State and quality of water in the Desna river basin (Within the Chernigiv region)
Date
2021-06-01
Journal Title
Journal ISSN
Volume Title
Publisher
Видавництво Львівської політехніки
Lviv Politechnic Publishing House
Lviv Politechnic Publishing House
Abstract
The Desna River is a tributary of the Dnieper with
a total length of 575 km within Ukraine. 468 km of them
flows through the Chernihiv region. The main pollution
sources of the water bodies in the Chernihiv region are
utilities. Continuous monitoring of the surface water state is
relevant and necessary, as it allows to give a reliable water
quality assessment, to identify the anthropogenic impact
factors and to assess the technogenic loading in order to
establish the level of water use and to develop a set of
measures to improve the state of water and the environment
in general. The materials of monitoring observations of the
water quality indicators of the Desna river for a long-term
period, as well as the materials of the Ecological passports
of the Chernihiv region concerning the water use indicators,
were used as the initial data in the work. The analysis of the
hydrochemical regime of the Desna River over a long period
was performed using a graphical method. The assessment of
the technogenic impact on the water bodies of the region was
performed using the method of assessing the efficiency of
water use based on the water consumption and sewerage
efficiency coefficients. The analysis of the content of the
water quality indicators showed that constant exceedance of
the MPC (Maximum Permissible Concentrations) in the
waters of the Desna River within the Chernihiv region was
observed in the content of phosphates and nitrites, as well as
total iron and manganese. The results of the assessment of
the technogenic impact on the water basin of the Desna River
showed that the drainage coefficient underwent certain
changes with the best indicators in 2015–2016. No sharp
fluctuations in the values of the water supply coefficient
were observed. The best values of the water use efficiency
complex coefficient were noted in 2015–2016. In general, in
recent years the efficiency of water using indicators of the
Desna River water in the Chernihiv region has corresponded
to the average indicators. The results of the assessment of
the technogenic impact on all components of the
environment in the Chernihiv region showed that in recent
years there has been a tendency to reduce the technogenic
impact complex indicator. In general, the Chernihiv region
can be attributed to the second ecological district with a
moderate technogenic loading level.
Description
Keywords
water quality, graphic method, technogenic loading, water use, drainage
Citation
Chugai A. State and quality of water in the Desna river basin (Within the Chernigiv region) / Angelina Chugai, Anastasiia Hlod, Victor Pylypiuk // Environmental Problems. — Lviv : Lviv Politechnic Publishing House, 2021. — Vol 6. — No 4. — P. 226–232.