Introduction. The level of water pollution in Ukraine continues to grow, despite the strengthening of requirements for the treated water, so the existing approaches to the water treatment processes control need to be revised and improved. Materials and methods. Mathematical Programming methods for formalization and solving the optimization problem are used. Computer simulation research using the program developed by the authors are applied to verify the compliance of the obtained results with the normative values and data of normal operation. Results and discussion. The optimization of processes control was performed on the example of a typical process of secondary wastewater treatment, which is used for wastewater treatment in Kyiv and nearby settlements. The secondary treatment unit consists of an aeration tank, into which air is forcibly supplied and evenly distributed, and a secondary settling tank with recycling. The problem of optimization of biological wastewater treatment control process is formalized: minimization of pollutant concentration in treated water is chosen as the main aim of optimization, air flow to aeration tank is chosen as control parameter, quadratic deviation of current concentration values from normative ones is chosen for target function. To solve the optimization task, a software module in JavaScript was developed using a client-server architecture that works in real time and allows to obtain such values of oxygen consumption in the aeration tank, which provide a minimum deviation of the concentration of pollutants from the normative values. The simulations showed that the calculated control values provide a reduction in the concentration of pollutants to the normative values within 6-10 hours, which corresponds to the data of normal operation, and the difference between the calculated and actual data does not exceed 5%. Conclusions. The obtained results allow to find a set of technological influences to ensure optimal control according to the selected criterion, and are also the basis for calculating the control system. The results of calculations can be used for short-term - up to 8 hours - forecasting of water quality indicators.
The urgency of work is connected with the need to find alternative methods of water purification from persistent organic pollutants, which will satisfy the level of quality of treated water and will meet modern environmental requirements and sanitary norms of sewage quality and electrical energy. The efficiency of the method of electrodischarge water purification from persistent organic pollutants has been experimentally determined. The SCADA-system, which provides data processing and management of water treatment processes from persistent organic pollutants, is developed. Digitizing oscillograms using the Origin Pro environment. The values of power, energy consumption for water purification from phenol are determined. Determine the efficiency of the plant to clean water from persistent organic pollutants. To visualize and control the process of water purification, a technological scheme was built in the environment of Trace Mode 6. Bibl. 13, Fig. 10. Tab. 3.
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