Lub tshuab ntsuas ua haujlwm siv txoj kev ntsuas dichromate oxidation txheem. Nws kos cov qauv dej tsis tu ncua, ntxiv cov ntim ntawm potassium dichromate (K₂Cr₂O₇) oxidant thiab concentrated sulfuric acid (H₂SO₄) nrog silver sulfate (Ag₂SO₄) ua tus catalyst, thiab ua kom sov cov khoom sib tov kom ua kom oxidation sai dua. Tom qab zom cov dichromate seem raug ntsuas los ntawm colorimetry lossis potentiometric titration. Lub cuab yeej xam COD concentration raws li kev siv oxidant. Cov qauv siab heev suav nrog cov reactors zom cov khoom, cov tshuab txias, thiab cov modules tswj cov khib nyiab kom muaj kev nyab xeeb thiab raug.