Abstract
The paper suggests an approach to modeling the electrocoagulation process that is based on the generalization of the equations of incompressible fluid flow in nonisothermal conditions. In the model was taking into account the ratio between the values of the parameters which characterize the domination of convective and mass-exchange components of the process over diffusion. An asymptotic approximation of solutions of corresponding boundary value problems is constructed. Based on the received solutions, we conducted a computer simulation of the process of distribution of iron concentration inside the reactor that allows predicting various hydrodynamic phenomena such as internal recirculation and dead zones that affect the formation of a coagulant. The influence of current strength on the concentration of the target component at the exit from the reactor was investigated using the developed mathematical model. In addition, our findings also show the effect of the rate of heat formation from the electrodes on the efficiency of obtaining of coagulant.
Highlights
Reducing the volume of discharges of pollutants to the water reservoirs and transition of enterprises to work according to the scheme of the closed cycle of water use is the main direction of protection of the water environment
The actual direction of scientific research is the development of electrocoagulation technology for wastewater treatment, which will allow the creation of small-waste closed-end systems of water consumption at the enterprise and will be environmentally safe and economically feasible
Taking into account the relationship between the values of parameters that characterize certain components of the process leads to the complication of the mathematical model of the process. ese singularities are generated by the presence of small parameters
Summary
Reducing the volume of discharges of pollutants to the water reservoirs and transition of enterprises to work according to the scheme of the closed cycle of water use is the main direction of protection of the water environment. For the treatment of sewage of textile production, the reagent method is most often used. It requires the use of a significant number of additional chemicals, one of which is divalent iron. Among the main reasons hindering the widespread introduction of electrocoagulation into production are the technological complexity of the process and relatively high cost of electricity. In this regard, the actual direction of scientific research is the development of electrocoagulation technology for wastewater treatment, which will allow the creation of small-waste closed-end systems of water consumption at the enterprise and will be environmentally safe and economically feasible
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