MATHEMATICAL MODELING IN WATER TREATMENT PROBLEMS

Problem statement. Analysis of the treatment facilities efficiency in sewerage at stage their design is great importance. Also, structures’ reconstruction or operation adjustment under different load conditions, it necessary to know water areas facilities. Such information makes possible rationally operate For solving problems this class, most effective tool use numerical modeling method. The work considers development models set for class. Methodology. Two fundamental are used solve velocity field determination wastewater flow sewage plant. first a model vortex-free motion an incompressible fluid. second Navier-Stokes equations written Helmholtz variables. mass transfer equation determine impurity concentration fields plants, which takes into account velocity, diffusion and presence emission sources. Material balance substrate activated sludge calculate process biological treatment. Finite-difference schemes build that allow calculating hydrodynamics distribution facility. Euler method solution material equations. Results. Numerical were built, develop complex computer programs. These programs real-time analysis Scientific novelty. have been developed investigating «settler» type aeration tanks, is, significant class practice. Practical value. calculation time plant with geometric shape few seconds. This allows usinge serial calculations project organizations daily work.