Colonization of Biological Activated Carbon in Drinking Water Purification

The colonization of columnar activated carbon was developed. Some analysis of several physical-chemical, biochemical and microbiological methods (indicators) used to characterize the BAC biofilm's composition and activity was provided. The filtration column filled with columnar activated carbon was operated incessantly for 72 days in the condition of natural colonization in a dynamic flow and poor nutritional status. The mature biofilm was observed after 53 days. By contrast, it was found that the columnar activated carbon showed a faster colonization speed and higher removal efficiency of NH
₃
-N, NO
₂
-N, UV
₂₅₄
, COD
_Mn
, DOC and AOC, which were 37.2%, 35.8%, 25.2%, 30.2%, 22.7% and 171, respectively.