INDION layered bed anion unit is a single vessel system  with  layers  of  two  resins, INDION LBA-WB on top of INDION LBA-SB with down flow service.  The  layered bed system provides the  high  chemical  efficiency  of  a two-bed weak base anion and strong base anion  system in a single vessel. Thus it saves the cost of additional vessel  and   its associate piping and valves. The layered bed   anion system  is  regenerated   always   by  the countercurrent mode  of  regeneration so that fresh caustic contacts first the LBA-SB resin at the bottom and provides  a  high  level    of   regeneration. This results in excellent treated water quality and high efficiency of regenerant utilisation in the system.

Advantages of Layered Bed Anion

• Single vessel

• Less flow area for installation

• Lowest capital cost

• Excellent treated water quality with respect to silica

• Highest Chemical Efficiency

• Conventional countercurrent regeneration procedure

• Contemporary design

• Utilization of existing manpower

• Easy to retrofit in the existing system

• Lowest cost of production of demineralized water

Application

Layered  Bed  Anion  is  proven   to  be an excellent choice for all plants as substitute of two bed weak base and strong base anion system since it provides an optimum balance between investment and operating cost. 

INDION LBA system can be selected to treat water with low alkalinity when the system has no degasser unit and where EMA is typically greater than 60% of the total anions. It can be selected to treat all other water when the system has degasser unit especially if EMA is not too low.