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3721865 
Journal Article 
Effective combination of permanganate composite chemicals (PPC) and biological aerated filter (BAF) to pre-treat polluted drinking water source 
Han, Mei; Zhao, Z; Gao, Wei; Tian, Yu; Cui, F 
2016 
Yes 
Desalination and Water Treatment
ISSN: 1944-3994
EISSN: 1944-3986 
57 
58 
28240-28249 
WOS:000388014600022 
A hybrid pre-treatment process was developed, which integrated permanganate composite chemicals (PPC) and biological aerated filters (BAF) together to enhance pollutants removal and guarantee drinking water safety. The hybrid pre-treatment process presented a high removal rate of dissolved organic matter (DOC), ammonium and nitrite, with average removal rates at 34.92, 86.10, and 97.70%, respectively. PPC changed the structure of organic matter making it more biodegradable, thus increasing the biologically removal efficiency of organic matter and greatly decreasing the disinfection byproducts formation potential. Introduction of PPC would increase the manganese concentration, but the following BAF could reduce the manganese concentration to a satisfactory level (below 0.05 mg/L). Scanning electronic microscopy and PCR-DGGE demonstrated that biodegradation should be the main mechanism for impurities removal. Jar tests results indicated that combination of the hybrid pre-treatment process and coagulation presented higher removal of impurities, with DOC removal at 55.14%. It could be concluded that PPC and BAF could enhance the pollutants removal. The hybrid pre-treatment strategy could benefit the subsequent process by significantly reducing the contaminant loading, and it would be of great significance to upgrade the conventional water treatment process. 
Potassium permanganate composite; Biological aerated filter; Hybrid pre-treatment process; Polluted source water; Conventional drinking water process