Effect of internal recycle on the nitrogen removal efficiency of an anaerobic/anoxic/oxic (A2/O) wastewater treatment plant (WWTP)
Process Biochemistry. 2004;39(11):1615-1624 
The Zeolite-Anammox Treatment Process for Nitrogen Removal from Wastewater—A Review
Water. 2017;9(11):901
Efficient Nitrogen Removal of Reject Water Generated from Anaerobic Digester Treating Sewage Sludge and Livestock Manure by Combining Anammox and Autotrophic Sulfur Denitrification Processes
Water. 2019;11(2):204
Stable and high-rate nitrogen removal from reject water by partial nitrification and subsequent anammox
Journal of Bioscience and Bioengineering. 2010;110(4):441-448
Oxidation-reduction potential (ORP) as a control parameter in a single-stage partial nitritation/anammox process treating reject water
Journal of Chemical Technology & Biotechnology. 2015;91(10):2582-2589
Effect of HRT and recycle ratio on removal of cyanide, phenol, thiocyanate and ammonia in an anaerobic–anoxic–aerobic continuous system
Process Biochemistry. 2006;41(1):96-105
Effects of Fe(II) and Fe(III) on the single-stage deammonification process treating high-strength reject water from sludge dewatering
Bioresource Technology. 2012;114:12-19
Microbial characteristics and nitrogen removal of simultaneous partial nitrification, anammox and denitrification (SNAD) process treating low C/N ratio sewage
Bioresource Technology. 2014;169:103-109
Improving nitrogen removal in an IFAS nitritation–anammox reactor treating lagoon supernatant by manipulating biocarrier filling ratio and hydraulic retention time
Biochemical Engineering Journal. 2019;152:107365
Effect of feed composition, aerobic volume fraction and recycle rate on nitrogen removal in the single-sludge system
Water Research. 1990;24(8):1041-1049