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2006-10-01 News Release
Selective resins offer efficient removal of nitrates from water The Advanced AMBERPACK municipal water system for more efficient nitrate removal is a combination of highly selective nitrate resins and fractal distribution technology.
Nitrate contamination of drinking water has been increasing in many agricultural
regions and become a concern for many water works. Rohm and Haas Advanced
AMBERPACK* municipal system for the removal of nitrate is easy to operate
and minimizes brine waste volume to 0.3 % -1 % of the water produced while
generating yields superior to 99 %. Rohm and Haas has been a leading and innovative manufacturer of ion exchange
resin, adsorbents and catalysts. These polymers are able to replace undesirable
particles in solutions with more favorable ones and can be used to purify,
separate or enrich substances from the treated liquid. Nitrate selective resins like the AMBERLITE* PWA5 nitrate selective resin used in Advanced AMBERPACK municipal system for nitrate removal have a better affinity for nitrate than for chloride, sulphate and bicarbonate compared to conventional strongly basic resins, which allows for more efficient removal of nitrate from water. The resin is registered in Europe for water applications. Minimizing waste is the key to making ion exchange processes sustainable and economical. The Advanced AMBERPACK municipal system with the fractal distribution technology can minimize brine waste volumes to 0.3 % to 1 % of the total water produced, generating yields superior to 99 %. The system yields near perfect plug flow, greatly reducing the mixing between brine fraction and rinse fraction of the regenerant stream, thus reducing waste to near low theoretical levels. Additional features also contribute to the low waste performance: the flat head design practically eliminates the excess water retained in typical dished head pressure vessels and the recovered rinse water tank allows further decrease of the service water. The Advanced AMBERPACKmunicipal system has a simple and modular design. It can be adapted to customer needs based on distinct potable water treatment specifications. Vessels can be operated independently and in parallel. When skid mounted, the foot print is 3,5 m x 1,8 m for 2 service vessels skid and 2 and 3,5 m x 2,2 m for the regeneration skid, with a height of 3 m. This low profile and small footprint allow for non obstructive placement onto small well site for the community and can save on land and building cost for new sites. Moreover, Rohm and Haas will be soon commercializing a Residuals Management system for Nitrate Destruction. 1 UK Department of the Environment, Food and Rural affairs – Drinking Water 2001 * The Advanced AMBERPACK municipal system and AMBERLITE are registered trademarks of Rohm and Haas. Find
Information about Rohm and Haas Company.
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