{"id":927,"date":"2022-05-17T16:36:32","date_gmt":"2022-05-17T09:36:32","guid":{"rendered":"https:\/\/mekongxanh.vn\/?page_id=927"},"modified":"2022-07-19T09:14:42","modified_gmt":"2022-07-19T02:14:42","slug":"cong-trinh-xu-ly-nuoc-thai","status":"publish","type":"page","link":"https:\/\/mekongxanh.vn\/en\/dich-vu\/cong-trinh-xu-ly-nuoc-thai\/","title":{"rendered":"Wastewater treatment"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"927\" class=\"elementor elementor-927\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e901d54 elementor-section-height-min-height elementor-section-boxed elementor-section-height-default elementor-section-items-middle\" data-id=\"e901d54\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[],&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-4d86c3f\" data-id=\"4d86c3f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-02f3ad2 elementor-widget elementor-widget-woocommerce-breadcrumb\" data-id=\"02f3ad2\" data-element_type=\"widget\" data-widget_type=\"woocommerce-breadcrumb.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<nav class=\"woocommerce-breadcrumb\" aria-label=\"Breadcrumb\" data-no-translation=\"\" data-trp-gettext=\"\">Home<\/nav>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-bc6e83c\" data-id=\"bc6e83c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d64b306 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d64b306\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-28d939a elementor-hidden-tablet elementor-hidden-mobile\" data-id=\"28d939a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-68a97a1 elementor-hidden-desktop elementor-hidden-tablet elementor-hidden-mobile elementor-nav-menu__text-align-aside elementor-widget elementor-widget-nav-menu\" data-id=\"68a97a1\" data-element_type=\"widget\" data-settings=\"{&quot;layout&quot;:&quot;dropdown&quot;,&quot;submenu_icon&quot;:{&quot;value&quot;:&quot;&lt;i class=\\&quot;fas fa-chevron-right\\&quot;&gt;&lt;\\\/i&gt;&quot;,&quot;library&quot;:&quot;fa-solid&quot;},&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_offset&quot;:90,&quot;sticky_parent&quot;:&quot;yes&quot;,&quot;sticky_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;,&quot;mobile&quot;],&quot;sticky_effects_offset&quot;:0,&quot;sticky_anchor_link_offset&quot;:0}\" data-widget_type=\"nav-menu.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<nav class=\"elementor-nav-menu--dropdown elementor-nav-menu__container\" aria-hidden=\"true\">\n\t\t\t\t<ul id=\"menu-2-68a97a1\" class=\"elementor-nav-menu\"><li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-959\"><a href=\"#gthieu\" class=\"elementor-item elementor-item-anchor menu-link\" tabindex=\"-1\">ABOUT US<\/a><\/li>\n<li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-960\"><a href=\"#quy_trinh\" class=\"elementor-item elementor-item-anchor menu-link\" tabindex=\"-1\">Implementation process<\/a><\/li>\n<li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-961\"><a href=\"#liet_ke\" class=\"elementor-item elementor-item-anchor menu-link\" tabindex=\"-1\">List processing technology<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\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-a95467f elementor-nav-menu__text-align-aside elementor-widget elementor-widget-nav-menu\" data-id=\"a95467f\" data-element_type=\"widget\" data-settings=\"{&quot;layout&quot;:&quot;dropdown&quot;,&quot;submenu_icon&quot;:{&quot;value&quot;:&quot;&lt;i class=\\&quot;fas fa-chevron-right\\&quot;&gt;&lt;\\\/i&gt;&quot;,&quot;library&quot;:&quot;fa-solid&quot;},&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_offset&quot;:190,&quot;sticky_parent&quot;:&quot;yes&quot;,&quot;sticky_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;,&quot;mobile&quot;],&quot;sticky_effects_offset&quot;:0,&quot;sticky_anchor_link_offset&quot;:0}\" data-widget_type=\"nav-menu.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<nav class=\"elementor-nav-menu--dropdown elementor-nav-menu__container\" aria-hidden=\"true\">\n\t\t\t\t<ul id=\"menu-2-a95467f\" class=\"elementor-nav-menu\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-969\"><a href=\"https:\/\/mekongxanh.vn\/en\/dich-vu\/cong-trinh-xu-ly-nuoc-thai\/\" class=\"elementor-item menu-link\" tabindex=\"-1\">Wastewater treatment<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-970\"><a href=\"https:\/\/mekongxanh.vn\/en\/dich-vu\/cong-trinh-xu-ly-nuoc-cap-nuoc-tinh-khiet\/\" class=\"elementor-item menu-link\" tabindex=\"-1\">Feed water treatment, water filtration system<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-975\"><a href=\"https:\/\/mekongxanh.vn\/en\/dich-vu\/he-thong-thu-gom-xu-ly-bui\/\" class=\"elementor-item menu-link\" tabindex=\"-1\">dust filtration system<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-976\"><a href=\"https:\/\/mekongxanh.vn\/en\/dich-vu\/he-thong-xu-ly-khi-thai-mui-hoi\/\" class=\"elementor-item menu-link\" tabindex=\"-1\">Exhaust gas and odor treatment system<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-974\"><a href=\"https:\/\/mekongxanh.vn\/en\/dich-vu\/he-thong-thong-gio-cach-am-cach-nhiet\/\" class=\"elementor-item menu-link\" tabindex=\"-1\">Ventilation system, sound insulation, heat insulation<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-977\"><a href=\"https:\/\/mekongxanh.vn\/en\/dich-vu\/xu-ly-chat-thai-ran\/\" class=\"elementor-item menu-link\" tabindex=\"-1\">solid waste management<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-79a3366\" data-id=\"79a3366\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-1bf4267 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1bf4267\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-513f7cf\" data-id=\"513f7cf\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c016340 elementor-nav-menu--stretch elementor-widget-tablet__width-auto elementor-hidden-desktop elementor-hidden-tablet elementor-hidden-mobile elementor-nav-menu__text-align-aside elementor-nav-menu--toggle elementor-nav-menu--burger elementor-widget elementor-widget-nav-menu\" data-id=\"c016340\" data-element_type=\"widget\" data-settings=\"{&quot;layout&quot;:&quot;dropdown&quot;,&quot;submenu_icon&quot;:{&quot;value&quot;:&quot;&lt;i class=\\&quot;fas fa-chevron-right\\&quot;&gt;&lt;\\\/i&gt;&quot;,&quot;library&quot;:&quot;fa-solid&quot;},&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_offset&quot;:20,&quot;full_width&quot;:&quot;stretch&quot;,&quot;sticky_offset_tablet&quot;:0,&quot;sticky_effects_offset_tablet&quot;:0,&quot;toggle&quot;:&quot;burger&quot;,&quot;sticky_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;,&quot;mobile&quot;],&quot;sticky_effects_offset&quot;:0,&quot;sticky_anchor_link_offset&quot;:0}\" data-widget_type=\"nav-menu.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-toggle\" role=\"button\" tabindex=\"0\" aria-label=\"Toggle menu\" aria-expanded=\"false\">\n\t\t\t<i aria-hidden=\"true\" role=\"presentation\" class=\"elementor-menu-toggle__icon--open eicon-menu-bar\"><\/i><i aria-hidden=\"true\" role=\"presentation\" class=\"elementor-menu-toggle__icon--close eicon-close\"><\/i>\t\t<\/div>\n\t\t\t\t\t<nav class=\"elementor-nav-menu--dropdown elementor-nav-menu__container\" aria-hidden=\"true\">\n\t\t\t\t<ul id=\"menu-2-c016340\" class=\"elementor-nav-menu\"><li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-959\"><a href=\"#gthieu\" class=\"elementor-item elementor-item-anchor menu-link\" tabindex=\"-1\">ABOUT US<\/a><\/li>\n<li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-960\"><a href=\"#quy_trinh\" class=\"elementor-item elementor-item-anchor menu-link\" tabindex=\"-1\">Implementation process<\/a><\/li>\n<li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-961\"><a href=\"#liet_ke\" class=\"elementor-item elementor-item-anchor menu-link\" tabindex=\"-1\">List processing technology<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-7b3d204 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7b3d204\" data-element_type=\"section\" id=\"gthieu\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-c3bd1b5\" data-id=\"c3bd1b5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a321e4c elementor-widget__width-initial css_vien_t elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"a321e4c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ABOUT US<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-faf73a6 elementor-widget elementor-widget-text-editor\" data-id=\"faf73a6\" data-element_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 style=\"text-align: justify;\">Wastewater is defined as a liquid that is discharged after human use and has changed its original properties. Normally, wastewater is classified according to its origin. It is also the basis for the selection of treatment methods or technologies. According to this classification, there are the following types of wastewater:<\/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-114d5f1 elementor-widget elementor-widget-text-editor\" data-id=\"114d5f1\" data-element_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 style=\"text-align: center;\"><strong><em>Board. <\/em><\/strong><em>Classification of sources of wastewater<\/em><\/p><table><tbody><tr><td width=\"58\">\u00a0<\/td><td width=\"141\"><p style=\"text-align: center;\">DOMESTIC WASTEWATER<\/p><\/td><td width=\"162\"><p style=\"text-align: center;\">WASTEWATER <br \/>INDUSTRY<\/p><\/td><td width=\"195\"><p style=\"text-align: center;\">WATER PERFORMANCE\/ WATER SLIPPING<\/p><\/td><td width=\"114\"><p style=\"text-align: center;\">WASTEWATER<\/p><p style=\"text-align: center;\">NATURE<\/p><\/td><\/tr><tr><td width=\"58\">\u00a0<\/td><td colspan=\"2\" width=\"303\"><p style=\"text-align: center;\">(Identified source)<\/p><\/td><td colspan=\"2\" width=\"309\"><p style=\"text-align: center;\">(Unknown source)<\/p><\/td><\/tr><tr><td width=\"58\"><p style=\"text-align: center;\">Source<\/p><\/td><td width=\"141\"><p style=\"text-align: justify;\">Wastewater from residential areas, commercial areas, offices, schools and other similar facilities.<\/p><\/td><td width=\"162\"><p style=\"text-align: justify;\">Wastewater from operating factories, including domestic wastewater, but mainly production wastewater.<\/p><\/td><td width=\"195\"><p style=\"text-align: justify;\">Any type of water that enters a sewer system through a leak, broken pipe, or through a retaining wall. Overflow is the amount of rainwater that flows into the sewer system from the rainwater drainage system, roofs, sidewalks, etc.<\/p><\/td><td width=\"114\"><p style=\"text-align: justify;\">Surface water overflows due to local rain or melting snow.<\/p><\/td><\/tr><\/tbody><\/table>\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-f561c9f elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"f561c9f\" data-element_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\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-c73316a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c73316a\" data-element_type=\"section\" id=\"quy_trinh\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-8b9d86a\" data-id=\"8b9d86a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9b3f28e elementor-widget__width-initial css_vien_t_1 elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"9b3f28e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Typical pollution indicators in wastewater<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e2991f3 elementor-widget elementor-widget-text-editor\" data-id=\"e2991f3\" data-element_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 style=\"text-align: justify;\">There are three basic groups of criteria (parameters) used to assess the quality of water sources: physical criteria, chemical criteria and biological criteria.<\/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-14c428f elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"14c428f\" data-element_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\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">a.Physical criteria<\/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 class=\"elementor-element elementor-element-a1a6f0b elementor-widget elementor-widget-text-editor\" data-id=\"a1a6f0b\" data-element_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 style=\"text-align: justify;\">Including total solids content, temperature, turbidity, clarity, color, odor, taste, ... qualitative assessment of water pollution caused by industrial wastewater and domestic wastewater out.<\/p><p style=\"text-align: justify;\"><em>Total solids content: <\/em>Total solids are the most important characteristic physical components of wastewater. It includes suspended, colloidal and dissolved solids.<\/p><p style=\"text-align: justify;\"><em>\u2013 Temperature (oC): <\/em>The temperature of the wastewater affects the life of aquatic organisms and the solubility of oxygen in the water. It is also one of the important technological parameters in the process of wastewater treatment technology.<\/p><p style=\"text-align: justify;\"><em>\u2013 Color degree (unit: Pt \u2013 Co): <\/em>The color of wastewater is due to domestic, industrial, dyes or products created from the processes of decomposition of organic matter. Color is a qualitative parameter that can be used to determine the general state of wastewater.<\/p><p style=\"text-align: justify;\"><em>\u2013 Turbidity: <\/em>Turbidity of wastewater is caused by suspended and colloidal substances contained in wastewater. The usual unit of measurement for turbidity is NTU.<\/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-680c0b8 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"680c0b8\" data-element_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\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">b.Chemical parameters<\/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 class=\"elementor-element elementor-element-73d120c elementor-widget elementor-widget-text-editor\" data-id=\"73d120c\" data-element_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 style=\"text-align: justify;\">Including pH, acidity, alkalinity, hardness, dissolved oxygen content DO, biochemical oxygen demand BOD, chemical oxygen demand COD, content of nutrients (Nitrogen, Phosphorus, ...) heavy metals and toxic substances.<\/p><p style=\"text-align: justify;\"><em>- pH: <\/em>pH is a measure of the acidity or basicity of water and is calculated by the concentration of hydrogen ions (pH = \u2013 lg[H<sup>+<\/sup>]). pH is the most important parameter in biochemical processes because the rate of this process depends significantly on the change of pH.<\/p><p style=\"text-align: justify;\"><em>- Dissolved oxygen: <\/em>Dissolved oxygen (DO) is one of the important parameters in aerobic biological treatment. The amount of DO in the initial wastewater entering the treatment plant is usually zero or very small.<\/p><p style=\"text-align: justify;\"><em>Chemical oxygen demand (COD): <\/em>Chemical oxygen demand is the amount of oxygen required to oxidize all organic substances including organic substances including non-biodegradable organic substances present in wastewater and is expressed in mg\/l. . This indicator indicates the degree of contamination of wastewater containing organic matter, the ability to decompose them in the water environment, etc.<\/p><p style=\"text-align: justify;\"><em>Biochemical oxygen demand (BOD): <\/em>Biochemical oxygen demand is a characteristic quantity of wastewater pollution level by biochemical oxidizable organic substances. BOD is defined as the amount of oxygen required by microorganisms to oxidize organic matter in the dark at standard conditions of temperature and time.<\/p><p style=\"text-align: justify;\"><em>- Nitrogen content: <\/em>Nitrogen is present in wastewater in the form of organic and inorganic bonds. In domestic wastewater, most of the organic bonds are in the protein-derived substances, excess food. And nitrogen in inorganic bonds includes reduced forms NH<sub>4<\/sub><sup>+<\/sup>, SMALL<sub>3<\/sub> and oxidized form: NO<sub>2<\/sub><sup>&#8211;<\/sup> and NO<sub>3<\/sub><sup>&#8211;<\/sup>.<\/p><p style=\"text-align: justify;\"><em>- Phosphorus content: <\/em>Phosphorus in water and wastewater usually exists in the form of orthophosphate (PO .).<sub>4<\/sub><sup>3-<\/sup>, HPO<sub>4<\/sub><sup>2-<\/sup>, H<sub>2<\/sub>PO<sub>4<\/sub><sup>&#8211;<\/sup>, H<sub>3<\/sub>PO<sub>4<\/sub>) or organic polyphosphates and phosphates.<\/p><p style=\"text-align: justify;\">&#8211; <em>Indicators of total salt<\/em>: chloride (Cl<sup>&#8211;<\/sup>) can be used to assess the degree of contamination by industrial wastewater.<\/p><p style=\"text-align: justify;\">&#8211; <em>The parameters of grease, the content of heavy metal salts, radioactive substances<\/em>\u2026 assess the contamination of different types of wastewater.<\/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-d726877 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"d726877\" data-element_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\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">c.Biological criteria<\/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 class=\"elementor-element elementor-element-15ae774 elementor-widget elementor-widget-text-editor\" data-id=\"15ae774\" data-element_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 style=\"text-align: justify;\">Wastewater contains many microorganisms, including many bacteria and disease-causing bacteria. To determine the biological dirtiness of wastewater, it is analyzed for the existence of a special bacteria: Coli bacillus, although it is not a typical pathogenic bacteria, its existence proves presence of other pathogenic bacteria. The degree of biological contamination of wastewater is determined by the following criteria:<\/p><p style=\"text-align: justify;\">\u2013 Coli number standard: The volume of wastewater at least (ml) contains 1 coli.<\/p><p style=\"text-align: justify;\">Total Coliform: the number of coliform bacteria in 100ml of water.<\/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-bbe19f9 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"bbe19f9\" data-element_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\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-d743e5c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d743e5c\" data-element_type=\"section\" id=\"liet_ke\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-71d2685\" data-id=\"71d2685\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9870dbe elementor-widget__width-initial css_vien_t elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"9870dbe\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Implementation process<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-969caf0 elementor-widget elementor-widget-image\" data-id=\"969caf0\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"708\" height=\"770\" src=\"https:\/\/mekongxanh.vn\/wp-content\/uploads\/2022\/05\/sd.png\" class=\"attachment-full size-full wp-image-1576\" alt=\"\" srcset=\"https:\/\/mekongxanh.vn\/wp-content\/uploads\/2022\/05\/sd.png 708w, https:\/\/mekongxanh.vn\/wp-content\/uploads\/2022\/05\/sd-276x300.png 276w, https:\/\/mekongxanh.vn\/wp-content\/uploads\/2022\/05\/sd-600x653.png 600w\" sizes=\"(max-width: 708px) 100vw, 708px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Image. Overall diagram of urban wastewater treatment steps<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\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-045fad6 elementor-widget elementor-widget-image\" data-id=\"045fad6\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1262\" height=\"711\" src=\"https:\/\/mekongxanh.vn\/wp-content\/uploads\/2022\/05\/sd2.png\" class=\"attachment-full size-full wp-image-1580\" alt=\"H\u00ecnh. S\u01a1 \u0111\u1ed3 kh\u1ed5i t\u1ed5ng qu\u00e1t d\u00e2y chuy\u1ec1n c\u00f4ng ngh\u1ec7 XLNT\" srcset=\"https:\/\/mekongxanh.vn\/wp-content\/uploads\/2022\/05\/sd2.png 1262w, https:\/\/mekongxanh.vn\/wp-content\/uploads\/2022\/05\/sd2-300x169.png 300w, https:\/\/mekongxanh.vn\/wp-content\/uploads\/2022\/05\/sd2-1024x577.png 1024w, https:\/\/mekongxanh.vn\/wp-content\/uploads\/2022\/05\/sd2-768x433.png 768w, https:\/\/mekongxanh.vn\/wp-content\/uploads\/2022\/05\/sd2-600x338.png 600w\" sizes=\"(max-width: 1262px) 100vw, 1262px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Image. General block diagram of wastewater treatment technology line<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\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-d8355e0 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"d8355e0\" data-element_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\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-c524aed elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c524aed\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-f038d31\" data-id=\"f038d31\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e13f83d elementor-widget__width-initial css_vien_t elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"e13f83d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">List processing technology<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4aded92 elementor-widget elementor-widget-text-editor\" data-id=\"4aded92\" data-element_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 style=\"text-align: center;\"><strong><em>Board. <\/em><\/strong><em>Stages and methods of wastewater treatment<\/em><\/p><table><tbody><tr><td width=\"121\"><p><strong>The phase of wastewater treatment<\/strong><\/p><\/td><td width=\"132\"><p><strong>Method of XLNT<\/strong><\/p><\/td><td width=\"144\"><p><strong>Treatment works<\/strong><\/p><\/td><td width=\"277\"><p><strong>Treatment efficiency<\/strong><\/p><\/td><\/tr><tr><td rowspan=\"2\" width=\"121\"><p>Preliminary treatment<\/p><\/td><td width=\"132\"><p>Physical chemistry<\/p><\/td><td width=\"144\"><p>\u2013 Floating Line<\/p><p>\u2013 Absorption<\/p><p>\u2013 Coagulation<\/p><p>\u2013 \u2026<\/p><\/td><td width=\"277\"><p>\u2013 Separation of suspended substances and decolorization<\/p><\/td><\/tr><tr><td width=\"132\"><p>Chemistry<\/p><\/td><td width=\"144\"><p>- Oxidize<\/p><p>\u2013 Neutralization<\/p><\/td><td width=\"277\"><p>- Neutralization and detoxification<\/p><\/td><\/tr><tr><td rowspan=\"4\" width=\"121\"><p>Centralized processing<\/p><\/td><td width=\"132\"><p>Mechanics<\/p><\/td><td width=\"144\"><p>- Garbage bar<\/p><p>\u2013 Sand settling tank<\/p><p>\u2013 Mechanical settling tank<\/p><\/td><td width=\"277\"><p>\u2013 Separation of solid impurities, suspended sediment<\/p><\/td><\/tr><tr><td width=\"132\"><p>Biological<\/p><\/td><td width=\"144\"><p>\u2013 Creature lake<\/p><p>\u2013 Irrigated fields<\/p><p>\u2013 Filter field<\/p><p>- Oxidation channel<\/p><p>\u2013 Aeroten<\/p><p>\u2013 Biofin<\/p><p>\u2013 \u2026<\/p><\/td><td width=\"277\"><p>\u2013 Separation of suspended and dissolved organic substances, decolorization.<\/p><\/td><\/tr><tr><td width=\"132\"><p>Antiseptic<\/p><\/td><td width=\"144\"><p>\u2013 Settling tank phase II<\/p><p>\u2013 Chlorine mixing station<\/p><p>\u2013 Mixing trough<\/p><p>\u2013 Contact tank<\/p><\/td><td width=\"277\"><p>- Neutralization and detoxification of wastewater<\/p><\/td><\/tr><tr><td width=\"132\"><p>Sludge treatment<\/p><\/td><td width=\"144\"><p>\u2013 Methane tank<\/p><p>\u2013 Mud drying yard<\/p><p>\u2013 Sludge mechanical treatment station<\/p><\/td><td width=\"277\"><p>\u2013 Stabilize and dry sludge<\/p><\/td><\/tr><tr><td width=\"121\"><p>To strictly deal with<\/p><\/td><td width=\"132\"><p>Mechanics<\/p><\/td><td width=\"144\"><p>\u2013 Sand filter tank<\/p><\/td><td width=\"277\"><p>\u2013 Separation of suspended substances<\/p><\/td><\/tr><tr><td width=\"121\"><p>\u00a0<\/p><\/td><td width=\"132\"><p>Biological<\/p><\/td><td width=\"144\"><p>\u2013 Aerotank level 2<\/p><p>\u2013 Biological filter tank level 2<\/p><p>- Biology Lake<\/p><\/td><td width=\"277\"><p>- Reduce Nitrogen, Phosphorus<\/p><\/td><\/tr><tr><td width=\"121\"><p>\u00a0<\/p><\/td><td width=\"132\"><p>Chemistry<\/p><\/td><td width=\"144\"><p>\u2013 Oxidation tanks<\/p><p>- Mixing tank<\/p><p>\u2013 Reactor tank<\/p><\/td><td width=\"277\"><p>- Eliminate Nitrogen, Phosphorus and other substances.<\/p><\/td><\/tr><tr><td width=\"121\"><p>\u00a0<\/p><\/td><td width=\"132\"><p>Antiseptic<\/p><\/td><td width=\"144\"><p>\u2013 Mixing trough<\/p><p>\u2013 Contact tank<\/p><p>\u2013 Chemical station<\/p><\/td><td width=\"277\"><p>- Disinfect wastewater before going out.<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-71b98c0 elementor-hidden-desktop elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"71b98c0\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column 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\u0111\u00e3 b\u1ecb thay \u0111\u1ed5i t\u00ednh ch\u1ea5t ban \u0111\u1ea7u c\u1ee7a ch\u00fang. Th\u00f4ng th\u01b0\u1eddng n\u01b0\u1edbc th\u1ea3i \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i theo ngu\u1ed3n g\u1ed1c ph\u00e1t sinh ra ch\u00fang. \u0110\u00f3 c\u0169ng l\u00e0 c\u01a1 s\u1edf cho vi\u1ec7c l\u1ef1a &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mekongxanh.vn\/en\/dich-vu\/cong-trinh-xu-ly-nuoc-thai\/\"> <span class=\"screen-reader-text\">Wastewater treatment<\/span> Read More \u00bb<\/a><\/p>","protected":false},"author":1,"featured_media":1576,"parent":22,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"class_list":["post-927","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C\u00f4ng tr\u00ecnh x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i - C\u00f4ng ty C\u1ed5 ph\u1ea7n M\u00f4i tr\u01b0\u1eddng M\u00ea K\u00f4ng Xanh<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mekongxanh.vn\/en\/dich-vu\/cong-trinh-xu-ly-nuoc-thai\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00f4ng tr\u00ecnh x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i - C\u00f4ng ty C\u1ed5 ph\u1ea7n M\u00f4i tr\u01b0\u1eddng M\u00ea K\u00f4ng Xanh\" \/>\n<meta property=\"og:description\" content=\"Gi\u1edbi thi\u1ec7u Ng\u01b0\u1eddi ta \u0111\u1ecbnh ngh\u0129a n\u01b0\u1edbc th\u1ea3i l\u00e0 ch\u1ea5t l\u1ecfng \u0111\u01b0\u1ee3c th\u1ea3i ra sau qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng c\u1ee7a con ng\u01b0\u1eddi v\u00e0 \u0111\u00e3 b\u1ecb thay \u0111\u1ed5i t\u00ednh ch\u1ea5t ban \u0111\u1ea7u c\u1ee7a ch\u00fang. 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