Method and apparatus for wastewater treatment capable of biologically removing nitrogen and phosphorus simultaneously using circulation of two-sludge process and nitrate-nitrogen equivalent liquid

摘要

The first settling tank (1)-the anaerobic tank (2)-the anoxic tank (3)-the aerobic tank (4)-the second settling tank (5)-the nitrification tank (6)-the third settling tank It is possible to separate the phosphorus removal and denitrification process from the nitrification process, thereby providing the optimum growth environment for the microorganisms involved in the respective processes, thereby maximizing the removal of phosphorus and nitrogen simultaneously have.