Wastewater treatment is an important environmental problem of the national economy any country. Therefore, increasing efficiency wastewater through use innovative technologies and equipment becoming relevant. Basically, for biological from organic biogenic pollution, aerotanks with different aeration systems are used. The mass transfer mixture waste water activated sludge accounts up to 80 % op...

The energy spectrum of superfluid turbulence in the absence of the normal fluid is studied numerically. In order to discuss the statistical properties, we calculated the energy spectra of the 3D velocity field induced by dilute and dense vortex tangles respectively, whose dynamics is calculated by the BiotSavart law. In the case of a dense tangle, the slope of the energy spectrum is changed at ...

We consider the energy spectrum of a quasigeostrophic model of forced, rotating turbulent flow. We provide a rigorous a priori bound E(k)<or=Ck(-2) valid for wave numbers that are smaller than a wave number associated with the forcing injection scale. This upper bound separates this spectrum from the Kolmogorov-Kraichnan k(-5/3) energy spectrum that is expected in a two-dimensional Navier-Stoke...

We discuss the problem of the spectral function of vacuum energy. In traditional approach the ultraviolet divergencies of the vacuum energy are cancelled by imposing relations between different quantum fields and their masses. The emergent theories suggest that the microscopic degrees of the underlying quantum vacuum add to the spectral function and their contribution cancels the diverging zero...