The WWTP of Munich I (2 million EP) will be renewed in major areas of the biological stage in the next few years . Currently, the design and detailled engineering is in process.
Our projects unify experience, expert knowledge and good teamwork. All of them can serve as a reference.
Engineering association RGBM Schlegel / Dr.-Ing. SteinleProject name
Dynamic simulation of the WWTP Gut Großlappen (München I)The problemThe WWTP is a two-stage, highly complex plant with bypass and various recirculations. This complexity makes it difficult to use standard calculation methods. On the other hand, this complexity offers a wide range of possibilities to improve the cleaning process and the energy efficiency. A dynamic simulation model was developed to assist in the planning process and to give an outlook on the effect of different operating strategies.Our solution
The first step was to create and calibrate a model of the existing plant. For the calibration additional measurements were carried out in order to guarantee the highest possible accuracy of the simulation. At the same time, a model for the planned WWTP was developed.
Using the model of the existing plant, the simulation parameters have been calibrated and validated for a period of two years. These parameters have been used further for simulation of the new plant.
Based on that, extreme events and different incidents could be simulated, combined with various control and regulation strategies. Also the plant behaviour during the reconstruction phase was simulated.
More than 20 scenarios have been simulated, showing e.g. the COD, NH4-N and NO3-N concentrations in the effluent as well as energy requirements for pumping and aeration and the gas production.
The results will contribute to the process stability of the planned WWTP. At the same time, recommendations for the ideal operation of the biological stages have been developed, also taking the energy consumption into account.
Furthermore, the dynamic simulation provided more accurate data for the dimensioning and design of different system components, e.g. diffusers and turbo compressors.