Journal
WATER ENVIRONMENT RESEARCH
Volume 90, Issue 7, Pages 634-649Publisher
WILEY
DOI: 10.2175/106143017X15131012153112
Keywords
nitritation-anammox; mainstream; reactor configuration; NOB out-selection; COD/N ratio; pretreatment
Funding
- National Science Foundation [1358145]
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The nitritation-anammox process is an efficient and cost-effective approach for biological nitrogen removal, but its application in treating mainstream wastewater remains a great challenge. Mainstream nitritation-anammox processes could create opportunities for achieving energy self-sufficient, or energy-generating water resource recovery facilities. Significant advancements have been achieved via pilot- and full-scale trials to overcome the major obstacles under mainstream conditions, such as repression of nitrite-oxidizing bacteria, limiting the overgrowth of denitrifiers, and effective selection and retention of ammonia-oxidizing bacteria and anammox bacteria. This review paper intends to provide a detailed update of research progress on mainstream nitritation-anammox processes, discuss metabolic interactions, and examine major challenges and possible solutions towards the future development.
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