Analytical Examination of Oil/Water Separation by Coalescence

1973 ◽  
Vol 1973 (1) ◽  
pp. 403-408 ◽  
Author(s):  
Stanley M. Finger ◽  
T. S. Yu
Keyword(s):  
Separation System ◽  
Oil Viscosity ◽  
Water Separation ◽  
Physical Separation ◽  
Solids Concentration ◽  
Water Feed ◽  
Oil Water Separation ◽  
Oil Concentration ◽  
Oily Water ◽  
Oil Water

ABSTRACT The physical separation process of coalescence has been studied analytically under controlled conditions in regard to the separation of oil from oily water mixtures. Variations in coalescer performance were studied as a function of the oily water feed to a three stage prototype separation system of which coalescence was the final stage. The data were analyzed statistically and it was shown that increasing suspended solids concentration, increasing oil viscosity, and increasing oil concentration decreased coalescer element lifetime, however, above a certain level increasing oil concentration had no effect. Variations in the total flow rate in the range of one to four gallons per minute per square foot did not have a significant effect on coalescer element life. Under all conditions studied, the effluent water contained less than 15 parts per million oil, only ten percent of the samples analyzed contained more than this amount. The results indicate that coalescence is useful as a final polishing step in an oil/water separation system.

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.

Synthesis of graphene oxide–SiO2 coated mesh film and its properties on oil–water separation and antibacterial activity

2015 ◽  
Vol 73 (5) ◽  
pp. 1098-1103 ◽  
Author(s):  
Jun Liu ◽  
Wanxia He ◽  
Peng Li ◽  
Siying Xia ◽  
Xiaomeng Lü ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Environmental Stability ◽  
Layer By Layer ◽  
Oily Wastewater ◽  
Separation System ◽  
Water Separation ◽  
Silica Coatings ◽  
Oil Water Separation ◽  
Oil Water ◽  
Harsh Conditions

Oil–water separation has recently become a worldwide challenge due to the frequent occurrence of oil spill accidents and increasing industrial oily wastewater. In this work, the multifunctional mesh films with underwater oleophobicity and certain bacteriostatic effects are prepared by layer-by-layer assembly of graphene oxide-silica coatings on stainless steel mesh. The mesh film exhibits excellent environmental stability under a series of harsh conditions. The new, facile and reusable separation system is proposed to achieve deep treatment of oily wastewater, and the oil collection rate can reach over 99%.

Electrospun fibers for oil–water separation

RSC Advances ◽  
2016 ◽  
Vol 6 (16) ◽  
pp. 12868-12884 ◽  
Author(s):  
Wenjing Ma ◽  
Qilu Zhang ◽  
Dawei Hua ◽  
Ranhua Xiong ◽  
Juntao Zhao ◽  
...  
Keyword(s):  
Oil Pollution ◽  
Electrospun Fibers ◽  
Water Separation ◽  
New Techniques ◽  
Oil Water Separation ◽  
Oily Water ◽  
Oil Water

The increasing worldwide oil pollution intensifies the needs for new techniques of separation of oil from oily water.

SLOP TANK DESIGN FOR IMPROVED LOAD-ON-TOP

1975 ◽  
Vol 1975 (1) ◽  
pp. 195-200
Author(s):  
Robert J. Fiocco ◽  
Vincent W. Ridley
Keyword(s):  
Large Scale ◽  
Focal Point ◽  
Operational Flexibility ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oily Water ◽  
Oil Water ◽  
Tank Design ◽  
Oil Tankers ◽  
Capacity Structure

ABSTRACT Slop tanks are the focal point of the Load-On-Top system used on crude oil tankers to prevent pollution of the sea. Design of these tanks and their operating procedures strongly affect the degree of oil-water separation achieved. This paper presents the results of an investigation undertaken to define designs and procedures for improving separation and minimizing oil discharge to sea. The program was funded in part by the U.S. Maritime Administration. Based on tanker experience and laboratory tests with tank models, guidelines on capacity, structure, inlets, outlets, system design, and wastewater handling, procedures were developed. The guidelines aim at assuring successful Load-On-Top operations by (1) providing tanker operational flexibility for handling oily water, (2) minimizing the degree of oil-water mixing, (3) avoiding re-dispersion of separated oil during feeding and discharging operations, and (4) eliminating the possibility of accidental oil contamination. This investigation provides a basis for future large-scale or shipboard studies to improve the performance of slop tanks on existing tankers as well as on future tankers.

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.

CONTROLLING THE PERFORMANCE OF A CYCLONIC OIL-WATER SEPARATION SYSTEM

2006 ◽  
Vol 39 (2) ◽  
pp. 391-396
Author(s):  
Giovani Cavalcanti Nunes ◽  
Magno Antonio Calil ◽  
Enrique Luis Lima
Keyword(s):  
Separation System ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water
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