VTEI / pollution

pollution

Dynamics of micropollutant loads into water supply reservoirs Vír I, Opatovice and Ludkovice

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Pesticides are still an important group of substances involved in surface water pollution. Their increased occurrence in watercourses in the agricultural landscape is mainly linked to rainfall-runoff conditions, types of cultivated crops, and methods of agricultural management. In order to capture these factors, passive sampling techniques were chosen for the assessment of the load of these substances in selected catchments of water supply reservoirs in the administration of Povodí Moravy State Enterprise. These techniques consist of continuous exposure for several weeks with gradual (integrative) capture of pollution on suitable sorbents. The POCIS (polar organic chemical integrative samplers) were chosen in this work – widely used samplers suitable for capturing polar organic substances. They were applied in eight consecutive sampling campaigns to cover the entire growing season. The aim was to assess the spatio-temporal dynamics (in monthly steps) of selected pesticides and their metabolites into five water supply reservoirs. Due to the scope of the obtained data, this article is focused on the presentation of the results of tributaries into water supply reservoirs Vír I, Opatovice, and Ludkovice, which were monitored in 2021. When the sampling rate Rs was published, it was possible to recalculate the pollution captured by the passive sampler to average concentration during exposure. The results showed which tributaries into the reservoirs were loaded by these hazardous substances in the individual periods of the growing season. The results can be compared with the type of crops grown in a given year.

BÍLINA – The story of the purple river

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Ibra Ibrahimovič (1967) has been photographing his black-and-white series ”Střepy severních Čech” (Pieces of Northern Bohemia) since the early 1990s. He became known to the public as a photographer of the struggle to save the village of Libkovice in 1993, and later in 2003 with an award-winning series about farmer Rajter.
With the support of the Ministry of the Environment and TGM WRI, the book Příběh fialové řeky (The Story of the purple river) was published in 2015, describing through photographs the turbulent fate of the Bílina river, perhaps the only river in our country that is said to have burned due to pollution. Ibra Ibrahimovič takes photographs mainly on black and white film, 6 x 12 cm, and thus tries to follow the pictorial message of Josef Sudek and Josef Koudelka, who recorded the local landscape in a similar way in the 1970s and 1990s.
In his wanderings around the Bílina river, he looks for places that tell of man‘s relationship to this river, as well as those that reflect its turbulent history. His goal is to testify to what this river, which flows in the vicinity of surface lignite mines and chemical plants, looks like today, because from his childhood, he remembers it as a dark sewer stinking of phenols.

SMART WATER

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”SMART WATER” is a project funded from the Norwegian Financial Mechanisms as part of the REINE programme, running from 2nd August 2021 to 30th June 2022.
The project is coordinated by the non-profit research and training centre METCENAS, o. p. s., its partner being the organisation AVAS, s. r. o., which is responsible for the dissemination and delivery of the results.

Vodní květ

Balance evaluation of selected water quality indicators on the tributaries of Vranov reservoir

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Most of the reservoirs in the Czech Republic have been built as multifunctional reservoirs, with the basic functions being storage and protection. The way the catchment area upstream of a reservoir is used has a significant impact on water quality. Pollution sources can be divided into point, area, and diffuse sources. Being continuous or recurrent, point pollution is not significantly influenced by meteorological factors and it is linked to narrowly delimited areas such as settlements, wastewater treatment plants (WWTPs), industrial plants, agricultural facilities, etc. Area pollution is difficult to observe as it is irregular and depends on meteorological, soil, morphological, and vegetation characteristics [4]. The category of diffuse sources usually includes small diffuse point sources of pollution, namely municipal, agricultural, industrial, as well as traffic pollution, leachates from landfills, etc.

Space-time dynamic of pesticide loading in the drinking water reservoir Švihov

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The article deals with space-time dynamic of non-polar and polar compounds load into the drinking water reservoir Švihov in Želivka river basin during the whole vegetation season by passive sampling techniques. The monitoring on the nine tributaries of the Švihov water reservoir and on the raw water inlet to the Želivka drinking water treatment plant took place for eight months from April to November 2018.