IMPROVEMENT OF PERIODIC DISTRIBUTION OF WATER RESOURCES ROUTINE CONSIDERING THE ASSIMILATIVE CAPACITY OF A RECIPIENT RIVER

Abstract

One of the topical environmental problems is the pollution of river waters due to the periodic dumping of pollutants with return water from the accumulators of polluted industrial or mine waters. This problem is urgent for many enterprises of the chemical industry of the world, and in particular Ukraine. The lack of an approved methodology for the development of regulations for the periodic dumping of return water from storage can lead to violations of regulatory requirements for the quality of surface water. The purpose of the study is to improve the regulation of the periodic drainage of return water from the sludge tank at PJSC Sumykhimprom in the Psel River, taking into account the seasonal absorption capacity of the recipient river, which is necessary to ensure regulatory requirements for the quality of surface water in the control section of the return water production. In order to achieve the goal, the following tasks were solved: the minimum multiplicity of dilution of return water required for the fulfillment of regulatory requirements was calculated; the typical hydrograph of the Psel River was constructed and analyzed; the maximum allowable return water costs were determined in the months of the year; the distribution return water discharge volume was calculated, while accounting for the assimilative capacity of the recipient river. An improved algorithm was used to calculate the regulations for the return water discharge from the accumulators of polluted industrial water of OJSC Sumykhimprom. It is determined that the minimum required multiplicity of dilution in the control section of issue № 2 of JSC «Sumykhimprom» is determined by the indicator of ammonium nitrogen and is 222.3. March and April were the most favorable for the discharge of return water, while the maximum allowable return water costs for these months were respectively 0.11 and 0.08 m3/s.