OGO process has been formed as a modification of OCO process through test research. As a advanced technology, it has the functions of phosphorus removal and denitrification with facilitation,effectiveness and economy. OGO technology has already been approved as Utility Model Patent(ZL2005 2 0010545.7)and Invention Patent(ZL2007 1 0092501.7). According to the characteristic of OGO system, the dissertation carried out test and analysis on screening, nitrogen removal characteristics of aerobic denitrif...