scholarly journals Assessment of the relationships between elements and organic matter in water after a large landslide in the Bureyskoye reservoir (Russia)

2020 ◽  
Vol 192 ◽  
pp. 04019
Author(s):  
Tatiana Kozhevnikova ◽  
Lyubov Kondratyeva ◽  
Evgeniya Golubeva ◽  
Ilya Manzhula
Keyword(s):  
Water Quality ◽  
Hydrological Regime ◽  
Hydroelectric Power Plant ◽  
Aquatic Organisms ◽  
Anthropogenic Factors ◽  
Hydroelectric Power ◽  
Reservoir Flow ◽  
Chemical Composition Of Water ◽  
Large Landslide ◽  
Landslide Body

The article provides information on statistical approaches to identify the dominant factors that influenced the water quality in the Bureyskoye reservoir after a large landslide in December 2018 blocked access to a hydroelectric power plant. To restore the hydrological regime, blasting operations were carried out using trinitrotoluene and hexogen. The main indicators of water quality were volatile organic matters and elemental composition that varied along different banks above and below the landslide body and under the influence of explosives. In water samples from the artificial canal after the restoration of the reservoir flow, the content of Fe, Mn, Al, Cu and Zn remained at a low level and did not reach the initial values established prior to the blasting operations. However, an increase in the content of Pb by 7 times and Hg by 80 times was noted. The presence of methanol and methylated benzene derivatives in water could stimulate the formation of more toxic methylmercury, posing a risk to aquatic organisms. Correlation analysis was used to process the obtained data which made it possible to differentiate the contributions of natural (landslide, river tsunami) and anthropogenic factors (blasting) to the change in the chemical composition of water in the reservoir.

scholarly journals Assessment of the Dnieper Alluvial Riverbed Stability Affected by Intervention Discharge Downstream of Kaniv Dam

Water ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1104
Author(s):  
Oleksandr Obodovskyi ◽  
Michał Habel ◽  
Dawid Szatten ◽  
Zakhar Rozlach ◽  
Zygmunt Babiński ◽  
...  
Keyword(s):  
Water Discharge ◽  
Hydrological Regime ◽  
Hydroelectric Power Plant ◽  
Hydroelectric Power ◽  
Channel Stability ◽  
Catchment Scale ◽  
Channel Processes ◽  
Mean Velocity ◽  
Erosion Processes ◽  
Unconsolidated Material

Along the middle reaches of the Dnieper River in central Ukraine, braided riverbeds with many islands have developed in alluvial valleys. In the 1970s, six dams were commissioned, and respective monitoring infrastructure was installed. Riverbanks and valley floors composed of unconsolidated material have much lower bank strengths and are susceptible to fluvial erosion and bank collapse, particularly during the release of high flow volumes from hydropower dams. The regulation of the Dnieper River along a cascade of storage reservoirs caused significant changes in its active river channel and hydrological regime. In order to estimate channel stability downstream of the Kaniv reservoir, we conducted an analysis of the hydraulic conditions in terms of changes in flow velocity and propagation of waves caused by intervention water discharges from the Kaniv Hydroelectric Power Plant (HPP). In this paper, we assess the hydromorphological parameters of the studied river reach as well as the characteristics of the related erosion and deposition zones. Therefore, a monitoring framework for channel processes (MCP) downstream of the Kaniv HPP was installed. The analysis of the intervention discharge parameters was conducted based on measurements from July 2015. Channel stability was expressed by the following factors: Lohtin’s number (L), Makkaveev’s (Kc) factor of stability, and a complex index of stability (Mx) by Grishanin. This study shows that the velocity of artificial wave propagation may reach a speed of up to 74.4 km·h−1. The wave propagates for a distance of approx. 45 km within 65 min at a mean velocity of 37.4 km·h−1. The L, Kc, and Mx indicators used in this work showed that when water discharge increased (e.g., during typical peak-capacity operation), the channel becomes unstable and sediments are subject to erosion processes. The riverbed stability indicators clearly illustrate that an increase in parameter values is not dependent on the distance to the dam. The results are valuable for sustainable sediment management at catchment scale and hence, directly applicable in water management.

scholarly journals Water quality estimation at the gauge station of the Ingulets River, town of Snigurivka, by hydrochemical parameters

2017 ◽  
pp. 123-136
Author(s):  
I.A. Shakhman ◽  
N.S. Loboda
Keyword(s):  
Water Quality ◽  
River Flow ◽  
Petroleum Products ◽  
Anthropogenic Factors ◽  
Ecological State ◽  
Quality Estimation ◽  
Hydrochemical Parameters ◽  
Factors Affecting ◽  
Chemical Composition Of Water ◽  
Gauge Station

The article contains the results of water quality estimation by hydrochemical parameters at the gauge station of the Ingulets River, town of Snigurivka, during the observation period of  2001-2014 based on modern calculation methods. The analysis of anthropogenic factors affecting change of quality of surface water of the Ingulets River was used. It was found that by hydrochemical parameters waters are mostly "contaminated", "very contaminated", or "catastrophically contaminated". River flow appears to be the main source of water supply for the population and the economy. There is an acute deficit of water in the South of Ukraine. Because of use of rivers for economic activity of  Mykolaiv region estimation of the ecological state of the Ingulets River should be carried out. Starting from 2010 a tendency of quality improvement via reducing of petroleum products concentration was discovered. Dynamics of changes pollutants’ concentration shows a decrease of petroleum products’ concentration but over the last years the chemical composition of water in the river has not significantly improved, ability of the river to cleanse and restore itself does not re-turn. The ecological state of the river is characterized as an ecological regress. There is a necessity of further research using modern methods of complex estimation of surface waters sources’ quality.

scholarly journals EVALUATION OF SENTINEL-2/MSI IMAGERY PRODUCTS LEVEL-2A OBTAINED BY THREE DIFFERENT ATMOSPHERIC CORRECTIONS FOR MONITORING SUSPENDED SEDIMENTS CONCENTRATION IN MADEIRA RIVER, BRAZIL

2020 ◽  
Vol XLII-3/W12-2020 ◽  
pp. 243-248
Author(s):  
D. R. A. e Santos ◽  
J. M. Martinez ◽  
T. Harmel ◽  
H. D. Borges ◽  
H. Roig
Keyword(s):  
Remote Sensing ◽  
Near Infrared ◽  
Atmospheric Correction ◽  
Hydrological Regime ◽  
Hydroelectric Power Plant ◽  
Suspended Sediments ◽  
Sediment Concentration ◽  
Hydroelectric Power ◽  
Madeira River ◽  
Sentinel 2

Abstract. Data provided by spatial sensors combined with remote sensing techniques and analysis of the optical properties of waters allow the mapping of the suspended sediment concentration (SSC) in aquatic bodies. For this, estimation models require data with the lowest possible amount of atmospheric artifacts. In this study we compared the water remote sensing reflectance (Rrs) of the Santo Antônio Hydroelectric Power Plant reservoir in Porto Velho-RO, Brazil, after applying three different atmospheric corrections algorithms in Sentinel-2/MSI imagery products. The atmospheric corrected reflectances of the MODIS sensor were also used for reference. SSC was calculated with models based on the red and near-infrared (NIR) bands over three distinct regions of the reservoir. Reflectance data showed significant variations for Sentinel-2, bands 4 and 8a, and MODIS, bands RED and IR, when different atmospheric correction algorithms were used. SSC maps and estimates were produced to show sediment load variation as a function of hydrological regime. The analyzes showed that the SSC estimates done with Sentinel-2 / MSI satellite images using GRS (Glint Remove Sentinel) atmospheric correction presented an average difference of 27.3% and were the closest to the in situ measurements. SSC estimates from MODIS products were around 34.6% different from estimates made using the GRS atmospheric correction applied to Sentinel-2 / MSI products.

scholarly journals Kualitas Fisik dan Kimia Sungai Citarum yang bermuara ke Waduk Cirata di Wilayah Kabupaten Cianjur

2019 ◽  
Vol 19 (3) ◽  
pp. 628
Author(s):  
Bramantiyo Eko Putro ◽  
Isma Masrofah
Keyword(s):  
Water Quality ◽  
River Flow ◽  
Pollution Prevention ◽  
Hydroelectric Power Plant ◽  
Fish Farming ◽  
Middle Part ◽  
Clean Water ◽  
Hydroelectric Power ◽  
Reservoir Water ◽  
Pollutant Sources

Pollution prevention must be carried out in the upstream, middle and downstream parts. One of the Citarum watersheds located in the middle part is the Cirata reservoir. Pollution in the Cirata reservoir does not only originate from the reservoir environment, but also from rivers that flow into the Cirata reservoir. Cirata Reservoir besides being a Hydroelectric Power Plant (PLTA) unit, this reservoir is also used by the community for fish farming in the Floating Net Pool (KJA) technique. This study aims to determine the most dominant pollutants contaminating the Cirata reservoir. Test of river and reservoir water quality is carried out with the help of lab tests by Labkesda. The research data was obtained by obtaining clean water quality test data from several 3 estuary points of the river flow to the Cirata reservoir and 4 centers of Cirata reservoir number of 40 samples. Data processing techniques are carried out using data mining, namely Exploratory Data Analysis. The lab parameter test results, which are compared with the Permenkes No. 32 Year 2017 standard, show that the majority of the physical and chemical quality parameters of the Citarum River which empties into the Cirata Reservoir are still within the required threshold. Most river and reservoir water samples have water quality that qualifies as clean water. Five samples (12.5%) in turbidity parameters and 1 sample (2.5%) in color samples did not qualify as clean water. This is possible because the sampling is too close to the mainland. Temperature parameters of 20 samples (50%) do not qualify as clean water is possible because of the lag time of sampling. The results of the analysis showed that the distance of pollutant sources, the amount of pollutant sources, and environmental conditions around the sampling significantly with temperature, TDS, turbidity, color, pH, nitrogen, iron, hardness, manganese, fluoride, and cyanide.

scholarly journals Water Quality and Trophic Status of Koto Panjang Reservoir, Indonesia

2021 ◽  
Vol 2 (2) ◽  
pp. 28-36
Author(s):  
Dina Muthmainnah ◽  
Aroef Hukmanan Rais
Keyword(s):  
Water Quality ◽  
Power Plants ◽  
Trophic Status ◽  
Aquatic Organisms ◽  
Hydroelectric Power ◽  
Tolerance Range ◽  
Reservoir Water ◽  
Hydroelectric Power Plants ◽  
Net Cages

Koto Panjang Reservoir is one of the hydroelectric power plants in Indonesia, located in Kampar Regency, Riau Province. This paper aims to determine the water quality and tropic status of the Koto Panjang Reservoir. The research was carried out along the Koto Panjang Reservoir, covering the floating net cages area, inlet, outlet, and the center of the reservoir. Water samples were collected twice a year, February and September 2017. The results showed that the water quality of Koto Panjang reservoir is still within the tolerance range for the aquatic organisms' life, including fish. Based on the TSI analysis, the Koto Panjang Reservoir throphic status was categorized as eutrophic to heavy eutrophic. This study recommends that relocating floating net cages is necessary so that the nutrient load will not only be concentrated in one location. The efficiency of using the feed for floating net cages could minimize the waste.

scholarly journals Features of natural plant complexes restoration and land reclamation in the area of Ust-Srednekanskaya hydroelectric power plant on the Kolyma river

2021 ◽  
Vol 265 ◽  
pp. 04016
Author(s):  
Pavel E. Tikhmenev ◽  
Andrey A. Smirnov ◽  
Evgeniy A. Tikhmenev ◽  
Galina V. Stanchenko
Keyword(s):  
Land Reclamation ◽  
Hydroelectric Power Plant ◽  
Anthropogenic Factors ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Natural Plant ◽  
North East ◽  
The North ◽  
The Impact ◽  
Kolyma River

The low resistance of the landscapes of the North-East of Russia to anthropogenic influences is shown. The features of natural plant complexes restoration and land reclamation in the area of the Ust-Srednekanskaya hydroelectric power station are considered. In order to create conditions for the successful restoration of vegetation cover after the impact of anthropogenic factors, it is recommended to carry out measures for leveling the disturbed surface and terracing it. It is proposed to carry out artificial sowing of cereals, which are characterized by regular and abundant fruiting.

Change in Abundance and Activity of Microbocenoses in the Area of Influence of a Large Landslide at the Bureya Reservoir

2021 ◽  
Vol 14 (3) ◽  
pp. 274-283
Author(s):  
L. M. Kondratyeva ◽  
Z. N. Litvinenko ◽  
D. V. Andreeva ◽  
A. S. Bashkurova
Keyword(s):  
Heterotrophic Bacteria ◽  
Hydrological Regime ◽  
Methylotrophic Bacteria ◽  
Toxic Substances ◽  
Humic Compounds ◽  
Large Landslide ◽  
Landslide Body ◽  
Artificial Channel ◽  
Area Of Influence

Abstract The results of field and experimental microbiological studies of water, soil, and rock samples in the influence zone of large landslide are presented. The landslide occurred in December 2018 and blocked the Bureya Reservoir from coast to coast. An artificial channel was created to restore the hydrological regime with the use of TNT (trinitrotoluene) and RDX (hexogen). A comparative analysis of the abundance of cultivated heterotrophic bacteria around the landslide body and in the artificial channel is carried out. The activity of microbial communities in relation to easily available (peptone, lactate, and starch) and difficult-to-mineralize humic compounds is also determined. With the use of spectrometry and gas chromatography, it is shown that an increase in the diversity of aromatic compounds in water is accompanied by an increase in the abundance of heterotrophic bacteria. A number of toxic substances, including methanol and methylated benzene derivatives, are found among the dominant components in the water. Its concentrations increased after the water drained through the landslide body and after imploding works. Many of the volatile organic compounds may have been products of microbial metabolism when water interacts with rocks. A hypothesis on the role of methanotrophic and methylotrophic bacteria in the genesis of methanol and toluene is discussed.

scholarly journals Evaluation of the Kama Riverbed Deformations and Development of Recommendations on Regulating the Non-metallic Building Materials Extraction in the Lower Reaches of Kamskaya Hydro Power Plant

2018 ◽  
Author(s):  
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Building Materials ◽  
Large City ◽  
Hydrological Regime ◽  
Hydroelectric Power Plant ◽  
Significant Loss ◽  
Hydroelectric Power ◽  
Lower Tail ◽  
Hydro Power

This article considers issues of regulating the non-metallic building materials extraction in the lower reaches of large hydroelectric power plants. The problem is quite urgent when a large city is located in the lower tail of a hydroelectric power plant and the process of extraction of non-metallic building materials is superimposed on the rather complicated issues of interaction with other water users. The article employs the technique of mutual overlap of bathymetric surveys for the previous periods combined with the analysis of the declared volumes of extraction of non-metallic building materials. A simulating hydrodynamic model of the Votkinsk reservoir has been made, with taking into account the data on the fractional composition of bottom sediments. During the development of the model, we used the software products HEC-RAS v.4.1 and SMS v.11.1. The use of onedimensional and two-dimensional models made it possible to simplify calculations without significant loss of accuracy of calculations. Based on these models, a deformation of the bed was calculated under the standard conditions of the hydrological regime of the Kama and Votkinsk reservoirs. The outcome of the work is recommendations on the allocation of sites in the lower tail of the Kamskaya HPP, where the extraction of non-metallic building materials is not recommended, the areas where production is possible subject to a number of conditions and restrictions concerning the volume of production and areas where production is possible without restrictions.

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