Modeling and research of the biological water treatment process considering the temperature regime
Journal Title: Вісник Житомирського державного технологічного університету. Серія: Технічні науки - Year 2019, Vol 83, Issue 1
Abstract
Household waste water contains mineral and organic pollution, while industrial varies both in composition and concentration, depending of the origin. Whatever type, all waste water required to be cleaned as it contains pollutants which far exceed the permissible concentration limits. Despite the large number of investigations of the corresponding processes, the actual task is to study the interaction of active sludge with pollution under the influence of external factors such as variable temperature, etc. Another important task is the prediction of process parameters waste water treatment based on the information with incomplete data at the design stage of the purification system. The automation of processes occurring in the reactor, in particular the use of bacteria with the optimal age, the creation of conditions for the maximum absorption capacity of active sludge, minimization of economic costs are integral components of modern systems. The mathematical model of aerobic waste water treatment is developed, which describes the processes occurring in the treatment plant taking into account the mutual influences of the characteristics of the process on the characteristics of the environment. The influence of external factors for the temperature calculation on the basis of the equation of thermal balance and the laws of thermodynamics is taken into account. The solution of the corresponding model problem using the m-function pdepe of the Matlab software is found. The influence of temperature of aqueous environment, concentration of oxygen on the absorbing capacity of active sludge is investigated. The dependence of bacterial activity from water temperature is shown.
Authors and Affiliations
A. P. Safonyk, I. M. Targoniy, P. O. Lakus
Features of the elastic wheel as a sophisticated mechanism
The kinematics and dynamics of the vehicle, road safety depend on the interaction of the elastic wheel with the supporting surface. The paper analyzes the features of the elastic wheel of a car and identifies such indica...
Multivariate statistical modeling in the study of processes in the technical processing of metals
The dependences of the wear resistance of the cutting tool on the machining regimes in the SDS are established. Multifactor mathematical modeling was used to study the complex process of metal machining taking into accou...
Theoretical substantiation of the working body for soil alignment
A theoretical justification of the leveling tillage working body was carried out, in particular, its dynamic analysis and the main technological parameters were substantiated, the dynamics of oscillatory movements were c...
The structure of intelligent agent projecting and the possibilities of its execution
Most of today’s information systems are not designed for independent decision making, behavior of such systems should be incorporated at the design stage. Entering the conditions that are not included by system developer...
The automodulating mode of crystallization in the technology of low-temperature synthesis of GахIn1-хР- GaAs heterostructures
The Cahn-Hillard equation, previously obtained for describing the process of decomposition of metallic substitution solid solutions, is adapted to describe the process of spinodal decomposition of semiconductor solid sol...