Case Study | February 13, 2014

Using Membrane Contactor Technology To Extend Resin Bed Life

Source: Membrana
Membranecontactorsystem

In today’s economic environment when profits are reduced due to  rising costs, it is necessary to find ways to save time and money.  City Public Ser-vice, San Antonio, Texas, had a need to be more cost effective with their water system. The utility had an older system that could not be completely upgraded. Budget constraints prevented a complete system  replacement;  therefore, efforts were focused on improving operating efficiency of the existing system.

After a water analysis was performed, it was determined that a high amount of bicarbonate alkalinity present in the water was having a neg- ative effect on the anion bed life.  They investigated ways to remove this high amount of alkalinity from the system. After evaluating all of the options, City Public Service made the decision to put in a membrane degassing system be- tween  the  cation  and  anion  beds  to remove the free carbon dioxide (CO2).

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