scholarly journals Special Features of Technogenic Bottom Sediments Impact on the Water Bodies Mercury Pollution Character

2020 ◽  
pp. 94-106
Author(s):  
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Water Body ◽  
Decisive Role ◽  
Mercury Content ◽  
Long Time ◽  
The Impact ◽  
System Water ◽  
Water Bottom

The article studies the impact of mercury-containing bottom sediments on the pollution of the surface water body – the Elkhovka River, which for a long time was affected by the enterprises of the Kirovo-Chepetsk industrial hub, to assess the possibility of ensuring the standard water quality in the Elkhovka River.Based on the data obtained as a result of determination of the mercury content in water samples, bottom sediments and measurements of the second-long water flow in the Elokhovka River along the watercourse length calculation of the mercury migration processes in the “water-bottom sediments” system has been carried out. 105 Water Sector of ruSSiascientific/practical journal No 5, 2020 г.It has been established that the decisive role in the formation of pollution belongs to migration processes in the system «water – bottom sediments», and the bottom sediments themselves have a dominant effect on the pollution of the Elkhovka River with mercury in c onc ent r at ion s e xc e e d i n g M P C i n fi s her y w at er. M i g r at ion of merc u r y f rom b ot t om s e d i ment s in the Elkhovka river riverbed in the coming years will not allow to ensure the standard water quality (MPC in fishery water) in the water body. A possible solution to this problem may be the laying of a new river channel with subsequent reclamation of the old channel.

ANALYSIS OF ACCUMULATION AND DISTRIBUTION OF LEAD IN THE SYSTEM WATER-BOTTOM SEDIMENTS IN THE BACH DANG ESTUARY (VIETNAM)

2017 ◽  
pp. 62-66
Author(s):  
Truong Van Tuan ◽  
Irina Vladimirovna Volkova
Keyword(s):  
Bottom Sediment ◽  
Bottom Sediments ◽  
Water Samples ◽  
Suspended Solids ◽  
Natural Habitat ◽  
Bottom Layer ◽  
Sediment Samples ◽  
Natural Breeding ◽  
System Water ◽  
Water Bottom

Research was held in the estuary of the river Bach Dang (Dongbay community, Rakhtay district, Hai Phong, Vietnam) in June, 2012 - May, 2013. Concentration of lead was studied in water, suspended solids and bottom sediment. Clam beach (natural breeding environment of Meretrix lyrata ) was inspected regularly, every month. Water samples were taken 6 times from the bottom layer 10 cm down the bottom, once per 3 hours in each of 12 investigated zones. Bottom sediment samples were taken at the depth 2 cm. The findings show that lead accumulates mainly in suspended solids (23.3 mg/kg) and in bottom sediment (14.31 mg/kg), in water it is in small quantities (0.003 mg/kg). Analysis of bottom sediment samples taken in different places showed that they have even leadcontent, lead is distributed uniformly, localization of contaminations is not found. The results obtained can be assumed as the basis for investigating lead accumulation and its excretion by clam Meretrix lyrata organisms in the natural habitat.

scholarly journals Impacts of temperature alteration on the drinking water quality stored in plastic bottles

2021 ◽  
Vol 11 (10) ◽  
Author(s):  
Abdelkader T. Ahmed ◽  
Mohammed Emad ◽  
Mohammed A. Bkary
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Tap Water ◽  
Research Work ◽  
Bottled Water ◽  
Physiochemical Parameters ◽  
Heating Water ◽  
Long Time ◽  
The Impact ◽  
Concentration Levels

AbstractMany people prefer to drink bottled water instead off the tap water. The bottled water is stored in the plastic bottles sometimes for long time. These plastic bottles might leach out some harmful materials into the water especially when exposed to temperature alteration, which may affect human health. This research work focused on investigating the effect of changing temperature on the bottled water quality. The work studied the effect of heating water in plastic bottles by sun, oven, and microwave. The study included also the impact of cooling and freezing the bottled waters. Results showed that temperature alterations caused changes in some physicochemical properties of bottled waters such as decreasing the values of pH and TDS and increasing levels of fluoride and chloride. In addition, the concentration levels of some physiochemical parameters exceeded the permissible values for drinking water. With temperature alterations, all levels of heavy metals in bottled waters were minimal except some small concentrations of copper and zinc. Results confirmed also differences in behavior between the bottled water brands exposed to the same temperature alterations. Heating bottled waters above 50 °C is alarming problem on the water quality. This is because above this degree, many alternations were observed in the water content. The outcomes of this work are useful for improving the current legislation on bottled waters and their storage.

scholarly journals Assessment of the Impact of Sewage Storage Ponds on the Water Environment in Surrounding Area

Proceedings ◽  
2020 ◽  
Vol 51 (1) ◽  
pp. 20
Author(s):  
Kairat Ospanov ◽  
Timur Rakhimov ◽  
Menlibai Myrzakhmetov ◽  
Dariusz Andraka
Keyword(s):  
Water Quality ◽  
Water Environment ◽  
Quality Parameters ◽  
Treated Wastewater ◽  
Groundwater Aquifer ◽  
Sewage Ponds ◽  
Basic Quality ◽  
The Impact

The paper presents the results of research on the environmental impact of sewage ponds serving the city of Kostanay (Kazakhstan). The scope of the research included the determination of basic quality parameters of raw and treated wastewater, an analysis of the chemical composition of groundwater in the vicinity of sewage ponds, and the analysis of the water quality of the Tobol River. The obtained results indicate that sewage from storage ponds, infiltrating into the ground, caused groundwater pollution in the area of about 100 km2 around the reservoirs. Due to the fact that the groundwater aquifer in the vicinity of sewage ponds feeds the Tobol River, it also affects water quality in the river, which does not meet the requirements for most of the analyzed parameters.

Impact of Lagoon Effluent on an Inland Stream – A 10 Year Perspective

1989 ◽  
Vol 21 (2) ◽  
pp. 289-292 ◽  
Author(s):  
G. P. Skerry ◽  
J. G. Parker
Keyword(s):  
Water Quality ◽  
Water Body ◽  
Inland Waterways ◽  
Inland River ◽  
Biological Water ◽  
Physical Chemical ◽  
Treated Effluent ◽  
Receiving Stream ◽  
The Impact ◽  
Biological Water Quality

The discharge of lagoon treated effluent to inland waterways has long been of contention in relation to the impact of residual algal cells and nutrients in the receiving water body, especially a water body used extensively for recreation. This paper examines the pre lagoon and post lagoon discharge effects on water quality in a major inland river over a ten year monitoring period. The impact of a lagoon discharge flow of up to 20 ML/day during summer conditions is assessed in relation to effect on receiving stream physical, chemical and biological water quality indicators and implications for management are assessed and evaluated.

scholarly journals Evaluation of the level of human impact on the river sediments in Russia

2019 ◽  
Vol 135 ◽  
pp. 01051
Author(s):  
Valentina Kurochkina
Keyword(s):  
Water Quality ◽  
Water Body ◽  
River Sediments ◽  
Ecological Status ◽  
Ecological Condition ◽  
Water Bodies ◽  
Water Control ◽  
Anthropogenic Pressures ◽  
Channel Processes ◽  
The Impact

The growing race of urbanization and population growth lead to anthropogenic load on the water is increasing all the time. High population density and considerable industrial potential of the urbanized territory are becoming dominant sources of pollution of water bodies. This trend identifies progressive pollution of water bodies and the growing need for sanitary-ecological status of water control facilities. Natural chemical composition and properties of water in surface water bodies are formed depending on the hydrological, soil, climate and other features. Flowinduced suspensions in urban watercourses is one of the main ways of contamination distribution in urbanized areas. For monitoring and reducing the negative impacts on the water quality of watercourses requires estimation of anthropogenic pressures and studying its spatio-temporal variability. Analysis of anthropogenic stress on water objects allows you to set the relationship between the number of coming in the water body of pollutants and concentrations of chemicals in the water. The main aim is to determine the amounts of contaminants accumulated in the river riverbed during the period of the economic utilization of the watercourse and to assess the impact of urbanization on its ecological status. The article deals with the influence of anthropogenous load on river hydraulics and properties of channel sediments that determine the course of channel processes and overall ecological condition of water objects. The interrelation between water body condition, water quality and sediment pollution is presented. Method of estimation of anthropogenous load pollutants in river of urban area sis proposed. Comparative analysis of the load for the rivers of Russia with various water run-off is demonstrated.

scholarly journals The Process of Microbiological Remediation of the Polluted Słoneczko Reservoir in Poland: For Reduction of Water Pollution and Nutrients Management

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3002
Author(s):  
Jakub Mazurkiewicz ◽  
Agata Mazur ◽  
Robert Mazur ◽  
Krzysztof Chmielowski ◽  
Wojciech Czekała ◽  
...  
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Surface Water Quality ◽  
Organic Content ◽  
Water Transparency ◽  
Water Remediation ◽  
Polluted Water ◽  
High Concentration ◽  
Effective Microorganisms ◽  
The Impact

The article discusses the impact of nutrients from sewage on the state of the sewage receiver. Bioremediation was carried out through the use of effective microorganisms. The potential recovery of valuable mineral and organic substances in the form of fertilizers was also examined. The Słoneczko Reservoir is a bathing area and serves many people in the summertime as a place of water recreation. Water quality deteriorated intensively from 2006 as a result of illegal wastewater discharge and the impact of fecal pollution from bathers. The high concentration of nutrients in the water was the cause of the eutrophication process and blooms of cyanobacteria, which pose a threat to human health in the bathing area. The bathing area was also closed many times by sanitary services as a result of exceeding the number of Escherichia coli and Enterococcus faecalis in the water. At the bottom of the reservoir, there was a layer of sediments with a thickness of 30–70 cm. Thus, the processes of anaerobic decomposition generated odor, causing nuisance in the reservoir area. Water transparency varied from 30 to 50 cm, due to the accumulation of suspensions and biomass of planktonic algae. The reservoir was subjected to microbiological bioremediation in 2017 and 2018 to polluted water treatment and to reduce the organic content of bottom sediments. Already after the first application of biopreparations putrefactive odors and the eutrophication process disappeared at the end of the 2017 summer season. Bioremediation reduced the value of E. coli and E. feacalis to the acceptable level. After the second application in 2018, the organic fraction of the bottom sediments was reduced to a very low level and the water transparency reached the bottom (maximum depth was 2.2 m) throughout the entire bathing area. The effect of the water remediation was maintained until 2019, and the surface water quality remained at a very good level. An important aspect in this case is also the exploitation of bottom sediments, because they are rich in nutrients and organic matter, and therefore it may have some potential as a fertilizer. The recovery of nutrients can be used in plant or pot production. However, they contain compounds that degrade quickly, causing unpleasant odors and threatening the environment. Thus, they should be managed and handled in an environmentally friendly and sustainable way.

scholarly journals Bio-Évaluation De La Qualité Des Eaux De Surface D’oued Beht (Maroc) Indice Biologique Global Des Réseaux De Contrôle Et De Surveillance (IBG-RCS)

2017 ◽  
Vol 13 (3) ◽  
pp. 94
Author(s):  
Lamhasni Nihad ◽  
Chillasse Lahcen ◽  
Timallouka Mohamed
Keyword(s):  
Water Quality ◽  
Biological Assessment ◽  
Biological Index ◽  
Surveillance Networks ◽  
Urban Waste ◽  
River Quality ◽  
Anthropogenic Action ◽  
The Impact

The present study concerns the biological assessment of Beht’s river quality in Morocco during the period Mai-June of 2014 using the standard Global Biological Index of Control and Surveillance Networks (GBICSN).Thus twelve sampling stations were chosen for the determination of the impact of agricultural and urban waste of Beht’s area on the biological waters quality of this river. As results this biological approach showed downgrading notes of the biological index from the watershed’s uphill to its downstream reflecting this way the deterioration of water quality with increasing anthropogenic action and inputs.

scholarly journals Application of a new method for determining the mass of oil per unit area of bottom sediments of water bodies

2021 ◽  
Vol 265 ◽  
pp. 02014
Author(s):  
Vladislava Perminova ◽  
Danil Vorobiev ◽  
Yulia Frank ◽  
Vladislav Perminov
Keyword(s):  
Bottom Sediments ◽  
Water Body ◽  
Oil Pollution ◽  
Unit Area ◽  
Oil Products ◽  
Water Bodies ◽  
Urgent Problem ◽  
State Information ◽  
Oil And Oil Products

The authors of the article draw the readers’ attention to the urgent problem that is the assessment of the pollution of bottom sediments of water bodies with hydrocarbons in the form of oil and oil products. When conducting surveys of water bodies, the determination of the content of oil or oil products in bottom sediments is expressed in grams per kilogram of precipitation in an air-dry state. Information in this form cannot be associated with the mass of oil at the bottom of the water body, what is very important when designing treatment works and calculating damage to aquatic biological resources. The method for determining the mass of oil pollution per unit area of bottom sediments of water bodies has been proposed and tested, what makes it possible to associate pollution not only with the concentration of pollutants, but also with the area of the reservoir.

scholarly journals Utilisation of Maqalika Reservoir as a source of potable water for Maseru city in Lesotho

2005 ◽  
Author(s):  
◽  
Masupha Letsie
Keyword(s):  
Water Quality ◽  
National Standards ◽  
Quality Data ◽  
Ungauged Catchments ◽  
Water Quality Data ◽  
Mean Values ◽  
Run Off ◽  
Remaining Capacity ◽  
The Impact

Lesotho is a land locked country, entirely surrounded by the Republic of South Africa. Maseru is the capital of Lesotho and the country’s main centre for commerce and industry. The study area is located on the North-Eastern outskirts of the Maseru urban area. The catchment occupies an area of 44km2 with a length of about 13 km and channel slope of 0.4 km/km. The Maqalika Reservoir was built in 1983 to meet the water demands for Maseru city up to 1995, and its storage capacity was 3.7 Mm3. The storage is gradually decreasing as sediment, carried by the natural run-off accumulates in the reservoir. Moreover, water pumped into the reservoir from the Caledon River (which is heavily sedimented) adds its own contribution of silt. The reservoir is located in a very densely populated area, and is heavily polluted leading to high purification costs. The study was motivated by the fact that Welbedacht Dam was constructed in 1973 in the Caledon catchment but downstream of Maqalika. After 20 years, 85% of the volume of the dam was silted. The study was intended in finding whether the positioning of the Maqalika reservoir is acceptable and to find its remaining capacity as a water body supplying a fast growing city. Consideration was also given to the effect of land use practices on the water quality of the Maqalika reservoir, including the cost incurred during purification. The water quality data on physico- chemical was collected from the Water and Sewerage Authority and was analysed using excel spreadsheets. Results obtained were compared with WHO, SABS and National Standards of Lesotho. It was found that nitrates, phosphates and faecal coliforms levels were by far above minimum standards rendering water to be very contaminated and the source being leaking sewers, defeacation in dongas and leachate from Tsosane and Lower Thamae dumping site. Iron levels were also high with mean values beyond 0.3mg/l and the source being leachate from dumping sites, poor disposal of scraps and minerals from soil. Conductivity levels were high and the suspected source is waste solid disposal having a maximum of 442mS/m in March 2001. Hardness, temperature and alkalinity do not pose much danger to Maqalika water since recorded results were almost within limits. Turbidity levels were very high and the main source was found to be catchment sedimentation through run-off. For determination of the impact of sedimentation through pumping, hydrological data was obtained from the Department of Water Affair (DWA) and analysed using Excel spreadsheets to get sediment concentrations. A linear regression graph was plotted using discharge against sediment concentration that yielded y = 0.0007x – 0.0019. This was used in the Rooseboom mathematical equation for estimation of volume occupied by sediment from 1983 - 2002 and was found to be 6789 m3. For determination of the impact due to catchment run-off, a map method of estimating sedimentation from ungauged catchments developed by Rooseboom was used and a volume of 4.598 x 106 m3 was obtained showing that the main contributor of sedimentation in the reservoir is catchment run-off. The chemical costs employed during purification were also compared between WASA and Umgeni Water of Kwazulu- Natal and WASA was found to be expensive with 9 cents/kl while Umgeni spent only 5.24 cents/kl.

scholarly journals Phytoplankton Condition within the Kuybyshev Reservoir Non-metallic Construction Materials Deposit Zone and Assessment of Water Quality

2016 ◽  
pp. 31
Author(s):  
Keyword(s):  
Water Quality ◽  
Species Diversity ◽  
Water Body ◽  
Construction Materials ◽  
Water Area ◽  
Environmental Damage ◽  
Class Iii ◽  
Quality Class ◽  
Kuybyshev Reservoir ◽  
The Impact

Analysis results of the spring phytoplankton development quantitative indicators for the Kuybyshev Reservoir within the impact zone of three non-metallic construction materials operated deposits, namely Krasnozarinskoye, Sviyazhskie Ostrova, and Bakhchi-Saray, have been presented. The water body current trophic status, blooming intensity and water quality class have been determined by the investigation outcomes. The total species diversity level has been investigated in accordance with the commonly accepted methods at each part of the reservoir and the system ecological sustainability degree has been assessed. Sufficiently high indicators of phytoplankton quantitative development were noted over the investigation period. Cyanobacteria mostly contributed to phytoplancton abundance formation, while giant cell diatoms contributed to biomass formation. Regardless high values of the species diversity indicators, the algologic community structure in the non-metallioc construction materials deposits zone was assessed as unstable and being in the state of environmental disbalance. Values of saprobity mean indices of abundance and biomass enabled to chracterize the water body as a mesosaprobic one, moderately polluted with water quality class III at the every portion of its water area. As non-metallic construction materials mining impacted negatively the Kuybyshev Reservoir environmental condition it is necessary to continue the given zone phytoplankton monitoring in order to make a subsequent assessment of environmental damage and to develop a set of measures aimed at rehabilitation of the water body ecosystem and to install water treatment facilities of the appropriate capacity.

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