Biological Nitrogen Removal Database

A manually curated data resource for microbial nitrogen removal


Experimental setup

Influent:Activated sludge

Anammox system:Simultaneous nitrification and denitrification (SND)

Anammox reactor:Lab-scale CASS reactor


Culture taken from:Activated sludge

Microorganism cultured:Aeromonas sp. HN-02


Electron donor:Ammonium sulfate

Electron acceptor:Oxygen, Sodium nitrite, Potassium nitrate


Experimental Information

Ammonia removal rate:8.10 mg L-1 h-1

Nitrate removal rate:nan

Ammonia Removal efficiency (%):0.9595

Nitrate Removal efficiency (%):nan

Total Nitrogen Removal (%):0.807

Carbon Source:Succinate

Final products:Nitrogen, Nitrous oxide, Nitrite, Nitric oxide

Information about Article

Major findings:The results showed that HN-02 demonstrated strong acid- and alkali-resistance.

Authors:Chen et al., 2014

Title:Impact resistance of different factors on ammonia removal by heterotrophic nitrification-aerobic denitrification bacterium Aeromonas sp. HN-02

Pubmed link:Link

Full research link:Link

Abstract:To give reference for the application of heterotrophic nitrification-aerobic denitrification bacteria in actual wastewater treatment, the impact resistance of extreme pH, low temperature, heavy metals and high salinity on ammonia removal by a typical heterotrophic nitrifying-aerobic denitrifying bacterium Aeromonas sp. HN-02 was investigated. The results showed that HN-02 demonstrated strong acid- and alkali-resistance. In addition, it remained active at 5°C, and the removal rates of ammonia and COD were 0.90 mg L(-1)h(-1) and 22.34 mg L(-1)h(-1), respectively. Under the same extent of immediate temperature drop, the temperature correction coefficients of ammonia, COD removal rates and cell growth rate were close. Moreover, HN-02 could survive in the solution containing 0.5 mg L(-1) Cu(2+) or 8 mg L(-1) Zn(2+), or 0.5 mg L(-1) of equivalent Cu(2+)-Zn(2+). Furthermore, efficient ammonia removal was retained at salinity below 20 g L(-1), thus it could be identified as a halotolerant bacterium. At last, stronger stress resulted in higher ?COD/?TN ratio.