{"id":7501,"date":"2020-06-23T13:47:50","date_gmt":"2020-06-23T11:47:50","guid":{"rendered":"http:\/\/www.hydrograv.com\/?page_id=7501"},"modified":"2022-07-07T09:42:29","modified_gmt":"2022-07-07T07:42:29","slug":"entire-wwtps","status":"publish","type":"page","link":"https:\/\/www.hydrograv.com\/en\/services\/simulation\/entire-wwtps\/","title":{"rendered":"Entire WWTPS"},"content":{"rendered":"
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Simulation of entire Waste Water Treatment Plants<\/span><\/strong><\/span><\/p>\n

What are the benefits of hydrograv simulations?
\n<\/span><\/strong><\/span><\/p>\n

    \n
  • Virtual pre-launching of the entire WWTP already in the planning phase<\/li>\n
  • Analysis of hydraulic interactions between individual treatment steps<\/li>\n
  • Proof of various operating scenarios<\/li>\n<\/ul>\n

    Example: Support in the planning of the WWTP Emscherm\u00fcndung \u2013 one of the largest plants in Germany<\/strong><\/p>\n

    (Qmax = 16,5 m\u00b3\/s, 1.6 million PE)<\/p>\n

      \n
    • Simulation of serveral treatment steps as part of the planning for reconstruction and optimisation of the entire WWTP:\n
        \n
      • Pumping station
        \n<\/strong><\/p>\n
          \n
        • comparison of variants of different inflow designs to the screw pump station, investigation of different operating modes<\/li>\n<\/ul>\n<\/li>\n
        • Bar screen
          \n<\/strong><\/p>\n
            \n
          • functionial demonstration, especially the hydraulic distribution and deposition<\/li>\n<\/ul>\n<\/li>\n
          • Grit chamber
            \n<\/strong><\/p>\n
              \n
            • comparison of different variants, e.g. 6 or 8 lines in operation, optimization of the geometry and the operation mode, maximization of the separation rate<\/li>\n<\/ul>\n<\/li>\n
            • Primary clarifier
              \n<\/strong><\/p>\n
                \n
              • comparison of different variants, e.g. circular or rectangular design, test of grease separation<\/li>\n<\/ul>\n<\/li>\n
              • Secondary clarifier
                \n<\/strong><\/p>\n
                  \n
                • extensive comparison of variants: test of different scraper systems, sludge hopper design, inlet design, number of required tanks, proofs of revision states and construction phase<\/li>\n<\/ul>\n<\/li>\n
                • Distribution channels and structures<\/strong>\n
                    \n
                  • Ensuring uniform hydraulic distribution, avoidance of depositions, e.g. by hydraulic correct installing agitators or aeration, uniform distribution of the distribution of MLSS, verification of hydraulic losses<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                    \"\"<\/strong><\/p>\n

                    Figure:<\/strong>\u00a0\u00a0 Entire model constisting of bar screen, grit chamber and primary clarification. Water level at maximum inflow.<\/p>\n

                    \"\"<\/strong><\/p>\n

                    Figure:<\/strong>\u00a0\u00a0 Entire model consisting of bar screen, grit chamber and primary clarification. Streamlines with velocities at maximum inflow<\/p>\n

                    \"\"<\/strong>
                    \nFigure:<\/strong>\u00a0\u00a0 Pumping station incl. bar screens. Exemplary comparison of variants. Flow velocities along the water level at stormwater inflow. Six out of eight pumps in operation.<\/p>\n

                    \"\"<\/strong><\/p>\n

                    Figure:<\/strong>\u00a0\u00a0 Primary clarification. Exemplary comparison of variants. Streamlines with velocities.<\/p>\n

                    \"\"<\/strong><\/p>\n

                    Figure:<\/strong>\u00a0\u00a0 Grit chamber. Exemplary illustration of a variant. Streamlines with velocities.<\/p>\n

                    \"\"<\/strong><\/p>\n

                    Figure:<\/strong>\u00a0\u00a0 Grit chamber. Separation rate of different classes of materials for different variants.<\/p>\n

                    \"\"<\/strong><\/p>\n

                    Figure:<\/strong>\u00a0\u00a0 Inlet channel to activated sludge tank, exemplary analysis of a variant. Concentrations close to the bottom normalized with the mean basin concentration (left). Flow velocities close to the bottom (right). Note: For better legibility the basin width is shown stretched 4 times.<\/p>\n

                    \"\"<\/strong><\/p>\n

                    Figure:<\/strong>\u00a0\u00a0 Inlet channel to the aeration tanks, exemplary distribution of the inflow concentration.<\/p>\n

                    \"\"<\/strong><\/p>\n

                    Figure:<\/strong>\u00a0\u00a0 Inflow channel secondary clarification, exemplary evaluation of an investigated variant. Standardized sludge concentration 5 cm above the basin bottom. Above dry weather, below rainy weather.<\/p>\n

                    \"\"<\/strong><\/p>\n

                    Figure:<\/strong>\u00a0\u00a0 Secondary clarification, exemplary analysis of a variant showing the sludge concentration at maximum inflow.
                    \n.<\/span><\/p>\n<\/div><\/section><\/div><\/div><\/div><\/main><\/div><\/div>