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- W2053629953 abstract "Abstract Our new technique for produced water treatment removes the oil rapidly and uses a compact system comprising a flocculation unit, a rotating filter, and a magnetic separator with a superconducting magnet. The strong field of the superconducting magnet enables oil to be removed from oily water continuously at a high rate. After preliminary laboratory tests we constructed a prototype treatment system that can treat 100 m3/day. Field test results agreed with the laboratory test results and showed that this system reduced to effluent concentrations less than 5 mg/L. This technique is suitable for use on offshore platforms because the treatment system is compact and the high removal rate it provides prevents environmental pollution when the effluent is dumped into the sea. This technique is applicable to the treatment not only of produced water but also of sewage, industrial waste, and polluted water. Introduction Offshore oil production is normally maintained by injecting seawater into oil reservoirs, increasing the oil pressure but also increasing the water-to-oil ratio year by year. Furthermore, since the water extracted from the oil contains much oil, it has a large impact on the environment when it is dumped back into ocean. Thus, there is a need for high-performance equipment separating oil from water. And because space is at a premium on offshore oil platforms, this equipment should be compact. New Oil-Separation System System Flow. Figure 1 shows a flow diagram for our new oilseparation system, which is designed to treat the water initially removed from the raw crude and should thus be installed downstream from a two-phase or three-phase separator. As shown in Figure 1, it consists of four components: a flocculation unit that gathers the oil particles in the water and generates magnetic flocs, a rotating filter that filters the magnetic flocs from the water, a magnetic separator that attracts the magnetic flocs from the surface of the rotating filter and collects them as highly concentrated oil sludge, and a sludge treatment unit that decomposes the oil sludge and recovers oil. The chemicals added in the flocculation unit are also recovered in the sludge treatment unit and recycled. Figure 2 shows samples of the influent and the effluent, which is so clear that it can be dumped into the sea with little impact. Flocculation Unit. The flocculation unit is where ferromagnetic particles, a coagulant, and a polymer are injected into the influent, which is then stirred and mixed to generate magnetic flocs containing oil particulates and ferromagnetic particles. Micrographs of the emulsified oil in the influent water and of the magnetic flocs after flocculation (Fig. 3) show that although the emulsified oil particles are typically only a few micrometers in diameter, most of the magnetic flocs are more than one hundred micrometers in diameter." @default.
- W2053629953 created "2016-06-24" @default.
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- W2053629953 date "2004-05-03" @default.
- W2053629953 modified "2023-10-16" @default.
- W2053629953 title "New Technique Using Superconducting Magnetic Separation to Remove Oil From Water" @default.
- W2053629953 doi "https://doi.org/10.4043/16243-ms" @default.
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