scholarly journals Resource-Efficient Methods to Facilitate the Preservation of a Reservoir's Self-Cleaning Potential

2022 ◽  
Author(s):  
Vitaliy V. Chelnokov ◽  
Aleksey V. Matasov ◽  
Elena Zabolotnaya ◽  
Anna S. Makarova ◽  
Andrey N. Glushko
Keyword(s):  
Water Quality ◽  
Water Body ◽  
Water Bodies ◽  
Environmental Condition ◽  
Environmental Preservation ◽  
Quality Of Water ◽  
Self Cleaning

The aim of this research was to develop environmental methods for the restoration and rehabilitation of Moscow’s water bodies. A number of methods are recommended. These can help to improve the environmental condition and water quality of water bodiesin Moscow. Keywords: ehabilitation of water body, engineering biology, environmental preservation

Management and Status of Japanese Public Waters

1991 ◽  
Vol 23 (1-3) ◽  
pp. 1-10 ◽  
Author(s):  
Takeshi Goda
Keyword(s):  
Water Quality ◽  
Coastal Waters ◽  
Industrial Wastewater ◽  
Quality Standards ◽  
Water Bodies ◽  
Industrial Wastewaters ◽  
Quality Of Water ◽  
Japanese Rivers ◽  
Per Capita

The management and status of public water bodies in Japan is discussed. The environmental quality standards which have been set and the levels of compliance with these standards are shown. The water quality of Japanese rivers, lakes, reservoirs, wetlands and coastal waters is described, and eutrophication problems are mentioned. The effects of changes in population density and levels of recycling of industrial wastewaters on the quality of water bodies are discussed. Almost 75% of industrial wastewater is now recycled. Per capita availability of freshwater in Japan is comparatively low, and the construction of 530 dams, in addition to the 2393 dams already in operation, is planned. Irrigation effluents from paddy fields are a major factor which influences river water quality in Japan. The improvement of water quality using various methods is discussed.

scholarly journals Water quality of the reservoirs used for irrigation in São José dos Pinhais, Paraná State, Brazil

2016 ◽  
Vol 46 (4) ◽  
pp. 626-631
Author(s):  
Tiago Miguel Jarek ◽  
Jorge Luiz Moretti de Souza ◽  
Nerilde Favaretto ◽  
Lucimeris Ruaro
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Coliform Bacteria ◽  
Environmental Preservation ◽  
Quality Of Water ◽  
Average Rainfall ◽  
Agricultural Potential ◽  
Thermotolerant Coliforms ◽  
Type Of Land Use

ABSTRACT: Land use outside its agricultural potential and low vegetation cover in the watershed impair the quality of water used for irrigation and may contribute to the spread of pathogenic coliform bacteria. The objective of this study was to relate the quality of irrigation water with the intensity and type of land use and the rainfall in a vegetable-producing region of São José dos Pinhais, Paraná. Water samples were collected monthly in 2013 from two reservoirs and one preserved source. After collection, the samples were chilled in Styrofoam boxes and transported to the laboratory for analyses of the total and thermotolerant coliforms. Effect of land use was analyzed by probability estimation trees. High land use and weekly above average rainfall increased the probability of thermo tolerant coliforms exceeding the limit allowed under legislation. In regards to thermo tolerant coliforms in the analyzed period, the water from only one reservoir was in accordance with the legislation for the quality of water to irrigate vegetables that are consumed raw. Results of this study are an alert to the local government for the necessity of environmental preservation to maintain the water quality of the county.

scholarly journals Standards Role in Support of State Regulation of Water/economic Activities

2015 ◽  
pp. 7
Author(s):  
Keyword(s):  
Water Quality ◽  
Water Body ◽  
Negative Impact ◽  
Environmental Safety ◽  
State Regulation ◽  
Water Bodies ◽  
Economic Activities ◽  
Best Available Techniques ◽  
Detection And Identification

Upgrading of the national standardization system creates favorable conditions for support and normal promotion of integrated environmental standards as a toolbox for control of the process of minimization of adverse impacts with their concurrent accounting and possible redistribution among the environment elements, i.e. air, water bodies, and soils. In the Russian practice of environmental protection there is no any objective toolbox for comprehensive assessment of the current activities’ negative impact. In outlook adoption of the negative impact minimization mechanism is most probable through the many-year benchmarking with European expertise based on the revealing of cause-eff ect relations in terms of «relative improvement of technique against the attained quality of environment (objectives)». Water bodies are subjected both to direct and indirect negative impact. There is no one method for assessment of water bodies’ environmental safety as a basis for adoption of adequate solutions in water sector. The developed standards on the basis of water/economic activities without considerable emissions to air and to soils propose a toolbox to secure uniform quantitative assessment both the techniques negative impact through assessment of their waste water quality and assessment of water quality of the receiving water body. The developed toolbox provides detection of the «negative impact – water body water quality» causeeffect relations. Integrated criteria proposed in the standards provide ranking and classifying of negative impact objects, detection and identification of the national water/economic best available techniques, implementation of the combined approach in the process of adoption of integrated environmental permissions.

scholarly journals Small Water Body Detection and Water Quality Variations with Changing Human Activity Intensity in Wuhan

2022 ◽  
Vol 14 (1) ◽  
pp. 200
Author(s):  
Lingjun Wang ◽  
Wanjuan Bie ◽  
Haocheng Li ◽  
Tanghong Liao ◽  
Xingxing Ding ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Water Body ◽  
Human Activities ◽  
Water Bodies ◽  
Small Water ◽  
Small Water Body ◽  
Water Indices ◽  
Small Water Bodies

Small water bodies ranging in size from 1 to 50,000 m2, are numerous, widely distributed, and have various functions in water storage, agriculture, and fisheries. Small water bodies used for agriculture and fisheries are economically significant in China, hence it is important to properly identify and analyze them. In remote sensing technology, water body identification based on band analysis, image classification, and water indices are often designed for large, homogenous water bodies. Traditional water indices are often less accurate for small water bodies, which often contain submerged or floating plants or easily confused with hill shade. Water quality inversion commonly depends on establishing the relationship between the concentration of water constituents and the observed spectral reflectance. However, individual variation in water quality in small water bodies is enormous and often far beyond the range of existing water quality inversion models. In this study, we propose a method for small water body identification and water quality estimation and test its applicability in Wuhan. The kappa coefficient of small water body identification is over 0.95, and the coefficient of determination of the water quality inversion model is over 0.9. Our results show that the method proposed in this study can be employed to accurately monitor the dynamics of small water bodies. Due to the outbreak of the COVID-19 pandemic, the intensity of human activities decreased. As a response, significant changes in the water quality of small water bodies were observed. The results also suggest that the water quality of small water bodies under different production modes (intensive/casual) respond differently in spatial and temporal dimensions to the decrease in human activities. These results illustrate that effective remote sensing monitoring of small water bodies can provide valuable information on water quality.

scholarly journals Assessing the impact of land use and land cover dynamics on water quality of Dal Lake, NW Himalaya, India

2020 ◽  
Vol 10 (10) ◽  
Author(s):  
Ishtiyaq Ahmad Rather ◽  
Abdul Qayoom Dar
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Land Cover ◽  
Water Body ◽  
Anthropogenic Activities ◽  
Well Being ◽  
Water Bodies ◽  
Conservation Strategy ◽  
Dal Lake

Abstract A dynamic process like land use, if anthropogenically unsustainable, adversely affects the well-being of the land system. Worldwide, water bodies are facing imminent threat due to unsustainable anthropogenic activities. Water quality and ecology are the two characteristics of water bodies, if not preserved, shall have a direct consequence on the well-being of the human systems. Hence it is essential to understand the causes and consequences of the deteriorating water body systems. The condition is particularly grim in Himalayan water body ecosystems, where unplanned and unchecked urbanization has threatened their very existence. In the present study, the dynamics of land use/land cover (LULC) and its impact on the water quality of Dal Lake in Kashmir Himalaya, India has been assessed. We carried out a detailed study wherein changing LULC is analyzed against the deteriorating trophic status of the Dal Lake using time-series of satellite imagery of the lake’s catchment and its water quality data. Results indicated that the water quality of Dal Lake has remarkably deteriorated due to increased nutrient and sediment loads from the catchment, attributed to significant anthropogenic activities in the catchment. Due to unprecedented LULC changes in the catchment, the forest class shows a significantly negative change since the last four decades (1980–2018), corroborating with the ongoing deterioration of physicochemical characteristics of the lake. The analysis shows an increase in all the agents of eutrophication, such as NO3–N, TP, and COD, from 1990 to 2018. The decrease in forest, agriculture, and floating gardens was observed to show a significant negative correlation with the increase in the decadal average values of the COD, NO3–N, and TP for the same corresponding period. Similarly, a positive correlation was found between the increase in built-up, aquatic vegetation, bare surfaces, and these water quality parameters, establishing a strong relationship between the deteriorating condition of the lake and changing LULC. Our findings indicate that changing LULC of the lake’s catchment is one of the critical factors that has significantly contributed toward the deteriorating ecology and water quality of the Dal Lake. This study shall contribute toward the development of the robust conservation strategy in order to save this urban lake from its untimely death.

scholarly journals ASSESSMENT OF WATER BODIES QUALITY OF THE VOLGA-AKHTUBA FLOODPLAIN FROM ECOLOGICAL VIEWPOINT

2021 ◽  
Author(s):  
S. Ya. Semenenko ◽  
◽  
N. V. Morozova ◽  
S. S. Marchenko ◽  
N. A. Kolobanova ◽  
...  
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Natural Waters ◽  
Oxygen Demand ◽  
Petroleum Products ◽  
Point Of View ◽  
Water Bodies ◽  
Quality Of Water ◽  
Negative Impacts

Purpose: to assess the quality of water in water bodies of the Volga-Akhtuba floodplain from an ecological viewpoint, taking into account the modern regulatory framework in the field of environmental protection. Materials and Methods. To assess the quality of natural waters from an ecological viewpoint, a complex indicator calculated by basic analyte markers that characterize typical negative impacts was used. The following hydrochemical indicators were taken as analyte markers: pH, mineralization (dry residue), suspended solids of natural origin, total iron, total manganese, ammonium (N), nitrites (N), nitrates (N), phosphates (PO4), chemical oxygen demand (COD). Results. The ecological state of water bodies was determined by hydro-chemical indicators of surface waters and bottom sediments using the example of such representative objects as water bodies on the territory of the Volga-Akhtuba floodplain: lakes Peschanoe, Varyuzhka, Zhestkovo, erik Chayka, lakes Beshenoe, Chubatoe, Yamy, erik Shumrovatyy, lake Shirokogorloe. In accordance with the provisions of GOST R 58556-2019 “Assessment of water quality in water bodies from an ecological point of view”, the quality of water from an ecological viewpoint, the degree of quality disturbance and changes in the state of aquatic ecosystems under anthropogenic load have been determined. Conclusions. Petroleum products have been recorded in the water bodies of the Volga-Akhtuba floodplain (lake Varyuzhka, erik Shumrovatyy). The analysis of hydrochemical indicators of water quality and bottom sediments shows that currently the overall level of pollution of the considered water bodies does not reach critical levels of permissible values.

scholarly journals Penentuan Status Mutu Air Metode Storet DAS Kali Curah Macan

2020 ◽  
Vol 19 (3) ◽  
Author(s):  
Budi Hariono ◽  
Saiful Anwar ◽  
Michael Joko Wibowo ◽  
Merry Muspita Dyah Utami
Keyword(s):  
Water Quality ◽  
Water Absorption ◽  
River Water ◽  
Water Body ◽  
Absorption Function ◽  
Quality Of Water ◽  
The Status ◽  
Household Activities ◽  
Reduced Water

The monitoring station of Curah Macan Watershed is located in Arjasa Village, Arjasa District, Situbondo Regency with 7o71'66 " at the South Latitude and 114o12'17" at the East Longitude. The aim research is to know the quality of water routinely, so that the water quality condition of river water body can be detected from the beginning. This is due to changes in land functions that have reduced water absorption function, erosion, sedimentation and industrial and household activities. Therefore, research on the analysis of the status of water quality especially in the Curah Macan watershed is very important to be done periodically in order to maintain its sustainability. The research using STORET method shows the water quality of Curah Macan watershed in the period of January - December 2017 for the quality of class I, II, III and IV has a score respectively -50; -28; -12 and -4 so that the water quality qualification is bad, moderate, moderate and good. Keyword : Kali Macan Watershed, Storet Method, Water Quality, Period January - December 2017 

scholarly journals Evaluation of water quality parameters of Valvan dam water for drinking purpose

2020 ◽  
Vol 26 (1) ◽  
Author(s):  
S. B. Patil ◽  
B. V. Patil
Keyword(s):  
Water Quality ◽  
Water Body ◽  
Human Activities ◽  
Quality Parameters ◽  
Total Hardness ◽  
Chemical Parameters ◽  
Underdeveloped Countries ◽  
Quality Of Water ◽  
Drinking Purpose

Water quality is becoming a global problem in developed and underdeveloped countries. Human activities directly or indirectly affect quality of water and pollute the water; the demand for fresh water is increasing faster. Therefore, in the present investigation attempt has been made to asses chemical parameters of Valwan dam water. Obtained values were compared with two standards of WHO and BIS. Parameters such as pH, Alkalinity, TDS, Total Hardness, CO2, dissolved oxygen, phosphate were found with permissible limits of BIS and WHO which indicates this water body is suitable for drinking purpose.

scholarly journals Methodology for assessment of technogenic contamination in water bodies at urban areas

2019 ◽  
Vol 135 ◽  
pp. 01057
Author(s):  
Valentina Kurochkina
Keyword(s):  
Bottom Sediments ◽  
Water Body ◽  
Urban Areas ◽  
Water Bodies ◽  
Quality Of Water ◽  
Technogenic Contamination ◽  
Main Indicator ◽  
Water Ecosystems ◽  
Relationship Of

The paper considers the problem of the influence of man-made load on the quality of water and bottom sediments of water bodies. The relationship of the state of the water body, the quality of the water in it and the level of contamination of bottom sediments is established. It has been shown that the rates and volumes of formation of bottom sediments and the level of contamination of their layers are different throughout the existence of a water body, which allows the use of bottom sediments as the main indicator of the ecological state of a water body, reflecting the level of anthropogenic impact on water ecosystems over time.

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