Layne RT Arsenic Removal Media
source: http://www.solmetex.com/water/technologies.html
We have had reasonable success with this product for commercial, residential and point-of-use applications.

The LayneRT™ difference:
LayneRT has been developed as a significant improvement on the efficiency and longevity of adsorptive arsenic media, thus lowering the operating cost associated with removing arsenic (arsenate and arsenite) from water. It’s ideal blend of selectivity and durability means that LayneRT can reliably and efficiently reduce arsenic to safe consumption levels. LayneRT is a long lasting, high capacity technology that provides rapid adsorption kinetics without generating any fines. Not only does LayneRT provide optimal flow dynamics, no backwashing (no onsite residuals), and a low pressure drop, but it is also regenerable, thereby mitigating the liability associated with waste disposal.
NSF/ANSI Standard 61 Certified
Longest lasting
Highest capacity
Lowest operating cost
Proven iron chemistry
No fines
No backwash
Regenerable
Limits liability associated with disposal
Optimal flow dynamics
Rapid adsorption kinetics
Spent media passes Toxicity Characteristic Leaching Procedure (TCLP)
Low pressure drop
Material:
LayneRT is comprised of a hybrid resin bead that is attrition resistant and does not generate flnes. Media comprised of granulated materials are friable and generate flues, which can lead to increased backpressure during operation requiring backwash, additional system complexity and more frequent maintenance.
No Backwash Required:
Backwash requirements add operational complexity, and generate flues containing an arsenic residual.
Arsenic Residuals:
LayneRT requires no backwash and does not generate arsenic-containing flues.
Disposal:
LayneRT may be returned for environmentally responsible disposal. Although most spent media pass TCLP, research supports that they leach arsenic under actual landfill conditions. ''TCLP Underestimates Leaching of Arsenic from Solid Residuals Under Landfill Conditions" Ghosh A., Mukiibi M., Ela W, Environ. Sci. Techno!., 2004, 38(17), pp 4677-82.
Regenerable:
Regeneration lowers long-term operating and maintenance costs and reduces the volume of solid waste by a factor of ten!
Minimum Contact Time:
A lower contact time enables systems using LayneRT to have a smaller system footprint, reducing facility requirements.
Chemistry:
Hydrous metal oxides are the industry accepted chemistry for binding arsenic.