Czech Concrete Plant: 75% Less Calcium Deposit

Home 9 Case Studies and Results 9 Czech Concrete Plant: 75% Less Calcium Deposit
Key results
75% deposit reduction (up to)
Improved measurement accuracy
Reduced system downtime

Calcium deposit reduction on recycled water pipelines

A calcium deposit reduction was needed at a Czech concrete plant, where recycled water with a high lime content was clogging pipes and valves. The water ran through DN80 pipelines at 70 litres every four minutes, continuously during production. Build-up was affecting the mass scale that dosed the mix, so accuracy was drifting, and frequent cleaning and shutdowns were needed. Three HydroFLOW® i130 units were fitted to the recycled water pipelines. Calcium deposits fell by 75%, encrustation in the pipes and valves was cut, and dosing accuracy improved. Cleaning and shutdowns became less frequent.

The Challenges

  • A calcium deposit reduction was needed with deposits clogging pipes and valves
  • The recycled water had a high lime content
  • Build-up was affecting the accuracy of the mass scale
  • Dosing accuracy was drifting as encrustation grew
  • Frequent cleaning and shutdowns were required

The Solution

  • Units installed: three HydroFLOW® i130
  • Installation point: recycled water pipelines
  • Pipe size: DN80
  • Water: recycled, high lime content, 70 litres every four minutes

The three units were fitted directly to the DN80 recycled water pipelines, on the loop the plant runs continuously during production. The signal disrupts the conditions that bond calcium to surfaces, cutting encrustation in pipes and valves and improving dosing accuracy. The calcium deposit reduction was measured at 75%.

Key Outcomes

R

Calcium encrustation cut by up to 75%

R

Frequent cleaning and shutdowns required

R

Mass scale measurement accuracy improved

R

High lime content in recycled water

Independent Verification

All results in this study were measured and verified by third-party facilities managers and technical staff.

Summary

Deposits fell by 75% on recycled water that is about as lime-rich as process water gets, so this is the figure to compare against, not a mains-water result. The mass scale accuracy gain is the one plant engineers tend to notice, because dosing precision is where deposits cost money in a concrete plant. Cleaning shutdowns fell in step with the deposits, and the three units have run without adjustment since installation.

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