Process and device for circulating multi-dimensional catalyzing advanced oxidation treatment of oily wastewater

Abstract

The invention relates to the field of wastewater treatment, in particular to a process and device for circulating multi-dimensional catalyzing advanced oxidation treatment of oily wastewater, and particularly discloses a process for treating the oily wastewater. The process comprises the following steps that the oily wastewater is treated through ultrasonic waves and an oxidizing agent, and most of degradation-resistant micromolecules and easily- degradable long-chain and endless chain macromolecule matter in the wastewater are removed; treatment time ranges from 5 min to 10 min; the treated oily wastewater is treated through ultraviolet light and ozone, and part of easily degradable organic matter and a small part of degradation-resistant micromolecules in the oily wastewater are removed; treatment time ranges from 6 min to 8 min; the treated oily wastewater is treated through ultraviolet light, ozone and a catalyst, and a large amount of organic matter is degraded; treatment time ranges from 9 min to 12 min. The device for circulating treatment of the oily wastewater is further provided. Three advanced oxidation processes are combined, the micromolecule matter influencing hydroxyl radical in the oily wastewater is oxidized and removed, a large amount of hydroxyl radical is generated, and high-concentration organic matter can be thoroughly oxidized.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to a process and device for circulating multi-dimensional catalytic advanced oxidation treatment of oily waste water, especially suitable for the treatment of high-concentration oily industrial waste water. Background technique [0002] In recent years, the advanced oxidative degradation of organic matter in wastewater has become a hot spot in industry research. Advanced oxidation technology is a method to generate a large number of strong oxidizing hydroxyl radicals (OH), that is, to use highly active free radicals to react with pollutants in water, and to react under high temperature and high pressure, electricity, sound, light irradiation, catalysts and other reaction conditions. The macromolecular refractory organic matter is oxidized into low-toxic and non-toxic small molecular substances, so as to realize the modification of pollutants in water, so that some of them change...

AI Technical Summary

Problems solved by technology

[0005] Compared with the traditional Fenton method, the electro-Fenton method has certain advantages, but it needs to sacrifice the anode electrode, the electrode consumables must be replaced frequently, and the performance decays quickly; the multi-micro electrocatalytic treatment capacity is low, and the treatment capacity for oily wastewater is poor. large scale investment

[0006] The service life of plasma discharge treatment is short, and the treatment effect is unstable; although the treatment cost of the single photocatalytic oxidation method is low, the degradation effect on small molecules such as methanol and acetic acid contained in water is about 30%, which cannot be used It is completely oxidized, which is difficult to meet the actual needs of enterprises

[0007] The above-mentioned advanced oxidation process is greatly affected by the types of impurities in water and the nature of pollutants. The PH condition of raw water and excessive metal ions in water will directly affect the treatment effect and purification effect.

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