WEAP BASED ASSESSMENT OF SELF-PURIFICATION PROCESSES IN THE DNIPRO RIVER WITHIN THE CITY OF DNIPRO: ECOTECHNOLOGIES AND DIGITAL WATER MANAGEMENT
DOI:
https://doi.org/10.15421/jchemtech.v34i1.339316Keywords:
self-purification; Dnipro River; water quality; pollution indicator; BOD; COD; water quality modelling; WEAP; environmental protection measures; digitalization.Abstract
This article examines the self-purification processes of the Dnipro River within the Lower Dnipro sub-basin using the WEAP (Water Evaluation and Planning system) modelling environment. The study area is characterized by complex hydrogeological conditions and limited infiltration recharge. Through simulation modelling, the efficiency of biochemical decomposition of organic matter was calculated, and the dynamics of key hydrochemical indicators – biochemical oxygen demand, chemical oxygen demand, and dissolved oxygen – were assessed at control sections located upstream and downstream of the city of Dnipro. The results reveal a extremely low level of natural recovery of the aquatic environment, indicating significant impacts from industrial and municipal discharges, climate change, and the inflow of decomposition products from munitions during military actions. The study underscores the necessity of implementing a comprehensive suite of environmental protection measures – including the application of nature-based solutions, modernization of treatment facilities, digitalization, and automated monitoring – to enhance the river’s self-purification capacity and ensure the sustainable use of water resources. The work also highlights the need for integrated management of the Dnipro River’s water resources within the city of Dnipro in accordance with the provisions of the EU Water Framework Directive, aimed at supporting the region’s sustainable ecological development.
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