scholarly journals Dynamics of Water Quality of the Tsimlyansk Reservoir over the 1979-2014 Period.

2016 ◽  
pp. 74
Author(s):  
Keyword(s):  
Water Quality ◽  
Aquatic Organisms ◽  
Water Quality Assessment ◽  
Ammonia Nitrogen ◽  
Biogenic Elements ◽  
Chemical Information ◽  
Organic Substances ◽  
Reservoir Water ◽  
Tsimlyansk Reservoir ◽  
Vital Functions

Analysis of many-year hydro/chemical information of the Rosgidroment state observation network that enables to assess the changes in the pollutants typical for the Tsimlyansk reservoir over the 1979–2014 period has been carried on the basis of a single methodological/methodical framework. The easily oxidizable organic substances dynamics (by BOD5) and organic substances (by COD), as well as changing of many-year season concentrations of ammonia nitrogen, nitrite nitrogen and nitrate nitrogen and phosphates has been studied as they are the most active substances contributing to aquatic organisms vital functions in view of the cyanobacteriae-caused “blooming” typical for the Tsimlyansk reservoir. These biogenic elements’ concentration in water mostly depends on activity of the biological processes occurring within water bodies. It has been demonstrated that seasonal variations are characteristic for the organic matter, nitrogen and phosphorous mineral forms content in the Tsimlyansk reservoir water, and increase in their content can promote its euthrophication.Comparison of the observed data with the maximal permissible concentration values were used for the water quality assessment. An integrated assessment of the Tsimlyansk reservoir water quality dynamics has been accomplished at the most human affected ranges. Some trends of the Tsimlyansk reservoir monitoring system improvement in the conditions of the complicated hydrological situation caused by the 2010-2014 low-water period in the Don basin have been outlined: in particular, joint functioning of hydro/chemical and hydro/biological observation stations with hydrological stations. Bearing in mind that the in-reservoir processes of chemical substances transformation and redistribution are critical for the reservoir aquatic ecosystem functioning and sustainability it is very important to study exchange processes within the water-bottom sediments system.

scholarly journals Assessment of Water Quality and Ecosystem Health from the Ecological Paradigm Position

2017 ◽  
Author(s):  
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Ecosystem Health ◽  
Methodological Approach ◽  
Aquatic Organisms ◽  
Water Quality Assessment ◽  
Physiological Status ◽  
Chemical Information ◽  
Ecological Paradigm ◽  
The Impact

Methodological approach to the water quality and ecosystem health from the ecological paradigm position has been vindicated. Critical analysis of the currently existing methods of water quality assessment has been performed. It has been shown that biological criteria of the ecosystems’ status diagnostics (in-situ) based on studying of laws of aquatic organisms and communities organization levels variability adequately reflect water quality and ecosystem health. New methodical solutions on hydro/chemical information compression to the unified indicator of the impact doze and vindication of informative biological water quality assessment criteria are depicted. Results of practical testing of the developed methods on a number of water bodies of Russia are presented. The methods are based on revealing of the cause-effect relations that are developed on the basis of doze-effect dependencies between the water quality chemical composition integral indicator and fish physiological status indicators.

scholarly journals Water Quality Assessment of Tributaries of Batang Baleh in Sarawak Using Cluster Analysis

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Teck-Yee Ling ◽  
Chen-Lin Soo ◽  
Teresa-Lee-Eng Heng ◽  
Lee Nyanti ◽  
Siong-Fong Sim ◽  
...  
Keyword(s):  
Water Quality ◽  
Cluster Analysis ◽  
Total Phosphorus ◽  
Organic Nitrogen ◽  
Suspended Solids ◽  
Oxygen Demand ◽  
Aquatic Organisms ◽  
Water Quality Assessment ◽  
Upstream Region ◽  
Nitrite Nitrate

Assessment of river water quality is essential as it provides the knowledge required to make informed decisions. Therefore, water quality was determined at 15 tributary stations located along the Batang Baleh, Sarawak. Results of the study indicate that all tributaries were well-aerated (≈ 7.7 mg/L) with pH (≈ 7.3) and conductivity (≈ 37.3 μS/cm) values falling within acceptable ranges. However, there were tributaries that showed very high turbidity (> 1000 NTU) and suspended solids (> 800 mg/L) which were contributed by the soil erosion from logging activities in the watershed. Tributary stations associated with logging activities also showed significantly higher total phosphorus and organic nitrogen. Cluster analysis demonstrated that water quality at tributary stations along the Batang Baleh exhibited a longitudinal variation from upstream to downstream regions, particularly, dissolved oxygen, five-day biochemical oxygen demand, and nitrite-nitrate nitrogen, which were found higher in upstream region and steadily decreased towards the downstream region. Two stations located at Sg. Serani and Sg. Melatai were distinct from the other stations with the highest concentrations of turbidity, total suspended solids, organic nitrogen, and total phosphorus. Thus, there is an urgent need to reduce the pollutants in the tributaries of Batang Baleh for the health of the sensitive aquatic organisms.

scholarly journals Multi-Faceted Environmental Analysis to Improve the Quality of Anthropogenic Water Reservoirs (Paprocany Reservoir Case Study)

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2626 ◽  
Author(s):  
Damian Absalon ◽  
Magdalena Matysik ◽  
Andrzej Woźnica ◽  
Bartosz Łozowski ◽  
Wanda Jarosz ◽  
...  
Keyword(s):  
Water Quality ◽  
Global Warming ◽  
Urban Areas ◽  
Saline Water ◽  
Good Condition ◽  
Treatment Plant ◽  
Biogenic Elements ◽  
Reservoir Water ◽  
Dam Reservoirs ◽  
Kjeldahl Nitrogen

Maintaining good condition of dam reservoirs in urban areas seems increasingly important due to their valuable role in mitigating the effects of global warming. The aim of this study is to analyze possibilities to improve water quality and ecosystem condition of the Paprocany dam reservoir (highly urbanized area of southern Poland) using current data of the water parameters, historical sources, and DPSIR (Driver–Pressure–State–Impact–Response) and 3D modeling concerning human activity and the global warming effects. In its history Paprocany reservoir overcame numerous hydrotechnical changes influencing its present functioning. Also, its current state is significantly influenced by saline water from the coal mine (5 g L−1 of chlorides and sulphates) and biogenic elements in recreational area (about 70 mg L−1 of chlorate and to 1.9 mg L−1 Kjeldahl nitrogen) and in sediments (222.66 Mg of Kjeldahl nitrogen, 45.65 Mg of P, and 1.03 Mg of assimilable phosphorus). Concluding, the best solutions to improve the Paprocany reservoir water quality comprise: increasing alimentation with water and shortening the water exchange time, restoration of the 19th century water treatment plant, and wetlands and reed bed area revitalization. The study also proved the applicability of mathematical models in planning of the actions and anticipating their efficiency.

Water Environmental Quality Assessment and Protection Strategies of the Xinlicheng Reservoir, China

2014 ◽  
Vol 501-504 ◽  
pp. 1863-1867
Author(s):  
Xian Fu Zhang ◽  
Chang Lai Xiao ◽  
Yong Qing Li ◽  
Ding Feng Song
Keyword(s):  
Water Quality ◽  
Environmental Quality ◽  
Pollution Index ◽  
Longitudinal Axis ◽  
Ammonia Nitrogen ◽  
Reservoir Water ◽  
Index Method ◽  
Nutrient Emissions ◽  
Protection Strategies ◽  
Water Environmental Quality

Based on the monthly monitoring data in the Xinlicheng Reservoir from 2008 to 2011 in 3 zones (fluvial, transitional and lacustrine), 6 water quality variables were selected as evaluation indicators to evaluate the water environmental quality by improved Nemerow comprehensive pollution index method. The results indicated the reservoir water quality reached classII or III during the study period and met the requirements of centralized drinking water. No significant differences (P > 0.05) for Nemerow indexes were detected among seasons and zones. However, that Nemerow indexes slightly decreased along the longitudinal axis of reservoir showed the water quality in the lacustrine zone was better than that in the fluvial zone, which implied the reservoir ecological system had self-purification function. The improved Nemerow index method based on weight is objective, and the pollution factor with maximum weight is total phosphorus (TP) which is followed by ammonia nitrogen (NH3-N) and total nitrogen (TN). Water quality protection strategies should focus on controlling nutrient emissions and prevent eutrophication, including exogenous governance and endogenous control.

scholarly journals Seasonal Release Potential of Sediments in Reservoirs and its Impact on Water Quality Assessment

2019 ◽  
Vol 16 (18) ◽  
pp. 3303 ◽  
Author(s):  
Suduan Hu ◽  
Tianxiang Wang ◽  
Shiguo Xu ◽  
Lingxiao Ma ◽  
and Xinguo Sun
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Surface Water Quality ◽  
Water Quality Assessment ◽  
Ammonia Nitrogen ◽  
Simulation Experiments ◽  
Overlying Water ◽  
Equilibrium Concentrations ◽  
Release Potential ◽  
Quality Surface

Reservoir sediments act as important receivers and sources for nutrients in the overlaying water. To determine the sediments adsorption and release characteristics and their impacts on water quality, surface sediments samples collected from Biliuhe reservoir in August 2015 were studied through simulation experiments in a laboratory. The results demonstrated that the equilibrium concentrations (EC0) of ammonia nitrogen (NH4+–N) and total phosphorus (TP) were 8.29 mg/L and 0.025 mg/L, respectively, which were both higher than the average concentrations in the overlying water. Therefore, the sediments of Biliuhe reservoir mainly acted as the pollution sources for NH4+–N and TP, and the release to water showed a seasonal variation. When potential release amounts were considered, the average concentrations of NH4+–N and TP in the overlaying water could reach 6.4 mg/L and 0.21 mg/L, respectively, which significantly exceeded the current contents. Further, water quality exhibited a decreased tendency after taking the release potential of nutrients into account of water quality assessment. Among the samples, 42% and 33% of them in summer and autumn exceeded the third level of the National Surface Water Quality Standards of China (GB3838-2002). The results indicated that sediments release potential had an unignored influence on water quality during various seasons.

Shifosi Reservoir Water Environmental Assessment Based on Grey Clustering

2012 ◽  
Vol 610-613 ◽  
pp. 857-861
Author(s):  
Jun Pan ◽  
Te Leng ◽  
Yang Liu
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Water Environment ◽  
Water Quality Assessment ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Reservoir Water ◽  
Environmental Treatment ◽  
Grey Clustering ◽  
Assessment Result

Reservoir water quality assessment plays an important role in water environmental treatment. This takes Shifosi reservoir as example, using water quality monitoring data in 2010, selecting monitoring indexes. It applied grey clustering method to water quality assessment, concluded the assessment result and discussed the result. Through this water quality assessment,it provided basis for the reservoir water environment research.

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 Water quality in forests small retention reservoirs in southern Poland – case study

2018 ◽  
Vol 50 (1) ◽  
pp. 3-17
Author(s):  
Mirosław Wiatkowski ◽  
Czesława Rosik-Dulewska ◽  
Daria Nikel ◽  
Urszula Karwaczyńska
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Water Retention ◽  
Seasonal Fluctuation ◽  
Water Quality Assessment ◽  
Class Ii ◽  
Ammonia Nitrogen ◽  
Electrolytic Conductivity ◽  
Quality Class ◽  
Southern Poland

Abstract This paper provides an analysis of water quality in three newly constructed small water retention reservoirs (Rudziczka, Niemysłowice I and Paciorkowy) located in forested areas of the forest district Prudnik in the Opolskie Province (southern Poland). The main purpose of these reservoirs is not only water retention, but also flood safety, fire protection, recreation and ecology. This paper presents the results of research carried out in December 2014 and May 2015. The assessment of water quality was performed in accordance with the applicable provisions on water quality assessment. Moreover, an assessment of eutrophication of water and of the usability of water in reservoirs is given (an analysis of suitability of water as a fish habitat). The research shows that the investigated waters are of quality class I in terms of the values of electrolytic conductivity, nitrates, nitrites, dissolved oxygen CODMn, calcium, magnesium and general hardness. In terms of the temperature (the Rudziczka reservoir), and the content of ammonia and phosphates they were of quality class II. The reaction, BOD5 and sulphates and chlorides content exceeded the threshold values for class II. It was also found that the investigated waters are not eutrophic. Based on the indicators such as reaction, dissolved oxygen, ammonia nitrogen and temperature, the waters in all the reservoirs except for Rudziczka met the quality requirements for habitats of salmonids and cyprinids. The living conditions for fish are deteriorated most by the increased levels of BOD5 and of nitrites in the Rudziczka and Paciorkowy reservoirs. The analysis of seasonal fluctuation in concentrations of water quality indicators in the investigated water bodies showed that in winter the concentrations of indicators were higher for nitrates, phosphates, electrolytic conductivity, calcium and general hardness and lower for temperature, reaction, nitrites, ammonia and dissolved oxygen. While the water in the Paciorkowy reservoir had the worst quality, the surface water in the Rudziczka reservoir had the best quality. The research initiated in small forests water retention reservoirs provides preliminary information on water quality and the importance of investigated reservoirs for increased retention.

scholarly journals Water Level Decline in a Reservoir: Implications for Water Quality Variation and Pollution Source Identification

2020 ◽  
Vol 17 (7) ◽  
pp. 2400
Author(s):  
Zixiong Wang ◽  
Tianxiang Wang ◽  
Xiaoli Liu ◽  
Suduan Hu ◽  
Lingxiao Ma ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Level ◽  
Principal Component ◽  
Ammonia Nitrogen ◽  
Pollution Source ◽  
Biological Action ◽  
Pollution Sources ◽  
Reservoir Water ◽  
Reservoir Water Level ◽  
Water Level Decline

Continuous water-level decline makes the changes of water quality in reservoirs more complicated. This paper uses trend analyses, wavelet analysis and principal component analysis-multiple linear regression to explore the changes and pollution sources affecting water quality during a period of continuous reservoir water level decline (from 65.37 m to 54.15 m), taking the Biliuhe reservoir as an example. The results showed that the change of water level of Biliuhe reservoir has a significant 13-year periodicity. The unusual water quality changes during the low water level period were as follows: total nitrogen continued to decrease. And iron was lower than its historical level. pH, total phosphorus, and ammonia nitrogen were higher than historical levels and fluctuated seasonally. Permanganate index increased as water level decreased after initial fluctuations. Dissolved oxygen was characterized by high content in winter and relatively low content in summer. The pollutant sources of non-point source pollution (PC1), sediment and groundwater pollution (PC2), atmospheric and production & domestic sewage (PC3), other sources of pollution (PC4) were identified. The main source of DO, pH, TP, TN, NH4-N, Fe and CODMn were respectively PC3 (42.13%), PC1 (47.67%), PC3 (47.62%), PC1 (29.75%), PC2 (47.01%), PC1 (56.97%) and PC2 (50%). It is concluded that the continuous decline of water level has a significant impact on the changes and pollution sources affecting water quality. Detailed experiments focusing on sediment pollution release flux, and biological action will be explored next.

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