It's spring and the algae are in bloom, but harmful algal blooms are far from the only threats to drinking water. Fortunately, there are advanced treatment technologies to handle some of the most persistent contaminants today, including algal toxins, Cryptosporidium, and 1,4-dioxane.
The North Texas Metropolitan Water District began working to add ozone to its four interconnected water treatment facilities which operate as the Wylie Water Treatment Plant (WTP).
WRT’s Z-88® Radium Removal treatment system was selected to remove high concentrations of radium in two treatment facilities for the City of Bridgeton, NJ. Both treatment facilities are now producing safer drinking water since the installation of the Z-88® Radium Removal treatment systems in 2009 and 2010.
Reverse osmosis, or RO, is one of the finest technologies to purify water containing high total dissolved solids (TDS) levels of more than 500 ppm. Reverse osmosis plant exporters explain the technology as a separation technology where dissolved and invisible impurities in water are separated with the help of semi-permeable membrane or RO membrane that works under high pressure.
The City of Southgate, California wanted to investigate the effect of replacing the existing media in their Well 27 treatment plant. The plant would not reduce the incoming manganese levels to below the 50 μg/l MCL. It has been theorized that the existing media has become fouled beyond cleaning during the one year plus of non-operation while contained in the filter tank full of water. That environment could produce a likely source of biological and other sources of fouling.
Water from Well 19 and 20 in Sacramento, California area was high in manganese and arsenic. Due to the high levels, the wells were not being used to supply municipal water to the District. Each facility is planned to initially produce and treat approximately 600 gpm with a future expansion capacity to 1200 gpm.
Arsenic is a global environmental health issue. Since it was recognized in the nineties many techniques have been developed on the remediation on arsenic contaminated drinking water. Solving people’s exposure through drinking water to arsenic is, however, a complex problem.
This report summarizes results and conclusions of a groundwater treatment pilot test program. This pilot test program was undertaken to demonstrate the effectiveness of water treatment products that employ oxidation and filtration to remove iron, manganese and arsenic to levels well below MCL’s. Operating data collected during the study will be used to confirm the design of fullscale facilities.
When the City of Midlothian, Texas, was ready to expand their water treatment plant to accommodate a growing population, they carefully considered and investigated their water disinfection options.
When Linda Mullen took over as water superintendent in Burnsville in 2007, the city was in the process of adding surface‐water treatment to its existing plant. Burnsville began purchasing water from the nearby Kraemer Mining and Materials quarry, both to supplement its supply and to help the quarry meet discharge permits.
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