{"id":3893,"date":"2025-06-13T20:44:34","date_gmt":"2025-06-13T20:44:34","guid":{"rendered":"https:\/\/aquaponictec.com\/?p=3893"},"modified":"2025-06-16T09:30:14","modified_gmt":"2025-06-16T09:30:14","slug":"biofilter-in-ras","status":"publish","type":"post","link":"https:\/\/aquaponictec.com\/ar\/biofilter-in-ras\/","title":{"rendered":"\u0627\u0644\u0641\u0644\u062a\u0631 \u0627\u0644\u062d\u064a\u0648\u064a \u0641\u064a \u0623\u0646\u0638\u0645\u0629 RAS"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"3893\" class=\"elementor elementor-3893\">\n\t\t\t\t<div class=\"elementor-element elementor-element-965d5e4 e-flex e-con-boxed e-con e-parent\" data-id=\"965d5e4\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-1b3e753 e-con-full e-flex e-con e-child\" data-id=\"1b3e753\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0239671 elementor-widget elementor-widget-heading\" data-id=\"0239671\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">\u0627\u0644\u0645\u062f\u0648\u0646\u0629<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-25a484f0 e-flex e-con-boxed e-con e-parent\" data-id=\"25a484f0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<h4 data-interaction-id=\"6521ad79\" class=\"e-heading-base\">aquaponictec.com<\/h4>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3be0d5a0 e-flex e-con-boxed e-con e-parent\" data-id=\"3be0d5a0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3fefc85b elementor-widget elementor-widget-heading\" data-id=\"3fefc85b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h6 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/aquaponictec.com\/ar\/category\/\">&lt;&lt; \u062c\u0645\u064a\u0639 \u0627\u0644\u0645\u0642\u0627\u0644\u0627\u062a<\/a><\/h6>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0a1293b e-flex e-con-boxed e-con e-parent\" data-id=\"0a1293b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<h2 data-interaction-id=\"58f43dc\" class=\"e-heading-base\">1. \u062f\u0648\u0631 \u0645\u0631\u0634\u062d \u0627\u0644\u0623\u062d\u064a\u0627\u0621 \u0627\u0644\u062d\u064a\u0648\u064a\u0629 (\u0627\u0644\u0628\u064a\u0648\u0641\u0644\u062a\u0631) \u0641\u064a \u0646\u0638\u0627\u0645 RAS<\/h2>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-17ad963 e-grid e-con-boxed e-con e-parent\" data-id=\"17ad963\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<p class=\"e-paragraph-base translation-block\" data-interaction-id=\"be090d1\">\ud83e\uddeb \u0641\u064a \u0646\u0638\u0627\u0645 \u0627\u0644\u0627\u0633\u062a\u0632\u0631\u0627\u0639 \u0627\u0644\u0645\u0627\u0626\u064a \u0627\u0644\u062f\u0627\u0626\u0631\u064a (RAS)\u060c \u064a\u064f\u0639\u062f \u0627\u0644\u0641\u0644\u062a\u0631 \u0627\u0644\u0628\u064a\u0648\u0644\u0648\u062c\u064a (Biofilter) \u0639\u0646\u0635\u0631\u064b\u0627 \u0623\u0633\u0627\u0633\u064a\u064b\u0627 \u0644\u062a\u062d\u0648\u064a\u0644 \u0627\u0644\u0623\u0645\u0648\u0646\u064a\u0627 \u0627\u0644\u0633\u0627\u0645\u0629 (\u0645\u0646 \u0641\u0636\u0644\u0627\u062a \u0627\u0644\u0623\u0633\u0645\u0627\u0643) \u0625\u0644\u0649 \u0646\u062a\u0631\u0627\u062a \u0623\u0642\u0644 \u0636\u0631\u0631\u064b\u0627 \u0645\u0646 \u062e\u0644\u0627\u0644 \u062f\u0648\u0631\u0629 \u0627\u0644\u0646\u064a\u062a\u0631\u0648\u062c\u064a\u0646.<\/p>\n\t\t\t\t<div class=\"elementor-element elementor-element-f7029f0 elementor-arrows-position-inside elementor-pagination-position-outside elementor-widget elementor-widget-image-carousel\" data-id=\"f7029f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;navigation&quot;:&quot;both&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;pause_on_hover&quot;:&quot;yes&quot;,&quot;pause_on_interaction&quot;:&quot;yes&quot;,&quot;autoplay_speed&quot;:5000,&quot;infinite&quot;:&quot;yes&quot;,&quot;speed&quot;:500}\" data-widget_type=\"image-carousel.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-image-carousel-wrapper swiper\" role=\"region\" 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decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/aquaponictec.com\/wp-content\/uploads\/2025\/06\/333-150x150.png\" alt=\"333\" \/><\/figure><\/div><div class=\"swiper-slide\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"7 \/ 7\"><figure class=\"swiper-slide-inner\"><img decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/aquaponictec.com\/wp-content\/uploads\/2025\/06\/792cdaf75c1286b955cde003e786688-150x150.jpg\" alt=\"792cdaf75c1286b955cde003e786688\" \/><\/figure><\/div>\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-prev\" role=\"button\" tabindex=\"0\">\n\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-left\" viewbox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M646 125C629 125 613 133 604 142L308 442C296 454 292 471 292 487 292 504 296 521 308 533L604 854C617 867 629 875 646 875 663 875 679 871 692 858 704 846 713 829 713 812 713 796 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data-id=\"b7fa137\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f0d5f8b elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"f0d5f8b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7bc890a7 e-flex e-con-boxed e-con e-parent\" data-id=\"7bc890a7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ac660bd elementor-widget elementor-widget-text-editor\" data-id=\"ac660bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<article class=\"aquaponics-benefits\" style=\"font-family: Arial,Helvetica,sans-serif; line-height: 1.75; max-width: 800px; margin: auto; color: #333;\">\n<ol>\n<h2><strong>1. Role of a Biofilter in RAS<\/strong><\/h2>\nThe biofilter hosts\u00a0<strong><b>beneficial bacteria<\/b><\/strong>\u00a0that perform\u00a0<strong><b>nitrification<\/b><\/strong>:\n\n<strong><b>\u0627\u0644\u0623\u0645\u0648\u0646\u064a\u0627<\/b><\/strong>\u00a0\u2192\u00a0Nitrosomonas\u00a0bacteria \u2192\u00a0<strong><b>Nitrite (NO\u2082\u207b)<\/b><\/strong>\n\n<strong><b>Nitrite (NO\u2082\u207b)<\/b><\/strong>\u00a0\u2192\u00a0Nitrobacter\u00a0bacteria \u2192\u00a0<strong><b>Nitrate (NO\u2083\u207b)<\/b><\/strong>\n(Nitrate is removed via water exchange or denitrification.)\n\nWithout a biofilter, ammonia\/nitrite buildup can\u00a0<strong><b>kill fish rapidly<\/b><\/strong>.\n<h2><strong><b>2. \u0623\u0646\u0648\u0627\u0639 \u0627\u0644\u0641\u0644\u0627\u062a\u0631 \u0627\u0644\u0628\u064a\u0648\u0644\u0648\u062c\u064a\u0629 \u0644\u0623\u0646\u0638\u0645\u0629 RAS<\/b><\/strong><\/h2>\nBiofilters are categorized by their\u00a0<strong><b>media type<\/b><\/strong>\u00a0and\u00a0<strong><b>flow design<\/b><\/strong>:\n<h3><strong><b>A. \u0627\u0644\u0641\u0644\u0627\u062a\u0631 \u0627\u0644\u0628\u064a\u0648\u0644\u0648\u062c\u064a\u0629 \u0627\u0644\u0645\u063a\u0645\u0648\u0631\u0629 (\u0627\u0644\u0633\u0631\u064a\u0631 \u0627\u0644\u062b\u0627\u0628\u062a)<\/b><\/strong><\/h3>\n<strong><b>Media<\/b><\/strong>: Plastic beads, ceramic rings, or porous gravel.\n\n<strong><b>How it works<\/b><\/strong>: Water flows through a submerged media bed where bacteria colonize.\n\n<strong><b>\u0645\u062b\u0627\u0644\u064a \u0644\u0640: \u0623\u0646\u0638\u0645\u0629 \u0630\u0627\u062a \u062d\u0645\u0644 \u0639\u0627\u0644\u064d \u0645\u062b\u0644 \u062a\u0631\u0628\u064a\u0629 \u0627\u0644\u0633\u0644\u0645\u0648\u0646 \u0648\u0627\u0644\u0633\u0644\u0645\u0648\u0646 \u0627\u0644\u0645\u0631\u0642\u0637.<\/b><\/strong>: Small to medium RAS, low energy use.\n\n<strong><b>\u0627\u0644\u0645\u0632\u0627\u064a\u0627<\/b><\/strong>: Simple, low cost.\u00a0Fox example, <strong><b>\u0645\u0641\u0627\u0639\u0644 \u0627\u0644\u0637\u0628\u0642\u0629 \u0627\u0644\u062d\u064a\u0648\u064a\u0629 \u0627\u0644\u0645\u062a\u062d\u0631\u0643\u0629 (MBBR)<\/b><\/strong>\u00a0(plastic media in suspension)\u00a0and <strong><b>Fluidized Sand Filter<\/b><\/strong>\u00a0(fine sand media, high efficiency).\n<h3><strong><b>B. \u0641\u0644\u0627\u062a\u0631 \u0627\u0644\u062a\u0646\u0642\u064a\u0637 (\u0627\u0644\u062a\u0642\u0637\u064a\u0631)<\/b><\/strong><\/h3>\n<strong><b>Media<\/b><\/strong>: Plastic bio-balls, lava rock, or structured PVC sheets.\n\n<strong><b>How it works<\/b><\/strong>: Water trickles over media exposed to air (high oxygen transfer).\n\n<strong><b>\u0645\u062b\u0627\u0644\u064a \u0644\u0640: \u0623\u0646\u0638\u0645\u0629 \u0630\u0627\u062a \u062d\u0645\u0644 \u0639\u0627\u0644\u064d \u0645\u062b\u0644 \u062a\u0631\u0628\u064a\u0629 \u0627\u0644\u0633\u0644\u0645\u0648\u0646 \u0648\u0627\u0644\u0633\u0644\u0645\u0648\u0646 \u0627\u0644\u0645\u0631\u0642\u0637.<\/b><\/strong>: High-load systems (e.g., trout, salmon RAS).\n\n<strong><b>\u0627\u0644\u0645\u0632\u0627\u064a\u0627<\/b><\/strong>: Excellent aeration, low clogging.\n<h3><strong><b>C. \u0641\u0644\u0627\u062a\u0631 \u0627\u0644\u0637\u0628\u0642\u0629 \u0627\u0644\u0645\u0645\u064a\u0639\u0629<\/b><\/strong><\/h3>\n<strong><b>Media<\/b><\/strong>: Fine sand or plastic microbeads.\n\n<strong><b>How it works<\/b><\/strong>: Water flows upward, fluidizing media for max bacteria contact.\n\n<strong><b>\u0645\u062b\u0627\u0644\u064a \u0644\u0640: \u0623\u0646\u0638\u0645\u0629 \u0630\u0627\u062a \u062d\u0645\u0644 \u0639\u0627\u0644\u064d \u0645\u062b\u0644 \u062a\u0631\u0628\u064a\u0629 \u0627\u0644\u0633\u0644\u0645\u0648\u0646 \u0648\u0627\u0644\u0633\u0644\u0645\u0648\u0646 \u0627\u0644\u0645\u0631\u0642\u0637.<\/b><\/strong>: High-density systems (shrimp, tilapia).\n\n<strong><b>\u0627\u0644\u0645\u0632\u0627\u064a\u0627<\/b><\/strong>: Extremely efficient, compact.\n<h3><strong><b>D. \u0641\u0644\u0627\u062a\u0631 \u0627\u0644\u062e\u0631\u0632 (\u062a\u0631\u0634\u064a\u062d \u0645\u064a\u0643\u0627\u0646\u064a\u0643\u064a + \u0628\u064a\u0648\u0644\u0648\u062c\u064a)<\/b><\/strong><\/h3>\n<strong><b>Media<\/b><\/strong>: Floating plastic beads.\n\n<strong><b>How it works<\/b><\/strong>: Traps solids while providing surface area for bacteria.\n\n<strong><b>\u0645\u062b\u0627\u0644\u064a \u0644\u0640: \u0623\u0646\u0638\u0645\u0629 \u0630\u0627\u062a \u062d\u0645\u0644 \u0639\u0627\u0644\u064d \u0645\u062b\u0644 \u062a\u0631\u0628\u064a\u0629 \u0627\u0644\u0633\u0644\u0645\u0648\u0646 \u0648\u0627\u0644\u0633\u0644\u0645\u0648\u0646 \u0627\u0644\u0645\u0631\u0642\u0637.<\/b><\/strong>: Small RAS, backyard systems.\n\n<strong><b>\u0627\u0644\u0645\u0632\u0627\u064a\u0627<\/b><\/strong>: Dual function (mechanical + bio).<\/li>\n<\/ol>\n<\/article>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4f2c514f elementor-widget__width-initial elementor-widget elementor-widget-wp-widget-recent-posts\" data-id=\"4f2c514f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wp-widget-recent-posts.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t\n\t\t<h5>Recent Posts<\/h5><nav aria-label=\"Recent Posts\">\n\t\t<ul>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/aquaponictec.com\/ar\/aquaponics-faq\/\">Aquaponics FAQ<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/aquaponictec.com\/ar\/aquaculture-ras-filters-faqs\/\">Aquaculture RAS &#038; Filters -FAQs<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/aquaponictec.com\/ar\/sprintex-smart-blowers-in-aquaculture-wastewater-treatment\/\">Sprintex Smart Blowers in Aquaculture &#038; Wastewater Treatment<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/aquaponictec.com\/ar\/why-ozone-is-a-game-changer-for-ras\/\">\u0644\u0645\u0627\u0630\u0627 \u064a\u064f\u0639\u062f \u0627\u0644\u0623\u0648\u0632\u0648\u0646 \u062a\u062d\u0648\u0644\u0627\u064b \u062c\u0630\u0631\u064a\u064b\u0627 \u0641\u064a \u0623\u0646\u0638\u0645\u0629 RAS\u061f<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/aquaponictec.com\/ar\/why-uv-sterilization-is-widely-used-in-ras\/\">\u0644\u0645\u0627\u0630\u0627 \u064a\u064f\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u062a\u0639\u0642\u064a\u0645 \u0628\u0627\u0644\u0623\u0634\u0639\u0629 \u0641\u0648\u0642 \u0627\u0644\u0628\u0646\u0641\u0633\u062c\u064a\u0629 \u0639\u0644\u0649 \u0646\u0637\u0627\u0642 \u0648\u0627\u0633\u0639 \u0641\u064a \u0623\u0646\u0638\u0645\u0629 RAS\u061f<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/aquaponictec.com\/ar\/how-a-protein-skimmer-works-in-ras\/\">\u0643\u064a\u0641 \u064a\u0639\u0645\u0644 \u0641\u0627\u0635\u0644 \u0627\u0644\u0628\u0631\u0648\u062a\u064a\u0646 \u0641\u064a \u0646\u0638\u0627\u0645 RAS<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/aquaponictec.com\/ar\/biofilter-in-ras\/\">\u0627\u0644\u0641\u0644\u062a\u0631 \u0627\u0644\u062d\u064a\u0648\u064a \u0641\u064a \u0623\u0646\u0638\u0645\u0629 RAS<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li>\n\t\t\t\t\t<a href=\"https:\/\/aquaponictec.com\/ar\/electrical-control-box-in-ras\/\">\u0635\u0646\u062f\u0648\u0642 \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0641\u064a RAS<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t<\/ul>\n\n\t\t<\/nav>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-46c0146 e-flex e-con-boxed e-con 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data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8b44aa5 elementor-widget elementor-widget-heading\" data-id=\"8b44aa5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/aquaponictec.com\/ar\/contact\/\">\u0647\u0644 \u0623\u0646\u062a \u0645\u0633\u062a\u0639\u062f \u0644\u0628\u0646\u0627\u0621 \u0646\u0638\u0627\u0645 \u0627\u0644\u0623\u0643\u0648\u0627\u0628\u0648\u0646\u064a\u0643 \u0627\u0644\u062e\u0627\u0635 \u0628\u0643\u061f \u062f\u0639\u0646\u0627 \u0646\u062a\u062d\u062f\u062b.<\/a><\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ca27c69 e-con-full e-flex e-con e-child\" data-id=\"ca27c69\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6222304 elementor-align-right elementor-mobile-align-center elementor-widget elementor-widget-button\" data-id=\"6222304\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/aquaponictec.com\/ar\/contact\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">\u0627\u062d\u0635\u0644 \u0639\u0644\u0649 \u0639\u0631\u0636 \u0633\u0639\u0631<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\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\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Blog aquaponictec.com &lt;&lt; All Blog Electrical Control Box of RAS In a\u00a0Recirculating Aquaculture System (RAS), the\u00a0biological filter (biofilter)\u00a0is essential for converting toxic\u00a0ammonia\u00a0(from fish waste) into less harmful\u00a0nitrate\u00a0through the\u00a0nitrogen cycle. 1. Role of a Biofilter in RAS The biofilter hosts\u00a0beneficial bacteria\u00a0that perform\u00a0nitrification: Ammonia (NH\u2083\/NH\u2084\u207a)\u00a0\u2192\u00a0Nitrosomonas\u00a0bacteria \u2192\u00a0Nitrite (NO\u2082\u207b) Nitrite (NO\u2082\u207b)\u00a0\u2192\u00a0Nitrobacter\u00a0bacteria \u2192\u00a0Nitrate (NO\u2083\u207b) (Nitrate is removed via water exchange [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3827,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"enabled","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[54],"class_list":["post-3893","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-biofilter-in-ras"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - 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