Patent application number | Description | Published |
20080255400 | Hydrotalcite-Like Substance, Process for Producing the Same and Method of Immobilizing Hazardous Substance - A hydrotalcite-like substance that is capable of ion exchange with target anions, being of small crystal size and that exhibits large basal spacing, excelling in anion exchange performance; a process for producing the same; and a method of immobilizing hazardous substances. A hydrotalcite-like substance is produced by mixing an acidic solution containing aluminum ions and magnesium ions with an alkaline solution containing an alkali to thereby synthesize a hydrotalcite-like substance, followed by, without ageing, water removal or neutralization. The molar ratio of aluminum ions and magnesium ions is preferably in the range of 1:5 to 1:2. Hazardous substances can be immobilized by pulverizing the hydrotalcite-like substance after synthesis and adding the powder to a subject, or adding a hydrotalcite-like substance in slurry form to a subject, or carrying out addition so as to cause the synthesis directly at the position of the subject. Furthermore, anion adsorption can be performed by a filter containing the hydrotalcite-like substance. | 10-16-2008 |
20120234767 | COPPER RECOVERY APPARATUS AND COPPER RECOVERY METHOD - According to one embodiment, a copper recovery apparatus includes a precipitation tank configured to precipitate copper hydroxide grains in water, a filter aid supplyer, a mixing tank configured to mix the filter aid with a water to produce a suspension, a separator provided with a filter, a line configured to supply the suspension to the separator, thereby forming a precoat layer formed of the filter aid on the filter, a separation tank configured to receive the detached matter of the precoat layer discharged together with the detaching water from the separator to magnetically separate copper hydroxide grains and filter aid, a line configure to discharge and recover the detaching water from the separation tank, and a line configured to return the separated filter aid to the filter aid supplyer from the separation tank. | 09-20-2012 |
20120234768 | RESIN COMPOSITE, FILTER AID FOR WATER TREATMENT, PRECOAT MATERIAL FOR WATER TREATMENT, AND WATER TREATMENT METHOD - According to one embodiment, a magnetic material coated resin includes an aggregate obtainable by aggregation of primary particles includes magnetic particles of which surfaces are coated with a polymer. The primary particles have an average diameter D | 09-20-2012 |
20120238003 | MICROORGANISM CONCENTRATING APPARATUS AND METHOD - A microorganism-concentrating apparatus according to one embodiment includes a mixing device, a filtering device, and a magnetic separation device. The mixing device is configured to mix an aqueous suspension of microorganisms with a particulate filter aid includes magnetic particles to prepare an aqueous slurry of the microorganisms and the particulate filter aid. The filtering device is configured to filter the aqueous slurry supplied from the mixing device to provide a filter cake includes the microorganisms and the particulate filter aid, and to provide a filtrate. The magnetic separation device is configured to magnetically separate the filter cake supplied from the filtering device into the microorganisms and the particulate filter aid. | 09-20-2012 |
20120288435 | FLUORINE RECOVERING APPARATUS AND METHOD FOR RECOVERING FLUORINE - According to one embodiment, a fluorine recovering apparatus includes a precipitating device allowing fluoride ion-containing water to react with calcium source to form precipitate, a mixing tank mixing a filter aid including particles of a magnetic material having a diameter of 0.5 to 5 μm with a dispersion medium to produce slurry, a filter aid feeder to the mixing tank, a solid-liquid separator with a filter depositing a filter aid layer, and depositing the precipitate on the filter aid layer, a cleaning mechanism removing the filter aid and the precipitate, a separating tank separating the filter aid and the precipitate, and a returning mechanism returning the filter aid to the filter aid feeder. | 11-15-2012 |
20120312727 | COPPER RECOVERY APPARATUS - According to one embodiment, a copper recovery apparatus includes a precipitation tank, a mixing tank, a filter-aid feeder, a solid-liquid separator includes a filter, a cleaning-water supply line, a cleaning-water discharge line, a separation tank, and a filter-aid return line. The precipitation tank is configured to receive copper ions-containing water to be treated and an alkali to prepare treated water containing a precipitate of copper compound. The solid-liquid separator is configured to allow the treated water to be passed through the filter on which the precoat layer is deposited to separate the precipitate retained on the precoat layer from a filtrate. | 12-13-2012 |
20130267754 | HYDROTALCITE-LIKE SUBSTANCE, PROCESS FOR PRODUCING THE SAME AND METHOD OF IMMOBILIZING HAZARDOUS SUBSTANCE - A hydrotalcite-like substance capable of ion exchange with target anions, being of small crystal size that exhibits large basal spacing and excels at anion exchange performance; a process for producing the same; and a method of immobilizing hazardous substances. The hydrotalcite-like substance is produced by mixing an acidic solution containing aluminum and magnesium ions with an alkaline solution containing an alkali to synthesize a hydrotalcite-like substance, followed by, without ageing, water removal or neutralization. The molar ratio of aluminum ions and magnesium ions is preferably in the range of 1:5 to 1:2. Hazardous substances can be immobilized by pulverizing the hydrotalcite-like substance after synthesis and adding the powder to a subject, or adding a hydrotalcite-like substance in slurry form to a subject, or carrying out addition so as to cause the synthesis directly at the position of the subject. Furthermore, anion adsorption can be performed by a filter containing the hydrotalcite-like substance. | 10-10-2013 |
20140039236 | HYDROTALCITE LIKE SUBSTANCE, PROCESS FOR PRODUCING THE SAME AND METHOD OF IMMOBILIZING HAZARDOUS SUBSTANCE - A hydrotalcite-like substance capable of ion exchange with target anions, being of small crystal size that exhibits large basal spacing and excels at anion exchange performance; a process for producing the same; and a method of immobilizing hazardous substances. The hydrotalcite-like substance is produced by mixing an acidic solution containing aluminum and magnesium ions with an alkaline solution containing an alkali to synthesize a hydrotalcite-like substance, followed by, without ageing, water removal or neutralization. The molar ratio of aluminum ions and magnesium ions is preferably in the range of 1:5 to 1:2. Hazardous substances can be immobilized by pulverizing the hydrotalcite-like substance after synthesis and adding the powder to a subject, or adding a hydrotalcite-like substance in slurry form to a subject, or carrying out addition so as to cause the synthesis directly at the position of the subject. Furthermore, anion adsorption can be performed by a filter containing the hydrotalcite-like substance. | 02-06-2014 |
20140239225 | Water-Selective Adsorbent and Method for Producing Same - The present invention relates to a water-selective adsorbent and a method for producing the water-selective adsorbent. The water-selective adsorbent includes: a water-selective adsorbent main body that includes a porous body having a plurality of pores and at least one kind of deliquescent substance contained (supported) within the pores of the porous body; and a moisture-permeable film that is formed on the surface of the water-selective adsorbent main body so as to block up at least the pores. Consequently, loss (outflow) of the deliquescent substance such as lithium chloride can be suppressed even if adsorption and desorption of moisture are repeated, so that decrease in the moisture adsorption ability can be suppressed. | 08-28-2014 |
20140284256 | COPPER RECOVERY APPARATUS - According to one embodiment, a copper recovery apparatus includes a precipitation tank, a mixing tank, a filter-aid feeder, a solid-liquid separator includes a filter, a cleaning-water supply line, a cleaning-water discharge line, a separation tank, and a filter-aid return line. The precipitation tank is configured to receive copper ions-containing water to be treated and an alkali to prepare treated water containing a precipitate of copper compound. The solid-liquid separator is configured to allow the treated water to be passed through the filter on which the precoat layer is deposited to separate the precipitate retained on the precoat layer from a filtrate. | 09-25-2014 |
20140377152 | COPPER RECOVERY APPARATUS AND COPPER RECOVERY METHOD - According to one embodiment, a copper recovery apparatus includes a precipitation tank configured to precipitate copper hydroxide grains in water, a filter aid supplier, a mixing tank configured to mix the filter aid with a water to produce a suspension, a separator provided with a filter, a line configured to supply the suspension to the separator, thereby forming a precoat layer formed of the filter aid on the filter, a separation tank configured to receive the detached matter of the precoat layer discharged together with the detaching water from the separator to magnetically separate copper hydroxide grains and filter aid, a line configure to discharge and recover the detaching water from the separation tank, and a line configured to return the separated filter aid to the filter aid supplier from the separation tank. | 12-25-2014 |