Method for catalytically oxidizing wastewater by carbonyl iron complex
A technology for catalytic oxidation and carbonyl compounds, applied in chemical instruments and methods, oxidized water/sewage treatment, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problems of complicated treatment process and high treatment cost, and achieve The effect of reducing dosage, expanding the range of pH value and reducing cost
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[0026] Example 1.
[0027] The carbonyl iron complex catalytic oxidation method is used to treat dye wastewater. The mass concentration of COD is 1050mg / L and the pH value is 5.5. Experimental steps: 1) Add carbonyl compound compound, propionaldehyde to dye wastewater; 2) adjust pH value 5.5; 3) Add iron-containing compound ferrous sulfate, the added amount of iron ion is 65mg / L, and the molar ratio of propionaldehyde is 1:1, react at 25℃ for 20 minutes; 5) Add 30% oxidant hydrogen peroxide , The molar ratio of oxidant to iron ion is 30:1, and the oxidation reaction is carried out at 25°C.
[0028] Example 1 control.
[0029] The difference from Example 1 is that no carbonyl-containing compound is added to the dye aqueous solution.
[0030] The amount of oxidant consumed to remove unit mass of COD was 8% more in the control group than in the example.
Example Embodiment
[0031] Example 2.
[0032] The difference from Example 1 is that the added carbonyl compound is propionic acid, the molar ratio of iron ion to propionic acid is 1:4, the pH value is adjusted to 4.5 with sulfuric acid, and the molar ratio of oxidant to iron ion is 35:1, 35 The complexation and oxidation reactions are carried out at ℃ for 10 minutes.
[0033] The amount of oxidant consumed to remove unit mass of COD was 6% more in the control group than in the example.
Example Embodiment
[0034] Example 3.
[0035] The difference from Example 1 is that the added carbonyl compound is butyric acid, the molar ratio of iron ion to butyric acid is 1:3, the pH value is adjusted to 3.5 with sulfuric acid, and the molar ratio of oxidant to iron ion is 45:1, 45 The complexation and oxidation reaction are carried out at ℃, and the complexation reaction is 8 minutes.
[0036] The amount of oxidant consumed to remove unit mass of COD was 6% more in the control group than in the example.
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