Method for treating organic wastewater based on catalytic wet oxidation method
A technology for catalyzing wet oxidation and organic wastewater, which is applied in the fields of oxidizing water/sewage treatment, chemical instruments and methods, chemical elements of heterogeneous catalysts, etc. Good and good catalytic activity
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Embodiment 1
[0025] The copper nitrate, cobalt nitrate was added to the deionized water in a ratio of 1: 1, stirred to a solid dissolved, and the mixed metal salt solution having a mass concentration of 5% was produced, and the mass concentration was added dropwise to the mixed metal salt solution. The 28% aqueous ammonia solution regulates the pH of the solution of 9-10, and stirred while the side is added, and the end of the reaction is stirred at room temperature. After 12 h at ° C, the dried solid was ground by 80 mesh sieve and placed at the muffle furnace at 500 ° C for 4 h. After the calcination was completed, the furnace was cooled to room temperature, and the baked solid was grounded to the sieve treatment, resulting in a catalyst Material;
[0026] The resulting catalyst was added to the tubular reactor, and hydrazine was added to the tubular reactor, and the amount of the catalyst was added to 1000 ppm, and the oxygen until oxygen diced was 2 MPa, heated to 220 ° C, at 400 rpm The s...
Embodiment 2
[0028] The copper nitrate, cobalt nitrate was added to deionized water in a ratio of 1: 3, stirred to a solid dissolved, and the mixed metal salt solution having a mass concentration of 5% was produced, and the mass concentration was added to the mixed metal salt solution. The 28% ammonia solution regulates the pH of the solution of 9-10, and stirred while drying. After the end of the end of the end, the temperature is mixed. After 12 h at ° C, the dried solid was ground to 80 mesh sieve, and was taken at a muffle furnace at 650 ° C for 4 h. After the calcination, the furnace was cooled to room temperature, and the baked solid was grounded to the sieve treatment, resulting in a catalyst Material;
[0029] The resulting catalyst was added to the tubular reactor, and the indole wastewater was added to the tube reactor, and the amount of the catalyst was used to be 1000 ppm, and the oxygen until oxygen was separated by 2 MPa, heated to 230 ° C, at 400 rpm The stirring treatment was s...
Embodiment 3
[0031] The copper nitrate, cobalt nitrate was added to deionized water in a ratio of 1: 3, stirred to a solid dissolved, and the mixed metal salt solution having a mass concentration of 5% was produced, and the mass concentration was added to the mixed metal salt solution. The 28% aqueous ammonia solution regulates the pH of the solution of 9-10, and stirred while the side is added, and the end of the reaction is stirred at room temperature. After 12 h at ° C, the dried solid was ground by 80 mesh sieve, and was placed at a muffle furnace for 5 h at 400 ° C, and the furnace was cooled to room temperature after the calcination, and the baked solid was grounded to the sieve treatment to obtain a catalyst. Material;
[0032] The resulting catalyst was added to the tubular reactor, and the hydrazine wastewater was added to the tubular reactor, the amount of the catalyst was 1500 ppm, and the oxygen until oxygen was 1.5 MPa, heated to 200 ° C, at 400 rpm The stirring treatment was stir...
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