Experimental Study on Deep Chemical Phosphorus Removal Based on High Discharge Standard. Issue 2 (February 2019)

• Record Type: Journal Article
• Authors: Huang, Xiao; Dong, Wenyi; Wang, Hongjie; Sun, Feiyun; Jiang, Shilong
• Is Part Of: IOP conference series. Volume 237:Issue 2(2019)
• Publication Date: 2019-02
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/237/2/022034
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: 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 ·6H2 O 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 ·6H2 O, 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 ·6H2 O adding.