Ọchịchọ oxygen kemịkalụ, nke a makwaara dị ka oriri oxygen kemịkalụ, ma ọ bụ COD na nkenke, na-eji kemịkalụ oxidants (dị ka potassium dichromate) oxidize na decompose oxidizable ihe (dị ka organic okwu, nitrite, ferrous salts, sulfides, wdg) na mmiri. na mgbe ahụ oriri oxygen bụ calcu ...
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