TREATING METHOD OF WASTE LIQUID CONTAINING METAL ELEMENT AND RECOVERY METHOD OF METAL ELEMENT AFTER TREATMENT
PROBLEM TO BE SOLVED: To provide a treating method of waste liquid containing a metal element capable of reducing a secondary waste generation quantity having a high concentration, and a recovery method of the metal element after treatment capable of recovering as an actinoid oxide having a low salt...
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| creator | HAMAGUCHI KAZUHIKO SHIRATO WATARU |
| description | PROBLEM TO BE SOLVED: To provide a treating method of waste liquid containing a metal element capable of reducing a secondary waste generation quantity having a high concentration, and a recovery method of the metal element after treatment capable of recovering as an actinoid oxide having a low salt concentration. SOLUTION: This treating method of the waste liquid containing the metal element includes a process 11 for neutralizing the waste liquid into a range of 2-3.5 of pH by adding and mixing an alkali solution containing NH3or NaOH so as not to generate flocculation precipitate with the waste liquid containing respectively the metal element having the concentration over 1g/l and nitric acid having the concentration over 1N, a process 12 for filling NH3type insoluble tannin inside a column, and a process 13 for allowing the neutralized waste liquid to pass through the column in which the NH3type insoluble tannin is filled to adsorb the metal element. COPYRIGHT: (C)2004,JPO&NCIPI |
| format | Patent |
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SOLUTION: This treating method of the waste liquid containing the metal element includes a process 11 for neutralizing the waste liquid into a range of 2-3.5 of pH by adding and mixing an alkali solution containing NH3or NaOH so as not to generate flocculation precipitate with the waste liquid containing respectively the metal element having the concentration over 1g/l and nitric acid having the concentration over 1N, a process 12 for filling NH3type insoluble tannin inside a column, and a process 13 for allowing the neutralized waste liquid to pass through the column in which the NH3type insoluble tannin is filled to adsorb the metal element. 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| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F DECONTAMINATION ARRANGEMENTS THEREFOR INORGANIC CHEMISTRY METALLURGY NUCLEAR ENGINEERING NUCLEAR PHYSICS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT THEIR RELEVANT APPARATUS TRANSPORTING TREATING RADIOACTIVELY CONTAMINATED MATERIAL TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | TREATING METHOD OF WASTE LIQUID CONTAINING METAL ELEMENT AND RECOVERY METHOD OF METAL ELEMENT AFTER TREATMENT |
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