2026-04-13T07:02:04Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4628822026-03-21T04:05:51Zcom_2072_98col_2072_378192

A review on the integration of mainstream P-recovery strategies with enhanced biological phosphorus removal Zhang, Congcong Guisasola, Albert Baeza, Juan Antonio Configurations Enhanced biological phosphorus removal (EBPR) Mainstream Phosphorus recovery Precipitation Altres ajuts: acords transformatius de la UAB Phosphorus (P), an essential nutrient for all organisms, urgently needs to be recovered due to the increasing demand and scarcity of this natural resource. Recovering P from wastewater is a feasible and promising way widely studied nowadays due to the need to remove P in wastewater treatment plants (WWTPs). When enhanced biological P removal (EBPR) is implemented, an innovative option is to recover P from the supernatant streams obtained in the mainstream water line, and then combine it with liquor-crystallisation recovery processes, being the final recovered product struvite, vivianite or hydroxyapatite. The basic idea of these mainstream P-recovery strategies is to take advantage of the ability of polyphosphate accumulating organisms (PAO) to increase P concentration under anaerobic conditions when some carbon source is available. This work shows the mainstream P-recovery technologies reported so far, both in continuous and sequenced batch reactors (SBR) based configurations. The amount of extraction, as a key parameter to balance the recovery efficiency and the maintenance of the EBPR of the system, should be the first design criterion. The maximum value of P-recovery efficiency for long-term operation with an adequate extraction ratio would be around 60%. Other relevant factors (e.g. COD/P ratio of the influent, need for an additional carbon source) and operational parameters (e.g. aeration, SRT, HRT) are also reported and discussed. 2022 Article Agencia Estatal de Investigación CTQ2017-82404-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1175 Water research ; Vol. 212 (April 2022), art. 118102 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. https://creativecommons.org/licenses/by-nc-nd/4.0/