surface water body Articles
-
Membrane Technology in Water Treatment in the Mediterranean Region
Water is the most essential resource of life. About 97,5 % of the World’s water resources (1.386 Mio km³) are salty seawater, not usable for agriculture, technical purposes or simply quenching the thirst of about 6 Billion people on Earth. Just 2.5 % of the world’s water is fresh water, but only 30 % of it are accessible for us, either as groundwater or as surface water bodies. ...
-
Screening of pharmaceuticals in surface water bodies of the Pampas region of Argentina
Pharmaceuticals have been included among emerging pollutants due to their continuous input in aquatic environments by wastewater discharges. The aim of the present study was detecting and analysing concentration levels of five commonly used pharmaceuticals in surface water bodies of the Pampas region of Argentina. Analyses were done on the soluble fraction by liquid chromatography with mass ...
-
Sustainability of societal water management practices
For sustainable water management in water scarce areas available quantity of water is consumptively used and saved water is conjunctively supplied in addition to insufficient quantity available in water deficit months. Such storages are generated season wise and selecting suitable technique of aquifer storage as against preservation in a surface water body is a vital issue. Conjunctive planning ...
-
Development of water scenarios for large lakes in Europe: the case of Lake Peipsi
Qualitative or quantitative description of the future by developing scenarios is a key method when taking a long-term view, e.g., up to 2050. Previously the time frames covered by the scenarios have usually been no more than 20 years. This period can be too short for achieving long-term goals when, for example, testing watershed management plans. This paper is an attempt to introduce and ...
-
Map Algal Blooms with Satellite Remote Sensing Technology
The quality of water bodies is a key determinant in the usability of the resource for the purpose required. It is therefore of great importance to managers of hydrologic resources to be able to confidently tell the status of their water resource. One of the major problems in the quality of surface water bodies is the blooming of algae and blue green algae. Algal blooms can result in ecological, ...
By LG Sonic
-
Map algal blooms with satellite remote sensing technology
The quality of water bodies is a key determinant in the usability of the resource for the purpose required. It is therefore of great importance to managers of hydrologic resources to be able to confidently tell the status of their water resource. One of the major problems in the quality of surface water bodies is the blooming of algae and blue green algae. Algal blooms can result in ecological, ...
By LG Sonic
-
America’s Rivers are Changing Color
Researchers are tracking the color shifts to estimate quality of surface water bodies In the age of satellite photography, scientists can simply look at rivers to draw some accurate conclusions about their water quality. A study published recently in the journal Geographical Research Letters explains how it works. According to researchers, a third of rivers in the United States have changed ...
-
Study: Climate Change to Bring More Toxic Algal Blooms
Researchers find fish-killing algae thrive in light conditions associated with climate change A new University of Delaware study shows that changing light conditions associated with climate change will significantly increase the growth and impact of harmful algal blooms, creating powerful and persistent disruptions in the food web. The causes of harmful algal blooms may vary, but typically farm ...
-
International phosphorus workshop: diffuse phosphorus loss to surface water bodies—risk assessment, mitigation options, and ecological effects in river basins
Received for publication February 9, 2009. Agriculture is a major source of P to the aquatic environment in many countries. Although efforts have been made to improve the P utilization in agricultural production, which is reflected in modestly declining P surpluses in many countries, increasing agricultural P surpluses are still observed in some countries. The IPW5 Special Submission included in ...
-
Water Stress in Northern China
According to the World Bank report1, China is facing a more severe water crisis problem than ever: one in four Chinese people, nearly 300 million, has no access to safe drinking water today. China produces over 60 billion tons municipal and industrial wastewater per year, but less than 30 percent of the domestic wastewater is treated. As most of the 17,000 rural towns have no municipal wastewater ...
-
Semi-analytical 3D solution for assessing radial collector well pumping impacts on groundwater–surface water interaction
We present a new semi-analytical flow and transport model for the simulation of 3D steady-state flow and particle movement between groundwater, a surface water body and a radial collector well in geometrically complex unconfined aquifers. This precise and grid-free Series Solution-analytic element method approach handles the irregular configurations of radial wells more efficiently than ...
-
Dye tracers as a tool for outfall studies: dilution measurement approach
Dye tracer technique is well established and of wide application for assessment of outfalls and for delineation of near field and far field extensions. Common goals of a tracer study include the measurement of the dilution factor, estimation of the dispersion coefficients, measurement of the effluent discharge and calibration of a contaminant transport model. This paper presents a brief review ...
-
Analysis of groundwater–surface water interaction in horizontal unconfined aquifer bounded by a stream and groundwater divide using a non–linear numerical model
In this study, a non–linear numerical model was developed to analyse the interaction between the drainage water moving from an unconfined aquifer and a surface water body. This interaction can occur during or after a rainfall event, which can cause the groundwater table to change. At first, a laboratory–scale aquifer model with stream and groundwater divide boundaries was established to examine ...
-
Biosurfactants as demulsifying agents for oil recovery from oily sludge – performance evaluation
The oil producing and petroleum refining industries dispose of a significant amount of oily sludge annually. The sludge typically contains a mixture of oil, water and solid particles in the form of complex slurry. The oil in the waste sludge is inextractible due to the complex composition and complex interactions in the sludge matrix. The sludge is disposed of on land or into surface water ...
-
In-stream bioreactor for agricultural nitrate treatment
Nitrate from agricultural activity contributes to nutrient loading in surface water bodies such as the Mississippi River. This study demonstrates a novel in-stream bioreactor that uses carbonaceous solids (woodchips) to promote denitrification of agricultural drainage. The reactor (40 m3) was trenched into the bottom of an existing agricultural drainage ditch in southern Ontario (Avon site), and ...
-
Multimetal accumulation in crustaceans in surface water related to body size and water chemistry
Many relationships of bioaccumulation of metals have been derived in the past, but verification in the field is often lacking. In the present study, the authors collected field data on bioaccumulation in caged Daphnia magna and Gammarus roeseli in 12 different contaminated brooks. Besides generating a comprehensive data set on bioaccumulation for these species, the authors also checked whether ...
-
Removal of organic wastewater contaminants in septic systems using advanced treatment technologies
The detection of pharmaceuticals and other organic wastewater contaminants (OWCs) in ground water and surface-water bodies has raised concerns about the possible ecological impacts of these compounds on nontarget organisms. On-site wastewater treatment systems represent a potentially significant route of entry for organic contaminants to the environment. In this study, effluent samples were ...
-
Assessment of groundwater resources using climatic and hydrologic budget methods
The Pageru River basin is situated in drought prone areas of the Rayalaseema region, Andhra Pradesh, South–India. In the absence of perennial surface water bodies, groundwater is an important source of water and has played an important role in developing industry, agricultural and domestic supply. In the present study, the efforts have been made to assess the groundwater resources using both ...
-
Water Cycle
The sun, which drives the water cycle, heats water in oceans and seas. Water evaporates as water vapor into the air. Ice and snow can sublimate directly into water vapor. Evapotranspiration is water transpired from plants and evaporated from the soil. Rising air currents take the vapor up into the atmosphere where cooler temperatures cause it to condense into clouds. Air currents move water vapor ...
-
Finite element modelling of a heavily exploited coastal aquifer for assessing the response of groundwater level to the changes in pumping and rainfall variation due to climate change
Coastal aquifers are always under threat of seawater intrusion due to over-extraction of groundwater. The objective here is to assess aquifer response to variation in pumping and rainfall recharge due to projected climate change by groundwater modelling in a heavily exploited aquifer. Finite element groundwater flow modelling was carried out from March 1988 to December 2030 using FEFLOW ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you