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The WECO Backwashing filter with granular activated alumina is a Point-Of-Entry (POE) fluoride and arsenic removal system for municipal and well water supplies. Activated alumina (aluminum oxide) is highly specialized filter media designed for efficient, selective removal of fluoride and arsenic.
Our activated alumina is pre-treated to acidify and lower the internal pH of the media. High pH greatly reduces the ability of activated alumina to remove fluoride and arsenic. The acid pre-treatment gives the media a strong affinity for these substances. Activated alumina’s adsorption capacity is reduced by high pH (above 8.2) feedwater and a bicarbonate alkalinity above 50 ppm. In such cases, we recommend pre-treating the feed water with a salt regenerated strong base anion (SBA) resin (a dealkalizer). This will reduce both the pH and the alkalinity for dramatically improved performance. In addition, SBA resin has a modest capacity to reduce the arsenic and fluoride levels of the feed water, prolonging the capacity and life of the alumina polisher. WECO can assist with selecting the proper pre-treatment backwashing filter to complement the activated alumina filter.
Pressure drop remains low and backwashing requirements are minimized. This reduces water use and prevents fluoride and arsenic-laden fine discharge into the sewer. WECO backwashing filters are available in a variety of sizes. Please consult with WECO for assistance in selecting the proper size filter to meet your water purification requirements.
David G.
2025-06-16 16:51:28
We have elevated levels of both fluoride and arsenic that cannot be treated by regular water filtration systems. I should note that we did get a water analysis on our well and sent it to weco filters before we made the purchase. Weco engineers recommended the AAL whole house filter combined with CCMG whole house filter as part of a redundant system design. A Hydra-75PMP under sink ro for drinking water at the kitchen is also installed, just to be safe, as requested by the manufacturer.Water tests indicate no detectable arsenic in water while the fluoride level has gone way below the epa maximum. I notice no pressure loss after the installation of the filter combination although must note this takes some considerable space in the basement, especially if you plumb it with a reasonable clearance from the wall.Filters are relatively silent until they start to backwash and clean themselves, which happens every Tuesday at night.
Angelo L.
2025-05-02 16:23:06
The system was really easy to setup and we could see the difference immediately. Arsenic and fluoride now are down to non detectable levels. Spent a lot of time having our water analysed, getting outrageously high priced in-home estimates and doing research online before discovering weco filters.
Francis Lofl
2024-12-29 17:17:05
This is well worth the investment if you have fluoride issues. I deal with bone char, activated carbon and even considered whole house ro before finding out this system can save me a ton of money in the long run. Thanks to WECO now we have reduced the fluoride level to below 2 parts.
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