Many characteristic values relate to the load. PROVI ENERGY automatically takes the laboratory data and the flow rate values from the process databases and uses them to calculate the Load as freight and population value. The load can be created for various parameters, e.g. COD, BOD5 or TKN.
PROVI ENERGY is also ideal for exporting values from the process databases or values calculated from them directly to Excel. This is often used, for example, to obtain 15-minute values for electricity consumption.
Characteristic values quickly show over a selected period of time the specific energy consumption of a system or process stage. With the Ventilation and the overall system, this value is related to the load in population equivalents [kWh/E/a]. With Pumping stations this value refers to the delivered quantity and the delivery head [Wh/m3/m]. Further characteristic values provide information on the effectiveness of the Power generation from the sewage gas.
DWA-A 216 provides functions for calculating the ideal power consumption for the typical process stages of a wastewater treatment plant. On this basis, PROVI ENERGY calculates the ideal power consumption for many stages, e.g. pumping stations, blower station, sludge dewatering, recirculation, etc. This is compared with the real electricity consumption from the online measured values. This provides an overview of where energy savings are still possible.
Characteristic values show the specific energy consumption of the Complete system or individual stages. One level down, you can see the power consumption of the Process stages in a pie chart. If you click on a pie chart, you will see the power consumption of the Machines of this level. Here you can go into even more detail. If you click on a machine, you get the Details of this machine.
PROVI INTERPRET allows you to go into even more detail, right down to the raw data of a measured value. Here, for example, you can see the power consumption of a fan over the course of the day.
The Energy Flow Diagram shows very clearly the distribution of the electricity flow from generation to consumption in the individual process lines. This diagram is generated automatically in PROVI ENERGY. It can be exported as a graphic or as an eSankey format. This allows the diagram to be used in the application eSankey for modifications.
PROVI ENERGY also helps to identify the causes and opportunities for saving electricity. For this purpose, the values are prepared in meaningful diagrams . Here the Pump characteristic value [Wh/m3/m] is plotted for each day over the daily flow rate. The characteristic value and therefore the specific energy consumption varies greatly at low flow rates. The value is between 6 and 12 Wh/m3/m. To find the cause of this very different operating behaviour, you can now look at the details by selecting the operating points.
Once you have selected an operating point for a day, you can display the details for this operating point. This allows you to show the Operating behaviour on different days with similar framework conditions and compare them.
15-minute values for electricity consumption are important for coordination with the distribution grid operator. In PROVI ENERGY, each measured value can also be calculated as a 15-minute value. Here the 15-minute values of electricity consumption as Carpet diagram is displayed. You can see the scale for the observation period on the left and the time at the top. Each row is therefore a day, each column a time. You can see that photovoltaics makes a major contribution to minimising electricity consumption in summer.
In the INTERPRET area, you can create illustrative Energy balances . This shows the generation behaviour and CHP and PV with the total energy consumption of the wastewater treatment plant and the content of the gas storage tank. Below you can see when energy was drawn (red) and when it was fed into the grid (green).
All coupled measured values (not just energy values) can be compiled and saved as required in the INTERPRET area. A particular strength of the graphical evaluation is that you can compile and analyse a wide variety of constellations very quickly and easily. To do this, simply select the desired measured variables in the structure tree.
PROVI ENERGY contains a series of reports.
The reports can be exported to Excel or Word.
With the help of the load, the system master data and other laboratory and process values, the sludge age and the required MLSS concentration is calculated. This shows how much the MLSS concentration can change between the seasons.
Finally, in a Dashboard diagrams can be freely customised. This means that every user has an individual overview of their important information on one interface.
INTERPRET was developed specifically for the flexible evaluation of detailed data series. A particular strength of INTERPRET is that you can quickly compile different values. This makes it very easy to visualise and evaluate process correlations.
The energy balance of a wastewater treatment plant is an important result that should be checked regularly, e.g. for the function of load management. Such compilations can be saved as a configuration and are then displayed above the graphic.
Here you can also see in the structure tree on the left how freely the data can be selected.
To compare several values, there are various arrangement options available, e.g. the grid.
Sometimes it is useful to stack data, as here NH4 and NO3, to estimate the N-total. The oxygen concentration is shown in the upper part of the display.
INTERPRET is also well suited for exporting data. All selected and displayed data can be exported to Excel.
The detail window shows the data at the mouse pointer position.
