含磷废水的处理及排放评价

doi:10.3866/PKU.DXHX202309097

Abstract

Abstract: This study presents an improvement to the analytical chemistry experiment “Determination of total phosphorus in water and wastewater by spectrophotometry”. Maifannite, a green and non-toxic material, was modified with ZnFe-LDHs (layered double hydroxides) to create an adsorption material. The modified Maifannite was characterized using FTIR (Fourier Transform Infrared Spectroscopy), XRD (X-ray Diffraction), SEM (Scanning Electron Microscope), and EDS-mapping (Energy Dispersive X-ray Spectroscopy Mapping). Optimal adsorption conditions for total phosphorus by ZnFe-LDHs modified Maifannite were explored, achieving a removal rate of over 98.4%. After treatment with modified Maifannite, the concentration of phosphorus in wastewater was reduced to less than 0.08 mg·L⁻¹, meeting the first-level discharge standard for phosphorus. This enhanced experiment is rich in content, comprehensive, and cultivates students’ research and teamwork abilities while practicing the concept of “green chemistry”. It is suitable for extension to higher-grade undergraduate teaching.

Key words: Modified maifannite, Adsorption, Phosphorus content determination, Environment-friendly, Innovative design and improvement

Jing Wang, Pingping Li, Yuehui Wang, Yifan Xiu, Bingqian Zhang, Shuwen Wang, Hongtao Gao. Treatment and Discharge Evaluation of Phosphorus-Containing Wastewater[J].University Chemistry, 2024, 39(5): 52-62.

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Treatment and Discharge Evaluation of Phosphorus-Containing Wastewater

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