{"id":45509,"date":"2021-03-12T15:52:05","date_gmt":"2021-03-12T14:52:05","guid":{"rendered":"https:\/\/www.matelco.es\/control-of-organic-load-in-drinking-water-part-ii\/"},"modified":"2024-07-17T10:43:46","modified_gmt":"2024-07-17T08:43:46","slug":"control-of-organic-load-in-drinking-water-part-ii","status":"publish","type":"post","link":"https:\/\/www.matelco.es\/en\/control-of-organic-load-in-drinking-water-part-ii\/","title":{"rendered":"Control of organic load in drinking water – Part II"},"content":{"rendered":"

Objectives to be developed in this article:<\/h3>\n
    \n
  1. Improved efficiency of chemical addition in the coagulation-flocculation process.<\/li>\n
  2. Early detection of activated carbon filter saturation.<\/li>\n
  3. Decreased energy consumption in UV disinfection control and increased lamp life.<\/li>\n
  4. Water storage: ensure drinking water quality by continuously measuring organic contaminants prior to distribution.<\/li>\n<\/ol>\n

     <\/p>\n

    Let’s remember where we can measure the organic load in a drinking water plant<\/strong><\/p>\n

    \"measure-ami-sac254\"<\/p>\n

    The first part<\/a> of the water intake was treated as follows<\/p>\n

     <\/p>\n

    COAGULATION-FLOCCULATION-SEDIMENTATION<\/h3>\n

    Coagulation \/ flocculation followed by sedimentation \/ filtration is a process to remove suspended solids of organic and inorganic nature from drinking water.<\/p>\n

    \"coagulation-flocculation-sedimentation\"<\/p>\n

      \n
    • Monitoring of the effective removal of natural organic matter (NOM) in the coagulation and sedimentation process.<\/li>\n
    • Improved process monitoring, improving efficiency and effectiveness of chemical addition and energy consumption.<\/li>\n<\/ul>\n

      Microorganisms + NOM + disinfectant ———> Microorganisms destroyed + disinfection by-products (DPB), associated with various types of cancer. Limited in RD 140\/2003.<\/span><\/p>\n

      The following graph shows the formation of the main and most elementary of these by-products, chloroform, as a function of the chlorine applied and contact time, in a given water<\/p>\n

      \"chloroform-chloroform-applied\"<\/p>\n

       <\/p>\n

      FILTRATION<\/h3>\n
        \n
      • Monitoring of the effectiveness of the activated carbon filtration process allowing improved forecasting of the extent of filter saturation, thus minimizing unexpected downtime.<\/li>\n
      • Measurement before and after the activated carbon filter.<\/li>\n<\/ul>\n

        Tendency to decrease the difference between input and output.<\/p>\n

        \"evolution-filter-carbon-active\"<\/p>\n

        Correct levels of SAC 254nm at the outlet of the active carbon filter<\/p>\n

         <\/p>\n

        UV DISINFECTION<\/h3>\n

        Verify and optimize correct UV disinfection.<\/p>\n

        \"\"<\/p>\n

          \n
        • Process control, enhanced by monitoring the effectiveness and efficiency of UV disinfection.<\/li>\n
        • UV light with wavelength <280nm destroys the DNA of microorganisms.<\/li>\n
        • The disinfection efficiency is given by the formula:
          \nUV intensity (expressed as energy per unit area) x resistance time.
          \nThe appropriate UV dosage for each application must take into account water quality, arc tube aging, industry specifications and microbiological standards.<\/li>\n
        • Decreased energy consumption for UV disinfection control and increased lamp life<\/li>\n<\/ul>\n

           <\/p>\n

          WATER STORAGE<\/h3>\n

          \"storage-water\"<\/p>\n

            \n
          • Ensures drinking water quality by continuously measuring organic contaminants prior to distribution.<\/li>\n
          • Control of the organic load is especially important if chlorine is used as a disinfectant, as it reacts with organic substances and forms disinfection by-products that are potentially carcinogenic, such as trihalomethanes (THMs) and haloacetic acids (HAAs).<\/li>\n<\/ul>\n

            Correlation with various carbon-based parameters is also possible, provided that the composition of water pollutants remains constant.<\/p>\n

            Common correlations:<\/p>\n

              \n
            • COD chemical oxygen demand<\/li>\n
            • TOC: total organic carbon<\/li>\n
            • BOD. biochemical oxygen demand<\/li>\n<\/ul>\n

              AMI SAC 254: GUARANTEES THE QUALITY OF DRINKING WATER WITH GREATER SAFETY<\/strong><\/span><\/p>\n

                \n
              1. In surface water, the natural organic load can be very variable, so online detection can be very important to optimize treatment and ensure consistently high water quality.<\/li>\n
              2. Disinfection by-products prevention and abatement (SPD)<\/li>\n
              3. Optimization of flocculant and\/or coagulant consumption.<\/li>\n
              4. Checking the operation of decanters.<\/li>\n
              5. Status trends of activated carbon filters.<\/li>\n
              6. In case of using UV disinfection, analyze the SAC 254 to know the status of disinfection.<\/li>\n<\/ol>\n

                \"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

                Objectives to be developed in this article: Improved efficiency of chemical addition in the coagulation-flocculation process. Early detection of activated carbon filter saturation. Decreased energy consumption in UV disinfection control and increased lamp life. Water storage: ensure drinking water quality by continuously measuring organic contaminants prior to distribution.   Let’s remember where we can measure…<\/p>\n","protected":false},"author":1,"featured_media":45501,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[616],"tags":[],"class_list":["post-45509","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-drinking-water-treatment","category-616","description-off"],"_links":{"self":[{"href":"https:\/\/www.matelco.es\/en\/wp-json\/wp\/v2\/posts\/45509","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.matelco.es\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.matelco.es\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.matelco.es\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.matelco.es\/en\/wp-json\/wp\/v2\/comments?post=45509"}],"version-history":[{"count":0,"href":"https:\/\/www.matelco.es\/en\/wp-json\/wp\/v2\/posts\/45509\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.matelco.es\/en\/wp-json\/wp\/v2\/media\/45501"}],"wp:attachment":[{"href":"https:\/\/www.matelco.es\/en\/wp-json\/wp\/v2\/media?parent=45509"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.matelco.es\/en\/wp-json\/wp\/v2\/categories?post=45509"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.matelco.es\/en\/wp-json\/wp\/v2\/tags?post=45509"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}