Denitrification-dephosphorization biological reaction tank system of sewage

摘要

[Abstract] Disclosed is anaerobic tank, anoxic tank, in the A2O biological reaction tank configuration worked divided three tank aerobic tank, when the ammonium nitrogen concentration increased, and the nitrification capacity is reduced, and to deal with it I could not. This A2O to eliminate the drawbacks of biological reaction tank device method, to improve the working efficiency of the stabilization of quality of treated water and operation management. In the biological reaction tank unit of A A2O method, The anoxic tank, is provided an air introducing tube with a flow meter and the air control valve to serve the anoxic tank as anaerobic-aerobic tank by the aeration. Flowmeter Pitot tube type differential pressure flow meter, air adjusting valve is a globe valve.