Wastewater treatment method
A treatment method and technology for wastewater, which are applied in the fields of oxidized water/sewage treatment, magnetic field/electric field water/sewage treatment, etc., which can solve the problems of poor wastewater treatment effect, troublesome catalyst replacement, unstable treatment effect, etc.
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Embodiment 1
[0032] This embodiment is used to illustrate the wastewater treatment method provided by the present invention.
[0033] The waste water treated in this embodiment is high-concentration waste water from an oil refinery.
[0034] With sulfuric acid aqueous solution (mass percentage concentration is 98%) the pH value of above-mentioned waste water to be treated is adjusted to 6, described waste water and oxidant hydrogen peroxide (mass percentage concentration is 30%) (hydrogen peroxide consumption is 400mg / L) is equipped with The bottom of the magnetically stable reactor of ferric oxide particles (particle diameter is 120 microns) is continuously introduced (the loading of ferric oxide particles in the reactor is 65% of the reactor volume, and the residence time of waste water is 20 minutes), Feed current into the coil wound on the periphery of the reactor, so that the magnetic field strength of the applied electromagnetic field is 300 Oersted, so that the ferric oxide particle...
Embodiment 2
[0042] This embodiment is used to illustrate the wastewater treatment method provided by the present invention.
[0043] The wastewater treated in this embodiment is wastewater from a chemical plant.
[0044] The preparation method of the catalyst particle with magnetism adopted in the present embodiment is as follows: 70% by weight of iron powder (powder diameter is 2-10 micron), 25% by weight of copper oxide (powder diameter is 2-10 micron) and 5 wt% % titanium dioxide (with a powder diameter of 2-10 microns) is mixed uniformly and then sintered at 500° C. for 2 hours to obtain catalyst particles with a particle diameter of 150 microns.
[0045] With sulfuric acid aqueous solution (mass percentage concentration is 98%) the pH value of above-mentioned waste water to be treated is adjusted to 6, described waste water and oxidant hydrogen peroxide (mass percentage concentration is 30%) (hydrogen peroxide consumption is 400mg / L) from described The bottom of the magnetically sta...
Embodiment 3
[0053] This embodiment is used to illustrate the wastewater treatment method provided by the present invention.
[0054] Waste water was treated according to the method of Example 1, the difference was that the magnetic field strength of the applied electromagnetic field was 800 Oersted; the COD value of the waste water after treatment was 98 mg / L, the BOD value was 33 mg / L, and the B / C was 0.34.
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