Title :
Characteristics of Polyaluminum Chloride (PAC) Coagulant Prepared by Baking Process
Author :
Zhao Chun-lu ; Wang Guan-yun ; Chu Yong-bao
Author_Institution :
Dept. of Environ. & Security Eng., QUST, Qingdao
Abstract :
One new technique was introduced preparing high-efficiency flocculant: polyaluminium chloride (PAC) with the materials of AlCl3-6H2O. Effect of preparing conditions on quality and separation of PAC was tested. The optimal preparing method was: baking temperature 290degC; baking time 30 min; maturation time 18 h; liquids laying aside time 12 h. The structure and form of PAC was studied by scanning electron microscope (SEM), and Al13 was detected by 27Al-NMR. And the flocculating efficiency of PAC was also preliminarily examined by jar test.
Keywords :
aluminium compounds; coagulation; crystal structure; flocculation; heat treatment; materials preparation; nuclear magnetic resonance; scanning electron microscopy; water treatment; 27Al-NMR; AlCl3-H2O; PAC structure; baking process; coagulant preparation; high-efficiency flocculant; jar test; polyaluminum chloride; scanning electron microscope; temperature 290 C; time 12 h; time 18 h; time 30 min; water treatment; Aluminum oxide; Costs; Polymers; Scanning electron microscopy; Security; Solid state circuits; Temperature distribution; Testing; Wastewater treatment; Wavelength measurement;
Conference_Titel :
Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008. The 2nd International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1747-6
Electronic_ISBN :
978-1-4244-1748-3
DOI :
10.1109/ICBBE.2008.398
