[{"command":"settings","settings":{"pluralDelimiter":"\u0003","suppressDeprecationErrors":true,"user":{"uid":0,"permissionsHash":"d9587e6f410d2e7f476e3da6cb10a457c78ab82347f962bf83d9020620f901dd"}},"merge":true},{"command":"add_css","data":[{"rel":"stylesheet","media":"all","href":"\/modules\/contrib\/addtocal\/addtocal.css?t2408i"},{"rel":"stylesheet","media":"all","href":"\/themes\/custom\/cest2025\/css\/components\/node.css?t2408i"}]},{"command":"add_js","selector":"body","data":[{"src":"\/core\/assets\/vendor\/jquery\/jquery.min.js?v=3.7.1"},{"src":"\/core\/assets\/vendor\/once\/once.min.js?v=1.0.1"},{"src":"\/core\/misc\/drupalSettingsLoader.js?v=10.5.1"},{"src":"\/core\/misc\/drupal.js?v=10.5.1"},{"src":"\/core\/misc\/drupal.init.js?v=10.5.1"},{"src":"\/modules\/contrib\/addtocal\/addtocal.js?v=10.5.1"},{"src":"\/modules\/contrib\/addtocal\/addtocal-download.js?v=10.5.1"}]},{"command":"openDialog","selector":"#drupal-modal","settings":null,"data":"\n\u003Carticle class=\u0022node node--type-presentation node--promoted node--view-mode-modal\u0022\u003E\n  \n      \u003Cb\u003E\u003Cspan\u003EBalancing Oxygen and Microbial Activity: The Role of Aeration in Enhancing Deammonification Efficiency\u003C\/span\u003E\n\u003C\/b\u003E\n  \n      \u003Cdiv\u003E\u003Cb\u003ECEST ID: cest2025_00076\u003C\/b\u003E\u003C\/div\u003E\n  \n        \u003Cdiv class=\u0022mb-3\u0022\u003E\n      \u003Cb\u003ERoom  | Sat 6 Sep 2025 | 17:00 - 18:00 pm\u003C\/b\u003E\n    \u003C\/div\u003E\n  \n          \n    \n  \n      \u003Cdiv class=\u0022mt-10\u0022\u003E\n            \u003Cdiv class=\u0022clearfix text-formatted field field--name-presentation-body field--type-text-long field--label-hidden field__item\u0022\u003EThe deammonification process is an energy-efficient solution for nitrogen removal in wastewater treatment, relying on the synergy between ammonia-oxidizing bacteria (AOB) and anammox bacteria while suppressing nitrite-oxidizing bacteria (NOB). This study aimed to enhance the process by identifying aeration strategies that suppress NOB while maintaining anammox bacteria\u0027s high activity. \nThe research was carried out across four experimental series. These series varied in aeration strategies, including continuous and intermittent aeration, with different R ratios and dissolved oxygen (DO) concentrations. Following the implementation of these aeration strategies in the reactor, batch tests, and next-generation sequencing were conducted.\nThe results demonstrated that switching from continuous aeration to intermittent aeration (R=1\/2, DO= 1.5 mg O\u2082\/L) significantly suppressed NOB activity from 17.6 mg N\/gVSS\u00b7h to 8.2 mg N\/gVSS\u00b7h. Simultaneously, these conditions maintained high anammox activity (52.1 mg N\/gVSS\u00b7h), highlighting the process\u0027s robustness under low oxygen concentrations. Increasing DO concentration to 2.5 mg O\u2082\/L caused an increase in AOB (57,8 mg N\/gVSS\u00b7h) and anammox (65,2 mg N\/gVSS\u00b7h) activity together with a decrease in NOB activity (5,9 mg N\/gVSS\u00b7h). However, further decreases in the duration of aerated phases (R=1) led to a decline in anammox activity. Under continuous aeration, Nitrospira abundance was the highest, correlating with elevated NOB activity. The highest abundance of Nitrosomonas was observed with the intermittent aeration strategy (R = 1\/2,  DO = 2.5 mg O\u2082\/L), aligning with higher AOB activity. Interestingly, the abundance of anammox bacteria (Candidatus Brocadia) remained comparable across all experimental stages, despite notable differences in their activity levels.\nThis discrepancy suggests that microbial abundance alone may not fully reflect metabolic activity, emphasizing the importance of combining NGS with batch tests for a comprehensive evaluation of microbial processes. These findings also highlight the critical role of aeration strategy and DO control in balancing microbial communities and optimizing deammonification performance. \n\u003C\/div\u003E\n      \u003C\/div\u003E\n  \n  \u003Cdiv class=\u0022mt-5 mb-5\u0022\u003E\n          \u003Cspan\u003E\n          \u003Cb\u003EPresenter:\u003C\/b\u003E\n                      \u003Cp\u003E\n            Weronika Borowska\n            \u003C\/p\u003E\n                  \u003C\/span\u003E\n      \u003C\/div\u003E\n\n  \u003Cdiv class=\u0022mb-5\u0022\u003E\n          \u003Cdiv class=\u0022field__label\u0022\u003E\n        Authors\n      \u003C\/div\u003E\n              \u003Cp\u003E\n          Weronika Borowska\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          Martyna Godzieba\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          S\u0142awomir Ciesielski\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          Monika \u017bubrowska-Sudo\u0142\n        \u003C\/p\u003E\n            \u003C\/div\u003E\n\n\u003C\/article\u003E\n","dialogOptions":{"width":"700","position":{"my":"right top","at":"right top"},"closeOnEscape":true,"dialogClass":"presentation-dialog","modal":true,"title":"","classes":{"ui-dialog":"presentation-dialog"}}}]