS include acceleration of oil offtake, reduction of production cost, lessening produced water volumes, and improved utilization of surface facilities. In effect, DHOWS technologies require specific design criteria to meet the objectives of the well. Therefore, multi--discipline input data are needed to install an effective DHOWS with a robust design that economically outperforms and boosts oil and/or gas productions. This paper describes the fundamental criteria and workflow for selecting the most suitable DHOWS design for new and sidetracked wells to deliver ADNOC production mandates in a cost-effective manner while meeting completion requirements and adhering to reservoir management guidelines.

Research of Water Quality in Typical Low Permeability Oilfield Produced Water Treatment

2014 ◽  
Vol 556-562 ◽  
pp. 867-871
Author(s):  
Qiu Shi Zhao
Keyword(s):  
Water Quality ◽  
Oil Recovery ◽  
Treatment Process ◽  
Produced Water ◽  
Sewage Treatment ◽  
Oil Fields ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oilfield Produced Water ◽  
Oil Water

It is significative to study sewage treatment process in low permeable oil fields. It could enhance the oil recovery. The water quality characteristics and oil/water separation characteristics were researched during different period process by GC-MS. It shows that there are about 108 kinds of organic matters, including 45 kinds of aliphatic hydrocarbon, 7 kinds of aine, 5 kinds of sulfocompound and 9 kinds of hexacyclic compounds, such as Benzene, phenol, naphthalene and anthracene. The percent of oil droplets which size was less than 10μm is 57.3%, compared to 91.6% which size was more than 50μm. It is difficult to separate the water and oil. The remaining oil was emulsified oil. The process was hard to decrease COD, and some pollutants were existed in water, such as Arsenic, Selenium, Mercury ,Cadmium and Cr6+. It is further proposed to optimize and develop this process to removal oil and suspended solids.

Oily Water Treatment Using Ceramic Membrane in Presence of Swirling Flow Induced by a Tangential Inlet via CFD

2014 ◽  
Vol 348 ◽  
pp. 51-57 ◽  
Author(s):  
Tássia Vieira Mota ◽  
Helton Gomes Alves ◽  
Severino Rodrigues Farias Neto ◽  
Antônio Gilson Barbosa de Lima
Keyword(s):  
Ceramic Membrane ◽  
Volume Fraction ◽  
Ceramic Membranes ◽  
Particle Model ◽  
Water Separation ◽  
Significant Difference ◽  
Oil Water Separation ◽  
Oily Water ◽  
Oil Water ◽  
Tangential Inlet

In recent years, attention has been given to the processes controlling the emission of oily effluents and their environmental impact. Many industrial processes generate large volumes of water contaminated with oil, called oily waters. The oily water must be treated before its discard in order to meet the criteria established by environmental agencies (for example in Brazil, 20 mg/L). In present days, the process of separating oil/water with ceramic membranes has attracted the attention of many researchers [1,2]. In this sense, the aim of this study is to evaluate the influence of the tangential inlet shape in the oil/water separation via ceramic membranes. We use a mathematical multiphase flow model to describe the oil-water separation, based on the particle model. Here oil is the dispersed phase while water the continuous phase. To model the turbulence effect we use the RNGk-εmodel. All simulations were carried out using the Ansys CFX ® commercial code. Results of streamlines and velocity, pressure and volume fraction of phase fields are present and analyzed. The numerical results indicate that no significant difference when using a circular or rectangular pipe with the same cross-sectional area.

Feasibility Study on Membrane Technology for Ship Oil-Water Separation in China

2015 ◽  
Vol 1092-1093 ◽  
pp. 856-861
Author(s):  
Ou Chen Cai ◽  
Jun Feng Chen ◽  
Wei Zhang
Keyword(s):  
Membrane Filtration ◽  
Membrane Technology ◽  
Preliminary Treatment ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Concentration ◽  
Oily Water ◽  
Oil Water ◽  
Oily Water Treatment ◽  
Filtration Device

The case study of membrane technology applied in oily water treatment in petrochemical industry demonstrated that it is also technically feasible in ship oil-water separation in China. Based on the analysis of the membrane technological parameter selection, a practical ship oil-water separator has been designed, which consists of two-stage devices, a preliminary treatment device and a membrane filtration device for advanced treatment. The pore size and the hydrophilicity of the membrane should be decided by the influent oil content; the operating temperature could be the influent temperature; the TMP should be controlled at 0.1-0.2 MPa; the influent oil concentration and flux should be modified by the preliminary treatment device so they are appropriate for the membrane filtration device.

Experiment Study of Demulsifier on the Oily Wastewater Treatment

2014 ◽  
Vol 945-949 ◽  
pp. 3475-3478
Author(s):  
Bao Jun Liu ◽  
Jing Cheng Shi ◽  
Li Ping Guo ◽  
Yin Peng Li
Keyword(s):  
Produced Water ◽  
Oily Wastewater ◽  
Experiment Study ◽  
Water Separation ◽  
Action Time ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oily Wastewater Treatment ◽  
Average Size ◽  
Selection Of

Adopts the method of adding demulsifiers into the oily wastewater to increase the droplets size to further improve the efficiency of oil-water separation, and puts forward the corresponding optimized indicators and methods of demulsifiers. The optimized selection of the demulsifiers and its additive dosage was carried out by indoor experiments based on the optimized indicators. Using artificial produced water to test the treatment effect of the optimized demulsifier at different action time. The experiments show that demulsifier S1 with additive dosage of 20mg/l can accordance with the requirements of the processing very well, and as the increase of action time, the average size of droplets increase and the amount of the droplets which under 1μm decrease.

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