To solve the problems,including instability of nitrification in winter, carbonshortage for denitrification and difficulties in making the total nitrogen (TN) meet thedischarging stANDHrd, which exist commonly in most of the municipal wastewaterplants in south cities of China, we developed an enhanced nitrogen removal processcharacterized by carbon source regulation with biological adsorption and sludgehydrolysis (ANDH). A pilot-scale ANDH system was built in Chengbei municipalwastewater plant, Wu Xi city. F...