river pollution Articles

171 Results found
  • Category: Water & Wastewater ×

  • Subcategory: Water Resources ×

  • Keyword: river pollution ×

Modelling of point and diffuse pollution: application of the Moneris model in the Ipojuca river basin, Pernambuco State, Brazil

by IWA Publishing  (Jul. 19, 2013)

Emissions of pollutants and nutrients are causing several problems in aquatic ecosystems, and in general an excess of nutrients, specifically nitrogen and phosphorus, is responsible for the eutrophication process in water bodies. In most developed countries, more attention is given to diffuse pollution because problems with point pollution have ...

Land use patterns and organic pollution in the rivers

by Inderscience Publishers  (Jun. 28, 2011)

The riverine system is an important resource of water supply to the communities but rivers are being contaminated due to organic pollutants, which is a serious problem. Organic contamination has been discussed with regard to the different rivers of the world. Various organic pollutants, detected in water and the sediment of the rivers, have been ...

Water Pollution

by IWA Publishing  (Jul. 25, 2012)

Water pollution is a major global problem that requires ongoing evaluation and revision of water resource policy at all levels (from international down to individual aquifers and wells). It has been suggested that it is the leading worldwide cause of deaths and diseases, and that it accounts for the deaths of more than 14,000 people daily. In ...

A hydrodynamic water quality model for propagation of pollutants in rivers

by IWA Publishing  (Jul. 1, 2010)

Numerical modelling can be a useful tool to assess a receiving water body's quality state. Indeed, the use of mathematical models in river water quality management has become a common practice to show the cause-effect relationship between emissions and water body quality and to design as well as assess the effectiveness of mitigation measures. In ...

Monitoring and assessing heavy metals in topsoils as potential diffuse pollutants in the Pyeongchang River Basin, Korea

by IWA Publishing  (Jun. 1, 2010)

Topsoils, mainly from crop fields, orchards, forests, and barns around the Pyeongchang River, were collected to investigate their heavy metal concentrations. Pollution load index, ecological risk index, and enrichment factor were applied to assess levels of heavy metal contamination for topsoils. The concentrations of cadmium (Cd) (1.7 mg/kg) and ...

Current pollution status of Yangtze River and controlling measures

by Inderscience Publishers  (May 15, 2008)

The concentration of Persistent Organic Pollutants in Yangtze River in China is increasing steadily, especially in the downstream, where the drainage is often discharged into the water body without any treatment. In this study, the pollution status, trend of mainstream and Three Gorges area are analysed based on the statistical data of the water ...

OVA5000 used to gather river quality data in Greece

by Modern Water - Monitoring Division  (Jun. 25, 2010)

Cogent Environmental, in collaboration with its Greek partner, has recently completed a successful installation of one of its online heavy metal analysers, the OVA5000, in a remote location in the Amvrakikos Kolpos region of Greece. Cogent Environmental’s capabilities Cogent Environmental Ltd specialises in the development of online ...

Using a constructed wetland for non-point source pollution control and river water quality purification: a case study in Taiwan

by IWA Publishing  (May 1, 2010)

The Kaoping River Rail Bridge Constructed Wetland, which was commissioned in 2004, is one of the largest constructed wetlands in Taiwan. This multi-function wetland has been designed for the purposes of non-point source (NPS) pollutant removal, wastewater treatment, wildlife habitat, recreation, and education. The major influents of this wetland ...

Self-purification process and retention of nitrogen in floodplains of River Nemunas

by IWA Publishing  (Jun. 1, 2010)

Due to its catchment size and its significant level of agricultural pollution, the Nemunas river basin has been identified as an agricultural hot spot in the Baltic Sea basin. On average, the total annual inorganic nitrogen runoff into the river is 26.9 × 106 kg, which corresponds to a load of 275 kg km−2 yr−1. A submerged floodplain, covering ...

Pollution assessment of the impact of industrial effluents on the qualities of surface water and sediments of River Ona in Ibadan, Oyo state, Nigeria

by Inderscience Publishers  (Apr. 19, 2010)

River Ona, a major river in Ibadan, into which industries discharge their effluents, was studied to assess the impact of the industrial discharge. The mean levels for some parameters gave evidence of pollution. The mean values for DO (4.9 ± 0.3 mg/l), COD (54.5 ± 0.5 mg/l), PO43− (0.47 ± 0.09 mg/l), SO42− (20.65 ± 0.85 mg/l) were reported for the ...

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