water contamination Articles

  • Water Contaminants and Their Treatment

    Because many water contaminants are invisible and odorless, samples should be tested to determine a treatment plan. Many steps may be necessary to make water potable Many traditional sources of fresh water, both surface water and groundwater, may carry visible and invisible contaminants that make it unsuitable for consumption. The World Health Organization (WHO) has established Guidelines for ...


    By Fluence Corporation

  • Walkerton: requiem for the New Public Management in Ontario?

    In May 2000, seven residents of Walkerton, Ontario, died, and hundreds more became seriously ill as a result of the contamination of the town's water supply. Immediately, residents and environmental activists pointed to the weakening of the province's environment ministry as the principal cause. Since coming to power in 1995, the Progressive Conservatives had taken steps to privatise and ...


    By Inderscience Publishers

  • Biosensors - Using DNA as a biosensor to detect contaminants in water

    Biosensor - Using DNA to detect water contamination. ...


    By ANDalyze, Inc.

  • Canarina DESCAR software · outfall modeling · algorithms 12

    8.2.1.2 Separated ports.- We will solve this case by means of a iterative mathematical method B=max[Ltsin θ; 0,93Lt F-1/3] S=0.089 g’1/3 (H-e)5/3 Qb-2/3 e=SQ/BUa Qb= flow rate at each single port(m3/s). The number of iterations can modify by means of the parameter N_it of the function Calculation parameters of the program. Increasing N_it value, we increase the numeric ...

  • Pakistan Facing Deadly Water Contamination

    Drought, overdraft of aquifers, and water contamination all contribute to an ever-increasing water crisis in Pakistan. 40% of deaths in country are attributed to critical pollution problem An estimated 40% of all deaths in Pakistan are caused by ingesting contaminated water — water filled with industrial waste, arsenic, diseases, and sewage. As recently as the late 1990s, ...


    By Fluence Corporation

  • Water contamination in fuel: cause and effect

    Water exists in three physical states and depending on the surrounding conditions it finds its way to the fuel systems like the high pressure common rail (HPCR) fuel systems on diesel engines. The important point thereafter is to provide the best possible on-engine protection by securing the fuel injector systems from severe damage. As the environmental challenges and emission regulations become ...

  • Combined effect of water contamination with cobalt and nickel on metabolism of albino (wistar) rats

    Cobalt and nickel are essential trace metals in the human diet. They are also major components of the alloys employed in the plate and screw used for connecting bones in orthopedic surgery and in the manufacture of artificial organs (Kocijan et al., 2004). Cobalt is used also as coloring agents for pottery, ceramics, and glass. However, excessive amounts of these transitional metal ions are ...


    By University of Tehran

  • Water as a weapon in ancient times: considerations of technical and ethical aspects

    This paper addresses the issue of how water played a role in ancient conflicts, from the poisoning of water sources to flooding, to stop the advance of enemy armies. It deals with military actions quoted by several ancient Greek and Roman authors, who in some cases narrate these experiences first-hand. Although many abhorred such actions, they were considered tactical expedients to resort to, ...


    By IWA Publishing

  • Case Study - Isle of Wight (UK)

    The isle of Wight Council look after the Castlehaven Coastal Protection scheme in the Niton area of the island. They were having trouble with the ground water contamination, possibly from the septic tanks, which was causing iron related bacteria to grow in the ground stabilisation dewatering wells. ...


    By Aquabiotics Pty Ltd

  • Incorporating potable water sources and use habits into surveys that improve surrogate exposure estimates for water contaminants: the case of bisphenol A

    Human biomonitoring studies for water contaminants are often accompanied by surveys relying solely on total drinking water consumption rates, thus, failing to account for specific water sources (bottled and tap water) and use habits, such as water used for preparing cold/hot beverages (coffee, tea, juice, etc.). Despite the extensive use of bisphenol A (BPA) in polycarbonate (PC)-based water ...


    By IWA Publishing

  • Storm water contaminant loading following southern California wildfires

    Contaminant loading associated with stormwater runoff from recently burned areas is poorly understood, despite the fact that it has the potential to affect downstream water quality. The goal of the present study is to assess regional patterns of runoff and contaminant loading from wildfires in urban fringe areas of southern California. Postfire stormwater runoff was sampled from five wildfires ...


    By John Wiley & Sons, Ltd.

  • Canarina DESCAR software · water pollution · commands 15

    Export Picture.- With this command you will be able to export images and pictures (BMP files). These images will contain the background picture and the simulation results. Many programs, computer applications and word processors (AutoCad, 3d Studio, ArcView, MS Word,...) import BMP files. You will be able to load images generated by DESCAR. Print.- The users’ printer drivers and ...

  • A Forensic Approach to Solve a Ground Water Contamination Problem

    In 2000, a subdivision outside a small city in southeast Texas discovered that the water supply wells that individual households had drilled were contaminated with trichloroethylene or TCE as it is commonly called. Since the extent of TCE contamination seemed to extend for over a mile in length, it was thought the “event” or “events” leading to the contamination had occurred some years ago. The ...

  • A Faster and Better FluidScan with Version 5

    Measure water contamination in turbine oils down to 300 ppm The latest version of FluidScan software can detect total water presence as low as 300 ppm in turbine oils. The method provides an alternative to laboratory tests such as Karl Fischer titration when fast, simple, and reagent-free analysis is needed. In addition to measuring water contamination, the FluidScan analyzer provides ...


    By Spectro Scientific

  • Effect of pH on selective decomposition of target water contaminants onto porous TiO2 photocatalyst

    Non-selectivity of TiO2-based photocatalysis is a known drawback of this technology for full scale water treatment applications. It results in significant decline in decomposition of toxic target contaminants when other non-toxic organic compounds such as natural organic matter (NOM) compete in the reaction. Previously, size exclusion of large NOM onto the mesoporous structure of TiO2 ...


    By IWA Publishing

  • Visible light induced photocatalytic degradation of rhodamine B by magnetic bentonite

    The photocatalytic activity of magnetic bentonite, Fe3O4 nanoparticles decorated Al-pillared bentonite (Fe3O4/Al-B), for the degradation of rhodamine B (RhB) in the presence of H2O2 under visible light (VL) was evaluated. The effects of different reaction parameters such as catalyst dose, dye concentration and externally added H2O2 were also investigated. The magnetic bentonite showed good ...


    By IWA Publishing

  • Bio-toilets: Sustainable Solution to India’s Sanitation Challenge

    Sanitation facilities in India are alarming with over 600 million people (half of India's population) having no access to toilets. People are forced to defecate in the open. This poses health hazards, raises environmental concerns and leads to water contamination. This is coupled with the Indian Railways’s open-chute toilet system wherein the human waste drops on the rail tracks. Untreated ...


    By IWA Publishing

  • Fecal contamination of drinking water in Kericho District, Western Kenya: role of source and household water handling and hygiene practices

    Inadequate protection of water sources, and poor household hygienic and handling practices have exacerbated fecal water contamination in Kenya. This study evaluated the rate and correlates of thermotolerant coliform (TTC) household water contamination in Kericho District, Western Kenya. Culture and multiplex polymerase chain reaction (PCR) techniques were used to characterize TTCs. The disk ...


    By IWA Publishing

  • Study: Drinking Water Contaminants Cause 100,000 Cancers

    Researchers suggest ways to reduce risks in water sources A new Environmental Working Group (EWG) study of contaminants in drinking water, conducted between 2010 and 2017 in the United States, suggests they may cause 100,000 lifetime cancer cases. The research team of Sydney Evans, Chris Campbell, and Olga V. Naidenko attributed the cumulative risk primarily to arsenic, disinfection byproducts, ...


    By Fluence Corporation

  • A coupled stochastic/deterministic model to estimate the evolution of the risk of water contamination by pesticides across Canada

    Periodic assessments of the risk of water contamination by pesticides help decision makers to improve the sustainability of agricultural management practices. In Canada, when evaluating the risk of water contamination by pesticides, there are two main constraints. First, because the area of interest is large, a pesticide transport model with low computational running time is mandatory. Second, ...


    By John Wiley & Sons, Ltd.

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