The Water Quality Assn.’s (WQA) Gold Seal product certification program continues to grow and expand to meet the needs of the industry. This is being accomplished while maintaining quality control procedures and customer service. Regulatory acceptance of Gold Seal certification has reached a new high with the addition of the U.S. Environmental Protection Agency’s (EPA) Energy Star program, which is now accepting the Gold Seal program for compliance of water coolers.
WQA prepares for new and ongoing ventures in 2013
It has been almost three years since California passed Assembly Bill 1366, allowing municipalities to ban the sale and use of water softeners. Water Quality Products Assistant Editor Nicole Bowling spoke with Mike Mecca, past president of the Pacific Water Quality Assn. (PWQA), about how the bans are affecting the local water quality industry.
Nicole Bowling: What is the status of the water softener ban legislation in California?
Water softener resin is extremely porous, which is beneficial because it allows for more surface area to capture calcium and other metals in source water. Surprisingly, 99% of ion exchange actually happens in the interior of the bead. Resin beads, ranging in size from 16 to 50 mesh, are abused daily during the backwash process and by contaminants in the source water. Resin could last much longer in these hostile environments with a few fairly inexpensive solutions.
Cleaning options to reduce resin fouling
Ion exchange resins used in softening, anion or deionization applications are designed to remove certain ionized substances from water. The resin beads typically range in size from 16 to 50 mesh (1.2 to 0.3 mm) and although they are designed for the removal of dissolved ions, they can become a very effective filter media.
In some specialty applications (e.g., condensate polishing) resins are used as much for their filtration properties as for their ion exchange characteristics. For the most part, however, it is a good idea to keep the resin bed free of suspended particles.
Cleaning and prevention to avoid fouling
Arsenic and uranium in drinking water supplies