{"id":6423,"date":"2021-11-09T13:18:16","date_gmt":"2021-11-09T17:18:16","guid":{"rendered":"https:\/\/www.ovivowater.com\/?post_type=product&#038;p=6423"},"modified":"2025-10-23T08:38:18","modified_gmt":"2025-10-23T12:38:18","slug":"g-tad-process","status":"publish","type":"product","link":"https:\/\/www.ovivowater.com\/en\/product\/g-tad-process\/","title":{"rendered":"Gravity Thickening Equipment \u2013 Class B Biosolids Stabilisation"},"content":{"rendered":"<div data-block_c10bde93dd6fc36760a1607638afa4a7 class=\"ovivo-content-block block-image-text \">\n  <div class=\"container\">\n    <div class=\"row justify-content-between align-items-center\">\n      <div class=\"col-12 image-div col-md-6 order-md-2\">\n                              <div class=\"block-image-text__slider--wrapper\">\n              <div class=\"block-image-text__slider--slides\">\n                                                  \n                  <div class=\"block-image-text__slider--slide\">\n                                                                                        \n                                              <img decoding=\"async\" src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/GTAD_001_735X551.webp\" alt=\"The G-TAD Process uses a unique non-clog single drop diffuser system\" class=\"img-fluid block-image-text__slide\">\n                                                            <\/div>\n                                                    \n                  <div class=\"block-image-text__slider--slide\">\n                                                                                        \n                                              <img data-lazy=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/GTAD_002_735X551.webp\" alt=\"Combine sludge thickening and controlled aerobic digestion into one seamless operation\" class=\"img-fluid block-image-text__slide\">\n                                                            <\/div>\n                 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src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/GTAD_001_735X551.webp\" alt=\"The G-TAD Process uses a unique non-clog single drop diffuser system\" class=\"img-fluid\">\n                                                <\/div>\n                                                                <div class=\"block-image-text__slider--slide\">\n                                                                                                                                            <img decoding=\"async\" src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/GTAD_002_735X551.webp\" alt=\"Combine sludge thickening and controlled aerobic digestion into one seamless operation\" class=\"img-fluid\">\n                                                <\/div>\n                                                                <div class=\"block-image-text__slider--slide\">\n                                                                                                                                            <img decoding=\"async\" src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/GTAD_003_735X551.webp\" alt=\"Air Bridge over G-TAD Process\" class=\"img-fluid\">\n                                                <\/div>\n                                                            <\/div>\n                                  <\/div>\n                          <\/div>\n                        <\/div>\n      <div class=\"col-12 text-div col-md-6 col-xl-5 pl-lg-5 pl-xl-3\">\n                      <div class=\"wysiwyg\">\n                \n                                  <div class=\"block-image-text__microcopy\">Slude Gravity Thickener<\/div>\n<h1 class=\"block-image-text__heading\">G-TAD<sup>\u2122<\/sup> Process<\/h1>\n\n                                                  <h6 class=\"block-image-text__subheading\">The Gravity Thickened Aerobic Digestion (G-TAD) process is a controlled aerobic process meeting Class B stabilisation requirements and making use of a unique non-clog single drop diffuser system.<\/h6>\n                                                  <p>Requiring minimal operator supervision, the G-TAD process thickens solids up to 2 percent which can reduce aerobic digestion volume, footprint and energy costs.<\/p>\n                                                  <a href=\"https:\/\/www.ovivowater.com\/en\/contact\/\" target=\"\"\n                     class=\"secondary-button imgblock-common_button\">\n                    <span>Contact an Expert<\/span>\n                    <i class=\"icon-ovivo-arrow\"><\/i>\n                  <\/a>\n                                              <\/div>\n          <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n\n<div data-block_f3b7398b64c360b4b7b78604aaf676f8 class=\"ovivo-content-block anchor-nav-content__wrapper owproduct-tblcontent-wraper\">\n    <div class=\"anchor-nav-content__nav--sticky\">\n        <div class=\"container\">\n            <div class=\"row\">\n                <div class=\"col-12 p-0 pr-lg-3 pl-lg-3\">\n                    <ul class=\"nav nav-tabs anchor-nav-content__nav--listing fc-anchor-nav-content-nav\">\n                                                                                    <li class=\"nav-item anchor-nav-content__nav--single\" role=\"presentation\">\n                                    <a class=\"nav-link active \" href=\"#pills-0\">Features &amp; Benefits<\/a>\n                                <\/li>\n                                                            <li class=\"nav-item anchor-nav-content__nav--single\" role=\"presentation\">\n                                    <a class=\"nav-link \" href=\"#pills-1\">How it works<\/a>\n                                <\/li>\n                                                        <li class=\"nav-item anchor-nav-content__nav--single related\" role=\"presentation\">\n                                <a class=\"nav-link\" href=\"#pills-related\">Related Products<\/a>\n                            <\/li>\n                                            <\/ul>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n    <div class=\"anchor-nav-content__tabs\">\n                                                                            <div class=\"anchor-nav-content__tab  otablecontent-1\" id=\"pills-0\" name=\"pills-0\" >\n                    <div class=\"container\">\n                        <div class=\"row\">\n                            <div class=\"col-12\">\n                                <div id=\"accordion-pills-0\" role=\"tablist\" aria-multiselectable=\"true\">\n                                    <div class=\"card\">\n                                        <div class=\"card-header\" role=\"tab\" id=\"section1HeaderId\">\n                                            <h2 class=\"mb-0\">\n                                                <a class=\"anchor-nav-content__tab--title\" data-toggle=\"collapse\" data-parent=\"#accordion-pills-0\" href=\"#accordion-content-0\" aria-expanded=\"true\" aria-controls=\"#accordion-content-0\">\n                                                    Features &amp; Benefits\n                                                <\/a>\n                                            <\/h2>\n                                        <\/div>\n                                                                                                                                <div id=\"accordion-content-0\" class=\"in collapse show\" role=\"tabpanel\" aria-labelledby=\"section1HeaderId\">\n                                                <div class=\"card-body\">\n                                                    <div class=\"anchor-nav-content__tab--content\">\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        <div class=\"row justify-content-center \">\n                                                                        <div class=\"col-12 col-lg-10 col-xl-9 col-xxl-8\">\n                                                                            <div data-block_f3b7398b64c360b4b7b78604aaf676f8 class=\"ovivo-content-block block-generic-content__wrapper\">\n    <div class=\"container\">\n        <div class=\"row justify-content-center\">\n            <div class=\"col-12  \">\n                <div class=\"owrow\">\n                                            <div class=\"block-generic-content__single wysiwyg \">\n                                                                                        <p>With 16,000 facilities treating more than 30 billion gallons of wastewater every day in the United States, biosolids management is a serious issue in municipal wastewater treatment and is responsible for between 30 and 60 percent of operating and maintenance expenses.<\/p>\n<p>Ovivo\u2019s G-TAD process solution is ideal for both new plants and existing plants looking to retrofit. These solutions also allow plants to maintain the industry standard of using solids in land applications instead of just disposing to landfills.<\/p>\n<h3>Improve biosolids management system with minimal cost and effort<\/h3>\n<p>Ovivo\u2019s G-TAD process combine sludge thickening and controlled aerobic digestion into one seamless operation, dramatically improving your plants treatment ability to efficiently manage biosolids while reducing daily operating and maintenance costs. The features and benefits of these solutions include:<\/p>\n<ul>\n<li>Class B biosolids stabilisation<\/li>\n<li>Minimised footprint<\/li>\n<li>Operating simplicity<\/li>\n<li>Easy retrofit technology<\/li>\n<li>Minimal nutrients returned to the upstream liquid treatment process<\/li>\n<li>Reduced operating and disposal costs<\/li>\n<li>Minimal operator supervision during thickening<\/li>\n<\/ul>\n\n                                                    <\/div>\n                                    <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n                                                                        <\/div>\n                                                                    <\/div>\n                                                                                                                                                                                                                                                    <div class=\"row justify-content-center is_last\">\n                                                                        <div class=\"col-12\">\n                                                                                                                                                        <div data-block_f3b7398b64c360b4b7b78604aaf676f8 class=\"ovivo-content-block block-video__wrapper\" videobynderId=\"block_f3b7398b64c360b4b7b78604aaf676f8\">\n        <div class=\"container\">\n            <div class=\"row justify-content-center\">\n                <div class=\"col-12 col-lg-10\">\n                    <div class=\"block-video__overlay-button--wrapper\" id=\"vidblock_f3b7398b64c360b4b7b78604aaf676f8\">\n                        <div class=\"block-video__overlay-button--button\">\n                        <\/div>\n                    <\/div>\n                    <video class=\"wp-video-shortcode\" poster=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/webimage-Huxley-GTAD-Testimonial.jpg\" preload=\"metadata\" src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/Huxley-GTAD-Testimonial.mp4\">\n                        <source type=\"video\/mp4\" src=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/Huxley-GTAD-Testimonial.mp4\">\n                        <a href=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/Huxley-GTAD-Testimonial.mp4\">https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/Huxley-GTAD-Testimonial.mp4<\/a>\n                    <\/video>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <script>\n        var parent = \"data-block_f3b7398b64c360b4b7b78604aaf676f8\";\n        \/\/ jQuery('.block-video__overlay-button--wrapper', '['+parent+']').on('click', function() {\n        \/\/     jQuery('.block-video__overlay-button--wrapper', '['+parent+']').fadeOut(300);\n        \/\/     jQuery('video', '['+parent+']').get(0).play();\n        \/\/     jQuery('video', '['+parent+']').first().attr('controls',true);\n        \/\/ });\n        jQuery('#vidblock_f3b7398b64c360b4b7b78604aaf676f8').on('click', function() {\n            \n            vobj = jQuery('#vidblock_f3b7398b64c360b4b7b78604aaf676f8');\n            vobj.fadeOut(300);\n           \n            var clickedVideoid = vobj.parents('.container > .row.justify-content-center > .col-12.col-lg-10').find('video').attr('id');\n            jQuery('#'+clickedVideoid).get(0).play();\n            jQuery('#'+clickedVideoid).first().attr('controls',true);\n        });\n    <\/script>\n                                                                        <\/div>\n                                                                    <\/div>\n                                                                                                                                                                                <\/div>\n                                                <\/div>\n                                            <\/div><!--accordion-content-0-->\n                                                                                            <div class=\"anchor-nav-content__tab--downloadable_ressources\">\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            <div class=\"row justify-content-center \">\n                                                        <div class=\"col-12\">\n                                                            <div data-block_f3b7398b64c360b4b7b78604aaf676f8 class=\"ovivo-content-block block-digital-assets__wrapper\">\n            <div class=\"container\">\n                <div class=\"row\">\n                    <div class=\"col-12 offset-lg-3 col-lg-6\">\n                        <h4 class=\"block-digital-assets__title\">\n                            Downloadable Resources\n                        <\/h4>\n                    <\/div>\n                <\/div>\n            <\/div>\n            <div class=\"container\">\n                <div class=\"row justify-content-center\">\n                                            <div class=\"col-12 col-md-6 col-lg-3\">\n                            <a href=\"https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/G-TAD-Process.pdf\" target=\"_blank\" class=\"block-digital-assets__single\">\n                                <div class=\"block-digital-assets__single--title\">\n                                    G-TAD\u2122\n                                <\/div>\n                                <div class=\"block-digital-assets__single--sub-title\">\n                                    BROCHURE\n                                <\/div>\n                                <div class=\"block-digital-assets__single--description\">\n                                    Gravity thickening aerobic digestion.\n                                <\/div>\n                            <\/a>\n                        <\/div>\n                                    <\/div>\n            <\/div>\n        <\/div>\n                                                            <\/div>\n                                                    <\/div>\n                                                <\/div>\n                                                                                                                        <\/div>\n                                <\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n                                                            <div class=\"anchor-nav-content__tab  otablecontent-2\" id=\"pills-1\" name=\"pills-1\" >\n                    <div class=\"container\">\n                        <div class=\"row\">\n                            <div class=\"col-12\">\n                                <div id=\"accordion-pills-1\" role=\"tablist\" aria-multiselectable=\"true\">\n                                    <div class=\"card\">\n                                        <div class=\"card-header\" role=\"tab\" id=\"section1HeaderId\">\n                                            <h2 class=\"mb-0\">\n                                                <a class=\"anchor-nav-content__tab--title\" data-toggle=\"collapse\" data-parent=\"#accordion-pills-1\" href=\"#accordion-content-1\" aria-expanded=\"true\" aria-controls=\"#accordion-content-1\">\n                                                    How it works\n                                                <\/a>\n                                            <\/h2>\n                                        <\/div>\n                                                                                                                                <div id=\"accordion-content-1\" class=\"in collapse show\" role=\"tabpanel\" aria-labelledby=\"section1HeaderId\">\n                                                <div class=\"card-body\">\n                                                    <div class=\"anchor-nav-content__tab--content\">\n                                                                                                                                                                                        <div class=\"row justify-content-center \">\n                                                                        <div class=\"col-12\">\n                                                                            \n                                                    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digester basins along with a pre-mix basin and a gravity thickener to treat raw sludge. The raw sludge enters the premix basin where it is mixed and aerated to increase microbial activity and dissolved oxygen concentration. The sludge then overflows to the gravity thickener where solids settle to the bottom without aeration, creating an anoxic stage for denitrification to occur, stabilising the pH. The supernatant is removed and returned to the head of the plant. The thickened sludge is airlifted to the in-loop digester where nitrification occurs with less aeration than normally required due to alternating anoxic\/aerobic phases. Scum is collected in the gravity thickener and also airlifted to the in-loop digester. Digested sludge overflows back to the pre-mix, completing the loop and continuously decanting and thickening the sludge.<\/p>\n<p>1. Raw sludge and scum from liquid treatment process<br \/>\n2. Gravity Thickener Influent<br \/>\n3. Thickened Sludge and Scum airlifted from Gravity Thickener<br \/>\n4. Nitrified Sludge gravity flowing from In-loop Aerobic Digester<br \/>\n5. Gravity Thickener Supernatant<br \/>\n6. Class B Digested Sludge Product<\/p>\n\n                                                                                              <\/div>\n          <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n                                                                        <\/div>\n                                                                    <\/div>\n                                                                                                                                                                                                                                                                                                                                                                                                                                            <\/div>\n                                                <\/div>\n                                            <\/div><!--accordion-content-1-->\n                                                                                                                        <\/div>\n                                <\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n                                                        <div class=\"anchor-nav-content__tab otablecontent-3\" id=\"pills-related\" name=\"pills-related\">\n                    <div class=\"container\">\n                        <div class=\"row\">\n                            <div class=\"col-12\">\n                                <div id=\"accordion-pills-related\" role=\"tablist\" aria-multiselectable=\"true\">\n                                    <div class=\"card\">\n                                        <div class=\"card-header\" role=\"tab\" id=\"section1HeaderId\">\n                                            <h2 class=\"mb-0\">\n                                                <span class=\"anchor-nav-content__tab--title\" data-parent=\"#accordion-pills-related\" href=\"#accordion-content-related\" aria-expanded=\"true\" aria-controls=\"#accordion-content-related\">\n                                                Related Products\n                                                <\/span>\n                                            <\/h2>\n                                        <\/div>\n                                        <div id=\"accordion-content-related\" class=\"in collapse show\" role=\"tabpanel\" aria-labelledby=\"section1HeaderId\">\n                                            <div class=\"card-body\">\n                                                <div class=\"anchor-nav-content__tab--content\">\n                                                    <div class=\"anchor-nav-content__tab--related-products\">\n                                                                                                                <div data-block_f3b7398b64c360b4b7b78604aaf676f8 class=\"ovivo-content-block block-tiles-images__wrapper my-3 my-lg-5\">\n            <div class=\"row mobile-scroll justify-content-lg-center\">\n                                                                                    <div class=\" col-10 col-md-8 col-lg-3 owrelateprod-sec-1\">\n                            <a href=\"https:\/\/www.ovivowater.com\/en\/product\/airbeam-cover-aeration-system\/\" target=\"\" class=\"generic-tiles__single\">\n                                <div class=\"generic-tiles__single--image\" style=\"background-image:url(https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/Airbeam_735X551_002.jpg)\"><\/div>\n                                <div class=\"generic-tiles__single--content\">\n                                    <div class=\"generic-tiles__single--title\">\n                                        Airbeam<sup>\u00ae<\/sup> Cover Aeration System\n                                    <\/div>\n                                    <div class=\"generic-tiles__single--description\">\n                                        The Airbeam Cover Aeration System is an innovative technology for aerobic digestion tanks that allows easy access for maintenance. It combines a single drop coarse bubble diffuser aeration system with&hellip;\n                                    <\/div>\n                                    <div class=\"generic-tiles__single--link\">\n                                        <span>Read more<\/span>\n                                        <i class=\"icon-ovivo-arrow\"><\/i>\n                                    <\/div>\n                                <\/div>\n                            <\/a>\n                        <\/div>\n                                        \n                    \n                                                                                <div class=\" col-10 col-md-8 col-lg-3 owrelateprod-sec-2\">\n                            <a href=\"https:\/\/www.ovivowater.com\/en\/product\/transmax-ms-diffusers\/\" target=\"\" class=\"generic-tiles__single\">\n                                <div class=\"generic-tiles__single--image\" style=\"background-image:url(https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/Trans-Max_MS-Diffuser_001_735x551.webp)\"><\/div>\n                                <div class=\"generic-tiles__single--content\">\n                                    <div class=\"generic-tiles__single--title\">\n                                        TransMAX &amp; MS Diffusers\n                                    <\/div>\n                                    <div class=\"generic-tiles__single--description\">\n                                        TransMAX &amp; MS Diffusers are versatile non-clog aeration systems for wastewater treatment and biosolids management. They provide excellent mixing and aeration of biosolids with simplified maintenance, long service life, and&hellip;\n                                    <\/div>\n                                    <div class=\"generic-tiles__single--link\">\n                                        <span>Read more<\/span>\n                                        <i class=\"icon-ovivo-arrow\"><\/i>\n                                    <\/div>\n                                <\/div>\n                            <\/a>\n                        <\/div>\n                                        \n                    \n                                                                                <div class=\" col-10 col-md-8 col-lg-3 owrelateprod-sec-3\">\n                            <a href=\"https:\/\/www.ovivowater.com\/en\/product\/shear-tubes-multi-eductor-draft-tube-medt\/\" target=\"\" class=\"generic-tiles__single\">\n                                <div class=\"generic-tiles__single--image\" style=\"background-image:url(https:\/\/www.ovivowater.com\/app\/uploads\/2026\/09\/PDP-Shear-Tubes-MEDT-_735X551_001B.webp)\"><\/div>\n                                <div class=\"generic-tiles__single--content\">\n                                    <div class=\"generic-tiles__single--title\">\n                                        Shear Tubes &amp; Multi-Eductor Draft Tube (MEDT)\n                                    <\/div>\n                                    <div class=\"generic-tiles__single--description\">\n                                        An advanced aeration &amp; mixing solution for aerobic digestion systems with thicker solids applications. When combined with a TransMAX or MS Diffuser, Shear Tubes &amp; MEDT, the solution provides exceptional&hellip;\n                                    <\/div>\n                                    <div class=\"generic-tiles__single--link\">\n                                        <span>Read more<\/span>\n                                        <i class=\"icon-ovivo-arrow\"><\/i>\n                                    <\/div>\n                                <\/div>\n                            <\/a>\n                        <\/div>\n                                        \n                    \n                                                   \n                    <\/div>\n    <\/div>\n                                                    <\/div>\n                                                <\/div>\n                                            <\/div>\n                                        <\/div>\n                                    <\/div>\n                                <\/div>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                <\/div>\n                        <\/div>\n<\/div>\n\n\n<div data-block_60525e617e57e class=\"ovivo-content-block block-tiles__wrapper pt-5\">\n    <div class=\"container\">\n        <div class=\"row justify-content-center \">\n                                            \n                                                                                    <div class=\"col-12 col-lg-4 mb-4\">\n                                                    <a href=\"https:\/\/www.ovivowater.com\/en\/services\/\" target=\"\" class=\"generic-tiles__single alt-style {}\">\n                                <div class=\"generic-tiles__single--content\">\n                                                                            <div class=\"generic-tiles__single--title\">\n                                            Parts &amp; 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