Nitrate removal with lateral flow sulphur autotrophic denitrification reactor

2014 ◽  
Vol 35 (21) ◽  
pp. 2692-2697 ◽  
Author(s):  
Xiaomei Lv ◽  
Mingfei Shao ◽  
Ji Li ◽  
Chuanbo Xie
Keyword(s):  
Nitrate Removal ◽  
Lateral Flow ◽  
Autotrophic Denitrification ◽  
Denitrification Reactor

Optimization of C/N and current density in a heterotrophic/biofilm-electrode autotrophic denitrification reactor (HAD-BER)

2014 ◽  
Vol 171 ◽  
pp. 389-395 ◽  
Author(s):  
Shuang Tong ◽  
Nan Chen ◽  
Heng Wang ◽  
Hengyuan Liu ◽  
Chen Tao ◽  
...  
Keyword(s):  
Current Density ◽  
Autotrophic Denitrification ◽  
Denitrification Reactor

Application of photocatalysis as a post treatment method of a heterotrophic–autotrophic denitrification reactor effluent

Chemosphere ◽  
2008 ◽  
Vol 72 (11) ◽  
pp. 1706-1711 ◽  
Author(s):  
Luigi Rizzo ◽  
Claudio Della Rocca ◽  
Vincenzo Belgiorno ◽  
Miray Bekbolet
Keyword(s):  
Treatment Method ◽  
Post Treatment ◽  
Autotrophic Denitrification ◽  
Denitrification Reactor

scholarly journals Denitrification-Potential Evaluation and Nitrate-Removal-Pathway Analysis of Aerobic Denitrifier Strain Marinobacter hydrocarbonoclasticus RAD-2

Water ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1298 ◽  
Author(s):  
Dedong Kong ◽  
Wenbing Li ◽  
Yale Deng ◽  
Yunjie Ruan ◽  
Guangsuo Chen ◽  
...  
Keyword(s):  
Nitrate Removal ◽  
Aerobic Denitrification ◽  
Transcriptional Level ◽  
16S Rrna Sequence ◽  
Recirculating Aquaculture ◽  
N Removal ◽  
Denitrification Reactor ◽  
Potential Alternative ◽  
Marinobacter Hydrocarbonoclasticus

An aerobic denitrifier was isolated from a long-term poly (3-hydroxybutyrate-co-3-hydroxyvalerate) PHBV-supported denitrification reactor that operated under alternate aerobic/anoxic conditions. The strain was identified as Marinobacter hydrocarbonoclasticus RAD-2 based on 16S rRNA-sequence phylogenetic analysis. Morphology was observed by scanning electron microscopy (SEM), and phylogenetic characteristics were analyzed with the API 20NE test. Strain RAD-2 showed efficient aerobic denitrification ability when using NO3−-N or NO2−-N as its only nitrogen source, while heterotrophic nitrification was not detected. The average NO3−-N and NO2−-N removal rates were 6.47 mg/(L·h)and 6.32 mg/(L·h), respectively. Single-factor experiments indicated that a 5:10 C/N ratio, 25–40 °C temperature, and 100–150 rpm rotation speed were the optimal conditions for aerobic denitrification. Furthermore, the denitrifying gene napA had the highest expression on a transcriptional level, followed by the denitrifying genes nirS and nosZ. The norB gene was found to have significantly low expression during the experiment. Overall, great aerobic denitrification ability makes the RAD-2 strain a potential alternative in enhancing nitrate management for marine recirculating aquaculture system (RAS) practices.

Coupled Sulfur and Iron(II) Carbonate-Driven Autotrophic Denitrification for Significantly Enhanced Nitrate Removal

2018 ◽  
Vol 53 (3) ◽  
pp. 1545-1554 ◽  
Author(s):  
Ting-ting Zhu ◽  
Hao-yi Cheng ◽  
Li-hui Yang ◽  
Shi-gang Su ◽  
Hong-cheng Wang ◽  
...  
Keyword(s):  
Nitrate Removal ◽  
Autotrophic Denitrification

Nitrate removal and microbial analysis by combined micro-electrolysis and autotrophic denitrification

2016 ◽  
Vol 211 ◽  
pp. 240-247 ◽  
Author(s):  
Wei Xing ◽  
Desheng Li ◽  
Jinlong Li ◽  
Qianyi Hu ◽  
Shihai Deng
Keyword(s):  
Nitrate Removal ◽  
Autotrophic Denitrification ◽  
Microbial Analysis

Industrial flue gas desulfurization waste may offer an opportunity to facilitate SANI® application for significant sludge minimization in freshwater wastewater treatment

2013 ◽  
Vol 67 (12) ◽  
pp. 2822-2826 ◽  
Author(s):  
J. Qian ◽  
F. Jiang ◽  
H. K. Chui ◽  
Mark C. M. van Loosdrecht ◽  
G. H. Chen
Keyword(s):  
Wastewater Treatment ◽  
Flue Gas ◽  
Industrial Effluent ◽  
Flue Gas Desulfurization ◽  
Synthetic Wastewater ◽  
Autotrophic Denitrification ◽  
Carbon And Nitrogen ◽  
Sludge Minimization ◽  
Denitrification Reactor ◽  
Set Up

This paper reports an exploratory study on the use of a sulfite-rich industrial effluent to enable the integration of a sulfite–sulfide–sulfate cycle to the conventional carbon and nitrogen cycles in wastewater treatment to achieve sludge minimization through the non-sludge-producing Sulfate reduction, Autotrophic denitrification and Nitrification Integrated (SANI) process. A laboratory-scale sulfite reduction reactor was set up for treating sulfite-rich synthetic wastewater simulating the wastewater from industrial flue gas desulfurization (FGD) units. The results indicated that the sulfite reduction reactor can be started up within 11 d, which was much faster than that using sulfate. Thiosulfate was found to be the major sulfite reduction intermediate, accounting for about 30% of the total reduced sulfur in the reactor effluent, which may enable additional footprint reduction of the autotrophic denitrification reactor in the SANI process. This study indicated that it was possible to make use of the FGD effluent for applying the FGD–SANI process in treating freshwater-based sewage.

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