US Apple Flume: Non-Detect at 80% Less Chlorine

Home 9 Case Studies and Results 9 US Apple Flume: Non-Detect at 80% Less Chlorine
Key results
Up to 80% lower chlorine dose
Counts fell from 10⁷ to 10¹ cfu/mL
Non-detect held at 10 ppm

Case Study from HydroFLOW USA

The Challenge

  • Flume water microbial control remained inconsistent in heavily fouled water
  • Dirt and debris entered with bins and fruit
  • Bacteria and fungi remained at 10³–10⁷ cfu/mL
  • Pathogens and decay organisms required control
  • The Treatment Tank was running 40–50 ppm chlorine

The Solution

One HydroFLOW® unit was installed first on the 6 inch T-Dump recirculation pipe for the PAA reduction trial at the apple packing facility, then moved to the Treatment Tank for the chlorine reduction trial. With the signal running, microbial counts fell by several orders of magnitude at lower PAA doses, and non-detect results held at 10 ppm chlorine instead of 40–50 ppm. Staff also reported lighter wall debris that was easier to clean.

Key Outcomes

R

T-Dump counts fell from 10³–10⁷ to 10¹–10³ cfu/mL

R

Microbial control improved with PAA at 18–35 ppm

R

Non-detect results held as chlorine fell from 40–50 ppm to 10 ppm

R

Counts returned at 10¹–10³ cfu/mL when the signal was switched off

Independent Verification

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

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