2026-04-13T04:04:39Zhttps://recercat.cat/oai/request

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

00925njm 22002777a 4500 dc Zhang, Congcong author Guisasola, Albert author Baeza, Juan Antonio author 2022 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. Configurations Enhanced biological phosphorus removal (EBPR) Mainstream Phosphorus recovery Precipitation A review on the integration of mainstream P-recovery strategies with enhanced biological phosphorus removal