Enhanced Bio-P removal: Past, present, and future – A comprehensive review

Article

Diaz, Ruby, Mackey, Brendan, Chadalavada, Sreeni, kainthola, Jyoti, Heck, Phil and Goel, Ramesh. 2022. "Enhanced Bio-P removal: Past, present, and future – A comprehensive review." Chemosphere. 309 (Part 2), pp. 1-20. https://doi.org/10.1016/j.chemosphere.2022.136518
Article Title

Enhanced Bio-P removal: Past, present, and future – A comprehensive review

ERA Journal ID35098
Article CategoryArticle
AuthorsDiaz, Ruby (Author), Mackey, Brendan (Author), Chadalavada, Sreeni (Author), kainthola, Jyoti (Author), Heck, Phil (Author) and Goel, Ramesh (Author)
Journal TitleChemosphere
Journal Citation309 (Part 2), pp. 1-20
Article Number136518
Number of Pages20
Year2022
PublisherElsevier
Place of PublicationUnited Kingdom
ISSN0045-6535
1465-9972
1879-1298
Digital Object Identifier (DOI)https://doi.org/10.1016/j.chemosphere.2022.136518
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0045653522030119
Abstract

Excess amounts of phosphorus (P) and nitrogen (N) from anthropogenic activities such as population growth, municipal and industrial wastewater discharges, agriculture fertilization and storm water runoffs, have affected surface water chemistry, resulting in episodes of eutrophication. Enhanced biological phosphorus removal (EBPR) based treatment processes are an economical and environmentally friendly solution to address the present environmental impacts caused by excess P present in municipal discharges. EBPR practices have been researched and operated for more than five decades worldwide, with promising results in decreasing orthophosphate to acceptable levels. The advent of molecular tools targeting bacterial genomic deoxyribonucleic acid (DNA) has also helped us reveal the identity of potential polyphosphate-accumulating organisms (PAO) and denitrifying PAO (DPAO) responsible for the success of EBPR. Integration of process engineering and environmental microbiology has provided much-needed confidence to the wastewater community for the successful implementation of EBPR practices around the globe. Despite these successes, the process of EBPR continues to evolve in terms of its microbiology and application in light of other biological processes such as anaerobic ammonia oxidation and on-site carbon capture. This review provides an overview of the history of EBPR, discusses different operational parameters critical for the successful operation of EBPR systems, reviews current knowledge of EBPR microbiology, the influence of PAO/DPAO on the disintegration of microbial communities, stoichiometry, EBPR clades, current practices, and upcoming potential innovations.

KeywordsPAO; DPAO; EBPR microbiology; Stoichiometry; Clades
ANZSRC Field of Research 2020410404. Environmental management
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Byline AffiliationsUniversity of Utah, United States
School of Engineering
Mahindra University, India
Central Valley Water Reclamation Facility, United States
Institution of OriginUniversity of Southern Queensland
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