| 摘要 |
PROBLEM TO BE SOLVED: To provide a treating method for treating nitrogen resulting from thiourea in≤50 mg/l, also without requiring a sophisticated apparatus and capable of treating in an open system. SOLUTION: In a method for decomposing to remove a nitrogen content from a waste liquid containing thiourea, the method for treating the waste liquid containing thiourea is characterized by combining a process for adding an oxidizer to the waste liquid to convert thiourea into urea with a process for adding hypochlorous acid, hypobromous acid or the salt thereof to decompose into nitrogen gas and decomposing the nitrogen content included in thiourea into the nitrogen gas to remove, and its apparatus. COPYRIGHT: (C)2006,JPO&NCIPI
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