A fixed-point titration method for the determination of ammonium in anaerobic systems

2018 ◽  
Vol 10 (28) ◽  
pp. 3552-3556
Author(s):  
Zhe-Xuan Mu ◽  
Chuan-Shu He ◽  
Jian-Kai Jiang ◽  
Yang Mu
Keyword(s):  
Fixed Point ◽  
Ammonia Nitrogen ◽  
Titration Method ◽  
Methanogenic Activity ◽  
High Ammonia ◽  
Nitrogen Concentrations

High ammonia nitrogen concentrations inhibit methanogenic activity and induce digester upset or failure.

Adaptation of methanogenic sludge to high ammonia-nitrogen concentrations

1979 ◽  
Vol 13 (10) ◽  
pp. 995-999 ◽  
Author(s):  
A Van Velsen
Keyword(s):  
Ammonia Nitrogen ◽  
High Ammonia ◽  
Nitrogen Concentrations

scholarly journals The increase of process stability in removing ammonia nitrogen from wastewater

2018 ◽  
Vol 77 (9) ◽  
pp. 2213-2219
Author(s):  
Andrea Benáková ◽  
Iva Johanidesová ◽  
Petr Kelbich ◽  
Vojtěch Pospíšil ◽  
Jiří Wanner
Keyword(s):  
Dissolved Oxygen ◽  
Oxygen Concentration ◽  
Abrupt Change ◽  
Ammonia Nitrogen ◽  
Laboratory Model ◽  
Anammox Bacteria ◽  
Dissolved Oxygen Concentration ◽  
Volumetric Rate ◽  
High Ammonia ◽  
Nitrogen Concentrations

Abstract This work focuses on the removal of ammonia nitrogen pollution from wastewaters in a two-stage laboratory model based on a combination of the nitritation and anammox processes with the biomass immobilized in a polyvinyl alcohol (PVA) matrix. Owing to the immobilization approach inside the PVA pellets, the bacterial activity remained nearly unchanged on an abrupt change in the environmental conditions. The nitritation kinetics were significantly dependent on the dissolved oxygen concentration. The critical dissolved oxygen concentration at which the nitritation process using the immobilized bacterial culture stops is 0.6 mg/L. The volumetric rate of nitrogen removal by the anammox bacteria was 158 mg/(L·d). The technology presented is well-suited for removing high ammonia nitrogen concentrations (≥300 mg/L).

scholarly journals Application of the Anammox in China—A Review

2020 ◽  
Vol 17 (3) ◽  
pp. 1090 ◽  
Author(s):  
Ruolan Wen ◽  
Yue Jin ◽  
Wenjie Zhang
Keyword(s):  
Ammonia Oxidation ◽  
Wastewater Treatment Plants ◽  
Ammonia Nitrogen ◽  
Capital Costs ◽  
Greenhouse Gases Emissions ◽  
Anaerobic Ammonia Oxidation ◽  
High Ammonia ◽  
Nitrogen Concentrations ◽  
Anammox Process ◽  
Selection Of

Anaerobic ammonia oxidation (anammox) has been one of the most innovative discoveries for the treatment of wastewater with high ammonia nitrogen concentrations. The process has significant advantages for energy saving and sludge reduction, also capital costs and greenhouse gases emissions are reduced. Recently, the use of anammox has rapidly become mainstream in China. This study reviews the engineering applications of the anammox process in China, including various anammox-based technologies, selection of anammox reactors and attempts to apply them to different wastewater treatment plants. This review discusses the control and implementation of stable reactor operation and analyzes challenges facing mainstream anammox applications. Finally, a unique and novel perspective on the development and application of anammox in China is presented.

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