Basin Water, Inc

Ion Exchange Technology

Molecules, from left to right, top to bottom: Bicarbonate (-1), Arsenate (-2), Nitrate (-1), Sulfate (-2), Perchlorate (-1), Two Water Molecules

Color Code: Red = Oxygen, Green = Chlorine, Yellow = Sulfur, sm Silver = Hydrogen, lrg Silver = Arsenic, Dark Blue = Nitrogen, Light Blue = Carbon

An arsenate anion (having two negative charges) can easily become attached to the two positively charged sites of an ion exchange resin. All of the ions shown above can also be absorbed by the resin in the same manner, meaning that the same technology can be applied to a variety of contaminants.

Resin trapping the Arsenic ion.

Operation of a Basin Water System

The Basin Water operating concept is straightforward:

Raw untreated water flows through the necessary number of beds to deliver an operator-selected, treated-water delivery rate. (Our unique, multiple-bed design allows adjusting both water quantity and quality.)
The ion exchange resin strips out contaminants as the water flows through the beds.
The above process continues until a bed approaches its absorption capacity.
When each bed approaches its absorption capacity, the regeneration cycle automatically initiates. This process consists of flowing a brine solution through the bed to strip the contaminants from the resin, and routing the waste to a disposal tank.
After completing the regeneration cycle, clean water is cycled through the bed to eliminate any residual brine solution.
Once the bed is free of contaminants and brine solution, it is returned to service.

> Next Page: What is Arsenic?


Arsenic
Arsenic Overview Customers News Basin Water's Turnkey Solution The Basin Water Advantage Ion Exchange Technology What is Arsenic? Dangers of Arsenic Other Contaminants Ion Exchange Technology > Next Page Molecules, from left to right, top to bottom: Bicarbonate (-1), Arsenate (-2), Nitrate (-1), Sulfate (-2), Perchlorate (-1), Two Water Molecules Color Code: Red = Oxygen, Green = Chlorine, Yellow = Sulfur, sm Silver = Hydrogen, lrg Silver = Arsenic, Dark Blue = Nitrogen, Light Blue = Carbon An arsenate anion (having two negative charges) can easily become attached to the two positively charged sites of an ion exchange resin. All of the ions shown above can also be absorbed by the resin in the same manner, meaning that the same technology can be applied to a variety of contaminants. Resin trapping the Arsenic ion. Operation of a Basin Water System The Basin Water operating concept is straightforward: Raw untreated water flows through the necessary number of beds to deliver an operator-selected, treated-water delivery rate. (Our unique, multiple-bed design allows adjusting both water quantity and quality.) The ion exchange resin strips out contaminants as the water flows through the beds. The above process continues until a bed approaches its absorption capacity. When each bed approaches its absorption capacity, the regeneration cycle automatically initiates. This process consists of flowing a brine solution through the bed to strip the contaminants from the resin, and routing the waste to a disposal tank. After completing the regeneration cycle, clean water is cycled through the bed to eliminate any residual brine solution. Once the bed is free of contaminants and brine solution, it is returned to service. > Next Page: What is Arsenic?
Copyright © Basin Water Inc. 2005, All Rights Reserved Worldwide.