scholarly journals Environmental water contamination and its purification Water quality of Watarase reservoir

1998 ◽  
Vol 27 (8) ◽  
pp. 548-552
Author(s):  
Guangwei HUANG ◽  
Nobuyuki TAMAI ◽  
Hironori MATSUZAKI
Keyword(s):  
Water Quality ◽  
Water Contamination ◽  
Environmental Water

Formulating biossay data of chemicals and environmental water

2000 ◽  
Vol 42 (3-4) ◽  
pp. 115-123 ◽  
Author(s):  
R. Shoji ◽  
A. Sakoda ◽  
Y. Sakai ◽  
M. Suzuki
Keyword(s):  
Water Quality ◽  
Low Density Lipoprotein ◽  
Water Environment ◽  
Density Lipoprotein ◽  
Environmental Water ◽  
Toxicity Data ◽  
Human Beings ◽  
Environmental Waters ◽  
Bodies Of Water

The quality of environmental waters such as rivers is often deteriorated by various kinds of trace and unidentified chemicals despite the recent development of sewage systems and wastewater treatment technologies. In addition to contamination by particular toxicants, complex toxicity due to multi-component chemicals could be much more serious. The environmental situation in bodies of water in Japan led us to apply bioassays for monitoring the water quality of environmental waters in order to express the direct and potential toxicity to human beings and ecosystems rather than determinating concentrations of particular chemicals. However, problems arose from the fact that bioassays for pharmaceutical purposes generally required complicated, time-consuming, expert procedures. Also, a methodology for feedback of the resultant toxicity data to water environment management has not been established yet. To this end, we developed a novel bioassay based on the low-density lipoprotein (LDL) uptake activity of human hepatoblastoma cells. The assay enabled us to directly detect the toxicity of environmental waters within 4 hours of exposure. This is a significantly quick and easy procedure as compared to that of conventional bioassays. The toxicity data for 255 selected chemicals and environmental waters obtained by this method were organized by a mathematical equation in order to make those data much more effectively and practically useful to the management of environmental waters. Our methodology represents a promising example of applying bioassays to monitor environmental water quality and generating potential solutions to the toxicity problems encountered.

scholarly journals Resolving conflicting objectives in the management of the Plastiras Lake: can we quantify beauty?

2005 ◽  
Vol 9 (5) ◽  
pp. 507-515 ◽  
Author(s):  
A. Christofides ◽  
A. Efstratiadis ◽  
D. Koutsoyiannis ◽  
G.-F. Sargentis ◽  
K. Hadjibiros
Keyword(s):  
Water Quality ◽  
Power Production ◽  
Environmental Water ◽  
High Quality ◽  
Water Release ◽  
Natural Landscape ◽  
Conflicting Objectives ◽  
Surrounding Landscape ◽  
Water Uses

Abstract. The possible water management of the Plastiras Lake, an artificial reservoir in central Greece, is examined. The lake and surrounding landscape are aesthetically degraded when the water level drops, and the requirement of maintaining a high quality of the scenery constitutes one of the several conflicting water uses, the other ones being irrigation, water supply, and power production. This environmental water use, and, to a lesser extent, the requirement for adequate water quality, results in constraining the annual release. Thus, the allowed fluctuation of reservoir stage is not defined by the physical and technical characteristics of the reservoir, but by a multi-criteria decision, the three criteria being maximising water release, ensuring adequate water quality, and maintaining a high quality of the natural landscape. Each of these criteria is analyzed separately. The results are then put together in a multicriterion tableau, which helps understand the implications of the possible alternative decisions. Several conflict resolution methods are overviewed, namely willingness to pay, hedonic prices, and multi-criteria decision analysis. All these methods attempt to quantify non-quantifiable qualities, and it is concluded that they don't necessarily offer any advantage over merely making a choice based on understanding.

scholarly journals Assessment of Ground Water Contamination by Inorganic Impurities in Ferozepur District of Punjab State, India

2019 ◽  
Vol 31 (3) ◽  
pp. 515-521
Author(s):  
Gurjeet Kaur ◽  
Sangeeta Sharma ◽  
Umesh Kumar Garg
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Ground Water ◽  
Water Contamination ◽  
Total Alkalinity ◽  
Total Hardness ◽  
Ground Water Contamination ◽  
Permissible Limits ◽  
Physico Chemical

Malwa region of Punjab state, India has become the center of water borne diseases due to excessive use of pesticides, chemical fertilizers, heavy metals, industrial toxins that cause toxicity in water. The main contamination in ground water is by physico-chemical parameters and heavy metals i.e. pH, total dissolved solids, total alkalinity, total hardness, calcium, chlorides, fluorides, arsenic and lead. The contamination of ground water with heavy metals causes health hazards to humans and animals. Due to lack of adequate facilities and resources for the management and handling of waste, the ground water contamination has been increased. In the present study, assessment of ground water quality was carried out in the villages of Ferozepur district of Punjab state, India. With main emphasis on analyzing the groundwater parameters of Ferozepur district which are responsible for health hazard to humans and animals. Various groundwater samples were collected randomly from the villages of Ferozepur district and analyzed for pH, total dissolved solids, total alkalinity, total hardness, calcium, chlorides, fluorides, heavy metals (arsenic and lead) using standard procedures. The concentrations of calcium, chlorides, fluorides and pH were within the permissible limits, whereas, alkalinity and total hardness were observed beyond permissible limits in most of the water samples. Even among majority of the samples taken, the concentration of arsenic and lead was found within the permissible limits. Results showed that the ground water samples collected from depth ranging from 100 to 360 ft, recorded values within permissible limits for drinking purpose as prescribed by WHO. Further, ANOVA has been applied on analysis results to study the effect of pH on fluoride and chloride, depth on fluoride and chloride and depth on arsenic and lead. Also, to adjudge the overall quality of water in Ferozepur district, the water quality index (WQI) has been calculated on the basis of large number of physico-chemical characteristics of water. The water quality index of ground water in Ferozepur district has been calculated to be 107. The value is close to 100 so the quality of ground water in Ferozepur district can be categorized under 'Good Quality' water.

Development of a basin management program to improve water quality in rivers based on an environmental water quality predictive model

2019 ◽  
Vol 19 (7) ◽  
pp. 2009-2020
Author(s):  
G. Calvo-Brenes ◽  
J. Mora-Molina
Keyword(s):  
Water Quality ◽  
Negative Impact ◽  
Secondary Forest ◽  
Environmental Water ◽  
Management Program ◽  
Agricultural Activity ◽  
Conservation Area ◽  
Osa Peninsula ◽  
Crop Cultivation

Abstract This research has the aim of establishing the amount of land that the Conservation Area National System (SINAC) needs to buy and specifying its use inside the Golfo Dulce Forest Reserve in order to maintain the good quality of the rivers. The study was done inside Rincon sub-basin in the Osa Peninsula, a land dedicated to primary and secondary forest (Melina tree plantations), mangrove forest, urbanism, chaparral, pasture for grazing livestock and crop cultivation, mainly rice and African palm; uses that may change in time affecting the actual water quality (WQ) in rivers and the bay. Changes in land uses modify the WQ and it can be predicted using WQ models based on environmental variables through the evaluation of different scenarios. It was found through modeling that pasture or chaparral land use has no negative impact on WQ; all the contrary happens with increments in crop cultivation or human population. At the present, the coastal area, adjacent to the reserve, has low agricultural activity but that could increase over time, affecting the WQ. Therefore, SINAC should continue with its acquisition land activity to counteract the negative environmental effect of agricultural activity to preserve the actual good quality of the rivers.

scholarly journals Research of the possibility of using Ceriodaphnia affinis Lilljeborg (Crustacea) in a short-term test while setting eological quality standards in Ukraine

2019 ◽  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Quality Standards ◽  
Environmental Water ◽  
Chemical Substance ◽  
Water Quality Standards ◽  
Short Term ◽  
Test Organisms ◽  
Ceriodaphnia Affinis

Formulation of the problem. Regulation of hazardous chemicals admission to surface water is carried out by means of appropriate water quality standards. Researching the systems of surface water quality regulation in different countries, it has been determined that there is a tendency to use standards for the protection of the aquatic ecosystem and for meeting the needs of society and industries - environmental quality standards. Such standards are based on obtaining ecotoxicological information of a dangerous chemical substance on the representatives of the aquatic ecosystem. Among them, some of the most sensitive test organisms are crustaceans from the Daphniidae family. They are used to establish water quality standards for chemicals, to assess the quality of wastewater and surface water using a toxicological indicator. It is recommended to use a standardized international methodology to assess effects of chemicals on Daphnia magna Straus (OECD No. 202) to establish environmental water quality standards in EU countries. However, in Ukraine, in water protection practice, the most popular test organism is Ceriodaphnia affinis Lilljeborg (Daphnia sp.). The purpose of the article. In order to set ecological standards for water quality of chemicals in Ukraine, the authors proposed to test the OECD No. 202 methodology using Ceriodaphnia affinis test organisms and to establish metrological characteristics for it. Presentation of the main research material. The authors tested the OECD methodology No. 202 [21] on the crustacean culture Ceriodaphnia affinis from the culture collection of the Laboratory of Ecological and Toxicological Research, the V. N. Karazin KhNU. The coefficient of variation of EC50-24 and EC50-48 K2Cr2O7 was 16,8 % and 15,9 % respectively. Based on the data obtained, the metrological characteristics of the tested method were established: the response range of the test organisms Ceriodaphnia affinis is the following – 1,45<EC50-24 <2,91 (mg/dm3); reproducibility of the results of determining the toxicity of a chemical substance – 0,18 mg/dm3 (16,1%); the error in the results of determining the toxicity of a chemical substance – 0,34 mg/dm3 (31.6 %); standard of operational control – 0,49 mg/dm3. Scientific novelty and practical significance. The findings confirm the possibility of using Ceriodaphnia affinis in a short-term test in setting environmental water quality standards in Ukraine.

scholarly journals Assessment of Spatial Variation in River Water Quality of the Baiyangdian Basin (China) during Environmental Water Release Period of Upstream Reservoirs

Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 688
Author(s):  
Ling Zhou ◽  
Wenchao Sun ◽  
Quan Han ◽  
Haiyang Chen ◽  
He Chen ◽  
...  
Keyword(s):  
Water Quality ◽  
Spatial Variation ◽  
Total Nitrogen ◽  
Environmental Water ◽  
Urban Region ◽  
Lake Ecosystem ◽  
Water Release ◽  
Baiyangdian Lake ◽  
Pollutant Concentrations

Baiyangdian Lake, the largest freshwater body in Northern China, is facing water shortage and eutrophication problems that threaten the lake’s ecosystem. Environmental water releases from upstream reservoirs to the lake are important measures to provide the freshwater resources demanded by the lake ecosystem. However, knowledge is limited regarding the influences of such water allocations on the water quality of the upstream rivers that receive the reservoir water and transport it into Baiyangdian Lake. To improve our understanding of possible influences of environmental water releases from upstream reservoirs, the spatial variation of water quality in rivers upstream of the lake during environmental water release periods from reservoirs was explored in this study. Water samples were collected along the two routes of water allocation: the WangKuai reservoir route (WKR) and the XiDaYang reservoir route (XDYR) and water quality parameters related to organic pollutants, nitrogen and phosphorus were analyzed. In the WKR, the pollutant concentrations generally increased from upstream to downstream. Chemical oxygen demand, total nitrogen, and total phosphorous at the sampling site closest to Baiyangdian Lake could not meet the water quality target of the water function zone. For the XDYR, pollutant concentrations peaked downstream of the major urban region of Baoding city and then decreased or remained at a similar level further downstream and only the total nitrogen concentration was worse than the target. The dissimilarities in spatial variation patterns of water quality may be caused by the different spatial distribution of wastewater treatment plants in the two routes.

Short Communication – Canadian Water Quality Guidelines as Indicators of Sustainable Agriculture

1995 ◽  
Vol 30 (3) ◽  
pp. 555-362 ◽  
Author(s):  
Pierre-Yves Caux
Keyword(s):  
Water Quality ◽  
Environmental Sustainability ◽  
Water Contamination ◽  
Short Communication ◽  
Ground Water Contamination ◽  
Management Framework ◽  
Water Quality Guidelines ◽  
Quality Guidelines ◽  
Direct Measures

Abstract Environmental Quality Guidelines for environmental sustainability are often lacking in many management or environmental policies. These are clear measures or indicators of the quality of the system. In Canada, national soil, water, tissue and sediment guidelines are developed to protect and sustain specific uses of land and water and provide direct measures of sustainability which can be incorporated into an overall ecosystem management framework. This short communication focusses on the use of pesticide Water Quality Guidelines for agricultural sustainability, especially with regard to surface and ground water contamination. Furthermore, this address introduces the new Canadian protocols for deriving Water Quality Guidelines for Irrigation and for Livestock Watering.

Local Water Diversely Known: Walkerton Ontario, 2000 and after

10.1068/d431 ◽  
2005 ◽  
Vol 23 (2) ◽  
pp. 251-271 ◽  
Author(s):  
Joy Parr
Keyword(s):  
Water Quality ◽  
Water Contamination ◽  
Water Monitoring ◽  
Shared Responsibility ◽  
Municipal Water ◽  
Community Consent ◽  
Local Citizenship ◽  
Media Reports ◽  
Local Water

In this narrative of the water contamination in Walkerton, Ontario, in 2000–02 I consider the local priorities defining good water. These vernacular understandings emphasised taste, softness, and thrift in municipal water, and they highly valued local sovereignty in matters of water quality, and solidarity as a quality of local citizenship. By using contemporaneous evidence from media reports and the judicial enquiry into the incident, I trace how the qualities of good water were redefined, and with them community standards of safety, expertise, and risk. The emphasis on community consent to vernacular water monitoring practices and the implications of this shared responsibility differ from the journalistic and judicial accounts which emphasise individual culpability.

scholarly journals Resolving conflicting objectives in the management of the Plastiras Lake: can we quantify beauty?

2005 ◽  
Vol 2 (3) ◽  
pp. 801-819
Author(s):  
A. Christofides ◽  
A. Efstratiades ◽  
G.-F. Sargentis ◽  
D. Koutsoyiannis ◽  
K. Hadjibiros
Keyword(s):  
Water Quality ◽  
Power Production ◽  
Environmental Water ◽  
High Quality ◽  
Water Release ◽  
Natural Landscape ◽  
Conflicting Objectives ◽  
Surrounding Landscape ◽  
Water Uses

Abstract. The possible water management of the Plastiras Lake, an artificial reservoir in central Greece, is examined. The lake and surrounding landscape is aesthetically degraded when the water level drops, and the requirement of maintaining a high quality of the scenery constitutes one of the several conflicting water uses, the other ones being irrigation, water supply, and power production. This environmental water use, and, to a lesser extent, the requirement for adequate water quality, results in constraining the annual release. Thus, the allowed fluctuation of reservoir stage is not defined by the physical and technical characteristics of the reservoir, but by a multi-criteria decision, the three criteria being maximizing water release, ensuring adequate water quality, and maintaining a high quality of the natural landscape. Each of these criteria is analyzed separately. The results are then put together in a multicriterion tableau, which helps understand the implications of the possible alternative decisions. Several conflict resolution methods are overviewed, namely willingness to pay, hedonic prices, and multi-criteria decision analysis. All these methods attempt to quantify non-quantifiable qualities, and it is concluded that they don't necessarily offer any advantage over merely making a choice based on understanding.

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