Synergistic treatment device for degradation-resistant organic waste water and method thereof

Abstract

The invention discloses a synergistic treatment device for degradation-resistant organic waste water and a method thereof, and belongs to the field of waste water treatment. The synergistic treatment device comprises a primary microwave waste water treatment unit and a secondary ultrasonic wave and electrocatalytic oxidation synergistic waste water treatment unit. In the microwave waste water treatment unit, primary waste water treatment is realized through physical and chemical reactions between microwaves and pollutants, the waste water obtained after microwave treatment enters the ultrasonic wave and electrocatalytic oxidation synergistic waste water treatment unit, on the premise that the waste water quality is improved by microwaves and conditions suitable for secondary treatment are created, secondary treatment on the waste water pollutants is achieved by means of strong-oxidizing free radicals synergistically generated by ultrasonic waves and electrocatalytic oxidation, and continuity of secondary treatment and high efficiency of electric energy utilization are ensured through an electrode surface layer clearing function of the ultrasonic waves. Secondary pollution is avoided in the whole waste water treatment process.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a refractory organic waste water collaborative treatment device and a method thereof. Background technique [0002] The rapid and in-depth development of modern industry has led to the discharge of more and more refractory organic wastewater containing "three causes" (teratogenic, carcinogenic, mutagenic) pollutants, which poses a severe test to the traditional wastewater treatment and disposal process. In many cases, due to the adaptability of traditional processes, it is difficult to obtain better treatment effects; on the other hand, with the continuous improvement of environmental governance requirements, the tightening of national environmental protection policies, and the gradual tightening of wastewater treatment standards, leading to the pollution discharge enterprises to High-efficiency wastewater treatment processes express a strong appeal. Therefore, t...

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Problems solved by technology

[0015] The above-mentioned patents simply combine them with microwave technology and ultrasonic technology on the basis of diamond film electrodes, and their applicability is relatively limited.

On the other hand, although the above-mentioned microwave wastewater treatment technology, ultrasonic wastewater treatment technology, and electrocatalytic oxidation wastewater treatment technology based on boron-doped diamond film electrodes have their own unique advantages, there are still some shortcomings in the actual separate wastewater treatment process. Points: ①The microwave wastewater treatment process will lead to an increase in the temperature of the water body, and an appropriate temperature increase will help improve the wastewater treatment effect, but too high a temperature will lead to a decrease in the utilization rate of electric energy, and the degradation of wastewater by microwaves is not based on hydroxyl radicals The advanced oxidation of advanced oxidation, as a single technology application, the treatment cycle is relatively long

②Ultrasonic waves act alone on refractory organic wastewater, which also has unsatisfactory treatment effects and energy consumption problems caused by long-term treatment

③ The electrocatalytic oxidation wastewater treatment technology based on boron-doped diamond film electrodes can be used to treat refractory organic wastewater within a large COD concentration span, but it needs to consider the area of ​​the plate (the cost per unit area of ​​boron-doped diamond film electrodes still relatively high) and the consumption cost of electric energy

In addition, although the boron-doped diamond membrane electrode is a material with low adsorption performance, there are still some dirt on the surface during the actual application process, which affects the effect of the plate and the utilization efficiency of the current. Manual cleaning is of great significance. A certain degree of difficulty in operation (removal of the plate and maintenance of the thin layer and the diamond film on the surface of the boron-doped diamond film electrode)

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