Method for degrading antibiotics in water through cooperation of plasma and sulfite and ferric iron salt
A sulfite, ferric salt technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of high cost, limitation, low energy utilization rate, unfavorable environment, etc. Low cost of treatment, significant economy, wide range of effects
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Embodiment 1
[0041] 1) Add sulfite and ferric salt to 200mL deionized water containing 50mg / L norfloxacin to obtain wastewater to be treated containing sulfite and ferric salt, wherein the concentration of sulfite is 2.5mmol / L, the concentration of ferric salt is 7.0mg / L;
[0042] 2) Use an air pump to pass through the micropores on the quartz glass tube at the front end of the low-temperature plasma discharge device, and continuously feed oxygen into the solution obtained in step 1) according to a set flow rate of 3L / min to obtain a uniformly mixed aerobic solution; The plasma discharge device is an underwater plasma discharge device;
[0043] 3) While using an air pump to continuously feed oxygen, use a low-temperature plasma discharge device to discharge the aerobic solution obtained in step 2) for 50 minutes to carry out a synergistic catalytic oxidation reaction, and then stand at room temperature for 5 hours to complete the antibiotic-containing treatment. Treatment of waste water ...
Embodiment 2
[0054] 1) Add sulfite and ferric salt to 200mL deionized water containing 5mg / L norfloxacin to obtain wastewater to be treated containing sulfite and ferric salt, wherein the concentration of sulfite is 0.5mmol / L, the concentration of ferric salt is 0.5mg / L;
[0055] 2) Utilize an air pump to pass through the micropores on the quartz glass tube at the front end of the low-temperature plasma discharge device, and continuously feed air into the solution obtained in step 1) according to a set flow rate of 1L / min, to obtain a uniformly mixed aerobic solution; The plasma discharge device is a jet plasma discharge device;
[0056] 3) While using the air pump to continuously feed the air, use a low-temperature plasma discharge device to discharge the aerobic solution obtained in step 2) for 30 minutes to carry out a synergistic catalytic oxidation reaction, and then let it stand at room temperature for 8 hours to complete the antibiotic-containing treatment. Treatment of waste wate...
Embodiment 3
[0058] 1) Add sulfite and ferric salt to 200mL deionized water containing 40mg / L norfloxacin to obtain wastewater to be treated containing sulfite and ferric salt, wherein the concentration of sulfite is 3mmol / L, the concentration of ferric salt is 10.0mg / L;
[0059] 2) Use an air pump to continuously feed oxygen-containing gas (a mixture of oxygen and helium) into the solution obtained in step 1) at a set flow rate of 2 L / min to obtain a uniformly mixed aerobic solution;
[0060] 3) While using an air pump to continuously feed oxygen-containing gas, use a low-temperature plasma discharge device to discharge the aerobic solution obtained in step 2) for 60 minutes to carry out a synergistic catalytic oxidation reaction, and then stand at room temperature for 12 hours to complete the aerobic solution containing Degradation of antibiotic wastewater to be treated; the low-temperature plasma discharge device is a creeping dielectric barrier discharge device.
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