Antibiotic wastewater degradation method and device based on combined action of electrolysis and cavitation

Abstract

The invention discloses an antibiotic wastewater degradation method and device based on the combined action of electrolysis and cavitation. The method comprises the following steps: (1) wastewater homogenization treatment; (2) carrying out iron-carbon micro-electrolysis reaction, and carrying out catalytic pretreatment on the antibiotic wastewater; (3) carrying out hydraulic and ultrasonic cavitation degradation to degrade antibiotics; (4) cooling and precipitating; (5) post-treatment; the device comprises an iron-carbon micro-electrolysis reactor and a hydraulic and ultrasonic cavitator, wherein a water outlet of the iron-carbon micro-electrolysis reactor is connected with a wastewater inlet of the hydraulic and ultrasonic cavitator. According to the method, the antibiotic wastewater is degraded by utilizing a method of combining iron-carbon micro-electrolysis pretreatment and hydraulic power and ultrasonic cavitation; compared with a single method, a better degradation effect and higher degradation efficiency can be obtained, secondary pollution caused by adding chemicals is avoided, the whole degradation process of the antibiotic wastewater is simplified, the structure is simple, maintenance is convenient, the energy utilization rate is greatly increased, and industrialization is easy to achieve.

Description

technical field [0001] The invention relates to a degradation device for antibiotic wastewater, in particular to a device for degrading antibiotic wastewater by using the combined action of iron-carbon micro-electrolysis, hydraulic cavitation and ultrasonic cavitation, and belongs to the technical field of antibiotic wastewater degradation treatment. Background technique [0002] The development and application of antibiotics has gone through a long time, but their harm to the ecological environment did not attract social attention until the mid-1990s. Wastewater from pharmaceutical processes contains high levels of antibiotics, contributing to groundwater, surface water, sediment and soil contamination problems. Effective treatment of antibiotic-containing wastewater is a key issue to be solved in future wastewater treatment technologies. [0003] Antibiotic wastewater is difficult to treat, with complex components, poor biodegradability, and high concentration of organic ...

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Problems solved by technology

[0004] However, in practical applications, due to the complex composition of wastewater, the membrane treatment method is easy to cause clogging, resulting in low treatment efficiency of physical methods, and the physical method requires that the concentration of pollutants should not be too high, so it is not suitable for large-scale industrial treatment; traditional biological treatment When treating antibiotic wastewater with high organic load and complex composition, problems such as sludge bulking and unstable treatment effect often occur. At the same time, the biologically activated sludge method must first dilute the antibiotic wastewater by dozens or even hundreds of times. It can enter the activated sludge system, otherwise it is prone to sludge inactivation and has no treatment effect, and because the characteristics of antibiotics to inhibit the growth and reproduction of microorganisms will quickly deactivate the activated sludge and lose its degradation ability, so the biological activated sludge method is not suitable for direct treatment. Or used alone, only suitable as a follow-up supplementary treatment

[0005] The limitations of traditional water treatment technology cannot meet higher wastewater treatment requirements, and cavitation technology, as a new type of water treatment technology, provides a new solution for degrading organic pollutants in water, disinfecting and strengthening chemical processes

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