water pollution Articles
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Water Pollution
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 addition to the acute problems of water pollution in ...
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Projection pursuit cluster model based on genetic algorithm and its application in Karstic water pollution evaluation
A projection pursuit cluster model is used to resolve the problem of Karstic water pollution evaluation. First, the projection pursuit cluster model is stated. Then, a genetic algorithm is applied to optimise the projection direction of the projection pursuit cluster model, and the steps of the genetic algorithm are introduced in detail. Finally, a case study of Karstic water pollution evaluation ...
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Water pollution
Water pollution is a major problem in the global context. It has been suggested that it is the leading worldwide cause of deaths and diseases,1,2 and that it accounts for the deaths of more than 14,000 people daily.2 An estimated 700 million Indians have no access to a proper toilet, and 1,000 Indian children die of diarrheal sickness every day.3 Some 90% of China's cities suffer from ...
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Seattle Stormwater Management
Since the 1990s the city of Seattle – a major coastal seaport in the North West of the U.S. – has invested heavily in cleaning up and reducing severe pollution of the water environment. Some of the ideas to help prevent water pollution can be of great inspiration to cities in Europe. Read more ...
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Development of wastewater treatment in the Pearl Delta: a balancing act
This paper reviews the current state of water pollution in the Pearl Delta, highlights the main problems, and discusses how private participation may serve a catalytic function in the important task of preventing the world's biggest economic boom turning into an environmental disaster.Keywords: China, Pearl Delta, wastewater ...
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Hard coal as a potential low-cost adsorbent for removal of 4-chlorophenol from water
The potential use of raw hard coals as low-cost adsorbents for the removal of 4-chlorophenol (4-CP) from aqueous solutions was examined. The effect of experimental parameters such as the pH and salt presence was evaluated. The kinetic studies showed the equilibrium time was found to be 2 h for all of the adsorbents and that the adsorption process followed the pseudo-second order kinetic ...
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Examining social-economic factors in spatial and temporal change of water quality in red soil hilly region of South China: a case study in Hunan Province
The study examines the temporal-spatial variation of water quality by adopting the comprehensive Water Quality Index, and the relationships between economic development and water pollution in Hunan Province by the environmental Kuznets curve hypothesis. The results of temporal-spatial analysis show water pollution is worsening, the water environment in the west province is better than that in the ...
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Ecological Monitoring of Accidental Water Pollution - Operational Guide
An important component of Cedre’s work involves designing operational guides which present the results of studies, of experimental work and experience feedback from accidents which have occurred. This guide is aimed at decision-makers liable to be involved in designing and implementing ecological monitoring programmes in the aftermath of an accidental water pollution ...
By CEDRE
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Water pollution control and strategies in Finnish pulp and paper industries in the 20th century
This paper discusses and analyses the evolution of the Finnish pulp and paper industries and their water pollution control strategies. The Finnish pulp and paper mills are mainly located along water courses in inland areas. The earliest documents on water pollution date back to the early 1900s. In spite of the remarkably good record during recent decades in water pollution control, it can be ...
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Understanding environmental pollution concepts: a case study using school students in Argentina and Puerto Rico
This paper explores concepts about air, water and soil pollution that students of grades 7?9 have in Argentina and Puerto Rico. A structured questionnaire was used in the investigation. A quantitative analysis was carried out to characterise the occurrence and frequency of conceptual errors, and to analyse their decrease with an increase in the educational level of the students. The results ...
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Combating river pollution in China and India: policy measures and governance challenges
Severe water pollution is among the top policy priorities in both China and India. This paper undertakes a comparative case analysis to examine efforts in combating river pollution in two major rivers – the Yangtze in China and the Ganga in India. Our analysis suggests that efforts in combating river pollution in the two Asian giants have encountered substantial challenges, such as the lack ...
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An efficient model of stationary transport
An efficient method for construction of the residual current field and the concentration field of stationary transport model is presented for a basin with a flat bottom. The current and concentration fields are defined by various types of boundary conditions and measured values of the fields inside the basin. Reliability of the results is discussed.Keywords: dissolved substances, mathematical ...
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A study on synthetic regional environmental policies for utilising biomass resources
Due to the principles of mass balance, there is a trade-off between regional water pollution and global warming. However, local governments in charge of water pollution control usually try to reduce water pollution loads without thinking of the influences on global warming. This study aims to formulate a simulation/evaluation model that reflects material balance and evaluates the regional ...
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Urban Runoff
Urban runoff is surface runoff of rainwater created by urbanization. This runoff is a major source of water pollution in many parts of the United States and other urban communities worldwide. Continue reading the full article ...
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Abatement vs. treatment for efficient diffuse source water pollution management in terrestrial-marine systems
Marine ecosystems are affected by water pollution originating from coastal catchments. The delivery of water pollutants can be reduced through water pollution abatement as well as water pollution treatment. Hence, sustainable economic development of coastal regions requires balancing of the marginal costs from water pollution abatement and/or treatment and the associated marginal benefits from ...
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Hazardous water pollution in China
The people of the Sahecun village in China are currently suffering severe health problems due to dangerously hazardous water. The water pollution has been caused by heavy metal, which is a result of a lead mine that closed down more than ten years ago. Villagers of Sahecun are experiencing dreadfully painful swellings all over their bodies. The heavily polluted water is also causing all kinds of ...
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Review and recommendations on a water pollution control framework for the pulp and paper sector in China
The pulp and paper sector has been a significant source of water pollution in China for many years. The Chinese government has made great efforts on water pollution control for the pulp and paper sector. While actively participating in various international treaties and conventions related to environmental management and pollution control in this sector, China has created a comprehensive ...
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Application of water pollution detector
Background: The (nitrate) link between agriculture and water quality is nutrient abundance - I've always thought the main issue was with fertilizers. Excessive nutrient loss often leads to eutrophication of surface waters. This condition can lead to harmful algal blooms (HAB), which produce dangerous toxins and cause a drop in dissolved oxygen, killing fish in both marine and freshwater ...
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Subjective evaluation of urban environment: a case study in Beijing
There is a growing interest in Chinese citizens' attitudes towards economic reform and development, but little attention has been paid to their views on the urban environment. Based on the results of our recent survey in Beijing, this paper discusses the public awareness of the current urban natural and social environment, of the relationship between economic development and environment ...
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Draft preliminary report – Evaluation of the EcoTank project at Negombo, Sri Lanka
Between September 28 and 30, 2011 an evaluation of the Negombo Sri Lanka EcoTanks project was conducted by David Robbins of RTI International. The purpose of the evaluation was to determine if the EcoTank products were used appropriately, identify any issues with the development process, document lessons learned, and discuss next steps. The project objectives as stated by the Municipal Council ...
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