Method for reinforcing adsorption-biodegradation (AB) denitrification technology by use of heterotrophic nitrification-aerobic denitrification bacteria

The invention discloses a method for reinforcing an adsorption-biodegradation (AB) denitrification technology by use of heterotrophic nitrification-aerobic denitrification bacteria and belongs to the technical field of water treatment. The method comprises the following specific steps: when the COD (chemical oxygen demand)/N of sewage is more than 8, the sewage passes through a section A and a section B in turn, feeding the effluent of the section A into the section B and inoculating heterotrophic nitrification-aerobic denitrification bacteria into the activated sludge of the section B; and when the COD/N of the sewage is no more than 8, feeding the sewage into the section A and the section B respectively, independently operating the section A and the section B and inoculating the heterotrophic nitrification-aerobic denitrification bacteria into the activated sludge of the section A and the activated sludge of the section B. By adopting the method, the functions of carbon removal and denitrification are reali