Study on the effect of different microalgae treatment technologies enhanced by gibberellin on antibiotic removal from swine wastewater
The study aimed to investigate the removal efficiency of antibiotics from the simulated swine wastewater by four microalgae treatment systems enhanced with gibberellin(GAs):Chlorella vulgaris monoculture,Chlorella vulgaris+Clonostachys rosea,Chlorella vulgaris+Ganoderma lucidum,Chlorella vulgaris+Pleurotus pulmonarius.Different concentrations of GAs were added to analyze the daily production,specific growth rate,and chlorophyll a content changes in microalgae within these systems,as well as to monitor the removal rates of tetracycline(TC),oxytetracycline(OTC),sulfamethazine(SMZ),sulfamethoxazole(SMX),and sulfamethizole(SMM)from the simulated swine wastewater.The optimal GAs concentration and superior microalgae treatment technology were identified.The results indicated:1)the best treatment effect was achieved when the initial mass concentration of GAs was 50 mg/L for all four microalgae treatment systems.2)The treatment system of Chlorella vulgaris+Clonostachys rosea outperformed the other three treatment systems,with average antibiotic removal rate reaching 94.41％±2.79％(TC),90.31％±5.24％(OTC),59.15％±5.48％(SMZ),61.54％±5.82％(SMX),and 54.97％±4.38％(SMM)on the 7th day.This treatment technology was more effective in reducing tetracycline-class antibiotic than sulfonamide-class antibiotic.3)In terms of purification time,the best effect was observed on the 7th day.The findings could provide a reference for the study and application of algae-fungus treatment technology for the removal of antibiotic.
万方数据
维普
