Electrocatalytic oxidation pretreatment method of semi-synthesis antibiotic wastewater

Abstract

The invention relates to an electrocatalytic oxidation pretreatment method of semi-synthesis antibiotic wastewater. The electrocatalytic oxidation pretreatment method comprises the following treatment steps of: (1) by using filler particles with the particle size of 20-25 meshes as electrodes, rinsing off by water, naturally airing, soaking for 24 hours by the wastewater to be treated, and changing water for 4-5 times during soaking till particles are saturated through adsorption; (2) taking the particle electrodes, airing and placing the particle electrodes in an electrocatalytic oxidation device, and setting the distance of the main electrode of an electrolytic cell at 70cm; and (3) adding the wastewater to be treated into the electrocatalytic oxidation device, adjusting the cell voltage of the electrolytic cell of the device to be 40-50V, and controlling the compressed air flow at 50-65L / h and the reaction time for 5-45 minutes. The electrocatalytic oxidation pretreatment method has the beneficial effects of being beneficial to the improvement of biodegradability of the semi-synthesis antibiotic wastewater and subsequent biological treatment, increasing the removal rate of pollutants and reducing the treatment cost.

Description

technical field [0001] The invention relates to wastewater pretreatment technology, in particular to an electrocatalytic oxidation pretreatment method for semi-synthetic antibiotic wastewater. Background technique [0002] Antibiotics are produced by certain microorganisms during the growth and reproduction process, and can resist the original organism or kill other microorganisms at low concentrations, and play an extremely important role in various aspects. Semi-synthetic antibiotics are developed on the basis of biosynthetic antibiotics. Through structural modification, they can increase stability, reduce toxic and side effects, expand antibacterial spectrum, reduce drug resistance, improve bioavailability, and improve the effect of drug treatment. Semi-synthetic antibiotic production wastewater mainly comes from high-concentration organic wastewater in fermentation and semi-synthetic production sections. Part of it is the waste mother liquor produced during the raw mater...

AI Technical Summary

Problems solved by technology

[0003] At present, the treatment methods of semi-synthetic antibiotic wastewater mainly include physical and chemical methods, biological methods and combined processes. The current treatment methods of enterprises mostly use combined processes, but the treatment effect is not ideal. The main problems are as follows: the treatment is difficult and the effluent is not up to standard , the variety of antibiotics is relatively single, and more biological processes are directly used; and for the treatment of multi-species synthetic and semi-synthetic antibiotic industrial wastewater, because the wastewater components are very complex, the biological toxicity of antibiotics is superimposed on each other, relying solely on biological treatment, the cost High, the treatment effect is unstable, and the effluent water quality is difficult to meet the discharge standard

At the same time, semi-synthetic antibiotic wastewater has a high concentration of pollutants and complex components. It not only contains high concentrations of organic matter such as organic solvents, but also contains a large amount of residual antibiotics. The biodegradability of wastewater is low, and the effect of conventional biological treatment is not ideal. Pretreatment is required.

However, the existing pretreatment method or treatment effect is not ideal, and the expected purpose cannot be achieved, or the treatment cost is high, and most enterprises are unacceptable, or need to add chemicals, which have toxic effects on organisms and subsequent biochemical treatment