Elimination of Pollutants and Emerging Contaminants from Hog Wastewater Treatment Plants
This study aims to explore effective methods for removing pollutants from swine wastewater.Due to the presence of a large amount of refractory pollutants in swine wastewater,the treatment effect of existing treatment plants is not satisfactory.To address this issue,a multi-stage wastewater treatment system is proposed in this study.However,this system still has limitations in removing nitrogen and phosphorus.To overcome this,the system incorporates the use of oxidation ditches and multi-functional material filtration techniques to treat nitrified wastewater,thereby achieving effective removal of nitrogen and phosphorus.The results showed that the removal rate of most antibiotic compounds exceeded 90%,but a few compounds remained in the final wastewater and were not completely removed.Weather conditions were also found to have an impact on the removal efficiency of antibiotics.Specifically,the removal effect in autumn was generally better than that in spring,but the overall trend of antibiotic removal efficiency under different weather conditions remained consistent.In conclusion,the multi-stage wastewater treatment system proposed in this study has achieved certain success in the treatment of swine wastewater,but further optimization and improvement are still needed.Future research will focus on developing more efficient and environmentally friendly wastewater treatment technologies to minimize the potential risks of swine wastewater to the environment and human health.
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