Method for treating semi-coke wastewater through pre-oxidation deoiling and dephenolizing-electro-Fenton technology
A semi-coke wastewater and technology treatment technology, applied in the direction of oxidation water/sewage treatment, chemical instruments and methods, special compound water treatment, etc., can solve the problem of reducing the dosage of electric Fenton hydrogen peroxide, easily coking and clogging devices, and poor treatment efficiency and other problems, to achieve the effect of reducing coking phenomenon, enhancing the effect and improving the utilization rate of oxygen
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Embodiment 1
[0042] According to a pre-oxidation of oil, dehydrool-electro-electrical fenton, treatment of laon carbon wastewater, and treatment target is a blue carbon waste water in Shaanxi, water 4000mg / L, and treatment steps are:
[0043] S100: Investment mass fraction in wastewater is 90% of iron powder, and the amount of investment is 2000mg / L, constant temperature is 30 ° C, and air is used as a pre-oxidation gas source, and the large pore is aerated for 4 h;
[0044] S200: Adjusting the S100 effluent 20% sulfuric acid to 2.5, and sedate 12h;
[0045] S300: S200 outlet into the electropper unit, the anode and the cathode, the graphite electrode is used, and the current density is 10 mA / cm. 2 , The iron powder vinper is added to 3000 mg / L, and the mass fraction is 30% of the hydrogen-affected volume ratio of 1%, and the reaction is 0.5h;
[0046] S400: The reaction ends the calcium oxide to adjust the pH to 8, add PAC and PAM condensation, precipitate 12 h, and complete the pretr...
Embodiment 2
[0049] According to a pre-oxidation of the present invention, the fentolization of oil and depinol-electro-fenton is treated with orchid wastewater. Treatment target is a blue carbon waste water in Shaanxi, and the water COD is 30,000 ~ 40000mg / L. Volatile phenol is 2000 ~ 6000mg / L The petroleum is 50 ~ 500mg / L, the animal and vegetable oil is 400 ~ 3000mg / L, the processing steps are:
[0050] S100: The mass fraction of the wastewater is 95% of the iron powder, the amount of investment is 6000 mg / L, the constant temperature is 45 ° C, and the air is used as a pre-oxidation gas source, and the large pore is exposed to 14h;
[0051] S200: Adjusting the S100 effluent by 40% sulfuric acid to 3.75, and sedate 18 h;
[0052] S300: S200 outlet into the electropper unit, the anode and the cathode, the graphite electrode is used, and the current density is 30 mA / cm. 2 The iron powder vinper is added to 9000 mg / L, and the mass fraction is 30% of the hydrogen-affected volume ra...
Embodiment 3
[0056] According to a pre-oxidation of oil, dehydrool-electro-electrical fenton, treatment of laon carbon wastewater, and treatment target is a blue carbon waste water in Shaanxi, water 4000mg / L, and treatment steps are:
[0057] S100: The mass fraction of the wastewater is 99% of the iron powder, the amount of investment is 10,000 mg / L, the constant temperature is 60 ° C, and the air is used as a pre-oxidation gas source, and the large pore aeration is oxidized 24h;
[0058] S200: Adjusting the S100 effluent 60% sulfuric acid to 5, and sedate 24 h;
[0059] S300: S200 outlet into the electropper unit, the anode and the cathode are made of graphite electrode, and the current density is 50mA / cm. 2 The iron powder vapor is added to 15000 mg / L, and the mass fraction is 30% of the hydrogen-affected volume ratio of 3%, and the reaction is 2h;
[0060] S400: The end of the reaction was added to the calcium oxide to adjust the pH to 10, and PAC and PAM were mixed, precipitated fo...
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