{"id":9033,"date":"2026-05-06T08:00:00","date_gmt":"2026-05-06T08:00:00","guid":{"rendered":"https:\/\/hoachatlocthien.com\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc\/"},"modified":"2026-05-20T10:10:53","modified_gmt":"2026-05-20T03:10:53","slug":"tim-hieu-phen-sat-2-trong-xu-ly-nuoc-2","status":"publish","type":"post","link":"https:\/\/hoachatlocthien.com\/en\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc-2","title":{"rendered":"T\u00ecm Hi\u1ec3u Ph\u00e8n S\u1eaft 2 Trong X\u1eed L\u00fd N\u01b0\u1edbc: C\u01a1 Ch\u1ebf &#038; Li\u1ec1u D\u00f9ng"},"content":{"rendered":"<article>\n<header class=\"hero\">\n<div class=\"kicker\">Ph\u00e8n s\u1eaft 2 x\u1eed l\u00fd n\u01b0\u1edbc<\/div>\n<h1>T\u00ecm Hi\u1ec3u Ph\u00e8n S\u1eaft 2 Trong X\u1eed L\u00fd N\u01b0\u1edbc: C\u01a1 Ch\u1ebf &#038; Li\u1ec1u D\u00f9ng<\/h1>\n<p class=\"meta\">Bien soan boi doi ngu ky thuat <strong>Hoa Chat Loc Thien<\/strong>.<\/p>\n<p><strong>Ph\u00e8n s\u1eaft 2 (FeSO4\u00b77H2O)<\/strong> l\u00e0 h\u00f3a ch\u1ea5t kinh t\u1ebf d\u00f9ng trong x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i, \u0111\u1eb7c bi\u1ec7t cho c\u00e1c h\u1ec7 c\u1ea7n kh\u1eed Cr6+, ki\u1ec3m so\u00e1t H2S, ho\u1eb7c keo t\u1ee5 \u1edf pH trung t\u00ednh \u2013 ki\u1ec1m nh\u1eb9.<\/p>\n<p class=\"note\">Noi dung tham khao, vui long doi chieu MSDS.<\/p>\n<\/header>\n<figure><img decoding=\"async\" class=\"thumb lazyload\" data-src=\"https:\/\/hoachatlocthien.com\/wp-content\/uploads\/2025\/03\/feso4.webp\" alt=\"feso4\" width=\"900\" height=\"500\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 900px; --smush-placeholder-aspect-ratio: 900\/500;\"><figcaption class=\"meta\" style=\"text-align:center\">feso4<\/figcaption><\/figure>\n<div class=\"tag-list\"><span>ph\u00e8n s\u1eaft 2 x\u1eed l\u00fd n\u01b0\u1edbc<\/span><span>FeSO4 x\u1eed l\u00fd n\u01b0\u1edbc<\/span><span>kh\u1eed Cr6+<\/span><span>ki\u1ec3m so\u00e1t H2S<\/span><span>keo t\u1ee5 FeSO4<\/span><\/div>\n<section id=\"co-che\">\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_72 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i dung<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/hoachatlocthien.com\/en\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc-2\/#1_Co_che_hoat_dong_cua_phen_sat_2_trong_xu_ly_nuoc\" title=\"1. C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ph\u00e8n s\u1eaft 2 trong x\u1eed l\u00fd n\u01b0\u1edbc\">1. C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ph\u00e8n s\u1eaft 2 trong x\u1eed l\u00fd n\u01b0\u1edbc<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/hoachatlocthien.com\/en\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc-2\/#11_Khu_Cr6_thanh_Cr3\" title=\"1.1. Kh\u1eed Cr6+ th\u00e0nh Cr3+\">1.1. Kh\u1eed Cr6+ th\u00e0nh Cr3+<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/hoachatlocthien.com\/en\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc-2\/#12_Ket_tua_sulfide_kiem_soat_H2S\" title=\"1.2. K\u1ebft t\u1ee7a sulfide ki\u1ec3m so\u00e1t H2S\">1.2. K\u1ebft t\u1ee7a sulfide ki\u1ec3m so\u00e1t H2S<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/hoachatlocthien.com\/en\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc-2\/#13_Keo_tu_thong_thuong\" title=\"1.3. Keo t\u1ee5 th\u00f4ng th\u01b0\u1eddng\">1.3. Keo t\u1ee5 th\u00f4ng th\u01b0\u1eddng<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/hoachatlocthien.com\/en\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc-2\/#2_Lieu_dung_phen_sat_2_cho_xu_ly_nuoc\" title=\"2. Li\u1ec1u d\u00f9ng ph\u00e8n s\u1eaft 2 cho x\u1eed l\u00fd n\u01b0\u1edbc\">2. Li\u1ec1u d\u00f9ng ph\u00e8n s\u1eaft 2 cho x\u1eed l\u00fd n\u01b0\u1edbc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/hoachatlocthien.com\/en\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc-2\/#3_Uu_nhuoc_diem_so_voi_FeCl3_va_PAC\" title=\"3. \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m so v\u1edbi FeCl3 v\u00e0 PAC\">3. \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m so v\u1edbi FeCl3 v\u00e0 PAC<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/hoachatlocthien.com\/en\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc-2\/#4_Luu_y_van_hanh\" title=\"4. L\u01b0u \u00fd v\u1eadn h\u00e0nh\">4. L\u01b0u \u00fd v\u1eadn h\u00e0nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/hoachatlocthien.com\/en\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc-2\/#Lien_he_Hoa_Chat_Loc_Thien\" title=\"Lien he Hoa Chat Loc Thien\">Lien he Hoa Chat Loc Thien<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/hoachatlocthien.com\/en\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc-2\/#FAQ\" title=\"FAQ\">FAQ<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"1_Co_che_hoat_dong_cua_phen_sat_2_trong_xu_ly_nuoc\"><\/span>1. C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ph\u00e8n s\u1eaft 2 trong x\u1eed l\u00fd n\u01b0\u1edbc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"11_Khu_Cr6_thanh_Cr3\"><\/span>1.1. Kh\u1eed Cr6+ th\u00e0nh Cr3+<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>6FeSO4 + Cr2O7^2- + 7H2SO4 \u2192 3Fe2(SO4)3 + Cr2(SO4)3 + 7H2O. Sau \u0111\u00f3 Cr3+ \u0111\u01b0\u1ee3c k\u1ebft t\u1ee7a b\u1eb1ng v\u00f4i\/NaOH th\u00e0nh Cr(OH)3 kh\u00f4ng tan.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"12_Ket_tua_sulfide_kiem_soat_H2S\"><\/span>1.2. K\u1ebft t\u1ee7a sulfide ki\u1ec3m so\u00e1t H2S<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Fe2+ + S^2- \u2192 FeS\u2193 (\u0111en, kh\u00f4ng tan). Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y hi\u1ec7u qu\u1ea3 cho n\u01b0\u1edbc th\u1ea3i c\u00f3 sulfide g\u00e2y m\u00f9i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"13_Keo_tu_thong_thuong\"><\/span>1.3. Keo t\u1ee5 th\u00f4ng th\u01b0\u1eddng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Fe2+ trong m\u00f4i tr\u01b0\u1eddng c\u00f3 oxy ho\u1eb7c oxy h\u00f3a nh\u1eb9 chuy\u1ec3n th\u00e0nh Fe3+, sau \u0111\u00f3 t\u1ea1o Fe(OH)3 keo t\u1ee5 t\u01b0\u01a1ng t\u1ef1 FeCl3.<\/p>\n<\/section>\n<section id=\"lieu-dung\">\n<h2><span class=\"ez-toc-section\" id=\"2_Lieu_dung_phen_sat_2_cho_xu_ly_nuoc\"><\/span>2. Li\u1ec1u d\u00f9ng ph\u00e8n s\u1eaft 2 cho x\u1eed l\u00fd n\u01b0\u1edbc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table class='specs'>\n<tr>\n<th>M\u1ee5c \u0111\u00edch<\/th>\n<th>Li\u1ec1u FeSO4\u00b77H2O<\/th>\n<th>pH t\u1ed1i \u01b0u<\/th>\n<\/tr>\n<tr>\n<td>Kh\u1eed Cr6+<\/td>\n<td>4\u201310 g\/g Cr6+<\/td>\n<td>2\u20133 (axit h\u00f3a b\u1eb1ng H2SO4)<\/td>\n<\/tr>\n<tr>\n<td>Ki\u1ec3m so\u00e1t H2S<\/td>\n<td>2\u20135 g\/g sulfide<\/td>\n<td>6\u20138<\/td>\n<\/tr>\n<tr>\n<td>Keo t\u1ee5 n\u01b0\u1edbc th\u1ea3i<\/td>\n<td>50\u2013500 mg\/L<\/td>\n<td>5,5\u20138,5<\/td>\n<\/tr>\n<\/table>\n<\/section>\n<figure style=\"margin:18px 0;text-align:center;\"><img decoding=\"async\" class=\"thumb lazyload\" data-src=\"https:\/\/hoachatlocthien.com\/wp-content\/uploads\/2025\/01\/FeSO4-la-gi.webp\" alt=\"FeSO4 l\u00e0 g\u00ec\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\"><figcaption class=\"meta\">FeSO4 l\u00e0 g\u00ec<\/figcaption><\/figure>\n<section id=\"uu-nhuoc\">\n<h2><span class=\"ez-toc-section\" id=\"3_Uu_nhuoc_diem_so_voi_FeCl3_va_PAC\"><\/span>3. \u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m so v\u1edbi FeCl3 v\u00e0 PAC<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><strong>\u01afu \u0111i\u1ec3m<\/strong>: gi\u00e1 r\u1ebb, d\u1ec5 v\u1eadn chuy\u1ec3n d\u1ea1ng r\u1eafn, \u0111a n\u0103ng (kh\u1eed + keo t\u1ee5).<\/li>\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/strong>: c\u1ea7n th\u1eddi gian ph\u1ea3n \u1ee9ng (Fe2+ ph\u1ea3i oxy h\u00f3a l\u00ean Fe3+), b\u00f9n nhi\u1ec1u h\u01a1n PAC, c\u00f3 th\u1ec3 l\u00e0m n\u01b0\u1edbc tho\u00e1ng \u1ed1 v\u00e0ng n\u1ebfu d\u01b0.<\/li>\n<\/ul>\n<\/section>\n<section id=\"luu-y\">\n<h2><span class=\"ez-toc-section\" id=\"4_Luu_y_van_hanh\"><\/span>4. L\u01b0u \u00fd v\u1eadn h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Pha dung d\u1ecbch d\u00f9ng trong ng\u00e0y, kh\u00f4ng tr\u1eef d\u00e0i.<\/li>\n<li>B\u1ed3n pha PE\/HDPE; tr\u00e1nh th\u00e9p cacbon.<\/li>\n<li>Theo d\u00f5i pH li\u00ean t\u1ee5c \u2013 axit d\u01b0 nhi\u1ec1u khi kh\u1eed Cr6+.<\/li>\n<li>B\u00f9n FeS ch\u1ee9a l\u01b0u hu\u1ef3nh \u2013 c\u1ea7n x\u1eed l\u00fd \u0111\u1eb7c bi\u1ec7t, kh\u00f4ng tr\u1ed9n v\u00e0o b\u00f9n sinh h\u1ecdc.<\/li>\n<\/ul>\n<\/section>\n<section id=\"lien-he\">\n<h2><span class=\"ez-toc-section\" id=\"Lien_he_Hoa_Chat_Loc_Thien\"><\/span>Lien he Hoa Chat Loc Thien<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Doi ngu ky thuat <strong>Hoa Chat Loc Thien<\/strong> san sang ho tro doanh nghiep.<\/p>\n<ul>\n<li>Hotline: <a href=\"tel:0979891929\">0979 89 1929<\/a><\/li>\n<li>Email: <a href=\"mailto:locthien@locthien.vn\">locthien@locthien.vn<\/a><\/li>\n<li>Website: <a href=\"https:\/\/hoachatlocthien.com\/\">hoachatlocthien.com\/<\/a><\/li>\n<\/ul>\n<\/section>\n<section id=\"faq\" class=\"faq\">\n<h2><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li><strong>Ph\u00e8n s\u1eaft 2 d\u00f9ng trong x\u1eed l\u00fd n\u01b0\u1edbc c\u00f3 c\u00f4ng d\u1ee5ng g\u00ec?<\/strong><br \/>Kh\u1eed Cr6+ th\u00e0nh Cr3+ trong n\u01b0\u1edbc th\u1ea3i m\u1ea1 \u0111i\u1ec7n, k\u1ebft t\u1ee7a sulfide ki\u1ec3m so\u00e1t m\u00f9i H2S v\u00e0 keo t\u1ee5 th\u00f4ng th\u01b0\u1eddng \u1edf pH trung t\u00ednh.<\/li>\n<li><strong>Li\u1ec1u d\u00f9ng ph\u00e8n s\u1eaft 2 \u0111\u1ec3 kh\u1eed Cr6+ l\u00e0 bao nhi\u00eau?<\/strong><br \/>Kho\u1ea3ng 4\u201310 g FeSO4\u00b77H2O cho m\u1ed7i gram Cr6+, \u1edf pH 2\u20133 (axit h\u00f3a b\u1eb1ng H2SO4) \u0111\u1ec3 ph\u1ea3n \u1ee9ng ho\u00e0n to\u00e0n. Sau \u0111\u00f3 n\u00e2ng pH b\u1eb1ng v\u00f4i\/NaOH \u0111\u1ec3 k\u1ebft t\u1ee7a Cr3+.<\/li>\n<li><strong>Ph\u00e8n s\u1eaft 2 c\u00f3 kh\u00e1c ph\u00e8n nh\u00f4m kh\u00f4ng?<\/strong><br \/>Kh\u00e1c. Ph\u00e8n nh\u00f4m (Al2(SO4)3) keo t\u1ee5 t\u1ed1t \u1edf pH 6\u20137,5, kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng kh\u1eed. Ph\u00e8n s\u1eaft 2 \u0111a n\u0103ng h\u01a1n nh\u01b0ng t\u1ea1o b\u00f9n nhi\u1ec1u v\u00e0 c\u00f3 th\u1ec3 l\u00e0m n\u01b0\u1edbc \u1ed1 v\u00e0ng n\u1ebfu d\u01b0.<\/li>\n<li><strong>Pha ph\u00e8n s\u1eaft 2 l\u01b0u \u0111\u01b0\u1ee3c bao l\u00e2u?<\/strong><br \/>Dung d\u1ecbch ph\u00e8n s\u1eaft 2 n\u00ean d\u00f9ng trong ng\u00e0y v\u00ec Fe2+ d\u1ec5 b\u1ecb oxy h\u00f3a th\u00e0nh Fe3+, l\u00e0m thay \u0111\u1ed5i t\u00ednh ch\u1ea5t h\u00f3a ch\u1ea5t v\u00e0 gi\u1ea3m hi\u1ec7u qu\u1ea3 kh\u1eed.<\/li>\n<li><strong>Mua ph\u00e8n s\u1eaft 2 ch\u1ea5t l\u01b0\u1ee3ng t\u1ea1i L\u1ed9c Thi\u00ean c\u00f3 h\u1ed7 tr\u1ee3 g\u00ec?<\/strong><br \/>L\u1ed9c Thi\u00ean cung c\u1ea5p FeSO4\u00b77H2O bao 25 kg v\u1edbi COA, MSDS, h\u00e0m l\u01b0\u1ee3ng Fe \u1ed5n \u0111\u1ecbnh, k\u00e8m t\u01b0 v\u1ea5n li\u1ec1u d\u00f9ng v\u00e0 Jar test mi\u1ec5n ph\u00ed cho kh\u00e1ch KCN.<\/li>\n<\/ol>\n<\/section>\n<\/article>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Organization\",\n      \"@id\": \"https:\/\/hoachatlocthien.com\/#org\",\n      \"name\": \"Hoa Chat Loc Thien\",\n      \"url\": \"https:\/\/hoachatlocthien.com\/\",\n      \"logo\": \"https:\/\/hoachatlocthien.com\/wp-content\/uploads\/2025\/02\/logo-locthien.png\",\n      \"telephone\": \"+84979891929\",\n      \"email\": \"locthien@locthien.vn\"\n    },\n    {\n      \"@type\": \"BreadcrumbList\",\n      \"@id\": \"https:\/\/hoachatlocthien.com\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc\/#breadcrumb\",\n      \"itemListElement\": [\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 1,\n          \"name\": \"Trang chu\",\n          \"item\": \"https:\/\/hoachatlocthien.com\/\"\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 2,\n          \"name\": \"H\u00f3a ch\u1ea5t x\u1eed l\u00fd n\u01b0\u1edbc\",\n          \"item\": \"https:\/\/hoachatlocthien.com\/kien-thuc-hoa-chat\/\"\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 3,\n          \"name\": \"T\u00ecm Hi\u1ec3u Ph\u00e8n S\u1eaft 2 Trong X\u1eed L\u00fd N\u01b0\u1edbc: C\u01a1 Ch\u1ebf & Li\u1ec1u D\u00f9ng\",\n          \"item\": \"https:\/\/hoachatlocthien.com\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc\/\"\n        }\n      ]\n    },\n    {\n      \"@type\": \"Article\",\n      \"@id\": \"https:\/\/hoachatlocthien.com\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc\/#article\",\n      \"headline\": \"T\u00ecm Hi\u1ec3u Ph\u00e8n S\u1eaft 2 Trong X\u1eed L\u00fd N\u01b0\u1edbc: C\u01a1 Ch\u1ebf & Li\u1ec1u D\u00f9ng\",\n      \"description\": \"Ph\u00e8n s\u1eaft 2 (FeSO4\u00b77H2O) trong x\u1eed l\u00fd n\u01b0\u1edbc c\u00f3 c\u01a1 ch\u1ebf kh\u1eed Cr6+, ki\u1ec3m so\u00e1t H2S v\u00e0 keo t\u1ee5. T\u1ed5ng h\u1ee3p li\u1ec1u d\u00f9ng, \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 l\u01b0u \u00fd v\u1eadn h\u00e0nh.\",\n      \"image\": \"https:\/\/hoachatlocthien.com\/wp-content\/uploads\/2025\/03\/feso4.webp\",\n      \"datePublished\": \"2026-05-06T08:00:00+07:00\",\n      \"dateModified\": \"2026-05-06T08:00:00+07:00\",\n      \"author\": {\n        \"@type\": \"Organization\",\n        \"@id\": \"https:\/\/hoachatlocthien.com\/#org\",\n        \"name\": \"Hoa Chat Loc Thien\"\n      },\n      \"publisher\": {\n        \"@type\": \"Organization\",\n        \"@id\": \"https:\/\/hoachatlocthien.com\/#org\"\n      },\n      \"mainEntityOfPage\": {\n        \"@type\": \"WebPage\",\n        \"@id\": \"https:\/\/hoachatlocthien.com\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc\/\"\n      },\n      \"articleSection\": [\n        \"H\u00f3a ch\u1ea5t x\u1eed l\u00fd n\u01b0\u1edbc\",\n        \"Ph\u00e8n s\u1eaft\"\n      ],\n      \"keywords\": [\n        \"ph\u00e8n s\u1eaft 2 x\u1eed l\u00fd n\u01b0\u1edbc\",\n        \"FeSO4 x\u1eed l\u00fd n\u01b0\u1edbc\",\n        \"kh\u1eed Cr6+\",\n        \"ki\u1ec3m so\u00e1t H2S\",\n        \"keo t\u1ee5 FeSO4\"\n      ]\n    },\n    {\n      \"@type\": \"FAQPage\",\n      \"@id\": \"https:\/\/hoachatlocthien.com\/tim-hieu-phen-sat-2-trong-xu-ly-nuoc\/#faq-schema\",\n      \"mainEntity\": [\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Ph\u00e8n s\u1eaft 2 d\u00f9ng trong x\u1eed l\u00fd n\u01b0\u1edbc c\u00f3 c\u00f4ng d\u1ee5ng g\u00ec?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Kh\u1eed Cr6+ th\u00e0nh Cr3+ trong n\u01b0\u1edbc th\u1ea3i m\u1ea1 \u0111i\u1ec7n, k\u1ebft t\u1ee7a sulfide ki\u1ec3m so\u00e1t m\u00f9i H2S v\u00e0 keo t\u1ee5 th\u00f4ng th\u01b0\u1eddng \u1edf pH trung t\u00ednh.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Li\u1ec1u d\u00f9ng ph\u00e8n s\u1eaft 2 \u0111\u1ec3 kh\u1eed Cr6+ l\u00e0 bao nhi\u00eau?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Kho\u1ea3ng 4\u201310 g FeSO4\u00b77H2O cho m\u1ed7i gram Cr6+, \u1edf pH 2\u20133 (axit h\u00f3a b\u1eb1ng H2SO4) \u0111\u1ec3 ph\u1ea3n \u1ee9ng ho\u00e0n to\u00e0n. 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T\u1ed5ng h\u1ee3p li\u1ec1u d\u00f9ng, \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 l\u01b0u \u00fd v\u1eadn h\u00e0nh.<\/p>","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1234],"tags":[1349,1352,1350,1351,1348],"class_list":["post-9033","post","type-post","status-publish","format-standard","hentry","category-hoa-chat-xu-ly-nuoc","tag-feso4-xu-ly-nuoc","tag-keo-tu-feso4","tag-khu-cr6","tag-kiem-soat-h2s","tag-phen-sat-2-xu-ly-nuoc"],"acf":[],"_links":{"self":[{"href":"https:\/\/hoachatlocthien.com\/en\/wp-json\/wp\/v2\/posts\/9033","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hoachatlocthien.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hoachatlocthien.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hoachatlocthien.com\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/hoachatlocthien.com\/en\/wp-json\/wp\/v2\/comments?post=9033"}],"version-history":[{"count":1,"href":"https:\/\/hoachatlocthien.com\/en\/wp-json\/wp\/v2\/posts\/9033\/revisions"}],"predecessor-version":[{"id":9066,"href":"https:\/\/hoachatlocthien.com\/en\/wp-json\/wp\/v2\/posts\/9033\/revisions\/9066"}],"wp:attachment":[{"href":"https:\/\/hoachatlocthien.com\/en\/wp-json\/wp\/v2\/media?parent=9033"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hoachatlocthien.com\/en\/wp-json\/wp\/v2\/categories?post=9033"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hoachatlocthien.com\/en\/wp-json\/wp\/v2\/tags?post=9033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}