{"id":31033,"date":"2026-07-03T16:08:18","date_gmt":"2026-07-03T08:08:18","guid":{"rendered":"https:\/\/shchimay.com\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/"},"modified":"2026-07-03T16:08:18","modified_gmt":"2026-07-03T08:08:18","slug":"understanding-scaling-and-corrosion-mechanisms-in-process-water","status":"publish","type":"post","link":"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/","title":{"rendered":"Understanding Scaling and Corrosion Mechanisms in Process Water"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_50 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Understanding_Scaling_and_Corrosion_Mechanisms_in_Process_Water\" title=\"Understanding Scaling and Corrosion Mechanisms in Process Water\">Understanding Scaling and Corrosion Mechanisms in Process Water<\/a><ul class='ez-toc-list-level-2'><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Introduction\" title=\"Introduction\">Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#The_Chemistry_of_Water_Deterioration\" title=\"The Chemistry of Water Deterioration\">The Chemistry of Water Deterioration<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Fundamental_Water_Chemistry\" title=\"Fundamental Water Chemistry\">Fundamental Water Chemistry<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Thermodynamic_Principles\" title=\"Thermodynamic Principles\">Thermodynamic Principles<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Scaling_Mechanisms_and_Formation\" title=\"Scaling Mechanisms and Formation\">Scaling Mechanisms and Formation<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Calcium_Carbonate_Scaling\" title=\"Calcium Carbonate Scaling\">Calcium Carbonate Scaling<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Crystal_Growth_and_Adherence\" title=\"Crystal Growth and Adherence\">Crystal Growth and Adherence<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Other_Scale_Types\" title=\"Other Scale Types\">Other Scale Types<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Corrosion_Mechanisms_and_Progression\" title=\"Corrosion Mechanisms and Progression\">Corrosion Mechanisms and Progression<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Electrochemical_Corrosion_Fundamentals\" title=\"Electrochemical Corrosion Fundamentals\">Electrochemical Corrosion Fundamentals<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Forms_of_Corrosion_in_Process_Water\" title=\"Forms of Corrosion in Process Water\">Forms of Corrosion in Process Water<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#The_Scale-Corrosion_Interaction\" title=\"The Scale-Corrosion Interaction\">The Scale-Corrosion Interaction<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#How_Scaling_Accelerates_Corrosion\" title=\"How Scaling Accelerates Corrosion\">How Scaling Accelerates Corrosion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#How_Corrosion_Promotes_Scaling\" title=\"How Corrosion Promotes Scaling\">How Corrosion Promotes Scaling<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Monitoring_Strategies_for_Combined_Deterioration\" title=\"Monitoring Strategies for Combined Deterioration\">Monitoring Strategies for Combined Deterioration<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Multi-Parameter_Approach\" title=\"Multi-Parameter Approach\">Multi-Parameter Approach<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Predictive_Index_Calculations\" title=\"Predictive Index Calculations\">Predictive Index Calculations<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Control_Strategies\" title=\"Control Strategies\">Control Strategies<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Chemical_Treatment_Programs\" title=\"Chemical Treatment Programs\">Chemical Treatment Programs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Physical_Treatment_Methods\" title=\"Physical Treatment Methods\">Physical Treatment Methods<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/shchimay.com\/ko\/understanding-scaling-and-corrosion-mechanisms-in-process-water\/#Conclusion\" title=\"Conclusion\">Conclusion<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1 id=\"understanding-scaling-and-corrosion-mechanisms-in-process-water\"><span class=\"ez-toc-section\" id=\"Understanding_Scaling_and_Corrosion_Mechanisms_in_Process_Water\"><\/span>Understanding Scaling and Corrosion Mechanisms in Process Water<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p><strong>Key Takeaways<\/strong><br \/>\n&#8211; Scaling and corrosion occur simultaneously in <strong>85%<\/strong> of industrial water systems, creating synergistic deterioration<br \/>\n&#8211; Calcium carbonate precipitation begins when LSI exceeds <strong>+0.5<\/strong>, with <strong>0.2 mm\/year<\/strong> thickness accumulation rates<br \/>\n&#8211; Temperature increases of <strong>10\u00b0C<\/strong> accelerate corrosion rates by <strong>25-30%<\/strong> in carbon steel systems<br \/>\n&#8211; Combined scale-corrosion monitoring reduces combined system failures by <strong>52%<\/strong><\/p>\n<h2 id=\"introduction\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Industrial water systems face a persistent challenge: the simultaneous occurrence of scaling and corrosion. These two deterioration mechanisms do not operate independently\u2014they interact, amplify, and accelerate each other in ways that compromise equipment integrity and operational efficiency.<\/p>\n<p>The <strong>International Water Association<\/strong> reports that <strong>$1.8 billion<\/strong> in annual maintenance costs across chemical processing, power generation, and manufacturing sectors result directly from scale-corrosion interactions. Understanding these mechanisms enables plant operators to implement targeted interventions that break the deterioration cycle and extend equipment service life.<\/p>\n<h2 id=\"the-chemistry-of-water-deterioration\"><span class=\"ez-toc-section\" id=\"The_Chemistry_of_Water_Deterioration\"><\/span>The Chemistry of Water Deterioration<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 id=\"fundamental-water-chemistry\"><span class=\"ez-toc-section\" id=\"Fundamental_Water_Chemistry\"><\/span>Fundamental Water Chemistry<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Process water contains dissolved minerals, gases, and organic compounds that determine its scaling and corrosive potential. The primary constituents affecting system integrity include:<\/p>\n<ul>\n<li><strong>Calcium and magnesium<\/strong> (hardness ions) \u2192 scaling potential<\/li>\n<li><strong>Chloride and sulfate<\/strong> (aggressive anions) \u2192 corrosion initiation<\/li>\n<li><strong>Bicarbonate alkalinity<\/strong> \u2192 buffering capacity and scaling propensity<\/li>\n<li><strong>Dissolved oxygen<\/strong> \u2192 cathodic reaction driver<\/li>\n<li><strong>Silica<\/strong> \u2192 silica scaling at elevated concentrations<\/li>\n<\/ul>\n<p>The <strong>Langelier Saturation Index (LSI)<\/strong> quantifies water&rsquo;s scaling or corrosive tendency. Positive LSI values indicate scaling water, while negative values suggest corrosive conditions. Balanced water typically maintains LSI between <strong>-0.5 and +0.5<\/strong>.<\/p>\n<h3 id=\"thermodynamic-principles\"><span class=\"ez-toc-section\" id=\"Thermodynamic_Principles\"><\/span>Thermodynamic Principles<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The solubility of most scale-forming minerals decreases as temperature rises. This temperature-dependent solubility creates preferential precipitation zones in heat exchangers, where warm surfaces become sites of rapid scale deposition. Simultaneously, elevated temperatures increase reaction kinetics\u2014both corrosion dissolution rates and scale precipitation rates accelerate exponentially with temperature.<\/p>\n<h2 id=\"scaling-mechanisms-and-formation\"><span class=\"ez-toc-section\" id=\"Scaling_Mechanisms_and_Formation\"><\/span>Scaling Mechanisms and Formation<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 id=\"calcium-carbonate-scaling\"><span class=\"ez-toc-section\" id=\"Calcium_Carbonate_Scaling\"><\/span>Calcium Carbonate Scaling<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Calcium carbonate represents the most common scale type in industrial cooling and process water systems. The precipitation reaction proceeds as follows:<\/p>\n<p><strong>Ca\u00b2\u207a + 2HCO\u2083\u207b \u2192 CaCO\u2083\u2193 + CO\u2082 + H\u2082O<\/strong><\/p>\n<p>According to <strong>DuPont Water Solutions<\/strong>, calcium carbonate scaling reaches critical levels when:<br \/>\n&#8211; LSI exceeds <strong>+0.5<\/strong><br \/>\n&#8211; Temperature surpasses <strong>50\u00b0C<\/strong> at heat transfer surfaces<br \/>\n&#8211; Residence time exceeds <strong>24 hours<\/strong> in concentrated loops<\/p>\n<p>Scale thickness accumulation rates of <strong>0.2-0.5 mm\/year<\/strong> are typical in untreated systems, with rates exceeding <strong>1.0 mm\/year<\/strong> documented in high-hardness water (&gt; 400 ppm CaCO\u2083).<\/p>\n<h3 id=\"crystal-growth-and-adherence\"><span class=\"ez-toc-section\" id=\"Crystal_Growth_and_Adherence\"><\/span>Crystal Growth and Adherence<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Scale formation involves two stages: nucleation (initial crystal formation) and growth (crystal enlargement). <strong>Heterogeneous nucleation<\/strong> occurs on metal surfaces, pipe walls, and existing deposits, creating a foundation for continued precipitation. Once nucleated, crystals adhere through electrostatic attraction and mechanical interlocking.<\/p>\n<p>Shanghai ChiMay&rsquo;s 4-in-1 Multi-Parameter Sensors monitor <strong>pH, ORP, conductivity, and temperature<\/strong> simultaneously, enabling operators to track conditions that promote scale formation before deposits become entrenched.<\/p>\n<h3 id=\"other-scale-types\"><span class=\"ez-toc-section\" id=\"Other_Scale_Types\"><\/span>Other Scale Types<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<table>\n<thead>\n<tr>\n<th>Scale Type<\/th>\n<th>Triggering Conditions<\/th>\n<th>Treatment Approach<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Calcium phosphate<\/td>\n<td>pH &gt; 8.0, PO\u2084\u00b3\u207b &gt; 5 ppm<\/td>\n<td>Acid dosing, scale inhibitors<\/td>\n<\/tr>\n<tr>\n<td>Silica<\/td>\n<td>SiO\u2082 &gt; 150 ppm, T &gt; 80\u00b0C<\/td>\n<td>Softening, pH adjustment<\/td>\n<\/tr>\n<tr>\n<td>Calcium sulfate<\/td>\n<td>SO\u2084\u00b2\u207b &gt; 200 ppm, Ca\u00b2\u207a &gt; 500 ppm<\/td>\n<td>Antiscalant, ion exchange<\/td>\n<\/tr>\n<tr>\n<td>Iron oxide<\/td>\n<td>Fe &gt; 0.5 ppm, oxidizing conditions<\/td>\n<td>Filtration, chelation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"corrosion-mechanisms-and-progression\"><span class=\"ez-toc-section\" id=\"Corrosion_Mechanisms_and_Progression\"><\/span>Corrosion Mechanisms and Progression<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 id=\"electrochemical-corrosion-fundamentals\"><span class=\"ez-toc-section\" id=\"Electrochemical_Corrosion_Fundamentals\"><\/span>Electrochemical Corrosion Fundamentals<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Corrosion is an electrochemical process requiring four simultaneous conditions:<br \/>\n1. <strong>Anode<\/strong> (metal dissolution site)<br \/>\n2. <strong>Cathode<\/strong> (reduction reaction site)<br \/>\n3. <strong>Electrolyte<\/strong> (conductive water pathway)<br \/>\n4. <strong>Electrical connection<\/strong> (electron flow between anode and cathode)<\/p>\n<p>The anodic reaction releases metal ions:<br \/>\n<strong>Fe \u2192 Fe\u00b2\u207a + 2e\u207b<\/strong><\/p>\n<p>The cathodic reaction consumes electrons, typically through oxygen reduction:<br \/>\n<strong>O\u2082 + 2H\u2082O + 4e\u207b \u2192 4OH\u207b<\/strong><\/p>\n<h3 id=\"forms-of-corrosion-in-process-water\"><span class=\"ez-toc-section\" id=\"Forms_of_Corrosion_in_Process_Water\"><\/span>Forms of Corrosion in Process Water<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Uniform Attack<\/strong>: Evenly distributed metal loss across exposed surfaces. This predictable corrosion form accounts for <strong>75%<\/strong> of all metallic deterioration but rarely causes sudden failures.<\/p>\n<p><strong>Pitting Corrosion<\/strong>: Localized attack creating deep cavities. <strong>NACE International<\/strong> identifies chloride concentrations above <strong>50 ppm<\/strong> as critical thresholds for pitting initiation in 316 stainless steel. Pitting represents the most dangerous corrosion form\u2014causing <strong>60%<\/strong> of catastrophic failures despite comprising only <strong>10-15%<\/strong> of corrosion incidents.<\/p>\n<p><strong>Crevice Corrosion<\/strong>: Accelerated attack beneath gaskets, deposits, or scale formations where stagnant water creates differential aeration cells. Scale deposits create ideal crevice conditions, linking corrosion and scaling mechanisms.<\/p>\n<p><strong>Galvanic Corrosion<\/strong>: Occurs when dissimilar metals connect electrically in the presence of an electrolyte. Common in chemical plants with mixed metallurgy.<\/p>\n<h2 id=\"the-scale-corrosion-interaction\"><span class=\"ez-toc-section\" id=\"The_Scale-Corrosion_Interaction\"><\/span>The Scale-Corrosion Interaction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 id=\"how-scaling-accelerates-corrosion\"><span class=\"ez-toc-section\" id=\"How_Scaling_Accelerates_Corrosion\"><\/span>How Scaling Accelerates Corrosion<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Scale deposits paradoxically increase corrosion rates despite appearing protective:<\/p>\n<ol>\n<li>\n<p><strong>Differential Aeration Cells<\/strong>: Scale patches create oxygen-depleted zones beneath deposits, establishing anodes that accelerate metal dissolution.<\/p>\n<\/li>\n<li>\n<p><strong>Under-Deposit Corrosion<\/strong>: Stagnant water beneath scales becomes concentrated with chlorides and acidity, attacking passive films.<\/p>\n<\/li>\n<li>\n<p><strong>Thermal Insulation<\/strong>: Scale layers raise surface temperatures, increasing both corrosion kinetics and localized stress.<\/p>\n<\/li>\n<\/ol>\n<p>The <strong>Electric Power Research Institute (EPRI)<\/strong> documented <strong>35% higher corrosion rates<\/strong> beneath 0.5 mm scale deposits compared to clean metal surfaces.<\/p>\n<h3 id=\"how-corrosion-promotes-scaling\"><span class=\"ez-toc-section\" id=\"How_Corrosion_Promotes_Scaling\"><\/span>How Corrosion Promotes Scaling<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Corrosion products create favorable conditions for scale precipitation:<\/p>\n<ol>\n<li>\n<p><strong>Nucleation Sites<\/strong>: Rough corrosion surfaces provide ideal sites for crystal nucleation.<\/p>\n<\/li>\n<li>\n<p><strong>pH Elevation<\/strong>: Cathodic reactions generate hydroxide ions, raising local pH and promoting carbonate precipitation.<\/p>\n<\/li>\n<li>\n<p><strong>Cation Release<\/strong>: Corroding surfaces release metal ions (Fe\u00b2\u207a, Al\u00b3\u207a) that react with anions to form mixed scales.<\/p>\n<\/li>\n<\/ol>\n<h2 id=\"monitoring-strategies-for-combined-deterioration\"><span class=\"ez-toc-section\" id=\"Monitoring_Strategies_for_Combined_Deterioration\"><\/span>Monitoring Strategies for Combined Deterioration<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 id=\"multi-parameter-approach\"><span class=\"ez-toc-section\" id=\"Multi-Parameter_Approach\"><\/span>Multi-Parameter Approach<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Effective scale-corrosion control requires simultaneous monitoring of multiple parameters:<\/p>\n<ul>\n<li><strong>Conductivity<\/strong>: Indicates total dissolved solids and concentration cycles<\/li>\n<li><strong>pH<\/strong>: Determines water stability and aggressiveness<\/li>\n<li><strong>ORP<\/strong>: Reflects oxidation potential and chlorine\/biocide effectiveness<\/li>\n<li><strong>Temperature<\/strong>: Affects both scale formation and corrosion rates<\/li>\n<li><strong>Dissolved Oxygen<\/strong>: Key driver of cathodic corrosion reactions<\/li>\n<\/ul>\n<p>Shanghai ChiMay&rsquo;s comprehensive sensor portfolio enables integrated monitoring strategies that track both deterioration mechanisms, providing operators with actionable data for treatment optimization.<\/p>\n<h3 id=\"predictive-index-calculations\"><span class=\"ez-toc-section\" id=\"Predictive_Index_Calculations\"><\/span>Predictive Index Calculations<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Modern monitoring systems calculate predictive indices automatically:<\/p>\n<table>\n<thead>\n<tr>\n<th>Index<\/th>\n<th>Calculation Basis<\/th>\n<th>Critical Threshold<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>LSI<\/td>\n<td>pH, Ca\u00b2\u207a, ALK, TDS, Temp<\/td>\n<td>\u00b10.5 target range<\/td>\n<\/tr>\n<tr>\n<td>RSI<\/td>\n<td>pH, Ca\u00b2\u207a, ALK, TDS, Temp<\/td>\n<td>6.0-7.0 stable<\/td>\n<\/tr>\n<tr>\n<td>PSI<\/td>\n<td>Multiple parameters<\/td>\n<td>&gt; 6.0 scaling risk<\/td>\n<\/tr>\n<tr>\n<td>CCI<\/td>\n<td>Conductivity, chloride<\/td>\n<td>&gt; 100 corrosive<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"control-strategies\"><span class=\"ez-toc-section\" id=\"Control_Strategies\"><\/span>Control Strategies<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 id=\"chemical-treatment-programs\"><span class=\"ez-toc-section\" id=\"Chemical_Treatment_Programs\"><\/span>Chemical Treatment Programs<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Effective treatment addresses both mechanisms:<\/p>\n<p><strong>Corrosion Inhibitors<\/strong>:<br \/>\n&#8211; <strong>Cathodic<\/strong>: Zinc, polyphosphates (precipitate as protective films)<br \/>\n&#8211; <strong>Anodic<\/strong>: Molybdate, nitrite, silicate (passivate metal surfaces)<br \/>\n&#8211; <strong>Mixed<\/strong>: Phosphonates, azoles (dual-action protection)<\/p>\n<p><strong>Scale Inhibitors<\/strong>:<br \/>\n&#8211; <strong>Threshold agents<\/strong>: Phosphonates, polyacrylates (1-10 ppm dosages)<br \/>\n&#8211; <strong>Crystal modifiers<\/strong>: Polyphosphates (distort scale crystals)<br \/>\n&#8211; <strong>Dispersants<\/strong>: copolymers (keep particles suspended)<\/p>\n<h3 id=\"physical-treatment-methods\"><span class=\"ez-toc-section\" id=\"Physical_Treatment_Methods\"><\/span>Physical Treatment Methods<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Softening<\/strong>: Ion exchange removes hardness ions<\/li>\n<li><strong>Acid dosing<\/strong>: Maintains stable pH, prevents carbonate precipitation<\/li>\n<li><strong>Deaeration<\/strong>: Removes dissolved oxygen, reduces cathodic driving force<\/li>\n<li><strong>Filtration<\/strong>: Removes suspended solids and corrosion products<\/li>\n<\/ul>\n<h2 id=\"conclusion\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Scaling and corrosion represent interconnected challenges that require integrated monitoring and treatment strategies. Understanding the chemical and electrochemical mechanisms enables chemical plant operators to implement proactive control programs that minimize equipment deterioration, reduce maintenance costs, and maintain production reliability.<\/p>\n<p>Shanghai ChiMay&rsquo;s water quality monitoring solutions provide the instrumentation foundation for effective scale-corrosion management, with conductivity sensors, multi-parameter analyzers, and control valves designed for demanding chemical process applications.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Understanding Scaling and Corrosion Mechanisms in Process Water Key Takeaways &#8211; Scaling and corrosion occur simultaneously in 85% of industrial water systems, creating synergistic deterioration &#8211; Calcium carbonate precipitation begins when LSI exceeds +0.5, with 0.2 mm\/year thickness accumulation rates &#8211; Temperature increases of 10\u00b0C accelerate corrosion rates by 25-30% in carbon steel systems &#8211;&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"categories":[1],"tags":[],"translation":{"provider":"WPGlobus","version":"2.12.0","language":"ko","enabled_languages":["en","zh","es","de","fr","ru","pt","ar","ja","ko","it","id","hi","th","vi","tr"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"zh":{"title":false,"content":false,"excerpt":false},"es":{"title":false,"content":false,"excerpt":false},"de":{"title":false,"content":false,"excerpt":false},"fr":{"title":false,"content":false,"excerpt":false},"ru":{"title":false,"content":false,"excerpt":false},"pt":{"title":false,"content":false,"excerpt":false},"ar":{"title":false,"content":false,"excerpt":false},"ja":{"title":false,"content":false,"excerpt":false},"ko":{"title":false,"content":false,"excerpt":false},"it":{"title":false,"content":false,"excerpt":false},"id":{"title":false,"content":false,"excerpt":false},"hi":{"title":false,"content":false,"excerpt":false},"th":{"title":false,"content":false,"excerpt":false},"vi":{"title":false,"content":false,"excerpt":false},"tr":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/shchimay.com\/ko\/wp-json\/wp\/v2\/posts\/31033"}],"collection":[{"href":"https:\/\/shchimay.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/shchimay.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/shchimay.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/shchimay.com\/ko\/wp-json\/wp\/v2\/comments?post=31033"}],"version-history":[{"count":0,"href":"https:\/\/shchimay.com\/ko\/wp-json\/wp\/v2\/posts\/31033\/revisions"}],"wp:attachment":[{"href":"https:\/\/shchimay.com\/ko\/wp-json\/wp\/v2\/media?parent=31033"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shchimay.com\/ko\/wp-json\/wp\/v2\/categories?post=31033"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shchimay.com\/ko\/wp-json\/wp\/v2\/tags?post=31033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}