Environmental Technologies Design Option Tool (ETDOT)
Models to evaluate and design systems for contaminant removal
The Environmental Technologies Design Option Tool (ETDOT) is a suite of software models that provides engineers with the capability to evaluate and design systems that use granular activated carbon or ion exchange resins for the removal of contaminants, including PFAS, from drinking water and wastewater.
Information generated from ETDOT models will provide states and utilities with a better understanding of the fundamentals of carbon adsorption and what that means to the operation, performance, and costs associated with this technology.
On this page:
Included Software and Compatibility
The ETDOT models are Windows-based programs that will work with all versions of Windows.
Software included in ETDOT:
- Adsorption Design Software for Windows (AdDesignS) Version 1.0
- Advanced Oxidation Process Software (AdOx) Version 1.0.2
- Aeration System Analysis Program (ASAP) Version 1.0
- Biofilter Design Software Version 1.0.27
- Continuous Flow Pore Surface Diffusion Model for Modeling Powdered Activated Carbon
- Adsorption Version 1.0
- Dye Study Program (DyeStudy) Version 1.0.0
- Predictive Software for the Fate of Volatile Organics in Municipal Wastewater Treatment Plants (FaVOr) Version 1.0.11
- Ion Exchange Design Software (IonExDesign) Version 1.0.0
- Software to Estimate Physical Properties (StEPP) Version 1.0
Disclaimer: Any mention of trade names, manufacturers, or products does not imply an endorsement by EPA. EPA and its employees do not endorse commercial products, services, or enterprises
Applications
Even though carbon adsorption can be an effective treatment technology for removing organic compounds, such as PFAS, from water, it can be expensive or may not achieve desired removal objectives if improperly designed. Proper full-scale design of this adsorption process typically results from carefully controlled pilot-scale studies that are used to determine important design variables, such as the type of adsorbent, empty bed contact time, and bed configuration. However, these studies can be time consuming and expensive if they are not properly planned.
Information generated from the ETDOT models can be used to help design pilot treatment systems and provide a first-cut prediction of full-scale results.