Microorganism plays an important role in wastewater treatment. Accounted for by its high levels of reliability and reproducibility as well as its convenience in operation,the denaturing gradient gel electrophoresis （DGGE）has been widely used for cultivation and identification of microbial communities in the fields of environmental sciences with focus on pollution control. The principle of the DGGE technique and the concerned key factors in its application for analysis of microbial communities were described in this paper. In comparison,the potential application ...
