Calculator
Salt Consumption Calculator for Water Softeners
Estimate softener salt consumption from water volume, hardness, and resin regeneration efficiency.
Calculator Inputs
Legend
Salt Consumption Calculator for Water Softeners guidance
Hardness load = water volume x hardness. Salt use = hardness load / softener efficiency.
Input meaning
- Daily water volume: enter the measured, quoted, or hospital-approved value in m3/day.
- Hardness as CaCO3: enter the measured, quoted, or hospital-approved value in mg/L.
- Softener efficiency: enter the measured, quoted, or hospital-approved value in kg hardness removed per kg salt.
Result interpretation
- Use the result as a planning estimate, not as a final approval by itself.
- Record the assumptions used so Procurement, Biomedical, Facilities, Finance, and vendors can review the same basis.
Assumptions
- Actual salt use depends on resin condition, regeneration settings, brine concentration, and feed-water variation.
- Use local water analysis and vendor settings for procurement specifications.
Biomedical use
- Use this calculator during RFQ preparation, technical evaluation, acceptance planning, service review, or biomedical workload planning.
How to identify the required values
Use these examples and common working ranges to choose values from gauges, labels, manuals, datasheets, RFQs, service reports, CMMS records, or hospital planning assumptions.
| Field | Example value | Common range | Tip |
|---|---|---|---|
| Daily water volume | Example: 10 m3/day. | Use measured or estimated daily pretreatment feed-water volume in m3/day. | Use measured feed-water or pretreatment volume where available. |
| Hardness as CaCO3 | Example: 200 mg/L. | Feed-water hardness varies widely; use local water analysis as mg/L CaCO3. | Use local water analysis as CaCO3. |
| Softener efficiency | Example: 0.18 kg hardness removed per kg salt. | Typical planning values may be around 0.10-0.25 kg hardness removed per kg salt; use vendor settings. | Use the vendor value if known; otherwise use a conservative planning value. |
Common ranges are starting points for hospital planning. For final procurement, acceptance testing, electrical design, medical gas design, radiation shielding, dialysis water systems, or clinical use, replace the example values with site-specific data and vendor-confirmed figures.
Input Checklist
Confirm these values before relying on the output for procurement, PM, or service planning.
- Daily water volume
- Hardness as CaCO3
- Softener efficiency
Safety And Engineering Notes
Use calculator outputs as planning estimates and verify critical systems with calibrated measurement or qualified engineering review.
- Actual salt use depends on resin condition, regeneration settings, brine concentration, and feed-water variation.
- Use local water analysis and vendor settings for procurement specifications.
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