Water Resource Management: Intelligently Networking Measurement Values

The importance of using the right measurements comes up again and again when processes need to be optimized. That may sound easy, but it is often quite the opposite. Using the right measurements means determining what data is actually relevant for the process analysis, evaluating it with suitable mathematical models and contextualizing it constructively. If this succeeds, then it is possible to derive steps with the potential to permanently increase the efficiency of the process. In wastewater treatment, data is primarily recorded in the sewer system or at wastewater treatment plants. NIVUS GmbH from Eppingen, Baden-Württemberg, is among the market leaders in this sector with their measurement sensors. Together with WAGO, the company developed a solution that links data from distant stations into a network in a comparatively easy way.

Wastewater treatment facilities are sensitive systems involving microorganisms that require uniform conditions. In this context, harmonizing the wastewater inflow is essential – particularly in terms of the volume, concentration and composition of the waste load. This can be achieved by combining the flow measurements of the wastewater in the sewer system with hydraulic engineering systems, such as a throttle point.

If the individual measuring stations of the hydraulic engineering systems are networked within a sewer system, the data obtained here is available in real time at the control center of the wastewater treatment plant. By comparing the setpoints and actual values for the process data from the wastewater treatment facility, it is possible to calculate the optimal wastewater inflow mathematically and ensure optimal plant operation. When calculating the necessary measures, it is necessary to also consider the delay between when the settings are modified and when the changes take effect. Thus the process control begins long before the load even arrives at the wastewater treatment plant or even its individual zones. At the same time, targeted control of throttle points and other hydraulic engineering systems can make an important contribution to surface water management. NIVUS describes this approach as an integrated process control system which forms the basis for further development towards the goal of “Water 4.0.”