Ammonia-containing wastewater treatment method

The invention provides an ammonia-containing wastewater treatment method which comprises the following content: nitrification sludge and aerobic denitrification sludge are added into a bioreactor with a built-in membrane separation assembly; the nitrification sludge undergoes nitration in an area outside the membrane separation assembly; the aerobic denitrification sludge undergoes nitrogen removal by denitrification inside the membrane separation assembly; wastewater inside and outside the membrane separation assembly is communicated; and the side wall of the membrane separation assembly adopts a separation membrane and the bottom of the membrane separation assembly doesn't adopt the separation membrane. By the use of the membrane separation assembly, the nitrification sludge and the aerobic denitrification sludge in the reactor are separated from each other. Thus, sludge plays its role in a respective independent space, not interfering with each other. Blending and intercommunication of wastewater composition are realized. In addition, different dissolved oxygen environments can be provided, and synchronous nitrification and denitrification efficiency is raised.