Hard water softening systems, also known as Softeners, treat hardness in water using the ion exchange method, which is the most effective method, and is easy to operate compared to methods such as using lime, chemistry, boil…

Uses of Hard Water Softening System 

– Completely treat hardness in water using ion exchange method
– Limit scaling of water pipes and boilers.
– Reduce fuel consumption due to deposits
– Reduce consumption of washing powder and detergent

Advantages of Nam Viet hard water softening system

– Fast fabrication and installation, usually we fabricate at the factory and install at the factory within 1-3 days.
– Support for customers when warranty expires.
– The technical team will resolve the problem within 24 hours
– Provide technical guidance to the factory before handover
– Provide chemicals to quickly test hardness
Softener làm mềm nước cứng

Nam Viet Engineering provides guidance to Hoa Sen Binh Dinh Steel Sheet Factory Engineering

Principle of hard water softening system 

The softening system operates on the principle of ion exchange. The filter material is ion exchange resin that will retain the ions that cause hardness and when enough hardness has been absorbed, it will be discharged through the regeneration process. Water passing through the Na-cationite resin layer will cause the following reactions:

2R-Na + Ca(HCO3)2↔ R2-Ca + 2 NaHCO3

2R-Na + Mg(HCO3)2↔ R2-Mg + 2 NaHCO3

2R-Na + CaCl2↔ R2-Ca + 2 NaCl

2R-Na + CaSO4↔ R2-Ca +  Na2SO4

2R-Na + MgSO4↔ R2-Mg +  Na2SO4

  • According to the level of water filtration through the Na-cationite particle layer, more and more of its active Na groups are replaced by Ca2+ and Mg2+ ions of water.
  • Finally, the exchange capacity of Na-catonite is completely exhausted.
  • To restore the exchange capacity of Na-cationite, the filter material layer is washed with a solution with a high concentration of Na+ ions, for example table salt solution.
  • This process is called reconstitution

2R-Ca + NaCl ↔ 2R-Na +  CaCl2

  • The process of softening water with Na-cationite can reduce the Ca2+ and Mg2+ content in water to very small values, leaving the pH and total alkalinity of the water unchanged.
  • Choosing a water softening method must be based on the required water quality after treatment and the dissolved salt content in the source water.
  • In all cases where the only need is to reduce hardness, the Na-cationite softening method is the most effective and economical.

Main components of an Industrial water softener system

softener lam mem nuoc

Water softening system installed by Nam Viet ETC at Heineken Vung Tau factory

  • Composite FRP filter tanks can withstand high pressure, are compact, and resist chemical corrosion. The filter tank contains filter material inside including sand and plastic granules.
  • Autovalve Clack: Controls operating modes and regeneration completely automatically according to the pre-installed program.
  • Electrical cabinets are used for control.
  • Turbochargers
  • Connecting pipe systems, valves, pressure gauges…
  • The salt tank contains a salt solution that regenerates plastic beads.
  • System support frame.

Nam Viet ETC is a unit specializing in providing and installing hard water softening systems using the ion exchange method. The system we install can handle water hardness <1mg/l, is easy to operate, easy to control and ensures no salt water leaks into the system, causing corrosion.

Please contact us for a free consultation. Hotline 0932 562 177

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