Description System Requirements Downloads: Installation and Start-Up Technical Support

Description  Back to Top

RITZ is a screening level model for simulation of unsaturated zone flow and transport of oily wastes during land treatment. RITZ was developed to help decision makers systematically estimate the movement and fate of hazardous chemicals during land treatment of oily wastes. The model considers the downward movement of the pollutant with the soil solution, volatilization, and loss to the atmosphere, and degradation. The model incorporates the influence of oil upon the transport and fate of the pollutant. The model is based on a series of closed-form analytical equations. The model assumes that waste material is uniformly mixed in the plow zone, that the oil in the waste material is immobile, and that the soil properties are uniform from the soil surface to the bottom of the treatment zone. Furthermore, the flux of water is considered uniform throughout the treatment site and throughout time, and hydrodynamic dispersion is insignificant and can be neglected. The partitioning of pollutant between the liquid, soil, vapor, and oil phases is described by linear equilibrium isotherms. Degradation of pollutant and oil is described as a first-order process.

RITZ is menu-driven and facilitates interactive data entry. The program produces graphical and tabular output. RITZ is distributed on a DOS-formatted disk containing source code and executable image. The documentation includes installation instructions and the EPA user's manual.

Minimum System Requirements   Back to Top

To run RITZ, you will need the following:

• IBM PC/AT or compatible
• (MS/PC) DOS version 2.0 (or higher)
• Color Graphic Adapter (CGA) board
• 640 Kb of RAM
• Math co-processor, recommended

Installation and Start-Up  Back to Top

Getting Started:

You will need unzipping (compression) software to uncompress ZIP files. If you need to load compression software on your computer, free software is available for download on the internet at the following sites:

http://www.pkunzip.com -  PKUNZIP home page
http://www.cdrom.com/pub/infozip - InfoZip Wiz

You will need Adobe Acrobat Reader to view the documentation (PDF) files. The Reader is available free from Adobe at the sites below:

http://www.adobe.com - Adobe Reader download page
ftp://ftp.adobe.com - Adobe anonymous ftp home page

Installing the Program:

Two files are available for download:

• ritz.zip (94 Kb): Program files
• ritz.pdf (607 Kb): User's Manual

1. Go to Windows Explorer and create a directory (folder) named RITZ.
2. Download RITZ.ZIP and RITZ.PDF to the new RITZ directory.
3. Unzip RITZ.ZIP to the RITZ directory.
4. Review the Users Manual (RITZ.PDF) for instruction on running the model.

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