Treatment Plant Sketcher Tool

The GWPP-K2P Treatment Plant Sketcher Tool predicts the effectiveness of a wastewater or fecal sludge treatment system at removing and reducing pathogens (viruses, bacteria, protozoa, helminths).

The tool allows you to create a custom “sketch” of a treatment system, specifying how it is configured, designed, and operated. Then, using this information as well as models based on data from scientific literature, the tool estimates the proportion of pathogens reduced by the system and lets you visualize what proportion of the pathogens end up in the liquid effluent vs. the sludge/biosolids. You can add different treatment unit processes, change the way they are configured, and change their design and operational parameters to understand what impacts these changes have on pathogen reduction.

For more information about viruses, bacteria, protozoa, and helminth pathogens, please refer to the online GWPP book, Sanitation and Disease in the 21st Century: Health and Microbiological Aspects of Excreta and Wastewater Management (