Firstly it summarized, analyzed and evaluated the techniques and methods of processing the polluted water at home and abroad, and then focuses on the analysis of the feasibility of biological contact oxidation. With the polluted water in Shaoshan village, Shaoshan city as an example, the test explores the function and operation mode of biological contact oxidation, Through the variance analysis of input and output water, The results shows that the water purifying affection differ from time and season. Gener...