{"id":6007,"date":"2018-04-11T19:12:21","date_gmt":"2018-04-11T17:12:21","guid":{"rendered":"http:\/\/agora.xtec.cat\/ietemple\/\/?p=6007"},"modified":"2018-04-11T19:17:28","modified_gmt":"2018-04-11T17:17:28","slug":"com-es-depura-laigua","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ietemple\/general\/com-es-depura-laigua\/","title":{"rendered":"COM ES DEPURA L&#8217;AIGUA?"},"content":{"rendered":"<p>Els alumnes de 3r de prim\u00e0ria, el dijous 5 d\u2019abril hem visitat la Depuradora d\u2019Aig\u00fces Residuals de Tortosa \u2013 Roquetes. La sortida estava emmarcada dintre de la tem\u00e0tica del projecte sobre l\u2019aigua que estem desenvolupant. All\u00ed ens han explicat com es tracta l\u2019aigua. Per fer-ho es segueixen els seg\u00fcents passos:<\/p>\n<ul>\n<li><span style=\"color: #5b9bd5;\"><b>Arqueta d\u2019entrada: <\/b><\/span>L\u2019aigua residual de Tortosa, Roquetes i Jes\u00fas arriba a la depuradora.<\/li>\n<li><span style=\"color: #5b9bd5;\"><b>Separaci\u00f3 de sorres i greixos: <\/b><\/span><span style=\"color: #000000;\">L\u2019aigua passa per unes reixes on queden retinguts els objectes que arrossega. Un mecanisme de neteja els diposita en una cinta que els aboca a un contenidor. El seu dest\u00ed \u00e9s l\u2019abocador.<\/span><\/li>\n<\/ul>\n<p>Al mateix lloc, les sorres cauen al fons, s\u00f3n aspirades i tamb\u00e9 van cap a un contenidor.<\/p>\n<p>Les sorres i els greixos tamb\u00e9 van a l\u2019abocador.<\/p>\n<ul>\n<li><span style=\"color: #5b9bd5;\"><b>Decantaci\u00f3 prim\u00e0ria: <\/b><\/span>Es fa a dues grans basses circulars on l\u2019aigua bruta entra pel centre, i es mou lentament cap a les vores. El fang en suspensi\u00f3 va cap al fons i es retirat. S\u2019anomena fang primari.<\/li>\n<\/ul>\n<p>L\u2019aigua decantada surt per la vora. \u00c9s m\u00e9s neta, per\u00f2 porta encara mat\u00e8ria org\u00e0nica dissolta.<\/p>\n<ul>\n<li><span style=\"color: #5b9bd5;\"><b>Tractament biol\u00f2gic: <\/b><\/span>Es fa en unes basses on viuen una gran quantitat de microorganismes que s\u2019alimenten de mat\u00e8ria org\u00e0nica dissolta i es reprodueixen massivament.<\/li>\n<\/ul>\n<p>Com que s\u00f3n aerobis se\u2019ls ha de subministrar oxigen atmosf\u00e8ric, una manera de fer-ho \u00e9s remenant fortament la superf\u00edcie de l\u2019aigua amb unes turbines.<\/p>\n<p>Quan l\u2019aigua surt de les basses hi ha microorganismes agrupats en grumolls.<\/p>\n<ul>\n<li><span style=\"color: #5b9bd5;\"><b>Decantaci\u00f3 secund\u00e0ria: <\/b><\/span>Amb una nova decantaci\u00f3 aquests grumolls de microorganismes sedimenten al fons i s\u00f3n retirats. \u00c9s el fang secundari. L\u2019aigua neta surt per les vores.<\/li>\n<li><span style=\"color: #5b9bd5;\"><b>Sortida d\u2019aigua al riu:<\/b><\/span> L\u2019aigua depurada \u00e9s abocada al riu.<\/li>\n<li><span style=\"color: #5b9bd5;\"><b>Tancament del cicle del consum de l\u2019aigua:<\/b><\/span> L\u2019aigua ha completat el seu cicle de consum: Torna al riu d\u2019on havia sortit, i prou neta com per no perjudicar la vida aqu\u00e0tica.<\/li>\n<\/ul>\n<p style=\"text-align: right;\"><b>Mestres de 3r de prim\u00e0ria<\/b><\/p>\n<p style=\"text-align: right;\"><a href=\"https:\/\/photos.app.goo.gl\/KhFe4KXBd248GnX13\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6008 size-full\" src=\"http:\/\/agora.xtec.cat\/ietemple\/\/wp-content\/uploads\/usu352\/2018\/04\/DSCN3022.jpg\" alt=\"\" width=\"480\" height=\"640\" srcset=\"https:\/\/agora.xtec.cat\/ietemple\/wp-content\/uploads\/usu352\/2018\/04\/DSCN3022.jpg 480w, https:\/\/agora.xtec.cat\/ietemple\/wp-content\/uploads\/usu352\/2018\/04\/DSCN3022-225x300.jpg 225w\" sizes=\"auto, (max-width: 480px) 100vw, 480px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Els alumnes de 3r de prim\u00e0ria, el dijous 5 d\u2019abril hem visitat la Depuradora d\u2019Aig\u00fces Residuals de Tortosa \u2013 Roquetes. La sortida estava emmarcada dintre de la tem\u00e0tica del projecte sobre l\u2019aigua que estem desenvolupant. All\u00ed ens han explicat com es tracta l\u2019aigua. Per fer-ho&hellip;  <a href=\"https:\/\/agora.xtec.cat\/ietemple\/general\/com-es-depura-laigua\/\" title=\"Read COM ES DEPURA L&#8217;AIGUA?\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":20,"featured_media":6011,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[1,12],"tags":[],"class_list":["post-6007","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","category-3r"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/ietemple\/wp-json\/wp\/v2\/posts\/6007","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/ietemple\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/ietemple\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ietemple\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ietemple\/wp-json\/wp\/v2\/comments?post=6007"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/ietemple\/wp-json\/wp\/v2\/posts\/6007\/revisions"}],"predecessor-version":[{"id":6012,"href":"https:\/\/agora.xtec.cat\/ietemple\/wp-json\/wp\/v2\/posts\/6007\/revisions\/6012"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ietemple\/wp-json\/wp\/v2\/media\/6011"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/ietemple\/wp-json\/wp\/v2\/media?parent=6007"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ietemple\/wp-json\/wp\/v2\/categories?post=6007"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ietemple\/wp-json\/wp\/v2\/tags?post=6007"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}