Water Technology / Treatment

  • Himalayan glaciers decline less rapidly than previously feared

    Several hundreds of millions of people in Southeast Asia depend, to varying degrees, on the freshwater reservoirs of the Himalayan glaciers; it is thus important to detect the potential impact of climate changes on the Himalayan glaciers at an early stage; together with international researchers, glaciologists from the University of Zurich now show that the glaciers in the Himalayas are declining less rapidly than was previously thought; the scientists, however, see major hazard potential from outbursts of glacial lakes

  • Direct drinking water recycling could prevent floods

    The use of a more streamlined process to recycle wastewater could have saved Brisbane from severe flooding in 2011 and mitigated recent flood risks in NSW, a leading water expert says

  • Most states in U.S. unprepared for growing water threats to economy, health

    Only nine states in the United States have taken comprehensive steps to address their vulnerabilities to the water-related consequences of changes in climate — rainfall events which increase flooding risks to property and health change, and drought conditions which threaten supply for municipalities, agriculture, and industries — while twenty-nine states are unprepared for growing water threats to their economies and public health

  • Water scarcity in California's Bay-Delta necessitates “hard decisions”

    Simultaneously attaining a reliable water supply for California and protecting and rehabilitating its Bay-Delta ecosystem cannot be realized until better planning can identify how trade-offs between these two goals will be managed when water is limited

  • Harvesting energy, water from human waste

    Researchers begin developing prototype device for harvesting energy and clean drinking water from human waste; the device proposal beat more than 2,000 other proposals to receive funding from the Bill and Melinda Gates Foundation

  • Increase in groundwater demands due to climate change

    As precipitation becomes less frequent due to climate change, lake and reservoir levels will drop and people will increasingly turn to groundwater for agricultural, industrial, and drinking water needs; the resource accounts for nearly half of all drinking water worldwide, but recharges at a much slower rate than aboveground water sources and in many cases is nonrenewable

  • Poultry feathers-based filters remove arsenic from water

    Thousands of people die each year in developing countries from drinking arsenic-contaminated water; researchers develop inexpensive filters made from the modified protein (keratin) in poultry feathers to remove arsenic from drinking water

  • U.S. water shortages loom

    More than 1 in 3 counties in the United States could face a “high” or “extreme” risk of water shortages due to climate change by the middle of the twenty-first century; 7 in 10 of the more than 3,100 U.S. counties could face “some” risk of shortages of fresh water for drinking, farming, and other uses

  • Proposed EPA budget cuts funding from clean air and water grants

    President Obama’s latest proposed budget for fiscal year 2013 cuts $105 million from the Environmental Protection Agency’s (EPA) budget, primarily from funds aimed at treating wastewater and drinking water

  • A nano method to clean polluted water

    Decontaminating polluted waste water costs millions, but a new discovery by scientists at the University of Brighton could result in huge savings as well as delivering safer, cleaner water

  • Collecting rainwater could save U.S. residents $90 million a year

    Simply collecting rainwater could save U.S. residents millions of dollars each year on their water bills and drastically cut down on water consumption; a new study by the Natural Resources Defense Council examined the potential cost-savings in eight U.S. cities and found that residents could collectively save $90 million or more annually

  • Study: No direct link between fracking, groundwater contamination

    Hydraulic fracturing (fracking) involves the high-pressure injection of water, sand and chemicals into a shale seam, which causes the rock to shatter, releasing natural gas; preliminary findings from a study on the use of hydraulic fracturing in shale gas development suggest no direct link to reports of groundwater contamination

  • Groundwaterin some parts of U.S. susceptible to radium contamination

    A recent U.S. Geological Survey (USGS) study found that groundwater in aquifers on the East Coast and in the Central United States has the highest risk of contamination from radium, a naturally occurring radioactive element and known carcinogen

  • Advances in the use of photocatalysts to help keep water clean safe

    Photocatalysis involves the acceleration of chemical reactions using the power of light; researchers experiment with different types of photocatalysts to reduce nitrates in water

  • Innovative method of water purification

    The UN estimates that about 1.1 billion people currently lack access to safe water; forecasts suggest that freshwater may become the “oil” of the twenty-first century — expensive, scarce, and the cause of geo-political conflicts; scientists show a new method for purifying water