Method of Microwave Induced Catalytic Oxidation Treatment of Complexed Heavy Metal Wastewater
A technology of induced catalysis and oxidative treatment, applied in the fields of oxidizing water/sewage treatment, chemical instruments and methods, chemical/physical processes, etc. The effect of industrialized production, shortened processing time, and improved efficiency of network breaking
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Embodiment 1
[0024] (1) Soak 20-mesh activated carbon in 1mol / L nitric acid solution for 24 hours, then rinse repeatedly with distilled water until neutral, and dry at 105°C for later use;
[0025] (2) Weigh 10g of activated carbon soaked in nitric acid and impregnate it in 100mL containing 0.2mol / LFeSO 4 and 0.2mol / LMn(NO 3 ) 2 placed in the mixed solution, placed on a shaker, airtightly oscillated at room temperature for 24 hours, and dried at 105°C for 24 hours to obtain supported activated carbon;
[0026] (3) Put the loaded activated carbon into a quartz glass tube, and calcinate it in a 400W microwave oven for 15min under the protection of nitrogen;
[0027] (4) Take 200mL complex heavy metal (EDTA-Cu-Ni) wastewater, adjust the pH value to 5.0, add 4g loaded activated carbon, mix thoroughly for 30 minutes, then add 4mL30%H 2 o 2 Put the solution into a frequency conversion microwave reactor with a circulating microwave reaction tube, set the temperature at 70°C, and continue the ...
Embodiment 2
[0030](1) Soak 30-mesh activated carbon in 0.5mol / L sulfuric acid solution for 12 hours, then rinse repeatedly with distilled water until neutral, and dry at 105°C for later use;
[0031] (2) Weigh 10g of activated carbon soaked in nitric acid and impregnate it in 100mL containing 0.2mol / LFeSO 4 and 0.3mol / LMn(NO 3 ) 2 placed in the mixed solution, placed on a shaker, airtightly oscillated at room temperature for 24 hours, and dried at 105°C for 24 hours to obtain supported activated carbon;
[0032] (3) Put the loaded activated carbon into a quartz glass tube, and calcinate it in a 300W microwave oven for 15min under the protection of nitrogen;
[0033] (4) Take 200mL of complexed heavy metal (EDTA-Cu-Ni) wastewater, adjust the pH to 4.0, add 2g of loaded activated carbon, mix thoroughly for 40 minutes, and then add 6mL of 30%H 2 o 2 Put the solution into a frequency conversion microwave reactor with a circulating microwave reaction tube, set the temperature at 75°C, and ...
Embodiment 3
[0036] (1) Soak 50-mesh activated carbon in 1.5mol / L nitric acid solution for 24 hours, then rinse repeatedly with distilled water until neutral, and dry at 105°C for later use;
[0037] (2) Weigh 10g of activated carbon soaked in nitric acid and impregnate it in 100mL containing 0.3mol / LFeSO 4 and 0.1mol / LMn(NO 3 ) 2 placed in the mixed solution, placed on a shaker, airtightly oscillated at room temperature for 24 hours, and dried at 105°C for 24 hours to obtain supported activated carbon;
[0038] (3) Put the loaded activated carbon into a quartz glass tube, and calcinate it in a 400W microwave oven for 15min under the protection of nitrogen;
[0039] (4) Take 200mL of complexed heavy metal (EDTA-Cu-Ni) wastewater, adjust the pH to 3.0, add 4g of loaded activated carbon, mix thoroughly for 30 minutes, and then add 2mL of 30%H 2 o 2 Put the solution into a frequency conversion microwave reactor with a circulating microwave reaction tube, set the temperature at 75°C, and c...
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