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Introduction to the Mini -Pilot Treatment System

CEEN 572 Environmental Engineering Pilot Plant Laboratory . Introduction to the Mini -Pilot Treatment System. Mini -Pilot Treatment System. Mimics both conventional and direct filtration plant Direct filtration  skip sedimentation Appropriate for low-turbidity source water

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Introduction to the Mini -Pilot Treatment System

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  1. CEEN 572Environmental Engineering Pilot Plant Laboratory Introduction to the Mini-Pilot Treatment System

  2. Mini-Pilot Treatment System • Mimics both conventional and direct filtration plant • Direct filtration  skip sedimentation • Appropriate for low-turbidity source water • The min-pilot mimics CSM’s pilot system at the Golden WTP • Partially automated treatment system • Critical operating steps • Startup • Backwashing • Dose adjustments • Data retrieval

  3. Dual-Media Filter • Anthracite coal (1.55) and quartz sand (2.65) • More depth is utilized

  4. Anthracite 0.5 – 2 mm

  5. Dual-Media Filter

  6. Headloss Through Clean Granular Filters • Net available head = filter design headloss – clean-bed headloss • Insignificant in slow sand and pre-coat filtration, but important in rapid filtration

  7. Rapid Filtration – Filter Run • Effluent turbidity characterized by three distinct segments: • Ripening • media conditioning (15 min - 2 hr) • Sometimes contain two peaks • Size and duration can be reduced by proper backwashing procedure • Filter-to-waste line • Effective filtration • Steady state turbidity <0.1 NTU • Gradual increasing in head loss • Breakthrough • Filter can’t hold more particles • Effluent turbidity increases • Headloss increases

  8. Rapid Filtration – End of Filter Run • Can be triggered by several events and lead to backwash: • Breakthrough • Headloss • Increases beyond the available head through the process • Rapid filters are typically designed with 1.8-3 m (6-10 ft) available head • If in specific cases neither are reached within several days: utility initiate backwash after a set period of time

  9. Mini-Pilot Treatment System

  10. pH adjustment Backwash Waste Chlorine V-2 V-3 V-2 V-13 V-14 Coag. V-1 KMnO4 V-11 V-4 V-5 V-12 V-10 Backwash Lines V-7 V-9 pH Mini-Pilot Flow Diagram Flocculation Basin Overflow Feed Tank turbidimeter V-6 V-8

  11. Supervisory Control And Data Acquisition (SCADA) System

  12. Mini-pilot Control Panel

  13. Recovery of Logged Data

  14. Recovery of Logged Data

  15. Recovery of Logged Data

  16. Startup Procedure

  17. Operation Procedure

  18. Backwashing Procedure

  19. Shutdown Procedure

  20. 1 2 pH pH adjustment Mini-Pilot Flow Diagram Backwash Waste Chlorine V-1 V-3 V-2 V-13 V-14 Flocculation Basin Overflow Coagulant Feed Tank KMnO4 turbidimeter V-4 V-11 V-5 V-12 V-10 Backwash Lines V-6 V-7 V-9 V-8

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