{"id":11422,"date":"2025-11-17T08:47:48","date_gmt":"2025-11-17T07:47:48","guid":{"rendered":"https:\/\/dankalk.dk\/hydrogen-sulfide-and-nutriox-for-corrosion-and-odor-free-operation\/"},"modified":"2026-05-28T09:01:34","modified_gmt":"2026-05-28T07:01:34","slug":"hydrogen-sulfide-and-nutriox-for-corrosion-and-odor-free-operation","status":"publish","type":"page","link":"https:\/\/dankalk.dk\/en\/hydrogen-sulfide-and-nutriox-for-corrosion-and-odor-free-operation\/","title":{"rendered":"Hydrogen sulfide and Nutriox for corrosion and odor-free operation"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"11422\" class=\"elementor elementor-11422 elementor-10148\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e660da9 white e-flex e-con-boxed e-con e-parent\" data-id=\"e660da9\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;slideshow&quot;,&quot;background_slideshow_gallery&quot;:[{&quot;id&quot;:10580,&quot;url&quot;:&quot;https:\\\/\\\/dankalk.dk\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/DJI_0449-scaled.jpg&quot;},{&quot;id&quot;:10719,&quot;url&quot;:&quot;https:\\\/\\\/dankalk.dk\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/DJI_0906-scaled.jpg&quot;},{&quot;id&quot;:10714,&quot;url&quot;:&quot;https:\\\/\\\/dankalk.dk\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/A50A6566-scaled.jpg&quot;}],&quot;background_slideshow_ken_burns&quot;:&quot;yes&quot;,&quot;background_slideshow_loop&quot;:&quot;yes&quot;,&quot;background_slideshow_slide_duration&quot;:5000,&quot;background_slideshow_slide_transition&quot;:&quot;fade&quot;,&quot;background_slideshow_transition_duration&quot;:500,&quot;background_slideshow_ken_burns_zoom_direction&quot;:&quot;in&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-55903ee9 e-flex e-con-boxed e-con e-parent\" data-id=\"55903ee9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-5f65d8cc e-con-full e-flex e-con e-child\" data-id=\"5f65d8cc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4bda3d52 elementor-widget elementor-widget-text-editor\" data-id=\"4bda3d52\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h1>Hydrogen sulfide and Nutriox for corrosion and odor-free operation  <\/h1>\n\n<h2>Based on experience and documented nitrate solutions  <\/h2>\n\nDo you have hydrogen sulfide in your plant, where odor, corrosion or operational problems are starting to affect everyday life? Hydrogen sulfide often occurs in closed systems where oxygen is low, and the consequences quickly become apparent in both installations and the working environment. At Dankalk K\/S, we deliver solutions with Nutriox that reduce the risk of odor, corrosion and operational problems developing.    \n\nAs <a href=\"\/\">a lime plant,<\/a> we work with hydrogen sulfide in the environment and in technical plants where stable operation depends on gas formation being kept under control. Nutriox is a nitrate-based solution that is used in both wastewater systems, biogas plants and hydrogen sulfide in chemical production, while <a href=\"https:\/\/dankalk.dk\/en\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/\">ferric chloride<\/a> may be relevant in plants where hydrogen sulfide must also be chemically bound in the wastewater. \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f9b49c light elementor-widget elementor-widget-n-accordion\" data-id=\"7f9b49c\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:200,&quot;sizes&quot;:[]},&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;one&quot;}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1330\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1330\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 5 benefits of our hydrogen sulfide control   <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><i aria-hidden=\"true\" class=\"far fa-minus\"><\/i><\/span>\n\t\t\t<span class='e-closed'><i aria-hidden=\"true\" class=\"far fa-plus\"><\/i><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1330\" class=\"elementor-element elementor-element-06024c4 e-con-full no-padding e-flex e-con e-child\" data-id=\"06024c4\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ff56110 elementor-widget elementor-widget-text-editor\" data-id=\"ff56110\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Hydrogen sulfide becomes a problem when it is allowed to develop. Therefore, control is about intervening early and choosing a solution that works stably in your operation. <\/p><ul><li>Nitrate-based solutions like Nutriox stop the formation at the source<\/li><li>Experience with hydrogen sulfide in the environment and technical plants<\/li><li>Documented effect against both odor and corrosion<\/li><li>Advice on correct dosage adapted to flow and load<\/li><li>Solutions for wastewater, <a href=\"https:\/\/dankalk.dk\/en\/activated-carbon-for-biogas-with-lower-wear-on-the-plant\/\">biogas<\/a> and hydrogen sulfide in chemical production<\/li><\/ul><p>When hydrogen sulfide is removed at the source, you avoid damage to pipes, pumps and tanks. It reduces maintenance and provides more stable operation without emergency interventions. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\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<div class=\"elementor-element elementor-element-1cb3e3b5 cta e-transform elementor-widget elementor-widget-button\" data-id=\"1cb3e3b5\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_transform_scale_effect&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_scale_effect_laptop&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_scale_effect_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_scale_effect_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/dankalk.dk\/en\/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\">Contact us today<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2b4c9a80 e-con-full e-flex e-con e-child\" data-id=\"2b4c9a80\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7f9ae6e2 e-con-full dark e-flex e-con e-child\" data-id=\"7f9ae6e2\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-3118db3a e-con-full e-flex e-con e-child\" data-id=\"3118db3a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-5c3f0d54 e-con-full e-flex e-con e-child\" data-id=\"5c3f0d54\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4072eca2 elementor-widget elementor-widget-text-editor\" data-id=\"4072eca2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>Get in touch with us today!<\/h3><p>We are ready to handle your task. Contact us by phone, email or by filling out the form. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fd20e00 e-con-full e-flex e-con e-child\" data-id=\"fd20e00\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6f7415ed elementor-icon-list--layout-inline elementor-align-start elementor-mobile-align-start custom-link-color elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"6f7415ed\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items elementor-inline-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-phone-alt\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M497.39 361.8l-112-48a24 24 0 0 0-28 6.9l-49.6 60.6A370.66 370.66 0 0 1 130.6 204.11l60.6-49.6a23.94 23.94 0 0 0 6.9-28l-48-112A24.16 24.16 0 0 0 122.6.61l-104 24A24 24 0 0 0 0 48c0 256.5 207.9 464 464 464a24 24 0 0 0 23.4-18.6l24-104a24.29 24.29 0 0 0-14.01-27.6z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><a href=\"tel:33 68 74 00\" aria-label=\"Telefon nummer\">33 68 74 00<\/a><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-envelope\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><a href=\"mailto:dankalk@dankalk.dk\" aria-label=\"Email adresse\">dankalk@dankalk.dk<\/a><\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-62470fb9 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"62470fb9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\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<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-adda2e3 elementor-widget elementor-widget-wp-widget-forminator_widget\" data-id=\"adda2e3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"wp-widget-forminator_widget.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<form id=\"forminator-module-66\" class=\"forminator-custom-form forminator-custom-form-66\" method=\"post\" data-forminator-render=\"0\" data-uid=\"6a187cee4f527\"><div role=\"alert\" aria-live=\"polite\" class=\"forminator-response-message forminator-error\" aria-hidden=\"true\"><\/div><\/form>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\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-7eb5aab light e-flex e-con-boxed e-con e-parent\" data-id=\"7eb5aab\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-fbf68c5 e-con-full e-flex e-con e-child\" data-id=\"fbf68c5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-972526c e-con-full e-flex e-con e-child\" data-id=\"972526c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-134874f elementor-widget elementor-widget-text-editor\" data-id=\"134874f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Hydrogen sulfide in oxygen-deficient systems with risk of corrosion<\/h2><p>Hydrogen sulfide is a gas formed when bacteria break down sulfate in oxygen-poor environments. It has the characteristic smell of rotten eggs, but the smell is only part of the problem. <\/p><p>The gas is both toxic and highly corrosive. In plants, this means the breakdown of concrete and metal, while also affecting the working environment. The problem typically occurs in pressure pipes, tanks and other systems where residence time and load create the right conditions.  <\/p><h3>Nutriox as a preventive solution against hydrogen sulfide<\/h3><p>Nutriox works by changing the behavior of the bacteria. Instead of forming hydrogen sulfide, they use nitrate as an alternative oxygen source. Nutriox reduces the formation of hydrogen sulfide at the source, so that odor, corrosion and stress on pipes, tanks and pumps can be kept down. This makes Nutriox relevant where hydrogen sulfide needs to be limited in pressure pipes, tanks and pumping stations before odor and corrosion become operational problems.   <\/p><p>In operation, this means that nitrate-based solutions can be used specifically on the sections where residence time, temperature and organic load pose the greatest risk of hydrogen sulfide.<\/p><p>This provides a better opportunity to keep hydrogen sulfide down before gas formation affects installations, odors and the working environment.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4534558 cta elementor-mobile-align-justify elementor-widget-mobile__width-inherit elementor-tablet-align-left elementor-widget elementor-widget-button\" data-id=\"4534558\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/dankalk.dk\/en\/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\">Get a quote<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ab9e79f e-con-full e-flex e-con e-child\" data-id=\"ab9e79f\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\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-2143799 e-flex e-con-boxed e-con e-parent\" data-id=\"2143799\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-65e2ddc e-con-full e-flex e-con e-child\" data-id=\"65e2ddc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-fcf8c37 e-con-full e-flex e-con e-child\" data-id=\"fcf8c37\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-21a2ff9 elementor-widget elementor-widget-text-editor\" data-id=\"21a2ff9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Nutriox for pressure lines, tanks and high loads<\/h2><p>Nutriox is dosed at critical points such as pressure lines, pumping stations and tanks where long residence times and low oxygen can trigger hydrogen sulfide production. The location should be chosen based on residence times, flow and the points in the system where low oxygen poses the greatest risk of gas formation. <\/p><p>The dosage depends on flow, residence time, organic load, temperature and the specific operating conditions in the plant.<\/p><p>At Dankalk K\/S, we help determine the correct dosage so that the solution fits the specific operation. This provides a better basis for dosing Nutriox according to the actual load and avoiding unnecessary consumption. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d546e01 elementor-widget elementor-widget-text-editor\" data-id=\"d546e01\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>FAQ &#8211; Frequently Asked Questions about Hydrogen Sulfide<\/h3>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5e43d30 light elementor-widget elementor-widget-n-accordion\" data-id=\"5e43d30\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:200,&quot;sizes&quot;:[]},&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;one&quot;}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-9880\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-9880\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What is hydrogen sulfide? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><i aria-hidden=\"true\" class=\"far fa-minus\"><\/i><\/span>\n\t\t\t<span class='e-closed'><i aria-hidden=\"true\" class=\"far fa-plus\"><\/i><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-9880\" class=\"elementor-element elementor-element-d64ab80 e-con-full no-padding e-flex e-con e-child\" data-id=\"d64ab80\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-52950db elementor-widget elementor-widget-text-editor\" data-id=\"52950db\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tHydrogen sulfide is a toxic gas formed in oxygen-poor environments when bacteria break down sulfate. It is often found in wastewater systems, tanks, and biogas plants. \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-9881\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-9881\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Is hydrogen sulfide toxic? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><i aria-hidden=\"true\" class=\"far fa-minus\"><\/i><\/span>\n\t\t\t<span class='e-closed'><i aria-hidden=\"true\" class=\"far fa-plus\"><\/i><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-9881\" class=\"elementor-element elementor-element-c50cbd4 e-con-full no-padding e-flex e-con e-child\" data-id=\"c50cbd4\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-abc6deb elementor-widget elementor-widget-text-editor\" data-id=\"abc6deb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tYes, hydrogen sulfide is toxic and can affect both people and plants. Even low concentrations can cause discomfort, while higher levels pose a safety risk. \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-9882\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-9882\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What does hydrogen sulfide smell like? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><i aria-hidden=\"true\" class=\"far fa-minus\"><\/i><\/span>\n\t\t\t<span class='e-closed'><i aria-hidden=\"true\" class=\"far fa-plus\"><\/i><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-9882\" class=\"elementor-element elementor-element-1af90fb e-con-full no-padding e-flex e-con e-child\" data-id=\"1af90fb\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-30ef783 elementor-widget elementor-widget-text-editor\" data-id=\"30ef783\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tHydrogen sulfide smells like rotten eggs. The odor can be detected at low concentrations, but at higher levels the sense of smell can be affected. \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-9883\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-9883\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> How is hydrogen sulfide formed? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><i aria-hidden=\"true\" class=\"far fa-minus\"><\/i><\/span>\n\t\t\t<span class='e-closed'><i aria-hidden=\"true\" class=\"far fa-plus\"><\/i><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-9883\" class=\"elementor-element elementor-element-93a7a15 e-con-full no-padding e-flex e-con e-child\" data-id=\"93a7a15\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-85799e9 elementor-widget elementor-widget-text-editor\" data-id=\"85799e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tHydrogen sulfide is formed when bacteria use sulfate instead of oxygen in anoxic environments. This typically occurs in systems with long residence times and high loads. \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-9884\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-9884\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Is hydrogen sulfide an element? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><i aria-hidden=\"true\" class=\"far fa-minus\"><\/i><\/span>\n\t\t\t<span class='e-closed'><i aria-hidden=\"true\" class=\"far fa-plus\"><\/i><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-9884\" class=\"elementor-element elementor-element-e84c732 e-con-full no-padding e-flex e-con e-child\" data-id=\"e84c732\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-99dd1fc elementor-widget elementor-widget-text-editor\" data-id=\"99dd1fc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>No, hydrogen sulfide is a chemical compound consisting of sulfur and hydrogen. It occurs as a gas under normal conditions. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is hydrogen sulfide?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Hydrogen sulfide is a toxic gas formed in oxygen-poor environments when bacteria break down sulfate. It is often found in wastewater systems, tanks, and biogas plants.\"}},{\"@type\":\"Question\",\"name\":\"Is hydrogen sulfide toxic?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, hydrogen sulfide is toxic and can affect both people and plants. Even low concentrations can cause discomfort, while higher levels pose a safety risk.\"}},{\"@type\":\"Question\",\"name\":\"What does hydrogen sulfide smell like?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Hydrogen sulfide smells like rotten eggs. The odor can be detected at low concentrations, but at higher levels the sense of smell can be affected.\"}},{\"@type\":\"Question\",\"name\":\"How is hydrogen sulfide formed?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Hydrogen sulfide is formed when bacteria use sulfate instead of oxygen in anoxic environments. This typically occurs in systems with long residence times and high loads.\"}},{\"@type\":\"Question\",\"name\":\"Is hydrogen sulfide an element?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No, hydrogen sulfide is a chemical compound consisting of sulfur and hydrogen. It occurs as a gas under normal conditions.\"}}]}<\/script>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1a04f24 e-con-full e-flex e-con e-child\" data-id=\"1a04f24\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6b6ebc0 elementor-widget elementor-widget-text-editor\" data-id=\"6b6ebc0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>Hydrogen sulfide without corrosion &#8211; get a concrete assessment<\/h3><p>Hydrogen sulfide quickly becomes an expensive problem if not handled in time. Call <a href=\"tel:33687400\">+45 33 68 74 00<\/a> or write to <a href=\"mailto:dankalk@dankalk.dk\">dankalk@dankalk.dk<\/a> and get a solution that suits your plant and operation. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dee5082 cta e-transform elementor-widget elementor-widget-button\" data-id=\"dee5082\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_transform_scale_effect&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_scale_effect_laptop&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_scale_effect_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_scale_effect_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/dankalk.dk\/en\/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\">Contact us today<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\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>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Hydrogen sulfide and Nutriox for corrosion and odor-free operation Based on experience and documented nitrate solutions Do you have hydrogen sulfide in your plant, where odor, corrosion or operational problems are starting to affect everyday life? Hydrogen sulfide often occurs in closed systems where oxygen is low, and the consequences quickly become apparent in both &#8230; <a title=\"Hydrogen sulfide and Nutriox for corrosion and odor-free operation\" class=\"read-more\" href=\"https:\/\/dankalk.dk\/en\/hydrogen-sulfide-and-nutriox-for-corrosion-and-odor-free-operation\/\" aria-label=\"Read more about Hydrogen sulfide and Nutriox for corrosion and odor-free operation\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"class_list":["post-11422","page","type-page","status-publish"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nutriox and hydrogen sulfide control | Dankalk K\/S | Contact us<\/title>\n<meta name=\"description\" content=\"Do you have hydrogen sulfide in your system, where odor, corrosion or operational problems are starting to affect everyday life? 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