METHOD AND APPARATUS FOR PURIFYING EMULSIFIED OIL-CONTAINING WASTE WATER

METHOD AND APPARATUS FOR PURIFYING EMULSIFIED OIL-CONTAINING WASTE WATER

To purify emulsified oil-containing waste water to a higher level than before.SOLUTION: There is provided a purification method for recovering water from emulsified oil-containing waste water containing oil-in-water emulsion and separated oil not constituting emulsion, the method including: adding a...

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1. Verfasser: TAKENO TAKAHIRO
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Sprache:eng ; jpn
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CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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description To purify emulsified oil-containing waste water to a higher level than before.SOLUTION: There is provided a purification method for recovering water from emulsified oil-containing waste water containing oil-in-water emulsion and separated oil not constituting emulsion, the method including: adding a flocculating agent to the emulsified oil-containing waste water to flocculate and remove the separated oil; adding an oil-water separating agent to the emulsified oil-containing waste water to break the emulsion; bringing the emulsified oil-containing waste water that has undergone flocculation and emulsion breakage into contact with activated charcoal so as to remove oil separated by the emulsion breakage by adsorption on the activated charcoal; and removing impurities by passing the emulsified oil-containing wastewater that has undergone the adsorption process through a reverse osmosis membrane. Prior to the adsorption step, a neutralizing agent may be added to the emulsified oil-containing waste water that has undergone the emulsion breaking step to bring pH of the emulsified oil-containing waste water closer to neutrality.SELECTED DRAWING: Figure 1 【課題】エマルション性含油廃水を従来よりも高いレベルにまで浄化する。【解決手段】水中油滴型のエマルション及びエマルションを構成していない分離油を含むエマルション性含油廃水から水を回収する浄化方法は、エマルション性含油廃水に凝集剤を添加して分離油を凝集させて除去すること、エマルション性含油廃水に油水分離剤を添加してエマルション破壊を行うこと、凝集及びエマルション破壊を経たエマルション性含油廃水を活性炭に接触させることによりエマルション破壊によって分離された油を活性炭に吸着させて除去すること及び吸着工程を経たエマルション性含油廃水を逆浸透膜に通して不純物を除去することを含む。吸着工程の前に、エマルション破壊工程を経たエマルション性含油廃水に中和剤を添加してエマルション性含油廃水のｐＨを中性に近づけてもよい。【選択図】図１
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Prior to the adsorption step, a neutralizing agent may be added to the emulsified oil-containing waste water that has undergone the emulsion breaking step to bring pH of the emulsified oil-containing waste water closer to neutrality.SELECTED DRAWING: Figure 1 【課題】エマルション性含油廃水を従来よりも高いレベルにまで浄化する。【解決手段】水中油滴型のエマルション及びエマルションを構成していない分離油を含むエマルション性含油廃水から水を回収する浄化方法は、エマルション性含油廃水に凝集剤を添加して分離油を凝集させて除去すること、エマルション性含油廃水に油水分離剤を添加してエマルション破壊を行うこと、凝集及びエマルション破壊を経たエマルション性含油廃水を活性炭に接触させることによりエマルション破壊によって分離された油を活性炭に吸着させて除去すること及び吸着工程を経たエマルション性含油廃水を逆浸透膜に通して不純物を除去することを含む。吸着工程の前に、エマルション破壊工程を経たエマルション性含油廃水に中和剤を添加してエマルション性含油廃水のｐＨを中性に近づけてもよい。【選択図】図１</abstract><oa>free_for_read</oa></addata></record>
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subjects CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
title METHOD AND APPARATUS FOR PURIFYING EMULSIFIED OIL-CONTAINING WASTE WATER
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