Device and method for degrading antibiotic wastewater by utilizing low temperature plasma in coordination with bismuth molybdate catalyst

Abstract

The invention discloses a device and a method for treating antibiotic wastewater by utilizing low temperature plasma in coordination with a bismuth molybdate catalyst. The device for treating the antibiotic wastewater by utilizing the low temperature plasma in coordination with the bismuth molybdate catalyst comprises a barrel-shaped reactor, a breather pipe, a high voltage electrode, an alternating current high voltage power supply, an air pump and a stirrer, wherein the breather pipe is arranged inside the barrel-shaped reactor and is coaxial with the barrel-shaped reactor, the high voltage electrode is suspended inside the breather pipe, the lower port of the breather pipe is arranged at the lower bottom part inside the barrel-shaped reactor, the upper part of the breather pipe is arranged outside the barrel-shaped reactor, an air inlet is formed in the side wall of the upper part of the breather pipe, the air inlet is communicated with the outlet of the air pump by virtue of a pipeline; the alternating current high voltage power supply is respectively connected to the high voltage electrode and grounded, and the stirrer is arranged at the lower part of the barrel-shaped reactor. The device for treating the antibiotic wastewater by utilizing the low temperature plasma in coordination with the bismuth molybdate catalyst has the characteristics of simple design, low equipment investment and no secondary pollution and can be applied to the filed of treatment on antibiotic wastewater and organic wastewater difficult to be biochemically degraded, wherein a degradation reaction temperature can be increased by fully utilizing heat produced in a discharge process.

Description

technical field [0001] The invention belongs to the field of treatment of antibiotic waste water and refractory organic waste water, and in particular relates to a device for degrading antibiotic waste water by low-temperature plasma in cooperation with a bismuth molybdate catalyst and a method for treating waste water using the device. Background technique [0002] Since my country began to produce antibiotics in the early 1950s, the output has increased year by year, and it has now become one of the major antibiotic-producing countries in the world. In the production process of antibiotics in my country, most of them have many deficiencies such as low raw material utilization rate, low refining purity, and high residual antibiotic content in wastewater. As a result, production wastewater has complex components and is difficult to treat, causing serious pollution to the environment. [0003] At present, the treatment methods of antibiotic wastewater include: physicochem...

AI Technical Summary

Problems solved by technology

However, since antibiotic industrial wastewater is high-concentration organic wastewater, most processes require multiple dilutions of raw water during pretreatment, resulting in increased costs

[0006] Photocatalytic technology is currently considered to be a very promising low-energy processing technology, but due to the low photon quantum yield and the need for ultraviolet light conditions of the current catalysts, the application range is also narrow

[0007] The ozone oxidation method has a more obvious effect on the degradation of antibiotics, but the use of ozone will also cause certain pollution to the environment

[0008] Plasma technology can effectively treat refractory wastewater, but there are still some deficiencies in plasma technology, such as low efficiency, relatively high treatment cost, and the methods and means of degradation effect are not strong, etc.

[0009] It can be seen that there are certain deficiencies in the current treatment of antibiotic wastewater, so it is imminent to find a method that is efficient, simple, and avoids secondary pollution.

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