Fully automatic tap water filtration and softening equipment

Fully automatic tap water filtration and softening equipment | Multi-stage purification · Intelligent regeneration

This equipment is specifically designed to solve the problems of suspended solids, sediment, rust, and calcium and magnesium ions (scale) in tap water. The system consists of a pre-filter, a fully automatic softening unit (softening tank, ion exchange resin, fully automatic control valve, brine tank), and a post-filter, achieving a stepped treatment process of "filtration first, then softening, and finally fine filtration," resulting in clear, soft, and scale-free water. It is widely used in household drinking water pretreatment, bathing water, boiler feedwater, catering, and commercial water applications.

core components

Pre-filter: PP cotton filter element, intercepts large particles such as sediment, rust, and suspended solids, protecting the subsequent softening system.

Softening tank and resin: High-quality food-grade cation exchange resin (sodium form), effectively removes calcium (Ca²⁺) and magnesium (Mg²⁺) ions from the water, preventing scale buildup at its source.

Fully automatic softening control valve: Integrated time/flow dual-control valve head, automatically completing the entire process of operation, backwashing, regeneration, forward washing, and water replenishment, requiring no manual operation.

Brine tank: Used to dissolve regeneration salt (sodium chloride) and periodically restore the resin's exchange capacity.

Post-filter: Precision PP cotton filter element, further trapping fine particles and improving the quality of the effluent.

Working principle

Pre-filtration: Raw water enters the pre-filter to remove large particles, ensuring the subsequent resin is not clogged.

Softening: Water flows through the sodium-type resin layer in the softening tank. Calcium and magnesium ions are adsorbed by the resin, displacing sodium ions, significantly reducing the hardness of the effluent (to ≤1-5 mg/L).

Fully Automatic Regeneration: When the resin becomes saturated (based on water consumption or a set time), the control valve automatically initiates the regeneration program—backwashing the resin with brine from the brine tank allows sodium ions to re-occupy exchange sites, while the displaced calcium and magnesium ions are discharged with the wastewater. The entire regeneration process is automated, requiring no manual intervention.

Post-filtration: Softened water finally passes through the post-filter to remove residual suspended solids, providing clean water.

Main advantages

Thorough Scale Inhibition: Effectively solves scale buildup problems in pipes, water heaters, boilers, and kettles, extending equipment lifespan.

Fully Automatic Intelligent Operation: Simply add salt to the brine tank periodically, and the equipment automatically regenerates according to a set cycle or flow rate, providing a continuous 24-hour supply of soft water.

Multi-Stage Filtration Combination: Pre- and post-filters work synergistically with the softening unit for high-quality output water.

Energy and Water Saving: Only a small amount of water and salt is required during regeneration; the equipment consumes no additional electricity during normal operation (control valve power consumption is extremely low).

Safe Materials: The resin tank and piping are made of fiberglass or food-grade stainless steel, and the brine tank is made of PE material, ensuring safety and corrosion resistance.

Flexible Configuration: Tank size, resin quantity, and control valve model can be customized to suit different raw water hardness and water consumption levels.

Technical parameters

Processing flow rate: 0.5 – 20 m³/h (customizable)

Raw water hardness: ≤10 mmol/L (higher hardness requires double or two-stage softening)

Outlet water hardness: ≤0.05 mmol/L

Operating pressure: 0.2 – 0.6 MPa

Operating temperature: 5 – 50℃

Pre-filter accuracy: 20 – 100 μm PP cotton

Softening tank material: Fiberglass (FRP) / 304 stainless steel

Post-filter accuracy: 1 – 5 μm PP cotton

Control valve type: Time-based / Flow-based (optional)

Power supply: Customized as needed (power for control valve)

Application areas

Whole-house water purification, shower soft water, and laundry hot water systems for homes; water supply for villas, apartments, and residential communities; drinking water for restaurants, cafes, bakeries, etc.; hotel laundry rooms, boiler rooms, and air conditioning cooling water systems; small industrial boilers, laboratories, and car washes. We can provide tank selection, resin filling volume, and regeneration cycle design based on your raw water quality report and hourly water consumption. Welcome to send your water quality parameters to obtain a customized solution.