{"id":20492,"date":"2023-07-27T17:56:43","date_gmt":"2023-07-27T10:56:43","guid":{"rendered":"https:\/\/mptek.com.vn\/?page_id=20492"},"modified":"2023-08-02T13:33:51","modified_gmt":"2023-08-02T06:33:51","slug":"color-processing","status":"publish","type":"page","link":"https:\/\/mptek.com.vn\/en\/solution\/color-processing\/","title":{"rendered":"Color processing"},"content":{"rendered":"\t<section class=\"section\" id=\"section_965249531\">\n\t\t<div class=\"bg section-bg fill bg-fill  \" >\n\n\t\t\t\n\t\t\t<div class=\"section-bg-overlay absolute fill\"><\/div>\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\t<div class=\"ux-shape-divider ux-shape-divider--bottom ux-shape-divider--style-waves-opacity-2\">\n\t\t<svg viewBox=\"0 0 1000 300\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" preserveAspectRatio=\"none\">\n  <path class=\"ux-shape-fill\" opacity=\"0.15\" d=\"M0 299L-2 19.9998C153 -16.0002 308 155 413 184C515.64 212.35 562 152 645 153C725 154 787 206 874 233C939.54 253.34 975 248 1000 244.61V299H0Z\"\/>\n  <path class=\"ux-shape-fill\" opacity=\"0.3\" d=\"M0 300L-2 34C155 -9.00003 300 178 403 212C504.11 245.38 562 165 645 166C725 167 790.09 220.07 874 253C939.21 278.59 978.07 269.72 1000 263.61V300H0Z\"\/>\n  <path class=\"ux-shape-fill\" d=\"M0 300L-1 69.7099C216 56.9999 299.47 198.86 403 226C506 253 577 196 660 197C740 198 790.09 234.07 874 267C935.23 291 982 282.61 1000 277.61V300H0Z\"\/>\n<\/svg>\n\t<\/div>\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n<div class=\"container section-title-container\" ><h2 class=\"section-title section-title-center\"><b><\/b><span class=\"section-title-main\" style=\"font-size:175%;color:rgb(255, 255, 255);\">MPTEK PROVIDE SOLUTIONS<\/span><b><\/b><\/h2><\/div>\n  <div id=\"page-header-1488907796\" class=\"page-header-wrapper\">\n  <div class=\"page-title dark simple-title\">\n\n    \n    <div class=\"page-title-inner container align-center text-center flex-row-col medium-flex-wrap\" >\n            <div class=\"title-content flex-col\">\n        <div class=\"title-breadcrumbs pb-half pt-half\"><\/div>      <\/div>\n    <\/div>\n\n       <\/div>\n    <\/div>\n  \n\t\t<\/div>\n\n\t\t\n<style>\n#section_965249531 {\n  padding-top: 50px;\n  padding-bottom: 50px;\n}\n#section_965249531 .section-bg-overlay {\n  background-color: rgba(0, 0, 0, 0.541);\n}\n#section_965249531 .section-bg.bg-loaded {\n  background-image: url(https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/03\/Phoi-canh-3.jpg);\n}\n#section_965249531 .section-bg {\n  background-position: 0% 44%;\n}\n#section_965249531 .ux-shape-divider--top svg {\n  height: 150px;\n  --divider-top-width: 100%;\n}\n#section_965249531 .ux-shape-divider--bottom svg {\n  height: 50px;\n  --divider-width: 200%;\n}\n@media (min-width:550px) {\n  #section_965249531 {\n    padding-top: 100px;\n    padding-bottom: 100px;\n  }\n  #section_965249531 .ux-shape-divider--bottom svg {\n    height: 150px;\n    --divider-width: 247%;\n  }\n}\n@media (min-width:850px) {\n  #section_965249531 {\n    padding-top: 100px;\n    padding-bottom: 100px;\n  }\n}\n<\/style>\n\t<\/section>\n\t\n\t<section class=\"section\" id=\"section_593554922\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t<div class=\"section-bg-overlay absolute fill\"><\/div>\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n<div class=\"row row-small align-center\"  id=\"row-1200265561\">\n\n\t<div id=\"col-1156578531\" class=\"col medium-3 large-3\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<div class=\"nav-wrapper\"><ul class=\"nav hide-for-small nav-uppercase nav-vertical nav-tabs text-left nav-left\"><p class=\"lead shortcode-error text-center\">Sorry, no pages was found<\/p><\/ul><\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1123912069\" class=\"col medium-9 small-12 large-9\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\t<div id=\"text-891991704\" class=\"text\">\n\t\t\n<h2>COLOR DEVELOPMENT SOLUTION<\/h2>\n<h3>What is color? Why deal with chroma?<\/h3>\n<div>In wastewater treatment, pollution indicators need to be treated such as biochemical oxygen demand (BOD), chemical oxygen demand (COD), solids, suspended particles, metals and other factors. Color is also an important factor to be considered. So what is color? Are there methods to handle chroma? Wastewater containing high color is usually wastewater from the textile, dyeing and printing industries. tanning, paper making\u2026 Most of the dyes encountered in wastewater have polycyclic aromatic structures containing elements such as nitrogen, metals and sulfur, making it difficult to treat wastewater by other methods. physics, chemistry and biology. The following are effective methods of color treatment that have been applied, you can refer to to know the outstanding characteristics of each method.<\/div>\n<div>\u00a0<\/div>\n<div>1- Coagulation method<\/div>\n<ul>\n<li>Chemical flocculation: application of flocculation process, using chemicals to separate pollutants with color into slurry and settle. Chemicals used to create the flocculation reaction are PAC, AlCl3, FeCl2,\u2026\u2026 in which PAC is the most widely used because of its high efficiency and ease of storage and use. However, this method consumes a lot of chemicals, generates a lot of sludge and is expensive to treat.<\/li>\n<li>Electrochemical coagulation: Electrochemical coagulation (electrolysis) is the use of electrodes immersed in water under the effect of DC current. The anode anode will corrode and dissolve into the wastewater solution, the commonly used electrode is aluminum or iron, the dissolved ions will react with the pollutant similar to chemical coagulation and form sludge. sedimentation to separate pollutants from wastewater. The advantage of this method is that it consumes less chemicals, produces less sludge, and is capable of oxidizing other difficult-to-treat pollutants.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-20060\" src=\"http:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/04\/mptek-5-533x400.png\" alt=\"qu\u00e1 tr\u00ecnh keo t\u1ee5 \u0111i\u1ec7n h\u00f3a trong x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i\" width=\"533\" height=\"400\" srcset=\"https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/04\/mptek-5-533x400.png 533w, https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/04\/mptek-5-768x576.png 768w, https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/04\/mptek-5-600x450.png 600w, https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/04\/mptek-5.png 800w\" sizes=\"auto, (max-width: 533px) 100vw, 533px\" \/><\/p>\n<div>See also: Waste water treatment by electrolysis technology<\/div>\n<div>2- Adsorption method<\/div>\n<div>Adsorption is a very popular method for decolorization. The materials with good adsorption capacity are activated carbon, zeolite, activated aluminium, silica gel and polymeric adsorbents&#8230; In essence, activated carbon has the ability to absorb color and odor very well. Not only does it help reduce color, it also helps reduce unpleasant odors. However, this approach is only applicable to small wastewater treatment systems. Besides, the cost of activated carbon is also quite high compared to other wastewater treatment chemicals.<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-20272\" src=\"http:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/Wood-Based-Powdered-5kg-25-Kg-Bags-Activated-Carbon-Charcoal-for-Caramel-Bleaching-516x400.jpg\" alt=\"\" width=\"516\" height=\"400\" srcset=\"https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/Wood-Based-Powdered-5kg-25-Kg-Bags-Activated-Carbon-Charcoal-for-Caramel-Bleaching-516x400.jpg 516w, https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/Wood-Based-Powdered-5kg-25-Kg-Bags-Activated-Carbon-Charcoal-for-Caramel-Bleaching.jpg 550w\" sizes=\"auto, (max-width: 516px) 100vw, 516px\" \/><\/p>\n<div>3- Membrane method<\/div>\n<div>\u00a0<\/div>\n<div>The principle of operation of this method is to pass the wastewater through a semi-permeable membrane. The semi-permeable membrane allows only water to pass through and retains pollutants, insoluble organic matter including color and suspended solids. Some commonly used wastewater filtration membranes are nanofiltration membranes, RO reverse osmosis membranes, microfiltration membranes, ultrafiltration membranes, etc. Currently, nanomembrane technology is synthesized using semiconductor materials capable of adding photocatalytic properties (ZnO-cellulose acetate, TiO2-graphene, TiO2-pvdf&#8230; etc.) with the ability to remove color completely.<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-20221\" src=\"http:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/membranes-13-00364-ag-624x400.webp\" alt=\"TiO2\/PVDF nano membrane\" width=\"624\" height=\"400\" srcset=\"https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/membranes-13-00364-ag-624x400.webp 624w, https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/membranes-13-00364-ag-768x493.webp 768w, https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/membranes-13-00364-ag-600x385.webp 600w, https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/membranes-13-00364-ag.webp 1247w\" sizes=\"auto, (max-width: 624px) 100vw, 624px\" \/><\/p>\n<div>However, this method requires high investment and operating costs, so it is rarely applied to wastewater treatment.<\/div>\n<div>\u00a0<\/div>\n<div>4 &#8211; Advanced oxidation method<\/div>\n<div>\u00a0<\/div>\n<div>Advanced oxidation is the most effective method to treat wastewater with difficult coloration. Usually applied at the end of the treatment stage after the wastewater has undergone physical, chemical, biological treatment steps&#8230;<\/div>\n<ul>\n<li>Ozone method<\/li>\n<\/ul>\n<div>Ozone with the chemical formula O3 consists of 3 oxygen atoms bonded together. Compared to another stable form of oxygen, O2, the O3 molecule has more than one oxygen atom. This oxygen atom also has the least stable bond in the molecule, it is easy to split to become a free oxygen atom. This is also the reason why Ozone is a very strong oxidizing agent, stronger and safer than chlorine. Most of the dyes encountered in wastewater have polycyclic aromatic structures containing elements such as nitrogen, metals and sulfur, making it difficult to treat wastewater by physical, chemical and biological methods. learn. The conjugated chains present in the dye structure, the colorant, are actively destroyed by ozonation. Using ozonation as a treatment technique is beneficial because no sludge is generated. Decomposition of the dye is achieved in a single step and furthermore, ozone decomposes to oxygen which helps to increase DO in the water. However, ozonation rarely occurs complete oxidation, so there is a disadvantage of forming by-products.<\/div>\n<ul>\n<li>Fenton&#8217;s method<\/li>\n<\/ul>\n<div>This is a technological method of oxidizing difficult-to-biodegrade organic matter, which has the ability to effectively decolorize. The method of using iron ions as a hydrogen peroxide catalyst to oxidize organic substances by generating free radicals with high oxidizing capacity has a wide range of applications. Therefore, Fenton is considered as the optimal method in treating wastewater with difficult coloration.<\/div>\n<ul>\n<li>Fenton uniform<\/li>\n<\/ul>\n<div>The traditional fenton method uses a combination of H2O2 and Fe2+ iron salts to generate a free hydroxyl radical OH* which is a strong oxidizing agent capable of degrading colorants and other difficult-to-treat substances, while Fe2+ is oxidized. turned into Fe3+. The Fenton reaction equation is written as follows: Fe2+ + H2O2 \u2192 Fe3+ + OH- + OH\u2022 The \u2022OH radical after formation will participate in the oxidation reaction of organic compounds present in the water to be treated: conversion of substances. organic matter from high to low molecular weight organic substances CHC (high molecular weight) +\u2022HO \u2192 CHC (low molecular weight) +CO2 +H2O+ OH-<\/div>\n<ul>\n<li>Heterogeneic Fenton &#8211; FBR Fenton<\/li>\n<\/ul>\n<div>The most important disadvantage of the homogeneous Fenton process is that it has to be performed at low pH, and for the solution to turn into a colloidal precipitate it is necessary to raise the pH &gt; 7. Therefore, the cost of chemicals is very high. Therefore, to overcome the disadvantages of iron used as a catalyst, there have been many research works to replace it with Goethite iron ore (FeOOH), iron-containing sand, or iron on Fe\/SiO2, Fe\/TiO2 carriers. , Fe\/activated carbon, Fe\/Zeolite\u2026 this process is similar to the Fenton process studied above, so it is called a heterogeneous Fenton-type process. The Fenton reaction is initiated by the production of Fe(II) in the presence of H2O2, the reduction-dissolution of goethite occurs. then there is a re-precipitation of Fe(III) back to goethite. This process can be represented in the following steps: alpha-FeOOH(s) + 2H+ + \u00bd H2O2 \u2013&gt; FeII + 1\/2O2 +2H2O FeII + H2O2 \u2014&gt; Fe(III) + \u2022HO +OH- Fe( III) + H2O+OH- \u2013&gt; alpha-FeOOH(s) + 2H+ The heterogeneous Fenton process has been successfully researched and developed with FBR-Fenton technology (Liquid Fenton) with FeOOH catalyst for reduction results. high color and has been applied in Vietnam. FBR-Fenton will be a potential technology in the future to remove difficult-to-treat wastewater such as color and persistent organic matter.<\/div>\n<figure id=\"attachment_20162\" aria-describedby=\"caption-attachment-20162\" style=\"width: 536px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20162 size-medium\" src=\"http:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/04\/Cong-nghe-1-536x400.png\" alt=\"M\u00f4 H\u00ecnh M\u00f4 T\u1ea3 C\u00f4ng Ngh\u1ec7 Fenton H\u00f3a L\u1ecfng FBR Fenton\" width=\"536\" height=\"400\" srcset=\"https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/04\/Cong-nghe-1-536x400.png 536w, https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/04\/Cong-nghe-1.png 600w\" sizes=\"auto, (max-width: 536px) 100vw, 536px\" \/><figcaption id=\"caption-attachment-20162\" class=\"wp-caption-text\"><\/p>\n<div>Use FBR-Fenton for color processing<\/div>\n<p><\/p>\n<div>See also: FBR Fenton Technology<\/div>\n<p><\/p>\n<div>TiO2 .-based photocatalysis<\/div>\n<p><\/p>\n<div>\u00a0<\/div>\n<p><\/p>\n<div>TiO2 or titanium photocatalysis is a process that uses light energy to activate titanium catalysts to generate OH* radicals (strong oxidizing radicals) that decompose organic substances, colorants into non-toxic or non-toxic forms. mineralizes to CO2 + H2O. This process is a natural process, does not use chemicals and has no negative impact on the environment.<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-20231 size-medium\" style=\"color: #555555; font-size: 14.4px;\" src=\"http:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/Photocatalyst-decomposition-principle-639x400.jpg\" alt=\"C\u01a1 Ch\u1ebf Quang X\u00fac T\u00e1c TIO2\" width=\"639\" height=\"400\" srcset=\"https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/Photocatalyst-decomposition-principle-639x400.jpg 639w, https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/Photocatalyst-decomposition-principle-768x481.jpg 768w, https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/Photocatalyst-decomposition-principle-600x376.jpg 600w, https:\/\/mptek.com.vn\/wp-content\/uploads\/2023\/05\/Photocatalyst-decomposition-principle.jpg 910w\" sizes=\"auto, (max-width: 639px) 100vw, 639px\" \/><\/figcaption><\/figure>\n<blockquote>\n<div>See also: Titanium photocatalyst technology<\/div>\n<\/blockquote>\n<div>MPTEK specializes in providing solutions to treat color in wastewater by advanced AOPs advanced oxidation processes. Contact us now for advice and find the best solution for you! MPTEK SOLUTION COMPANY LIMITED Hotline: 0903188563 Address: 20 Huynh Thien Loc, Hoa Thanh Ward, Tan Phu District, HCMC.<\/div>\n\t\t\n<style>\n#text-891991704 {\n  font-size: 0.9rem;\n  line-height: 1.8;\n  text-align: left;\n  color: rgb(0, 0, 0);\n}\n#text-891991704 > * {\n  color: rgb(0, 0, 0);\n}\n@media (min-width:550px) {\n  #text-891991704 {\n    font-size: 0.95rem;\n    line-height: 1.9;\n  }\n}\n@media (min-width:850px) {\n  #text-891991704 {\n    font-size: 1rem;\n    line-height: 2;\n  }\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n\t\t<\/div>\n\n\t\t\n<style>\n#section_593554922 {\n  padding-top: 0px;\n  padding-bottom: 0px;\n}\n#section_593554922 .section-bg-overlay {\n  background-color: rgba(255, 255, 255, 0.85);\n}\n#section_593554922 .ux-shape-divider--top svg {\n  height: 150px;\n  --divider-top-width: 100%;\n}\n#section_593554922 .ux-shape-divider--bottom svg {\n  height: 150px;\n  --divider-width: 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