期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：237
期号：2
页码：022034
DOI：10.1088/1755-1315/237/2/022034
出版社：IOP Publishing
摘要：For controlling water eutrophication and decreasing total phosphorus (TP) in effluent of wastewater treatment plants, chemical phosphorus removal was studied. Results showed that the optimal FeCl3 6H2O and polyaluminium chloride (PAC) dosage were 20 and 10 mg L−1, respectively, and the reaction time was 15 minutes. Under this condition, the TP concentration was 0.24 and 0.23 mg L−1, respectively. No matter adding PAC or FeCl3 6H2O, their suspended (SS) and residual metal salts were 2 and 0.15 mg L−1. The effect of chemical phosphorus removal process on the concentration of COD and NO3−-N showed that the removal efficiency of COD was 45.5% and NO3−-N was only 3.1% when PAC was phosphorus removal agent. However, the efficiency of COD was 34.8% with FeCl3 6H2O adding.
