Flocculation, sedimentation and filtration
Flocculation is used to form separable particles with the addition of flocculation agents. These flocculation compounds are batched according to volume and turbidity and controlled by using discharge control (turbidity) measures. Our proven turbidity sensor CUS 31, in combination with our Liquisys M transmitter, ensures reliable measurement, avoiding interfering influences of adhering gas bubbles. If solids are separated by way of flocculation filtration; the filtration filter must be rinsed regularly by using level measurement and differential pressure measurement. For open filtration filters, Endress+Hauser supplies diverse measuring processes to measure the level – as a rule this is done using non-contact ultrasonic measurement
Prosonic M FMU 40 is a favorite instrument here as the unit is compact, cost-effective and measures reliably due to its leading edge signal evaluation and envelope curve function. The free ToF Tool package also offers to the user optimised software support in layout, adjustment and documentation of the measuring points. Additionally, Endress+Hauser offers the pressure and differential pressure transmitter family for level measurement and pressure measurement to monitor the filter. User-friendly Prosonic M FMU 40/41 can be adjusted on site at the instrument while facilitating cost-effective integration in every control system (HART, PA, FF).
The back rinsing process is an important step as far as availability and safety of the solids separation process is concerned. Of decisive importance is not only the flushing time, but more importantly the speed with which air and water are pressed through the filters. Next to the Promag 50W for water volume measurement, Endress+Hauser supplies a range of devices to measure air volumes. In addition to traditional and proven orifice plate measurement, vortex counters and thermal mass meters are also available.
Water Storage
Water containers must meet diverse requirements in order to ensure reliable protection of the drinking water and avoid changes in the water characteristics as far as bacteria, chemical, physical and biological composition are concerned. Using a suitable remote system, an excellent monitoring function is activated when the central control panel detects pronounced changes in water level, pressure, flow rate and quality characteristics. Electromagnetic flow rate meters and conventional water counters are used for the measurement of flow rate in custody transfer applications. Endress+Hauser offers two solutions: the custody transfer certified Promag 50W which is prepared for this task at works. Custody transfer verification can be adapted at a later date. As an alternative, E+H offers to organize the certification with the calibration centre for you. You then receive the custody transfer certified and sealed instrument.
