Experimental Study on Deep Chemical Phosphorus Removal Based on High Discharge Standard

4th International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Huang, Xiao^1 ; Dong, Wenyi^1^2 ; Wang, Hongjie^1^2 ; Sun, Feiyun^1^2 ; Jiang, Shilong^1

School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, Guangdong

518055, China^1

Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Shenzhen, Guangdong

518055, China^2

关键词: Chemical phosphorus removal;    Discharge standards;    Effect of chemicals;    Phosphorus removal;    Polyaluminium chloride;    Removal efficiencies;    Wastewater treatment plants;    Water eutrophication;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/237/2/022034/pdf
DOI  :  10.1088/1755-1315/237/2/022034

学科分类：环境科学（综合）

来源: IOP

【 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.