{"id":15090,"date":"2025-12-22T11:33:11","date_gmt":"2025-12-22T11:33:11","guid":{"rendered":"https:\/\/lequia-udg.com\/2025\/12\/22\/defensa-de-tesi-doctoral-development-of-an-integrated-cfd-and-biokinetic-model-of-a-full-scale-oxidation-ditch-a-case-study-of-la-almunia-wwtp-de-carla-vazquez\/"},"modified":"2025-12-22T10:39:49","modified_gmt":"2025-12-22T10:39:49","slug":"defensa-de-tesi-doctoral-development-of-an-integrated-cfd-and-biokinetic-model-of-a-full-scale-oxidation-ditch-a-case-study-of-la-almunia-wwtp-de-carla-vazquez","status":"publish","type":"post","link":"https:\/\/lequia-udg.com\/ca\/2025\/12\/22\/defensa-de-tesi-doctoral-development-of-an-integrated-cfd-and-biokinetic-model-of-a-full-scale-oxidation-ditch-a-case-study-of-la-almunia-wwtp-de-carla-vazquez\/","title":{"rendered":"Defensa de tesi doctoral “Development of an integrated CFD and biokinetic model of a full-scale oxidation ditch: a case study of La Almunia WWTP”, de Carla V\u00e1zquez"},"content":{"rendered":"\t\t
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\r\n\t\t\t\r\n\t\t\t\tData: 21-01-2026 \r\n\t\t\t\r\n\t\t\t<\/h4>\r\n\t\t

\r\n\t\t\t\r\n\t\t\t\tDefensa de tesi doctoral \"Development of an integrated CFD and biokinetic model of a full-scale oxidation ditch: a case study of La Almunia WWTP\" de Carla V\u00e1zquez \r\n\t\t\t\r\n\t\t\t<\/h2>\r\n\t\t<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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PhD_Carla_V\u00e1zquez_EN_CAT_ES<\/a><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Les estacions depuradores d\u2019aig\u00fces residuals urbanes (EDARs) afronten una pressi\u00f3 creixent en termes regulatoris i energ\u00e8tics. Els nous l\u00edmits europeus de nitrogen, f\u00f2sfor i microcontaminants exigeixen un rendiment de depuraci\u00f3 m\u00e9s elevat, alhora que es busca reduir el consum energ\u00e8tic. Aquestes demandes posen de manifest un repte persistent: tot i d\u00e8cades de modelitzaci\u00f3, moltes eines continuen representant els reactors com si fossin tancs perfectament barrejats. A escala real, per\u00f2, els reactors presenten patrons de circulaci\u00f3 complexos, gradients d\u2019oxigen i zones amb activitat biol\u00f2gica molt diferent. Sense entendre aquestes heterogene\u00eftats internes, \u00e9s dif\u00edcil optimitzar l\u2019operaci\u00f3 o reduir el consum d\u2019aeraci\u00f3 i mescla, que continuen sent les parts m\u00e9s intensives en energia del proc\u00e9s.<\/p>\n

La tesi de Carla V\u00e1zquez aborda aquesta necessitat mitjan\u00e7ant l\u2019aplicaci\u00f3 detallada de la Din\u00e0mica de Fluids Computacional <\/strong>(en angl\u00e8s, Computational Fluids Dynamics<\/em> o CFD) combinada amb els Models de Fangs Actius <\/strong>(Activated Sludge Models<\/em> o ASM) a escala real, mostrant com aquesta integraci\u00f3 pot revelar el comportament hidrodin\u00e0mic i biol\u00f2gic dels reactors en funcionament. El treball se centra en un canal d\u2019oxidaci\u00f3 a escala real a l\u2019EDAR de La Almunia (Saragossa). En la construcci\u00f3 del model es va posar especial atenci\u00f3 a aconseguir un equilibri entre la precisi\u00f3 (capturant els detalls geom\u00e8trics i operatius m\u00e9s rellevants) i el cost computacional, per tal de desenvolupar una eina pr\u00e0ctica aplicable a casos reals.<\/p>\n

El model hidrodin\u00e0mic validat va reproduir les principals caracter\u00edstiques del flux observades in situ, com ara les velocitats m\u00e9s elevades al canal exterior i la pres\u00e8ncia de zones de recirculaci\u00f3 i de baixa velocitat. Aquest coneixement es va utilitzar per avaluar diferents configuracions dels agitadors. Els resultats van mostrar que la pot\u00e8ncia total de mescla es podia reduir aproximadament un 30% sense superar els l\u00edmits habitualment acceptats per al volum de zones de baixa velocitat, fet que indica un potencial estalvi energ\u00e8tic sense comprometre l\u2019estabilitat del proc\u00e9s.<\/p>\n

En l\u2019\u00faltima part del treball, el model biocin\u00e8tic ASM2d es va integrar dins de l\u2019entorn CFD per simular l\u2019evoluci\u00f3 de l\u2019oxigen i dels principals contaminants al llarg del reactor. El model va revelar gradients espacials que els models convencionals no capturen, incloent-hi la coexist\u00e8ncia de zones aer\u00f2bies i an\u00f2xiques durant l\u2019aeraci\u00f3. L\u2019estudi tamb\u00e9 va avaluar la representativitat de la sonda d\u2019oxigen dissolt de la planta i va trobar que la ubicaci\u00f3 actual tendeix a sobreestimar lleugerament la concentraci\u00f3 mitjana d\u2019oxigen de la zona airejada. Es van detectar punts propers amb difer\u00e8ncies de fins a 1 mg\/L, una desviaci\u00f3 significativa que pot influir en el control del proc\u00e9s i que refor\u00e7a la import\u00e0ncia d\u2019escollir adequadament la posici\u00f3 de la sonda.<\/p>\n

En conjunt, la tesi demostra com la modelitzaci\u00f3 integrada CFD\u2013ASM2d a escala real pot millorar la comprensi\u00f3 del proc\u00e9s de tractament d\u2019aig\u00fces residuals<\/strong>, identificar limitacions de mescla i transfer\u00e8ncia, i donar suport a decisions operatives m\u00e9s eficients energ\u00e8ticament. Aquest treball s\u2019ha dut a terme com a doctorat industrial amb ACCIONA i el grup de recerca LEQUIA (Universitat de Girona)<\/strong>, en el marc del projecte HADES<\/a> (Herramienta de Apoyo a la Decisi\u00f3n para la optimizaci\u00f3n de la operaci\u00f3n de EDARs; refer\u00e8ncies CPP2021-009097, DI 068). La tesi ha estat dirigida pel Dr. Jes\u00fas Colprim<\/strong> (LEQUIA-UdG) i la Dra. Maria del Mar Mic\u00f3<\/strong> (ACCIONA).<\/p>\n

La defensa, que \u00e9s p\u00fablica, se celebrar\u00e0 el dimecres 21 de gener a les 10:30h, a la Facultat de Ci\u00e8ncies de la UdG<\/strong> (carrer M\u00aa Aur\u00e8lia Capmany 61, Campus Montilivi, 17003 Girona).<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Data: 21-01-2026 Defensa de tesi doctoral “Development of an integrated CFD and biokinetic model of a full-scale oxidation ditch: a case study of La Almunia WWTP” de Carla V\u00e1zquez PhD_Carla_V\u00e1zquez_EN_CAT_ES Les estacions depuradores d\u2019aig\u00fces residuals urbanes (EDARs) afronten una pressi\u00f3 creixent en termes regulatoris i energ\u00e8tics. Els nous l\u00edmits europeus de nitrogen, f\u00f2sfor i microcontaminants … Defensa de tesi doctoral “Development of an integrated CFD and biokinetic model of a full-scale oxidation ditch: a case study of La Almunia WWTP”, de Carla V\u00e1zquez<\/span>“>Continue reading Defensa de tesi doctoral “Development of an integrated CFD and biokinetic model of a full-scale oxidation ditch: a case study of La Almunia WWTP”, de Carla V\u00e1zquez<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":15089,"comment_status":"closed","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[69,70],"tags":[],"class_list":["post-15090","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-events-ca","category-noticies-ca"],"_links":{"self":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/15090","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/comments?post=15090"}],"version-history":[{"count":2,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/15090\/revisions"}],"predecessor-version":[{"id":15096,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/15090\/revisions\/15096"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/media\/15089"}],"wp:attachment":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/media?parent=15090"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/categories?post=15090"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/tags?post=15090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}