Method for enhancing domestication of anaerobic ammonia oxidation biological membrane by utilizing nano zero-valent iron

The invention discloses a method for strengthening domestication of an anaerobic ammonia oxidation biological membrane by utilizing nanoscale zero-valent iron, which comprises the following steps: inoculating sludge into an anaerobic biological membrane reactor, adding 15-25mg/L nanoscale zero-valent iron particles in an intermittent adding manner, pumping nitrogen-containing wastewater, and introducing nitrogen to ensure an anaerobic environment and hydraulic retention for a period of time, and rapid domestication and stable operation of the anaerobic ammonia oxidation biological membrane are realized. On one hand, the acclimation period of the anaerobic ammonium oxidation biological membrane is remarkably shortened by utilizing the promotion effect of the nano zero-valent iron on the growth of anaerobic ammonium oxidation microorganisms; on the other hand, through the Fe < 2 + > and Fe < 3 + > mediated microbial process, deep removal of ammonia nitrogen and nitrate nitrogen is enhanced, the operation stabil