OPERATING PRINCIPLE Depending on the application, a pump conveys the raw water from the well to the surface. Through forced aeration, the dissolved and undesirable substances in the water are oxi-dised. The aerated raw water then flows from top to bottom through the filter bed, where all solid particles are removed. The automatic backwash system ensures regular cleaning of the filter system. In this process, clean water from the downstream pressure tank flows from bottom to top through the filter bed. The maximum flow rate per hour depends both on the quality of the raw water and the desired treatment level. In addition to the water treatment system, we recommend using our inhouse components, which ensure perfectly matched operation. TECHNICAL DATA WR 450/ 1800 WR 550/ 1800 WR 650/ 1800 WR 800/ 1800 WR 800/ 2300 • Diameter (mm) 450 550 650 800 800 • Height without ventilator (mm) 1800 1800 1800 1800 2300 • Minimum room height (mm) 2000 2000 2000 2000 2500 • Contents (litres) 240 350 500 750 1000 • Operating overpressure (bar) 6 6 6 6 6 • Max. flow rate (m3/h)* 2.4 3.6 5.0 7.5 10.0 • Required clean water volume in the pressure tank (l) 300 500 750 1000 1000 • Raw and sludge water connection (inch) 2 2 2 2 2 • Clean water connection (inch) 1 1 11/4 1 1/2 1 1/2 * depending on the iron and manganese content, individual design necessary The diagram shows an example of how a closed water treatment system can be configured. FLOW DIAGRAM 55
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