Multimedia treatment system for oligodynamically removing antibiotics from wastewater, and method thereof

Abstract

The invention discloses a multimedia treatment system for oligodynamically removing antibiotics from wastewater, and a method thereof. The system comprises a waste water pretreatment unit (1), a multimedia soil layer system treatment unit (2), a wetland gradient treatment unit (3), an oligodynamic photocatalytic treatment unit (4), a full-time light supply unit (5) and a wind / solar hybrid oligodynamic unit (6); the waste water pretreatment unit is sequentially connected with the multimedia soil layer system treatment unit, the wetland gradient treatment unit and the oligodynamic photocatalytic treatment unit; and the wind / solar hybrid oligodynamic unit is respectively connected with the multimedia soil layer system treatment unit, the oligodynamic photocatalytic treatment unit and the full-time light supply unit. The multimedia soil layer system is innovatively adopted, and the compositions and the particle sizes of the water distribution layer, the water flowing layer and the soil hybrid module layer of different-grade multimedia soil subsystems are optimized, so the adsorption and degradation ability of the system to antibiotic pollutants is improved.

Description

technical field [0001] The invention belongs to the technical field of ecological treatment of antibiotics in waste water, and in particular relates to a multi-media treatment system and method for microdynamically removing antibiotics in waste water. Background technique [0002] Antibiotics are organic substances produced by organisms (microorganisms, plants and animals) during their life activities, or obtained by other methods, that can selectively inhibit or affect other biological functions at low concentrations. Antibiotics have the function of inhibiting the growth of bacteria, preventing and controlling diseases by inhibiting cell wall, protein and nucleic acid synthesis and other mechanisms of action. Therefore, since the 20th century, antibiotics have been widely used in industries such as medical treatment, livestock and poultry, and aquaculture. However, the use or even abuse of antibiotics will increase the content of antibiotic resistance genes (ARGs) in the ...

AI Technical Summary

Problems solved by technology

Constructed wetland technology has the characteristics of large area, low efficiency, and low ability to resist high pollution loads; while biological treatment has many unit operations, and there are many types and large quantities of chemicals added, which greatly increases the conductance of the water body and increases the Operating costs Long treatment cycle, poor continuity of the treatment process and other defects; for advanced oxidation technology, a large amount of sedimentation sludge will be generated, which requires additional treatment, which increases the treatment cost and the high cost of chemical addition, which limits its project scale to a certain extent application

In the past technologies, few people have used the advantages of high anti-pollution load of multi-media soil layer system, small footprint, and no chemical addition to remove antibiotics in wastewater, and there are few studies on the use of natural sunlight and simulated sunlight. To improve the treatment efficiency of antibiotics by carrying out photocatalytic oxidation at certain times, there is an urgent need for an ecological treatment method that can reduce the use of chemicals and energy consumption, operating costs, high treatment efficiency, no secondary pollutants, and ecology to solve the existing antibiotic wastewater Pollution problems, with broad social needs

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