Читать книгу Automation of Water Resource Recovery Facilities - Water Environment Federation - Страница 178

Static process models are valuable teaching tools in that they allow users to change one process variable and see how it affects process results. To be effective, the interface should be user friendly and the format should enable the user to easily see the process responding to changes. Successful models typically are relatively simple spreadsheets, frequently developed in Microsoft Excel. Basically, if one can draw a graph of the process, he or she can develop a useful model.

These models have been developed for many applications (e.g., chemical-feed controls; anaerobic- or aerobic-digester loads; and sludge age, mean cell residence time, and food-to-microorganism ratio calculations).