Method for degrading disperse dye wastewater by activating peroxymonosulfate with sludge-based catalyst
A technology of monosulfate and disperse dyes, which is applied in the technical field of sludge resource utilization and water treatment, can solve the problems of complex and cumbersome preparation process, and achieve the effects of wide source of raw materials, high reusability and enhanced catalytic ability
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Embodiment 1
[0033] Preparation of sludge-based catalyst: After the sludge taken from the sludge dehydration workshop is naturally air-dried (the moisture content after air-drying is 7-10%), it is pulverized and sieved, and the particles with a particle size of 1-2 mm are selected, and the above-mentioned obtained The particles were transferred to a muffle furnace for calcination, the calcination temperature was 600°C, the calcination time was 2 hours, and the calcination heating rate was 10°C / min; the calcined product obtained in the above steps was cooled to room temperature, and washed 3 times with deionized water to Remove organic impurities, then dry in an oven at 60°C for 12-24 hours, grind and pass through a 0.16mm sieve to obtain a sludge-based powder sample, which is the sludge-based catalyst;
[0034] Take three disperse blue 56 aqueous solutions of 200ml each, the initial concentration of disperse blue 56 is 400mg / L, add 0.8g / L sludge-based catalyst, 0.8g / L sludge-based catalyst+...
Embodiment 2
[0037]Preparation of sludge-based catalyst: After the sludge taken from the sludge dehydration workshop is naturally air-dried (the moisture content after air-drying is 7-10%), it is pulverized and sieved, and the particles with a particle size of 1-2 mm are selected, and the above-mentioned obtained The particles were transferred to a muffle furnace for calcination, the calcination temperature was 600°C, the calcination time was 2 hours, and the calcination heating rate was 10°C / min; the calcined product obtained in the above steps was cooled to room temperature, and washed several times with deionized water to Remove organic impurities, then dry in an oven at 60°C for 12-24 hours, grind and pass through a 0.16mm sieve to obtain a sludge-based powder sample, which is the sludge-based catalyst;
[0038] Add the sludge-based catalyst to the disperse blue 56 solution with an initial concentration of 400mg / L, and add permonosulfate, the dosage of peroxysulfate is 2.4g / L, and the d...
Embodiment 3
[0041] Preparation of sludge-based catalyst: After the sludge taken from the sludge dehydration workshop is naturally air-dried (the moisture content after air-drying is 7-10%), it is pulverized and sieved, and the particles with a particle size of 1-2 mm are selected, and the above-mentioned obtained The particles were transferred to a muffle furnace for calcination, the calcination temperature was 600°C, the calcination time was 2 hours, and the calcination heating rate was 10°C / min; the calcined product obtained in the above steps was cooled to room temperature, and washed several times with deionized water to Remove organic impurities, then dry in an oven at 60°C for 12-24 hours, grind and pass through a 0.16mm sieve to obtain a sludge-based powder sample, which is the sludge-based catalyst;
[0042] Get three parts of actual disperse dye wastewater (taken from Fujian Fengzhu Textile Technology Co., Ltd., pH value 4.2, total organic carbon (TOC) concentration 950mg / L, UV 4...
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