Goals and capabilities of dynamical simulation
of wastewater treatment plants using STOAT

Home

Address/
Contact information/
How to find us

Scope of operations

Dynamical simulation of WWTP's

Topical side

• Achievable quality of simulation
• Additional highly loaded flow stream
• Control of balancing tanks
• Optimizing pre-treatment
• Treatment capacity
• Optimization of aeration

Assistance in starting dynamic simulation

• Input required
• General approach
• Essentials of «ASM»
• Fractionating of COD
• STOAT «levels»
• «Processes toolbox», model building

Practical tips for using STOAT

• «Build»-Menü
• «Chart control»
• Data handling

Wastewater
register

References

Downloads

The beauty of rivers and lakes

Nowadays computer technology and mathematical models are indispensable in innovative lines of business and companies. Car navigation, computer models assisting with difficult surgery, weather forecasts being used in controlling installations for production of "green" energy - examples from daily life. For the operation of wastewater treatment plants, simulation with the help of mathematical models has reached a state, where it can be profitably employed in practice. The following examples are questions, that can be answered reliably today through dynamical simulation of WWTP's:

• Forecast of the expected composition oft the effluent, leaving the WWTP, considering changing amounts and quality at the influent (see Example achievable quality of simulation)

• Investigations on whether additional flow streams can be accomodated (see Example: additional flow stream, highly loaded with ammonia) or on facility control strategies in case of trouble in the production units or breakdown of single treatment steps (e.g. whether and how collected, highly loaded wastewater can be treated in the facility without violating permit values)

• Investigations on optimizing installations (e.g. control strategies with regard to balancing tanks, see Example: control of balancing tanks, Example: COD treatment capacity, pre-treatment installations Example: optimizing pre-treatment or energy savings Example: optimizing aeration)

• Investigation of operation of a facility, while certain parts of the facility are taken offline temporarily (e.g. for planned revisions or repairs)

• “De-Bottlenecking” Example: COD treatment capacity

• Investigations of possibilities for capacity enlargement of the WWTP or improvements of process steps Example: optimizing pre-treatment

• Consideration of substances, which may inhibit or disturb the treatment of organic substrates or nitrification

• Improvement of process stability of the WWTP Beispiel Optimierung Vorbehandlung