SASS and SASSPro Wastewater Modelling Software ---------------------------------------------- SASS is a Windows 3.1 introductory modelling program for Steady-state Activated Sludge Simulations. Based on a fully aerobic system, SASS provides mixed liquor, biomass, oxygen, nitrification and effluent calculations with selectable primary wastewater characteristics, temperature coefficients and kinetic constants. SASSPro is an advanced version providing extended modelling facilities across 8 primary plant configurations, with selection from over 50 process parameters. Additional facilities include denitrification, phosphorus and alkalinity calculations, sludge disposal costing and aeration power requirements. Reactor volumes, recycle rates, oxygen levels and wastewater characteristics are fully configurable, with dynamic re-calculation of Rsm (minimum sludge age for nitrification) and optimum MLSS 'a' recycle flow rates. Both SASS and SASSPro are designed for process configuration comparisons, process optimization and sensitivity studies, as well as being excellent mediums for maintaining in-house process familiarization. Both are used in industry and academic wastewater training courses, and by major municipal authorities and consultants in the wastewater industry. In addition to comprehensive operation manuals, these programs also include an extensive activated sludge reference manual. The Activated Sludge Resource Book provides a step by step training program on activated sludge processes for wastewater treatment - including principles of operation, review of conventional systems, process characteristics, stoichiometry of biological reactions, process monitoring, kinetics of substrate removal, nitrification and denitrification, and introduction to modelling techniques. Further details on both programs are available from: http://www.bendigo.com.au/~sti/wwater/wwater.html For those interested, this site also contains one of the most extensive lists of resources on wastewater processes available on the internet. ------------------------------------------------------------------------ Science Traveller International - http://www.bendigo.com.au/~sti/ PC software solutions for scientific and high technology applications... email: johnd@sti.bendigo.com.au