{"id":12490,"date":"2014-01-01T16:51:25","date_gmt":"2014-01-01T16:51:25","guid":{"rendered":"https:\/\/lequia-udg.com\/2014\/01\/01\/effects-of-operational-conditions-on-the-performance-of-a-partial-nitritation-sbr-treating-high-nitrogen-loads\/"},"modified":"2024-05-29T15:17:39","modified_gmt":"2024-05-29T15:17:39","slug":"effects-of-operational-conditions-on-the-performance-of-a-partial-nitritation-sbr-treating-high-nitrogen-loads","status":"publish","type":"post","link":"https:\/\/lequia-udg.com\/ca\/2014\/01\/01\/effects-of-operational-conditions-on-the-performance-of-a-partial-nitritation-sbr-treating-high-nitrogen-loads\/","title":{"rendered":"Effects of operational conditions on the performance of a partial nitritation SBR treating high nitrogen loads"},"content":{"rendered":"\t\t
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\r\n\t\t\t\r\n\t\t\t\tAuthor: Jordi Gabarr\u00f3 Bartual \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\tEffects of operational conditions on the performance of a partial nitritation SBR treating high nitrogen loads\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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El tractament biol\u00f2gic d\u2019aig\u00fces residuals industrials que contenen altes concentracions de nitrogen (>1000 mg N L-1) i baixa concentraci\u00f3 de mat\u00e8ria org\u00e0nica biodegradable (bCOD) com s\u00f3n els lixiviats d\u2019abocador \u00e9s a dia d\u2019avui un repte. El tractament convencional mitjan\u00e7ant nitrificaci\u00f3-desnitrificaci\u00f3 d\u2019aquest tipus d\u2019aig\u00fces\u00a0residuals industrials implica costos molt elevats degut a l\u2019aeraci\u00f3 i la necessitat de l\u2019adici\u00f3 de bCOD externa. El proc\u00e9s de nitritaci\u00f3 parcial (PN) combinat amb la oxidaci\u00f3 anaer\u00f2bia d\u2019amoni (anammox) resulta una alternativa m\u00e9s sostenible pel tractament biol\u00f2gic d\u2019aquest tipus d\u2019aig\u00fces. PN \u00e9s el proc\u00e9s previ necessari per alimentar el posterior reactor anammox. L\u2019objectiu del reactor de PN \u00e9s el de produir un efluent apte pel reactor anammox. La investigaci\u00f3 presentada en aquesta tesi suposa canvis operacionals en el reactor PN com s\u00f3n la duraci\u00f3 de les fases aer\u00f2bies i la baixada de la temperatura\u00a0operacional en un reactor discontinu seq\u00fcencial (SBR) de PN tractant lixiviat d\u2019abocador madur per reduir els requeriments energ\u00e8tics. La posada en marxa i operaci\u00f3 del PN-SBR es va dur a terme en condicions completament aer\u00f2bies a 25 i 35o<\/sup>C i tamb\u00e9 incloent alimentacions an\u00f2xiques per promoure la desnitrificaci\u00f3 heterotr\u00f2fica via NO2\u00a0<\/sub>–\u00a0a 35o\u00a0<\/sup>C. Especial atenci\u00f3 va ser posada en la qualitat de l\u2019efluent, la selecci\u00f3 dels microorganismes usant t\u00e8cniques moleculars i, per \u00faltim, la producci\u00f3 de N2O en condicions an\u00f2xiques i aer\u00f2bies.\u00a0L\u2019efluent del PN-SBR era adequat en tots els casos estudiats en termes de proporci\u00f3 molar NO2\u00a0-:NH4+ i contingut en BCOD tot i el canvi de la temperatura operacional (25 i 35o<\/sup>C) i la inclusi\u00f3 d\u2019alimentacions en condicions an\u00f2xiques. En relaci\u00f3 amb la producci\u00f3 de N2O del PN-SBR, es va demostrar que la producci\u00f3 i posterior emissi\u00f3 de N2O va ser de 3.6% del nitrogen total de l\u2019afluent. La selecci\u00f3 microbiol\u00f2gica obtinguda en el PN-SBR va ser avaluada mitjan\u00e7ant diferents t\u00e8cniques moleculars. En tots els experiments un filotip de bacteris oxidadors d\u2019amoniva ser enriquit i estava ben adaptat a les condicions severes del PN-SBR. La comunitat heterotr\u00f2fica era poc\u00a0diversa per\u00f2 estava molt ben adaptada a les condicions del reactor. En definitiva, els resultats d\u2019aquesta tesi demostren que es va aconseguir exitosament el funcionament robust del PN-SBR tot i els canvis de temperatura i la inclusi\u00f3 de fases an\u00f2xiques. L\u2019aplicaci\u00f3 dels canvis realitzats en reactors d\u2019escala real hauria de ser analitzada en termes de requeriments del reactor anammox posterior i la llei ambiental vigent (en el cas de l\u2019N2O). Els resultats inclosos a la tesi tamb\u00e9 demostren l\u2019aclimataci\u00f3 dels microorganismes seleccionats en condicions severes i variables.<\/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

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tInformaci\u00f3 addicional<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t
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Autor:<\/strong><\/td>\nJordi Gabarr\u00f3 Bartual<\/td>\n<\/tr>\n
Supervisor:<\/strong><\/td>\nDr Jes\u00fas Colprim, Dr Maril\u00f3s Balaguer and Dr Ma\u00ebl Ruscalleda<\/td>\n<\/tr>\n
Any:<\/strong><\/td>\n2014<\/td>\n<\/tr>\n
Enllaç:<\/strong><\/td>\nhttp:\/\/hdl.handle.net\/10803\/283970<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Author: Jordi Gabarr\u00f3 Bartual Effects of operational conditions on the performance of a partial nitritation SBR treating high nitrogen loads El tractament biol\u00f2gic d\u2019aig\u00fces residuals industrials que contenen altes concentracions de nitrogen (>1000 mg N L-1) i baixa concentraci\u00f3 de mat\u00e8ria org\u00e0nica biodegradable (bCOD) com s\u00f3n els lixiviats d\u2019abocador \u00e9s a dia d\u2019avui un repte. … Effects of operational conditions on the performance of a partial nitritation SBR treating high nitrogen loads<\/span>“>Continue reading Effects of operational conditions on the performance of a partial nitritation SBR treating high nitrogen loads<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[68],"tags":[],"class_list":["post-12490","post","type-post","status-publish","format-standard","hentry","category-doctoral-theses_ca"],"_links":{"self":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/12490","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=12490"}],"version-history":[{"count":1,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/12490\/revisions"}],"predecessor-version":[{"id":12491,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/12490\/revisions\/12491"}],"wp:attachment":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/media?parent=12490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/categories?post=12490"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/tags?post=12490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}