Membrane processes can be classified in many ways, based on nature, structure or driving force. Hydrostatic pressure differences are used in microfiltration (MF), nanofiltration (NF), reverse osmosis (RO) and gas separation as the driving force for mass transport through the membrane.
Growing range of applications spans the water treatment spectrum
The town of Hudson Bay, with a population of 1,500 people, is located in the Red Deer Valley, between the Porcupine and Pasquia Hills in northeast Saskatchewan, Canada. It is widely known for its forestry, agriculture and wildlife.
Like many rural communities in the province, Hudson Bay is faced with treating a challenging potable water source. Its raw water is high in dissolved organic carbon (DOC), which can vary by 4 mg/L throughout the year. DOC is a known precursor to the formation of halogenated organic disinfection byproducts (DBPs) such as trihalomethanes.
Pretreatment system helps small town reduce DBP formation & chemical use
Workshop will be held in conjunction with the 2013 Tribal Utility Summit
On April 10, 2013, the U.S. Environmental Protection Agency, United South & Eastern Tribes, U.S. Department of Agriculture and Indian Health Service are co-hosting a one-day workshop in Nashville, Tenn., for tribes on small water and wastewater utility management. The workshop is being held in conjunction with the 2013 Tribal Utility Summit.
Update includes setting a limit for E. coli to better protect public health
The U.S. Environmental Protection Agency (EPA) has updated the rule for pathogens in drinking water, including setting a limit for E. coli to better protect public health.
The Revised Total Coliform Rule ensures that all of the approximately 155,000 public water systems in the U.S., which provide drinking water to more than 310 million people, take steps to prevent exposure to pathogens like E. coli. These types of pathogens can cause a variety of illnesses, with symptoms such as acute abdominal discomfort or, in more extreme cases, kidney failure or hepatitis.
UL will provide testing services for public water systems serving fewer than 10,000 people
Underwriters Laboratories Inc. (UL) has won a contract from the U.S. Environmental Protection Agency (EPA) to test samples from small public water systems serving 10,000 people or fewer for contaminants listed in the third cycle of EPA's Unregulated Contaminant Monitoring Rule (UCMR 3) program.
Power and water services restored to more than 130,000 rural customers
As part of federal efforts to provide necessary support to those affected by Hurricane Sandy, Agriculture Secretary Tom Vilsack announced that power and water services have been restored to more than 130,000 rural customers on U.S. Department of Agriculture (USDA)-financed systems in nine states.
Clean Water Systems & Stores Inc. now offers support for water well owners
Clean Water Systems & Stores Inc. has expanded its Water Quality Assurance Program to include support for water well owners who need to optimize their water treatment systems during the current drought. The drought has caused water shortages and some water tables to drop in affected areas and decreased water quality. The program provides tests water before and after existing treatment systems and includes recommendations on how to optimize water treatment systems to reduce water waste.
Clean water is essential for life. Nearly one billion people around the world lack access to safe water, and approximately 3.5 million deaths each year are linked to water-related diseases. The scarcity of clean water is most apparent in developing countries, where limited resources are available for water treatment.
UV systems provide clean, safe water for Rwandan communities
One Touch Water's water purification system offers green alternative to bottled water
One Touch Water secured an online deal with Aquamatic to help customers improve the way they consume water. With an advanced tap water purification technology, the company offers purchase, lease and no-contract month-to-month options for innovative systems that feature bottled water quality but bottle-less technology with do-it-yourself installation and twist off filters for easy maintenance.
Funds will help drinking water and wastewater treatment systems meet federal and state regulations
The U.S. Environmental Protection Agency (EPA) has awarded nearly $15 million in funding to provide training and technical assistance to small drinking and wastewater systems – those serving fewer than 10,000 people – and to private well owners. The funding will help provide training and tools to improve small system operations and management practices, promoting sustainability and supporting EPA’s mission to protect public health and the environment.