{"id":11439,"date":"2025-11-17T08:59:54","date_gmt":"2025-11-17T07:59:54","guid":{"rendered":"https:\/\/dankalk.dk\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/"},"modified":"2026-05-28T09:01:00","modified_gmt":"2026-05-28T07:01:00","slug":"ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification","status":"publish","type":"page","link":"https:\/\/dankalk.dk\/en\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/","title":{"rendered":"Ferric chloride, ferrous sulfate and iron powder for stable purification"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"11439\" class=\"elementor elementor-11439 elementor-10176\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2be03f5 white e-flex e-con-boxed e-con e-parent\" data-id=\"2be03f5\" 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;:10747,&quot;url&quot;:&quot;https:\\\/\\\/dankalk.dk\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/A50A5718-scaled.jpg&quot;},{&quot;id&quot;:10746,&quot;url&quot;:&quot;https:\\\/\\\/dankalk.dk\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/Copperas-warehousing-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-288ffc5 e-flex e-con-boxed e-con e-parent\" data-id=\"288ffc5\" 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-0afdb01 e-con-full e-flex e-con e-child\" data-id=\"0afdb01\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d072bbe elementor-widget elementor-widget-text-editor\" data-id=\"d072bbe\" 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>Ferric chloride, ferrous sulfate and iron powder for stable purification<\/h1><h2>Effective precipitation and control in wastewater and process water<\/h2><p>Do you have wastewater or process water where phosphorus, <a href=\"https:\/\/dankalk.dk\/en\/hydrogen-sulfide-and-nutriox-for-corrosion-and-odor-free-operation\/\">hydrogen sulfide<\/a> or metals affect operations? Ferric chloride, ferric sulfate and iron powder are used as iron-based precipitation and process chemicals when purification and stable operation must function without fluctuations. At Dankalk K\/S, we supply iron products to plants throughout Denmark, where correct chemistry is crucial for both operation and compliance with requirements.  <\/p><p>As <a href=\"\/\">a lime plant,<\/a> we work with both municipal and industrial plants, where the composition, dosage and production of the chemistry have a direct impact on the result. Incorrect choice of ferric chloride, ferric sulfate or iron powder can result in too high a dosage, poorer phosphorus precipitation, more sludge and greater strain on process water and equipment. <\/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-c6c910c light elementor-widget elementor-widget-n-accordion\" data-id=\"c6c910c\" 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-2080\" 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-2080\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 5 advantages when choosing our iron products   <\/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-2080\" class=\"elementor-element elementor-element-c56a16f e-con-full no-padding e-flex e-con e-child\" data-id=\"c56a16f\" 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-d544f56 elementor-widget elementor-widget-text-editor\" data-id=\"d544f56\" 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>If you have a plant where ferric chloride, ferric sulfate or iron powder must function stably without fluctuations in the purification, the choice of product and dosage is crucial for both operation and results. At Dankalk K\/S, we supply iron products that are adapted to specific requirements in wastewater and process water, so you avoid inefficient precipitation and unnecessary operational problems. <\/p><ul><li>Ferric chloride, ferrous sulfate and iron powder of uniform quality from the same manufacturer<\/li><li>Over 100 years of experience with chemistry and raw materials for technical plants<\/li><li>Products for phosphorus precipitation, hydrogen sulfide control and metal precipitation in practice<\/li><li>Advice on correct dosage so that the chemistry matches load and flow<\/li><li>Supply of iron products that function stably in both wastewater and process water<\/li><\/ul><p>When ferric chloride, ferric sulfate or iron powder are selected based on load, flow and process requirements, the plant has a better basis for lower residual phosphorus, less hydrogen sulfide and more uniform purification. This makes the dosage easier to control and reduces the risk of the chemistry creating more sludge or poorer precipitation than necessary. <\/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-95ae769 cta e-transform elementor-widget elementor-widget-button\" data-id=\"95ae769\" 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-9f937bb e-con-full e-flex e-con e-child\" data-id=\"9f937bb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-c3d5679 e-con-full dark e-flex e-con e-child\" data-id=\"c3d5679\" 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-698aa86 e-con-full e-flex e-con e-child\" data-id=\"698aa86\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-197a096 e-con-full e-flex e-con e-child\" data-id=\"197a096\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dd3acd5 elementor-widget elementor-widget-text-editor\" data-id=\"dd3acd5\" 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-9d2132b e-con-full e-flex e-con e-child\" data-id=\"9d2132b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ace089d 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=\"ace089d\" 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-26bdd82 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"26bdd82\" 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-afdeb64 elementor-widget elementor-widget-wp-widget-forminator_widget\" data-id=\"afdeb64\" 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-11481\" class=\"forminator-custom-form forminator-custom-form-11481\" method=\"post\" data-forminator-render=\"0\" data-uid=\"6a187d0b100ff\"><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-eb74437 light e-flex e-con-boxed e-con e-parent\" data-id=\"eb74437\" 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-5bdc2b6 e-con-full e-flex e-con e-child\" data-id=\"5bdc2b6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-0f08657 e-con-full e-flex e-con e-child\" data-id=\"0f08657\" 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-9632638 elementor-widget elementor-widget-text-editor\" data-id=\"9632638\" 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>Ferric chloride for phosphorus precipitation and hydrogen sulfide control<\/h2><p>Ferric chloride is used as a coagulant in wastewater, where it binds phosphorus and forms solid compounds that are removed with the sludge. This makes the product suitable for plants with requirements for low phosphorus content in the effluent. <\/p><p>At the same time, ferric chloride is used to bind hydrogen sulfide, where it reacts chemically to form iron sulfide. This reduces odor and protects installations against corrosion. Ferric chloride is often chosen when the plant needs stable phosphorus precipitation, low residual phosphorus and chemical binding of hydrogen sulfide in wastewater. The high iron content can result in lower dosage, and the product can be combined with polymers when flocculation is to be strengthened.   <\/p><p>This makes ferric chloride relevant in plants where low residual phosphorus, hydrogen sulfide control and stable sludge quality have a direct impact on operations.<\/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-ae5a046 cta elementor-mobile-align-justify elementor-widget-mobile__width-inherit elementor-tablet-align-left elementor-widget elementor-widget-button\" data-id=\"ae5a046\" 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-fbed4f8 e-con-full e-flex e-con e-child\" data-id=\"fbed4f8\" 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-9598aa5 e-flex e-con-boxed e-con e-parent\" data-id=\"9598aa5\" 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-851092d e-con-full e-flex e-con e-child\" data-id=\"851092d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-374efe4 e-con-full e-flex e-con e-child\" data-id=\"374efe4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2f4eee5 elementor-widget elementor-widget-text-editor\" data-id=\"2f4eee5\" 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>Ferrous sulfate as an alternative for special requirements<\/h2><p>Ferric sulfate is used for the same purposes as ferric chloride, but is typically chosen where chloride loading or material impact needs to be limited. This makes it relevant in process water and plants with specific composition requirements. <\/p><p>When added, iron sulfate binds phosphorus and stabilizes pH, providing a more controlled process in certain types of wastewater.<\/p><p>Ferric sulfate is particularly relevant in plants where chloride loading needs to be kept low, or where materials and process water require a more gentle chemical solution. It may also be a better choice in operations where pH control and stable precipitation need to be closely linked. <\/p><p>The choice between ferric chloride and ferric sulfate should be assessed based on phosphorus level, chloride load, pH, temperature and sludge quality requirements.<\/p><h3>Iron powder for flexible bonding and process control<\/h3><p>Iron powder is used in biological and chemical processes, where it binds sulfur compounds and metals. It is used, among other things, in <a href=\"https:\/\/dankalk.dk\/en\/activated-carbon-for-biogas-with-lower-wear-on-the-plant\/\">biogas<\/a> , wastewater and industrial plants. <\/p><p>In practice, iron powder reacts with hydrogen sulfide to form stable compounds, which reduces both odor and wear on equipment. It is also used for metal precipitation in process water. <\/p><p>Iron powder can reduce hydrogen sulfide and odors, protect engines and installations, and bind metals and phosphorus in process water. This makes the product relevant in plants where local treatment, flexible dosing, and rapid adaptation are of greater value than a standard solution. <\/p><h3>Iron product for phosphorus, hydrogen sulfide and metals<\/h3><p>Ferric chloride is typically used for heavy phosphorus precipitation and hydrogen sulfide control, while ferric sulfate is chosen when lower chloride loading and stable pH are required. Iron powder is relevant for local binding of sulfur compounds and metals in plants where the dosage must be more closely matched to the loading. <\/p><p>At Dankalk K\/S, we evaluate product selection based on phosphorus levels, hydrogen sulfide, pH, chloride load and the composition of the process water. This makes it easier to avoid overdosing, excessive sludge production and a chemical solution that does not match the plant. <\/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<div class=\"elementor-element elementor-element-c0b5ea7 e-con-full e-flex e-con e-child\" data-id=\"c0b5ea7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f04aba5 elementor-widget elementor-widget-text-editor\" data-id=\"f04aba5\" 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>Applications in wastewater and industry<\/h3><p>Iron products are used in many types of plants where the requirements for purification and process control are different. In wastewater, they are used for phosphorus precipitation, sludge stabilization and reduction of undesirable substances. <\/p><p>In industrial plants, iron-based precipitation and process chemicals are used to purify process water, where metals and nutrients must be removed before discharge.<\/p><p>In biogas and energy, iron products are used to control sulfur compounds and improve residual products. The combination of products can in some cases provide better effects than individual solutions. <\/p><h3>FAQ &#8211; Frequently asked questions about ferric chloride, ferrous sulfate and iron powder<\/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-622464f light elementor-widget elementor-widget-n-accordion\" data-id=\"622464f\" 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-1020\" 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-1020\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What is ferric chloride? <\/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-1020\" class=\"elementor-element elementor-element-9ba1e93 e-con-full no-padding e-flex e-con e-child\" data-id=\"9ba1e93\" 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-0c0991e elementor-widget elementor-widget-text-editor\" data-id=\"0c0991e\" 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\tFerric chloride is a liquid precipitation chemical used to remove phosphorus and bind hydrogen sulfide in wastewater. It forms solid compounds that are removed with the sludge. \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-1021\" 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-1021\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What is ferrous sulfate? <\/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-1021\" class=\"elementor-element elementor-element-4997d18 e-con-full no-padding e-flex e-con e-child\" data-id=\"4997d18\" 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-4ac310c elementor-widget elementor-widget-text-editor\" data-id=\"4ac310c\" 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\tFerric sulfate is an iron-based coagulant used for phosphorus precipitation and pH regulation. It is often chosen where low chloride loading is desired in the process.   \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-1022\" 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-1022\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What is the difference between ferric chloride and ferric sulfate? <\/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-1022\" class=\"elementor-element elementor-element-d8ad18a e-con-full no-padding e-flex e-con e-child\" data-id=\"d8ad18a\" 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-6aa17b2 elementor-widget elementor-widget-text-editor\" data-id=\"6aa17b2\" 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\tFerric chloride has a stronger effect and is often used at high loads, while ferric sulfate is more gentle and is used for special process requirements. The choice depends on the plant and operation. \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-1023\" 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-1023\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> When do you use iron powder? <\/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-1023\" class=\"elementor-element elementor-element-6dc82f1 e-con-full no-padding e-flex e-con e-child\" data-id=\"6dc82f1\" 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-29ac6ea elementor-widget elementor-widget-text-editor\" data-id=\"29ac6ea\" 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>Iron powder is used to bind hydrogen sulfide and metals in biogas and process water, among other things. It is often used where flexible dosing and local treatment are needed. <\/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 ferric chloride?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Ferric chloride is a liquid precipitation chemical used to remove phosphorus and bind hydrogen sulfide in wastewater. It forms solid compounds that are removed with the sludge.\"}},{\"@type\":\"Question\",\"name\":\"What is ferrous sulfate?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Ferric sulfate is an iron-based coagulant used for phosphorus precipitation and pH regulation. It is often chosen where low chloride loading is desired in the process.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between ferric chloride and ferric sulfate?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Ferric chloride has a stronger effect and is often used at high loads, while ferric sulfate is more gentle and is used for special process requirements. The choice depends on the plant and operation.\"}},{\"@type\":\"Question\",\"name\":\"When do you use iron powder?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Iron powder is used to bind hydrogen sulfide and metals in biogas and process water, among other things. It is often used where flexible dosing and local treatment are needed.\"}}]}<\/script>\n\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-2931e2f elementor-widget elementor-widget-text-editor\" data-id=\"2931e2f\" 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>Iron chemistry with fewer adjustments &#8211; get a quote<\/h3><p>Iron products affect both operation, price and environmental impact in your plant. 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 process and your load before the problems grow.<\/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-d5a52a1 cta elementor-mobile-align-justify elementor-widget-mobile__width-inherit elementor-tablet-align-left elementor-widget elementor-widget-button\" data-id=\"d5a52a1\" 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\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>Ferric chloride, ferrous sulfate and iron powder for stable purification Effective precipitation and control in wastewater and process water Do you have wastewater or process water where phosphorus, hydrogen sulfide or metals affect operations? Ferric chloride, ferric sulfate and iron powder are used as iron-based precipitation and process chemicals when purification and stable operation must &#8230; <a title=\"Ferric chloride, ferrous sulfate and iron powder for stable purification\" class=\"read-more\" href=\"https:\/\/dankalk.dk\/en\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/\" aria-label=\"Read more about Ferric chloride, ferrous sulfate and iron powder for stable purification\">Read more<\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"class_list":["post-11439","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>Ferric chloride, ferrous sulfate &amp; iron powder for wastewater treatment<\/title>\n<meta name=\"description\" content=\"Do you need wastewater treatment? Ferric chloride, ferric sulfate are supplied by Dankalk throughout Denmark. Contact us today\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dankalk.dk\/en\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ferric chloride, ferrous sulfate &amp; iron powder for wastewater treatment\" \/>\n<meta property=\"og:description\" content=\"Do you need wastewater treatment? Ferric chloride, ferric sulfate are supplied by Dankalk throughout Denmark. Contact us today\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dankalk.dk\/en\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/\" \/>\n<meta property=\"og:site_name\" content=\"DANKALK K\/S\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-28T07:01:00+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\\\/\",\"url\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\\\/\",\"name\":\"Ferric chloride, ferrous sulfate & iron powder for wastewater treatment\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/#website\"},\"datePublished\":\"2025-11-17T07:59:54+00:00\",\"dateModified\":\"2026-05-28T07:01:00+00:00\",\"description\":\"Do you need wastewater treatment? Ferric chloride, ferric sulfate are supplied by Dankalk throughout Denmark. Contact us today\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/dankalk.dk\\\/en\\\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Forside\",\"item\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Ferric chloride, ferrous sulfate and iron powder for stable purification\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/\",\"name\":\"DANKALK K\\\/S\",\"description\":\"Kalk fra dansk kalkv\u00e6rk med over 100 \u00e5rs erfaring\",\"publisher\":{\"@id\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/#organization\",\"name\":\"DANKALK K\\\/S\",\"url\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/dankalk.dk\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/Dankalk_160x.png\",\"contentUrl\":\"https:\\\/\\\/dankalk.dk\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/Dankalk_160x.png\",\"width\":524,\"height\":100,\"caption\":\"DANKALK K\\\/S\"},\"image\":{\"@id\":\"https:\\\/\\\/dankalk.dk\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Ferric chloride, ferrous sulfate & iron powder for wastewater treatment","description":"Do you need wastewater treatment? Ferric chloride, ferric sulfate are supplied by Dankalk throughout Denmark. Contact us today","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/dankalk.dk\/en\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/","og_locale":"en_US","og_type":"article","og_title":"Ferric chloride, ferrous sulfate & iron powder for wastewater treatment","og_description":"Do you need wastewater treatment? Ferric chloride, ferric sulfate are supplied by Dankalk throughout Denmark. Contact us today","og_url":"https:\/\/dankalk.dk\/en\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/","og_site_name":"DANKALK K\/S","article_modified_time":"2026-05-28T07:01:00+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"7 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/dankalk.dk\/en\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/","url":"https:\/\/dankalk.dk\/en\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/","name":"Ferric chloride, ferrous sulfate & iron powder for wastewater treatment","isPartOf":{"@id":"https:\/\/dankalk.dk\/en\/#website"},"datePublished":"2025-11-17T07:59:54+00:00","dateModified":"2026-05-28T07:01:00+00:00","description":"Do you need wastewater treatment? Ferric chloride, ferric sulfate are supplied by Dankalk throughout Denmark. Contact us today","breadcrumb":{"@id":"https:\/\/dankalk.dk\/en\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/dankalk.dk\/en\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/dankalk.dk\/en\/ferric-chloride-ferrous-sulfate-and-iron-powder-for-stable-purification\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Forside","item":"https:\/\/dankalk.dk\/en\/"},{"@type":"ListItem","position":2,"name":"Ferric chloride, ferrous sulfate and iron powder for stable purification"}]},{"@type":"WebSite","@id":"https:\/\/dankalk.dk\/en\/#website","url":"https:\/\/dankalk.dk\/en\/","name":"DANKALK K\/S","description":"Kalk fra dansk kalkv\u00e6rk med over 100 \u00e5rs erfaring","publisher":{"@id":"https:\/\/dankalk.dk\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/dankalk.dk\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/dankalk.dk\/en\/#organization","name":"DANKALK K\/S","url":"https:\/\/dankalk.dk\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/dankalk.dk\/en\/#\/schema\/logo\/image\/","url":"https:\/\/dankalk.dk\/wp-content\/uploads\/2025\/11\/Dankalk_160x.png","contentUrl":"https:\/\/dankalk.dk\/wp-content\/uploads\/2025\/11\/Dankalk_160x.png","width":524,"height":100,"caption":"DANKALK K\/S"},"image":{"@id":"https:\/\/dankalk.dk\/en\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/dankalk.dk\/en\/wp-json\/wp\/v2\/pages\/11439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dankalk.dk\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/dankalk.dk\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/dankalk.dk\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/dankalk.dk\/en\/wp-json\/wp\/v2\/comments?post=11439"}],"version-history":[{"count":8,"href":"https:\/\/dankalk.dk\/en\/wp-json\/wp\/v2\/pages\/11439\/revisions"}],"predecessor-version":[{"id":11518,"href":"https:\/\/dankalk.dk\/en\/wp-json\/wp\/v2\/pages\/11439\/revisions\/11518"}],"wp:attachment":[{"href":"https:\/\/dankalk.dk\/en\/wp-json\/wp\/v2\/media?parent=11439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dankalk.dk\/en\/wp-json\/wp\/v2\/categories?post=11439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}