Dallas Group of America

Industrial Scale Demonstration For Magnesium Silicate Recovery

1. Client Goals

  • To recover valuable magnesium silicates from the washing water
  • To concentrate recovered magnesium silicate slurry to be blended back to manufacturing process
  • To remove any suspended solids in the wash water to reduce the workload of following RO system

2. Challenges

  •  Waste stream fouling RO systems 

3. Expectation on FMX

  • Achieve maximum recovery rate of lost magnesium silicate in the wash water while producing suspended-solids free permeate for further RO treatment for water recovery to reduce surcharges for wastewater treatment

4. Test Results Summary

  • Currently, average Flux 314 LMH at 96% recovery rate
  • CIP Frequency: once per month
  • Hot Water Flush: after every batch concentration
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5. Conclusion

Over the four-week test period, the FMX-E5 pilot unit was able to maintain the desired performance that was determined during previous in-house testing. This performance is representative of that expected from the full-scale unit. The sustained performance of the membrane filtration media to process the application-specific influent stream over this prolonged process time verifies the feasibility of the FMX technology for use in this application.

These results indicate that the Anti-Fouling FMX technology utilized in the outlined process train provides ideal solution for:

  • The reduction of TSS to non-detectable levels in the permeate
  • Higher concentration factors of the magnesium silicate product which will increase the client’s profits on their product
  • Increased water recovery
  • Overall stable operation at an industrial scale by increasing the efficiency of downstream equipment such as their conventional reverse osmosis system thus minimizing their city water usage.

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