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Ochre Volume Minimisation

The School of Engineering. Ochre Volume Minimisation. or Ochre Concentration. Matt Dey. The Team. Keith Williams Fred Pooley Liyuan Liang Devin Sapsford Chris Bullen Andrew Barnes. Active Treatment. Industrial Partners. Standard chemical precipitation. Neutralisation reagent.

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Ochre Volume Minimisation

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  1. The School of Engineering Ochre Volume Minimisation orOchre Concentration Matt Dey

  2. The Team • Keith Williams • Fred Pooley • Liyuan Liang • Devin Sapsford • Chris Bullen • Andrew Barnes

  3. Active Treatment • Industrial Partners

  4. Standard chemical precipitation Neutralisation reagent Effluent Mixer/Aerator Clean water Neutralisation reactor Clarifier/Thickener Solids

  5. Chemical precipitation

  6. Effluent Neutralisation reagent Flocculant reagent Neutralisation reactor Floc reactor Clarifier/Thickener Recirculated solids Solids HDS

  7. Bench tests

  8. Different neutralisation reagents Ca(OH)2

  9. Different neutralisation reagents NaOH

  10. Different neutralisation reagents Mg(OH)2

  11. Shear

  12. First stage reactor Second stage reactor Flocculation Pilot Plant

  13. Active PlantHorden

  14. Passive Treatment • Partners

  15. Worsley Delph & Bridgewater Canal Influent Bed of sand Effluent Pump Canal

  16. Results

  17. Taff Merthyr IBC design Influent Effluent Bed of pea gravel

  18. Results

  19. EPSRC Funded Research • Approximately 6 x 4m tank, 2m deep • Up to 4l/s (14.4m3/hr) flowrate • 3 years in the field operation • Optimise ochre accretion/filtration • Under drainage to aid in ochre thickening

  20. Will it work? Palenna

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