Method for treating antibiotics in water by using pre-magnetized zero-valent iron/chelating agent system
An antibiotic and pre-magnetization technology, applied in special compound water treatment, oxidized water/sewage treatment, water/sewage treatment, etc., can solve the problems of low reaction rate, reduced reaction activity and pollutant removal rate, etc., to achieve efficient degradation, Effects of Simplifying In-Situ Magnetized Water Treatment Process and Promoting Water Resources Reuse
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Embodiment 1
[0030] 1) Dry-state magnetization of micron-sized iron powder (50 μm) in a magnetic field with a magnetic field strength of 300 mT provided by an electromagnet for 3 min.
[0031] 2) Prepare 500 mL of SMT solution with a concentration of 5 mg / L with deionized water, and adjust the pH of the solution to 5.
[0032] 3) Add the pre-magnetized iron powder pre-Fe obtained in 1) sequentially 0 0.2g / L, chelating agent EDTA 2mM are in the SMT solution that the pH that configures in step 2) is 5.
[0033] 4) The solution obtained in 3) was placed on a mechanical stirrer at a speed of 350 r / min and stirred for reaction in an air environment.
Embodiment 2
[0035] 1) Put micron-sized iron powder (20μm) in 20ml of aqueous solution, magnetize it in a wet state for 5min in a magnetic field with a magnetic field strength of 150mT provided by an electromagnet, and remove the aqueous solution.
[0036] 2) Prepare 500 mL of SMT solution with a concentration of 5 mg / L with deionized water, and adjust the pH of the solution to 6.
[0037] 3) Add the pre-magnetized iron powder pre-Fe obtained in 1) sequentially 0 0.3g / L, chelating agent EDTA 3mM are in the SMT solution that the pH that configures in step 2) is 6.
[0038] 4) The solution obtained in 3) was placed on a mechanical stirrer in an air environment at a speed of 200 r / min and stirred for reaction.
[0039] Compared with pre-magnetized Fe 0 / Chelating agent system, unmagnetized Fe 0 / Chelating agent system and the treatment effect of each single system under the same conditions.
[0040] like figure 1 Shown (the iron powder in embodiment 1 is analyzed), before reaction, unm...
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