Removal of Arsenic:

With strong support from USEPA through the SBIR program, AEI had developed a highly selective polymeric-inorganic hybrid exchange media (HIX) for removal of all forms of Arsenic from drinking water streams. The HIX media has been commercially used to design-build many treatment systems to selectively remove Arsenic from drinking water. The treatment systems have proved to be significantly more attractive than competing systems in terms of Capital and O&M costs, bed longevity, removal efficiency and negligible generation of secondary wastes.

See P&ID (Piping and Instrumentation Diagram)


Removal of Uranium:

AEI has engineered and installed treatment systems for removal of Uranium from drinking water streams. The systems utilized strong base anion exchange resins to selectively remove Uranium. The operation of the treatment systems are proving out to be cost effective and efficient in terms of long term bed usage and meeting consistent water qualities below MCL. The spent resin, loaded with uranium, can be removed from the resin columns, packaged and transported to a low level waste burial ground for disposal as low level radioactive waste (LLRW).

See P&ID (Piping and Instrumentation Diagram)


Removal of Fluoride:

Using Activated Alumina (AA) as an adsorbent, AEI has designed and built treatment systems for removal of Fluoride from drinking water streams. Depending on the levels of Fluoride, the AA media loads up with Fluoride requiring regeneration. The regeneration of the AA media can be achieved using dilute caustic solution. The regenerated AA media can be reused and the Brine solution generated from regeneration activities can be disposed of as a non-hazardous waste. 


Removal of Nitrate:

Nitrates are present in the water streams as an anion like the Uranium and some form of  Arsenic. Strong base anion exchange resins used for removal of Uranium also removes nitrates. For a drinking water well that has only Nitrate as a contaminant, it is not an issue as the resin will only pick up nitrate. However, for an water well with multi contaminants such as Nitrate and Uranium, one needs to be careful as the resin will pick up both of those contaminants and could potentially make the resin a low level radioactive waste (LLRW). AEI has designed and built treatment systems for removal of nitrate as a singular or in a multi-contaminant train that are working well in commercial applications.

See P&ID (Piping and Instrumentation Diagram)

California Water Service-Upper Bodfish Arsenic
Treatment System