High-Speed Magnetic Filtration System Using HTS Bulk Magnet for Used Wash Water of Drum

Mishima, Fumihito; Terada, Toru; Ohnishi, T.; Iino, Kazuya; Ueda, Haruhisa; Nishijima, Shigehiro

doi:10.1109/tasc.2009.2018040

Cited by 8 publications

(7 citation statements)

References 8 publications

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“…The equipment has the problems of a large processing space, a long time, a large quantity of secondary sludge and a great maintenance expense. The magnetic force technique could solve the problems and hence the several systems have been developed aiming at to purify the waste water form paper factory [1], the wash water drum [2], the geothermal water [5], the landfill leachate water [6] and groundwater [10].…”

Section: Environmental Preservationmentioning

confidence: 99%

“…The HGMS has been used in practical application such as the wastewater treatment system of paper factory [1], the wash water drum treatment system [2], the recycle system of waste slurry from the solar cell manufacturing [3], the system for river purification [4] and so on. The removing arsenic from geothermal water [5] and purifying the landfill leachate water [6] have been studied and achieved the notable results.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic Force Control Technique for Recycling and Environmental Preservation

Nishijima¹

2012

Progress in Superconductivity and Cryogenics

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Abstract--The applicability of the two types of magnetic separation system, high gradient magnetic separation (HGMS) and Magneto Archimedes method were studied considering the magnetic susceptibility of targeted substances. It was noted that the combination of the two methods can control the almost all the substances, paramagnetic and diamagnetic in addition to ferromagnetic substances. The principle of the methods was given and the conceput of the magnet force control technology is discussed. The practical applications of the technique were introduced together with the new application of HGMS.Abstract: Magnstic force, Magneto-Archimedes, HGMS, Recycling, Purification.

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Section: Environmental Preservationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetic Force Control Technique for Recycling and Environmental Preservation

Nishijima¹

2012

Progress in Superconductivity and Cryogenics

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“…In our system, large floc is captured by high speed magnetic sedimentation device (magnetic sedimentation device) using permanent magnets, and small floc which cannot be captured by the magnets is microfiltrated with the HTS (High temperature superconducting) bulk magnet [4]- [7].…”

Section: Magnetic Separation System Aimed At High Throughput Promentioning

confidence: 99%

Research and Development of Magnetic Purification System for Used Wash Water of Drum

Mishima

Akiyama

Nishijima

2010

IEEE Trans. Appl. Supercond.

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A high gradient magnetic separation system for purifying used wash water of drum was developed. The waste water is a mixture of various types of contaminant. The wastewater is made into floc containing ferromagnetic particles in the magnetic seeding tank. The magnetic seeded waste water is pumped into the high speed magnetic sedimentation device equipped with multiple permanent magnets. The small floc which can not be captured in the device is separated by a high gradient magnetic separation device using HTS (high temperature superconducting) bulk magnet. In the developed separation device, the ferromagnetic filters are installed in the flow channel to generate high magnetic field gradient. The combination of these devices can reduce the load to the magnetic separation system and enables long-time operation.It was found that the COD value can be currently reduced from ca. 200-500 to less than 100 ppm. It was shown that this system satisfies the requirements to be used as a magnetic separation system for the used wash water of drum.

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“…The selective separation of ferrous particle from the polishing wastewater is possible, since ferrous particle is ferromagnetic and ceria is paramagnetic. We applied high gradient magnetic separation (HGMS) system [1]- [5] to the waste fluid by using superconducting magnet and magnetic filters to obtain strong magnetic field and magnetic gradient, which can achieve high-speed and large amount processing. One of the issues for magnetic separation is that the solid content in the polishing wastewater is in aggregated state by addition of flocculant, and there is a possibility that not only ferrous particle but also ceria particle are removed together by magnetic force.…”

Section: Introductionmentioning

confidence: 99%

High Gradient Superconducting Magnetic Separation for Iron Removal From the Glass Polishing Waste

Mishima

Terada

Akiyama

et al. 2011

IEEE Trans. Appl. Supercond.

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Cerium oxide used for glass polishing agent is processed as wastewater mixed with the polishing sludge of the glass. The recycling of cerium oxide may have a large influence on reduction of environmental burden and resources recycling. In the treatment process of wastewater, the complex of cerium oxide and iron flocculant is formed by co-precipitation to clear the fluid. In order to recycle the cerium oxide, it is necessary to eliminate the cohesion and then remove the iron content. In this study, the aggregated particles were dispersed by pH adjustment, and the iron content was separated by the developed high gradient magnetic separation system (HGMS) with superconducting magnet. The optimum condition was examined by calculation and experiment. In addition, we succeeded to remove the silica particle by magneto-Archimedes levitation. It was confirmed that ferrous particles and silica particles can be removed from wastewater by using superconducting bulk magnet, which makes it possible to reuse ceria particle as the polishing agent.Index Terms-Cerium oxide, glass polishing agent, HGMS, magnetic HTS bulk magnet, pH adjustment, silica.

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High-Speed Magnetic Filtration System Using HTS Bulk Magnet for Used Wash Water of Drum

Cited by 8 publications

References 8 publications

Magnetic Force Control Technique for Recycling and Environmental Preservation

Magnetic Force Control Technique for Recycling and Environmental Preservation

Research and Development of Magnetic Purification System for Used Wash Water of Drum

High Gradient Superconducting Magnetic Separation for Iron Removal From the Glass Polishing Waste

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