OPERATING PRINCIPLE The non-pressurised filter tank features an open raw water jetting system for intensive oxygen enrichment. Air degassing in the pipeline network is prevented, eliminating the need for an aeration compressor. The treated water is then pumped into the supply tank by an additional pump, depending on the pressure. The backwashing of the filter media must be carried out regularly – either manually or fully automatically, depending on consumption. The maximum flow rate per hour through the filter system depends on the quality of the raw water and the desired level of water treatment. In addition to the water treatment system, we recommend using our in-house compo-nents, which ensure perfectly matched operation. FLOW DIAGRAM TECHNICAL DATA OWR 500/ 1850 OWR 650/ 1850 OWR 800/ 1900 OWR 900/ 2000 OWR 1000/ 2300 • Diameter (mm) 500 650 800 900 1000 • Height (mm) 1900 1900 1900 2000 2300 • Minimum room height (mm) 2000 2000 2000 2100 2400 • Contents (litres) 300 500 750 1000 1400 • Max. flow rate (m3/h)* 2.5 4.0 5.5 7.5 10.0 • Required clean water volume in the pressure tank (l) 500 750 1000 1000 1500 • Booster pump max (m3/h-bar) 2.5-6 4.0-6 5.5-6 7.5-6 10.0-6 • Clean water outlet (inch) 2 2 2 2 2 • Sludge water outlet (mm) 70 70 100 100 100 * depending on the iron and manganese content, individual design necessary The diagram shows an example of the possible composition of an open water treatment system 59
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