Affiliation:
1. Institute of Architectural Engineering, Zaozhuang University, Zaozhuang Key Laboratory of Urban-Rural Water Environment Pollution Control and Ecological Restoration , Zaozhuang , Shandong, 277100 , China
2. Institute of Mathematics and Statistics, Zaozhuang University , Zaozhuang , Shandong, 277100 , China
Abstract
Abstract
Iron–carbon microelectrolysis was employed to remove phosphorus in this study. The efficiency, mechanism, influence factors, and feasibility of actual wastewater were investigated. The results showed that iron–carbon microelectrolysis had an excellent phosphorus removal ability. When the initial concentration of
PO
4
3
−
{\text{PO}}_{4}^{3-}
–P was 19.44 mg·L−1, after 120 min reaction time, the remaining
PO
4
3
−
{\text{PO}}_{4}^{3-}
–P in wastewater was 4.65 mg·L−1, and the removal rate was 76.05%. The precipitate formed in the reaction was mainly ferric phosphate (FePO4), which had a high recovery value. There was a linear correlation between initial phosphorus concentrations and phosphorus removal velocity. As to actual wastewater, 88.37 ± 0.44%, 89.78 ± 1.88%, and 94.23 ± 0.16% phosphorus removal rates were achieved in the influent of municipal wastewater treatment plant, effluent of secondary sedimentation tank, and actual high salinity wastewater, respectively, after 120 min reaction time. This study provides a new method for phosphorus removal and recovery from wastewater.
Subject
Health, Toxicology and Mutagenesis,Industrial and Manufacturing Engineering,Fuel Technology,Renewable Energy, Sustainability and the Environment,General Chemical Engineering,Environmental Chemistry