Achievement, performance and characteristics of microbial products in a partial nitrification sequencing batch reactor as a pretreatment for anaerobic ammonium oxidation

ABSTRACT The physiology of anaerobic ammonium oxidizing (anammox) aggregates grown in a sequencing batch reactor was investigated quantitatively. The physiological pH and temperature ranges were 6.7 to 8.3 and 20 to 43°C, respectively. The affinity constants for the substrates ammonium and nitrite were each less than 0.1 mg of nitrogen per liter. The anammox process was completely inhibited by nitrite concentrations higher than 0.1 g of nitrogen per liter. Addition of trace amounts of either of the anammox intermediates (1.4 mg of nitrogen per liter of hydrazine or 0.7 mg of nitrogen per liter of hydroxylamine) restored activity completely.

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Long-term formation of microbial products in a sequencing batch reactor

Water Research ◽

10.1016/j.watres.2010.04.035 ◽

2010 ◽

Vol 44 (13) ◽

pp. 3787-3796 ◽

Cited By ~ 30

Author(s):

Bing-Jie Ni ◽

Bruce E. Rittmann ◽

Fang Fang ◽

Juan Xu ◽

Han-Qing Yu

Keyword(s):

Sequencing Batch Reactor ◽

Batch Reactor ◽

Microbial Products

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Effect of cadmium on the performance of partial nitrification using sequencing batch reactor

Chemosphere ◽

10.1016/j.chemosphere.2019.02.006 ◽

2019 ◽

Vol 222 ◽

pp. 913-922 ◽

Cited By ~ 11

Author(s):

Liqiu Zhang ◽

Jingjing Fan ◽

Hang N. Nguyen ◽

Shugeng Li ◽

Debora F. Rodrigues

Keyword(s):

Sequencing Batch Reactor ◽

Batch Reactor ◽

Partial Nitrification

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The symbiosis of anaerobic ammonium oxidation bacteria and heterotrophic denitrification bacteria in a size-fractioned single-stage partial nitrification/anammox reactor

Biochemical Engineering Journal ◽

10.1016/j.bej.2019.107353 ◽

2019 ◽

Vol 151 ◽

pp. 107353 ◽

Cited By ~ 8

Author(s):

Bolin Li ◽

Yue Wang ◽

Jiangtao Li ◽

Lie Yang ◽

Xiang Li ◽

...

Keyword(s):

Single Stage ◽

Anaerobic Ammonium Oxidation ◽

Partial Nitrification ◽

Ammonium Oxidation ◽

Heterotrophic Denitrification

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Effect of continuously dosing Cu(II) on pollutant removal and soluble microbial products in a sequencing batch reactor

Water Science & Technology ◽

10.2166/wst.2015.385 ◽

2015 ◽

Vol 72 (9) ◽

pp. 1653-1661 ◽

Cited By ~ 1

Author(s):

YangWei Yan ◽

YuWen Wang ◽

Yan Liu ◽

Xiang Liu ◽

ChenChao Yao ◽

...

Keyword(s):

Removal Efficiency ◽

Extracellular Polymeric Substances ◽

Sequencing Batch Reactor ◽

Batch Reactor ◽

Pollutant Removal ◽

Cod Removal ◽

Synthetic Wastewater ◽

Soluble Microbial Products ◽

Cod Removal Efficiency ◽

Microbial Products

The effects of synthetic wastewater that contained 20 mg/L Cu(II) on the removal of organic pollutants in a sequencing batch reactor were investigated. Results of continuous 20 mg/L Cu(II) exposure for 120 days demonstrated that the chemical oxygen demand (COD) removal efficiency decreased to 42% initially, followed by a subsequent gradual recovery, which peaked at 78% by day 97. Effluent volatile fatty acid (VFA) concentration contributed 67 to 89% of the influent COD in the experimental reactor, which indicated that the degradation of the organic substances ceased at the VFA production step. Meanwhile, the varieties of soluble microbial products (SMP) content and main components (protein, polysaccharide, and DNA) were discussed to reveal the response of activated sludge to the toxicity of 20 mg/L Cu(II). The determination of Cu(II) concentrations in extracellular polymeric substances (EPS) and SMP throughout the experiment indicated an inverse relationship between extracellular Cu(II) concentration and COD removal efficiency.

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