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.

公开(公告)号：US12091342B2

公开(公告)日：2024-09-17

申请号：US17603230

申请日：2020-09-30

Applicant: NANJING UNIVERSITY

Inventor： Lin Ye ,  Haohao Sun ,  Xuxiang Zhang ,  Kailong Huang ,  Hongqiang Ren

IPC: C02F3/20 ,  C02F1/00 ,  C02F3/12 ,  C02F101/30

CPC classification number: C02F3/20 ,  C02F1/006 ,  C02F3/1205 ,  C02F2001/007 ,  C02F2101/30

Abstract: The present disclosure discloses a method and device for removing Organic Micropollutants (OMPs) in water, and belongs to the technical field of wastewater treatment. The method includes the following steps: S1: aerating residual sludge under a starvation condition to enrich starved-state microorganisms; and S2: treating wastewater containing OMPs under an aeration condition with sludge containing the starved-state microorganisms obtained in step S1, and periodically updating the sludge containing the starved-state microorganisms. According to the present disclosure, aerobic starvation treatment is performed on the sludge to gradually reduce the abundance of microorganisms that may use degradable organic matters only and enrich microorganisms that may use complex organic matters in the sludge, and the enriched sludge may degrade various OMPs and be used to remove OMPs in wastewater. The process is easy to operate and low in cost and has relatively high practical application value.