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Automatic
Water Softening Systems and Ion Exchangers
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Water softeners
remove divalent ions such as calcium and magnesium, which
contribute toward a high value of total water hardness.
Water hardness causes precipitation
of pipe and tank walls dogging effects and diminishing efficiency
of heat transfer in heat exchangers, water boilers, rinsing
machines, spraying nozzles, soap foaming and other such
processes.
Ion Exchange and Water
Softening systems are designed for water treatment and calcium/magnesium
removal.
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Applications
- Steam and
heating boilers
- Chemical, pharmaceutical
and electronic industries
- Laundries
- Textile industrial dyeing
plants
- Water circulation systems
for central air-conditioning
- Kitchenware, Bottles
and Cars Washing machines
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Principle of Operation
Hard filtrated water passes through a
column filled with an ion exchanger resin, which adsorbs the divalent
ions. When the ion exchanger reaches saturation, it is regenerated
using a sodium chloride solution (sodium cycle).
The Odis water softening system contains two units - one active
and one in regeneration or stand-by mode. The system can thus
supply soft water continuously.
Control
- For low flow rates, an automatic
controller valve (Fleck or Autotrol) is used to
supervise all system modes.
- For higher flow rates, a microprocessor
based PLC (Programmable Logic
Controller) is used.
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