{"id":2494,"date":"2025-06-10T11:24:35","date_gmt":"2025-06-10T03:24:35","guid":{"rendered":"http:\/\/www.osaces.com\/?p=2494"},"modified":"2025-06-10T11:25:38","modified_gmt":"2025-06-10T03:25:38","slug":"huoxingtanzaishuichulizuoyongjiliyijishiyongfangfa","status":"publish","type":"post","link":"http:\/\/www.osaces.com\/en\/huoxingtanzaishuichulizuoyongjiliyijishiyongfangfa\/","title":{"rendered":"Activated carbon in water treatment mechanism and the use of methods"},"content":{"rendered":"

\u00a0 \u00a0 \u00a0 \u00a0 Activated carbon, as a \"multi-faceted player\" in the field of water treatment, has become one of the key materials for solving water quality problems due to its unique pore structure and surface chemical properties. From household water purifiers to landscape water treatment to industrial wastewater treatment plants, activated carbon is ubiquitous. This article will analyze the adsorption mechanism of activated carbon at the molecular level, systematically introduce its practical applications in various water treatment scenarios, and provide scientific selection and use guidelines to help readers master the core points of this highly efficient water treatment technology.<\/span><\/p>\n

\n
\n

Activated carbon is used in water treatment mainly throughPhysical adsorption is the mainstay, supplemented by chemical reduction.<\/strong>The following is a condensed version of the mechanism of action and guidelines for use:<\/span><\/p>\n

\n

\u200cI. Core mechanisms of action<\/strong>\u200c<\/span><\/h3>\n
    \n
  1. \n

    \u200cPhysical adsorption (lead)<\/strong>\u200c<\/span><\/p>\n

      \n
    • \u200cpore retention<\/strong>Activated carbon has a well-developed pore structure (1g of activated carbon \u2248 500-1500 square meters of surface area) and adsorbs pollutants through van der Waals forces:<\/span>\n
        \n
      • \u200cmacroporous<\/strong>(>50nm) \u2192 interception of suspended particles<\/span><\/li>\n
      • \u200cmiddle hole<\/strong>(2-50 nm) \u2192 capture of pigments, odor molecules (e.g., geosmin)<\/span><\/li>\n
      • \u200cmicroporous<\/strong>(<2nm) \u2192 Targeting small organic molecules (pesticides, phenols)<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n
      • \n

        \u200cChemical reduction (auxiliary)<\/strong>\u200c<\/span><\/p>\n

          \n
        • \u200cdechlorination<\/strong>: Surface functional groups reduce residual chlorine (Cl\u2082\/HOCl) to harmless chloride ions:<\/span>
          \nce2HOCl+C->2HCl+CO2<\/span>\\ce<\/span><\/span>2H<\/span>OCl<\/span>+<\/span>C<\/span>-><\/span>2H<\/span>Cl<\/span>+<\/span>CO<\/span>2<\/span><\/span><\/span><\/span><\/li>\n
        • \u200cCombined heavy metals<\/strong>: Oxygen-containing groups (-COOH, -OH) adsorb lead, mercury, etc. by ion exchange.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
          \n

          \u200cII. Key application areas<\/strong>\u200c<\/span><\/h3>\n
            \n
          • \u200cresidual chlorine removal<\/strong>: Efficiently removes residual chlorine above 99%, protects precision equipment (e.g., reverse osmosis membranes), and improves the taste of drinking water.<\/span><\/li>\n
          • \u200cOrganic matter removal<\/strong>: Reduce COD 50-80%, suitable for deep treatment of industrial wastewater, swimming pool water purification.<\/span><\/li>\n
          • \u200cOdor and Color Control<\/strong>: Eliminate earthy, musty odors and brown color (e.g., home water purifiers, landscape water restoration).<\/span><\/li>\n
          • \u200cmicrotoxin interception<\/strong>: Adsorb trace contaminants such as pesticides and antibiotics to ensure safe drinking water.<\/span><\/li>\n<\/ul>\n
            \n

            \u200cThird, the use of activated carbon full strategy<\/strong>\u200c<\/span><\/h3>\n

            \u200c1. Scientific selection<\/strong>\u200c<\/span><\/h4>\n
              \n
            • \u200cMaterial Selection<\/strong>::<\/span>\n
                \n
              • \u200ccoconut shell carbon<\/strong>: Microporous percentage >85%, preferably for drinking water\/small molecule adsorption.<\/span><\/li>\n
              • \u200c\u7164\u8d28\u70ad<\/strong>: Well-developed mesopore, suitable for industrial wastewater treatment.<\/span><\/li>\n<\/ul>\n<\/li>\n
              • \u200cPerformance Parameters<\/strong>: Iodine value >1000mg\/g, CTC adsorption rate >70%.<\/span><\/li>\n<\/ul>\n

                \u200c2. Operational guidelines<\/strong>\u200c<\/span><\/h4>\n
                  \n
                • \u200cHome\/Pool<\/strong>::<\/span>\n
                    \n
                  • \u200cfilling method<\/strong>: Granular Carbon (GAC) is loaded into the filter cartridge (10L\/ton of water) and backwashed once a month to prevent slaking.<\/span><\/li>\n
                  • \u200creplacement cycle<\/strong>: Replacement of new charcoal every year (high temperature regeneration requires specialized equipment).<\/span><\/li>\n<\/ul>\n<\/li>\n
                  • \u200clarge-scale construction<\/strong>::<\/span>\n
                      \n
                    • \u200cFilter bed design<\/strong>: Thickness \u22651m, flow rate 8-15m\/h (too fast flow rate reduces the adsorption rate).<\/span><\/li>\n
                    • \u200ctiming of regeneration<\/strong>: Regeneration (steam activation at 850\u00b0C) is required when the adsorption capacity reaches 20% on its own weight.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                      \u200c3. Portfolio of Efficiency Programs<\/strong>\u200c<\/span><\/h4>\n
                        \n
                      • \u200cDechlorination + Organics<\/strong>: Activated carbon + quartz sand double-layer filtration \u2192 first remove chlorine to prevent oxidation, then adsorption of organic matter.<\/span><\/li>\n
                      • \u200cHeavy Metals + Odors<\/strong>: Activated carbon + KDF filter media (copper-zinc alloy) \u2192 KDF reduces heavy metals, activated carbon adsorbs by-products.<\/span><\/li>\n<\/ul>\n
                        \n

                        \u200cIV. Guidelines for avoiding pitfalls<\/strong>\u200c<\/span><\/h3>\n
                          \n
                        • \u200cMyth 1<\/strong>: Unlimited regeneration of activated carbon<\/span>
                          \n\u200cthe actual facts<\/strong>: After regeneration for 3-4 times the adsorption power decreases 30%, household charcoal is recommended to be replaced directly.<\/span><\/li>\n
                        • \u200cMyth 2<\/strong>: Activated charcoal can sterilize<\/span>
                          \n\u200cthe actual facts<\/strong>: Inhibits microbial reproduction only and needs to be combined with UV or chlorine disinfection.<\/span><\/li>\n
                        • \u200cfailure detection<\/strong>::<\/span>\n
                            \n
                          • Residual chlorine test agent residue detected (drops of reagent turn pink)<\/span><\/li>\n
                          • Acidic odor in effluent (release of pollutants from pore saturation)<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
                            \n

                            \u200cCost Reference<\/strong>::<\/span><\/p>\n

                              \n
                            • Charcoal cartridge for household water purification: \u00a550-200\/year (5-person household)<\/span><\/li>\n
                            • Fish pond filtration system: $80\/year (10 tons\/hour capacity)<\/span>
                              \n\u200cdraw attention to sth.<\/strong>: Highly concentrated wastewater requires pre-coagulation\/biochemical treatment, with activated carbon as the deep treatment unit.<\/span><\/li>\n<\/ul>\n<\/blockquote>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

                              \u00a0 \u00a0 \u00a0 \u00a0 Activated carbon, as a \"multi-faceted hand\" in the field of water treatment, with its unique pore structure and surface chemical properties, [...]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[125],"tags":[],"yoast_head":"\n\u6d3b\u6027\u70ad\u5728\u6c34\u5904\u7406\u4e2d\u7684\u4f5c\u7528\u673a\u7406\u53ca\u4f7f\u7528\u65b9\u6cd5 - \u5965\u5229\u4ed5\uff08\u5e7f\u5dde\uff09\u5eb7\u4f53\u8bbe\u5907\u6709\u9650\u516c\u53f8<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.osaces.com\/en\/huoxingtanzaishuichulizuoyongjiliyijishiyongfangfa\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u6d3b\u6027\u70ad\u5728\u6c34\u5904\u7406\u4e2d\u7684\u4f5c\u7528\u673a\u7406\u53ca\u4f7f\u7528\u65b9\u6cd5 - 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