Irrigative assessment of Sasyk water quality

2021 ◽  
Vol 6 (2) ◽  
pp. 69-77
Author(s):  
Serhii Yurasov ◽  
◽  
Viktoriia Kuzmina ◽  
Vitalii Karaulov ◽  
◽  
...  
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Formation Process ◽  
Magnesium Ions ◽  
Artificial Lake ◽  
Salty Water ◽  
Water Conditions ◽  
Freshwater Reservoir ◽  
Irrigation Waters

The article is dedicated to the problem of artificial Lake Sasyk which was transformed from a salty water estuary into a freshwater reservoir at the expense of the Danube waters. In the first decades, the irrigative water conditions were not achieved due to the arrival of salts from the bottom sediments. Currently, the water quality formation process in Lake Sasyk has stabilized, but the problem of land irrigation remains urgent. The article gives an irrigation assessment of the quality of the Sasyk reservoir according to various methods considering observations in the HPS-2 region from 2007 to 2017. A detailed typification of irrigation waters based on Alekin O. A. water typing is proposed. It was found that mineralization and the content of sodium and magnesium ions in the Sasyk waters promote salinization and alkalinization of soils. For the safe use of this water for irrigation, both chemical reclamation and dilution with water are necessary.

Gamete quality in fish: evaluation parameters and determining factors

Zygote ◽  
2013 ◽  
Vol 23 (2) ◽  
pp. 177-197 ◽  
Author(s):  
Iván I. Valdebenito ◽  
Patricia C. Gallegos ◽  
Brian R. Effer
Keyword(s):  
Water Quality ◽  
Survival Rates ◽  
Physical Factors ◽  
Male And Female ◽  
Feeding Management ◽  
Determining Factors ◽  
Water Conditions ◽  
Evaluation Parameters

SummaryThe quality of fish gametes, both male and female, are determined by several factors (age, management, feeding, chemical and physical factors, water quality, etc.) that have an impact on the survivability of embryos, larvae and/or fry in the short or long term. One of the most important factors is gamete ageing, especially for those species that are unable to spawn naturally in hatcheries. The chemical and physical factors in hatcheries and the nutrition that they provide can significantly alter harvest quality, especially from females; as a rule, males are more tolerant of stress conditions produced by inadequate feeding, management and/or poor water conditions. The stress produced on broodstock by inadequate conditions in hatcheries can produce adverse effects on gamete quality, survival rates, and the embryonic eggs after hatching.

Modeling the effects of point and non-point source pollution on a diversion channel from Yellow River to an artificial lake in China

2015 ◽  
Vol 71 (12) ◽  
pp. 1806-1814 ◽  
Author(s):  
X. P. Gao ◽  
G. N. Li ◽  
G. R. Li ◽  
C. Zhang
Keyword(s):  
Water Quality ◽  
Point Source ◽  
Yellow River ◽  
Point Sources ◽  
Pollution Sources ◽  
Main Stream ◽  
Artificial Lake ◽  
Diversion Channel ◽  
Wei River

The Dragon lake diversion channel (DLDC) is the only river that recharges Dragon Lake, an artificial lake in China. This paper examines the main factors influencing water quality by investigating point source and non-point source pollutants along the main route. Based on the complicated system of rivers and desilting basins, a three-dimensional water quality model using environmental fluid dynamics code (EFDC) was developed. The model of DLDC was calibrated and verified using observed data. The error ranges of river water level, total phosphorus, total nitrogen and chemical oxygen demand were within 5%, 10%, 16% and 20%, respectively, all of which meet the precision requirement. The model was employed to predict the concentrations of pollutants in the main stream under current pollution loads within a year and a flood lasting for 24 hours. The results revealed that the main pollution sources that influence the water quality of waterways were the point sources followed by the non-point pollution sources. Water quality improved when large water quantities were delivered and this trend can be described as dilution. The water quality of the Dongfeng main channel meets the requirement; however, the water quality of the Dongfeng River is somewhat poor, and the water quality of the Wei River is seriously contaminated. To address these problems, we suggest that the Dongfeng River and Wei River adopt a culvert under its riverbeds.

Studi tentang Program Operasi Danau Jatiluhur Jernih untuk Mendukung Revitalisasi Waduk Jatiluhur

2019 ◽  
Vol 1 (2) ◽  
pp. 87-98
Author(s):  
Riza Rizkiah
Keyword(s):  
Water Quality ◽  
Qualitative Method ◽  
Economic Condition ◽  
The Other ◽  
Economic Conditions ◽  
Reservoir Water ◽  
Income Levels ◽  
Water Conditions ◽  
The Impact

Jatiluhur Reservoir is one of the largest reservoirs in West Java which has many functions, one of which is for aquaculture with the KJA system. But along with the development of KJA activity in the Jatiluhur Reservoir it has become one of the factors causing the decline in water quality of the Jatiluhur Reservoir. Therefore the Purwakarta Regency government made a program called Operation Jatiluhur Jernih Lake through the Decree of the Regent of Purwakarta No.523.31.05 / Kep.286-DLH / 2017.  This program had a purpose to curb a number of cageculture in Jatiluhur Dam. The purpose of this study was to analyze the effectiveness of the program as an effort to save the condition of reservoir water and to analyze the impact of the program to the sosio-economic condition of the farmer. The methode that used in this study was quantitavie methode based on the effectivity value from the quisioner and the qualitative method by analyzing data from interview. the results of this study indicate that the Jatiluhur Lake Operations program is running quite effectively with the acquisition of a score of 60.37%, which means this program has a pretty good value in efforts to save the water conditions of the Jatiluhur reservoir. But on the other hand this program has a significant impact, especially on the socio-economic conditions of farmers such as decreasing income levels, rising potential for unemployment, increasing levels of difficulty in fulfilling the needs of life, and also reducing the supply of fish in the Jatiluhur Reservoir

Assessment of Water Quality and State of Bottom Sediments of the Northern Part of the Rybinsk Reservoir by Emissions of the CherMK PAO "Severstal"

2019 ◽  
Vol 23 (10) ◽  
pp. 39-43 ◽  
Author(s):  
K.Yu. Mikhaylichenko ◽  
A.I. Kurbatova ◽  
A.Yu. Dorontsova ◽  
A.A. Paukova
Keyword(s):  
Water Quality ◽  
Adverse Effect ◽  
Metallurgical Plant ◽  
Bottom Sediments ◽  
Rybinsk Reservoir ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
The Rybinsk Reservoir

The quality of the water and bottom sediments of the Rybinsk Reservoir, on the adjacent territory of which the Cherepovetskiy Metallurgical Plant PJSC “Severstal” is located, which has an adverse effect on the state of the water body is investigated. The pollution of water and bottom sediments by the metallurgical plant in the northern part of the Rybinsk reservoir was assessed in connection with the planned construction of a pulp and paper mill (PPM) at the site of the study.

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 Channel Dredging Effect on Morphometric Features, Indicators of Water and Bottom Sediments Quality of the Lake Manzherokskoye (Altai Republic)

2020 ◽  
Author(s):  
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Petroleum Products ◽  
Water Volume ◽  
Altai Republic ◽  
Morphometric Features ◽  
Environmental Rehabilitation ◽  
Suspended Substances ◽  
The Russian Federation

The paper presents the results of a comprehensive assessment of the current ecological state of the important recreational object, i.e. Lake Manzherokskoye (Maiminsky region of the Altai Republic, the Russian Federation). The investigation was conducted in August 2018, just 2 weeks after the dredging works implemented in the framework of the environmental rehabilitation project. The studied morphometric, hydro/physical and hydro/chemical parameters of the reservoir are evidence of an increase in lake depth (with its maximum more than 2 m, up to 5.66 m) and water volume (more than 2 times, up to 1,16 million m3) that in the future will lead to the improved oxygen regime and the decreased inflow of biogenic matter. Bottom sediments are still represented by soils with a high content of organic carbon (up to 56,2±2.9 mg/dm3) and organic matter (up to 112.3±10,2 mg/dm3); detritus and organic silt (sapropel) dominate in the sediments. In all studied sites and depths of Lake Manzherokskoye, the water was polluted by roiled organic silts. The concentration of suspended solids reached 4.6 g/dm3, whereas transparency (by Secchi disk) dropped up to 0,5 cm. Vertical distribution of suspended substances points to the process of their deposition. Water quality of the lake is estimated as unsatisfactory because of the performed dredging works. Major pollutants of the lake water are phosphates (up to 0,417±0,042 mg/dm3), petroleum products (up to 0,4±0,1 mg/dm3) and organic substances (up to 342,2±35,8 mg O/dm3 by unfiltered water COD); their concentrations exceed MAC significantly. Water quality does not meet the requirements imposed upon the water bodies used for recreational purposes.

scholarly journals The influence of the bottom sediments on water quality of small rivers

2019 ◽  
Vol 01 (01) ◽  
pp. 19-24
Author(s):  
Iskandarova Shakhnoza Tulkunovna ◽  
Usmanov Islam Abbasovich ◽  
KHasanova Mamura Ikramovna
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Small Rivers ◽  
Surface Layers ◽  
Secondary Sources ◽  
Sources Of Pollution ◽  
State Of Water ◽  
Deep Layers ◽  
Metallurgical Combine

The research is devoted to the study of the effect of bottom sediments on the water quality of the Akhangaran river. It has been established that below the wastewater discharge of the Almalyk Mining and Metallurgical Combine, bottom sediments are formed in the coastal areas of the Akhangaran River, in which significant concentrations of mineral and organic substances accumulated. The toxic metals, the concentrations of which exceed the normative levels, especially in the summer season were found in the water. A strong correlation (r > 0.5) has been established between the content of elements in bottom sediments and their concentration in the water of the Akhangaran river. The obtained data shows that bottom sediments are secondary sources of pollution of small rivers. Thus, the monitoring the water quality of small rivers in areas where non-ferrous metallurgy enterprises are located should be carried out taking into account the adverse effects of bottom sediments on the state of water bodies. The content of elements in bottom sediments varies widely on average from 0.01 (surface layers) to 32.1 mg/g (deep layers). It is characteristic that iron and copper in the bottom sediments are present in higher concentrations compared to other elements.

Investigation of chemical parameters along the Nagy Brook

2014 ◽  
Vol 5 (1) ◽  
pp. 41-45
Author(s):  
N. Mazsu ◽  
A. Szabolcsik ◽  
S. Forian ◽  
N. Boros ◽  
I. Bodnar
Keyword(s):  
Water Quality ◽  
Surface Waters ◽  
Point Sources ◽  
Common Interest ◽  
Treated Wastewater ◽  
Chemical Parameters ◽  
Water Stream ◽  
Sources Of Pollution ◽  
Water Conditions

Abstract Several small and big water streams cut across Hungary; the protection of these water resources is in our common interest. To perform this protection, it is necessary to carry out extensive condition surveys of these surface waters. Unfortunately, our surface water streams are not properly investigated; it is true especially for the small ones. That is why we started to study the water quality of Nagy Brook, which is loaded by many point sources of pollution. During our work we have done measurements on spot and in laboratory, as well. In this paper we are presenting only those results which were measured on the spots along the Nagy Brook. Our results demonstrate how large the effect of inflowing treated wastewater is on the quality of a seasonal water stream and how the water level affects the studied parameters and what kind of the chemical and ecological water conditions can be developed under these circumstances.

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