Water Softening System for Absorbing Calcium & Magnesium Ions in Water

Water softening system is composed of FRP water tank and brine tank with ion exchange resin and water distributor, which is the last link of the pre-filter system in the water treatment industry, and it mainly adsorbs and removes Ca2+ and Mg2+ in water through ion exchange resin to achieve the purpose of reducing water hardness. The softened water can prevent the concentrate water end of the RO membrane from chemical scaling of carbonate, sulfate, Ca2+, and Mg2+ after entering the membrane treatment system, thus improving the performance of the membrane element and playing a role in ensuring the safe and stable operation of the system.

Water softening system structure drawing
Structures
  • Brine Tank. It is used to replace calcium and magnesium ions in the water softener tank to regenerate the ion exchange resin.
  • Ion Exchange Resin Water Softener. Water softener tank is an important part of the water softening system. It is is equipped with ion exchange resin and water distributor, and brine tank with the use of hard water into soft water.
  • Ion Exchange Resin. It exchanges ions with anions and cations in water, mainly absorbs calcium and magnesium ions in water, and outputs soft water.
  • Water Distributor. Upper and bottom distributors may need this system. Raw water can enter the water softener tank through the water inlet pipe and water distributor to achieve an even distribution of water.
  • Multiport Control Valve. This device can reduce your pipeline placement and make the system stable and smart running. Manual and automatic valves options are provided.
Benefits

Water softening system is the last link of water into the membrane purification system, used to remove calcium and magnesium ions from the water, and reduce water hardness. It protects pipelines and equipment from corrosion and damage and prevents the emergence of membrane material contaminated by impurities to extend the service life of the membrane.

Treated Elements

  • Calcium ions
  • Magnesium ions
  • Iron ions
  • Chloride ions
  • Carbonate
  • Other ions

Water Quality

  • Water Hardness: <17.1 ppm
Working Principle

Stage 1: RUN (Softening)

Switch the button to the "RUN" position and the system starts to soften. Raw water enters the control valve from the water inlet and enters the FRP tank and resin layer through the top water distributor, softened water flows along the center pipe and drains from the outlet. The softening process is complete.

Stage 2: Backwash

When the softening performance cannot meet the requirements, the backwash station starts. Switch the button to the "Backwash" position. Raw water enters the control valve from the water inlet and enters the FRP tanks along the inlet pipe and downstream water distributor to eliminate resin impurities. Then the water is discharged from the discharge port.

Stage 3: Regenerate

When the backwash is completed, the generation station starts. Switch the button to the "Generate" position, and raw water enters the control valve from the water inlet and enters the brine ejector. Water flows rapidly to the ejector outlet and produces negative pressure. The brine is drawn into the tanks and flows through the resin layer along the central pipe and the bottom water distributor to achieve resin regeneration. Rare water is then discharged from the discharge port.

Stage 4: Slow Wash

Switch the button to the "Slow Wash" station. The brine ball valve is closed, raw water enters the control valve from the inlet and then enters the tanks through the ejector, and continues to slowly wash the resin layer along the central pipe and bottom water distributor to eliminate resin impurities and brine. Then the water is discharged from the discharge port.

Stage 5: Wash

Raw water enters the control valve from the inlet and then enters the tanks through the top water distributor and flows towards the resin layer with a large amount of water to thoroughly flush the resin layer and residual brine, then the impurities and residual brine will be discharged from the discharge port.

Stage 6: Filling Water

Switch the button to the "Filling Water" station. Raw water enters the control valve through the inlet and the brine ball valve opens at the same time. The water enters the brine tank and fills the water. Upon completion of filling, it will enter the "RUN" (softening) station again.

Water softening system working principle
Applications
  • Drinking Water: softened drinking water tastes good and reduces the harm of impurities in the water to the human body.
  • Boiler Water: softened boiler water can reduce scale formation and damage to the boiler system.
  • Cooling Water: removing hardness in water, reducing scale and sediment formation, and prolonging the service life of equipment.
  • Wastewater: removing calcium and magnesium ions from water, and reducing water hardness, and scale and sediment formation in subsequent treatment.
  • Pharmaceutical & Chemical Industry: reducing equipment clogging and corrosion, protecting product quality, and improving production efficiency and safety.
  • Food & Beverage: reducing scale and sediment build-up on equipment, and improving product quality and hygiene standards.
  • Textile & Paper: reducing clogging and corrosion, improving textile and paper quality, and reducing equipment failure rates.