公开(公告)号：US11746029B2

公开(公告)日：2023-09-05

申请号：US16972441

申请日：2019-11-09

Applicant: NANJING UNIVERSITY

Inventor： Xuxiang Zhang ,  Depeng Wang ,  Yang He ,  Kailong Huang ,  Lin Ye ,  Bing Wu ,  Hongqiang Ren

IPC: C02F3/28 ,  C02F3/30 ,  C02F3/34 ,  C02F101/16

CPC classification number: C02F3/28 ,  C02F3/307 ,  C02F3/305 ,  C02F3/341 ,  C02F2101/16

Abstract: The present invention discloses a method for starting a single-stage system for nitrogen removal coupling partial denitrification and anammox. The two nitrogen removal processes are coupled by gradually enriching denitrifying bacteria in anammox granular sludge and then activating the partial denitrification process of the functional bacteria (denitrifying bacteria). Particularly, the method comprises: inoculating anammox granular sludge in a single-stage reactor, adding an organic carbon source in gradients to enrich denitrifying bacteria and to adapt anammox bacteria, and replacing nitrites in feed with nitrates gradually to activate the partial denitrification process.