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Presenter: James Griffin, Executive Sales Triflo International

Advantages of Dewatering and Sediment Separation. Utilized in high density areas - Residential and Industrial3 Stage Process - Selective separation - Large - Medium - Small Particles RemovedProcess slurries with high solids fed directly from the dredgeCan be used in areas that are environmentally

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Presenter: James Griffin, Executive Sales Triflo International

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    1. Presenter: James Griffin, Executive Sales Triflo International Dredged Slurry Separation System

    2. Advantages of Dewatering and Sediment Separation Utilized in high density areas - Residential and Industrial 3 Stage Process - Selective separation - Large - Medium - Small Particles Removed Process slurries with high solids fed directly from the dredge Can be used in areas that are environmentally sensitive. Solids removed can be loaded into roll off containers - Onto belt loading conveyors to trucks for proper disposal. End product passes paint filter test and is stackable. 3 - Minute test involves - Paint Filter - Produced Solids No water passing through the filter. Product can be recycled back into the local environment & used for fill material (if not proven to be toxic). Totally mechanical process and no chemicals are used. Very low noise level. Minimizes use of GeoTubes. GeoTubes - Final clarification. Minimum equipment foot print required for selective processing volumes High mobility

    3. OVERVIEW What is a separation system? Basic operation. Basic characteristics. Controls for scalpers and hydro cyclones Dredge compatibility and size limits. Power and general system costs Advantages & Disadvantages Case Studies Conclusions

    4. What is a separation system? Unit that separates liquid and solids 3 - stage system Continuous What are the components? Fluid holding tank Scalping Shakers 10” Hydro clones over secondary shakers 4” Hydro clones over shakers Fluid Pumps (centrifugal) Fluid discharge pump Agitators (Internal)

    5. Basic Operation Process schematic (flow diagram for slurry and sediments.)

    7. Basics of a Scalper Similar info as for hydro cyclone Scalper - Vibrating - Elliptical motion screen Removes Large debris, sticks - rocks - glass - cans - etc.

    8. Phase One Scalping Shaker/s

    9. Basics of a Hydro cyclone How does it work and what are the limitations and controls? Centrifugal (internal) force 3 - openings - Feed - Solids discharge - Effluent discharge Feed inlet Effluent discharge Solids discharge No moving parts Polyurethane Construction Cone size determines particle size removal 10” Cone 74 microns + 4” Cone 25 microns + Volume through put 10” = 500 GPM 4” 65 GPM

    10. Phase Two 210146 Fluid Processors

    11. Phase Three 164146 Fluid Processors

    12. Dredge Compatibility What range of dredge size, flow rate, specific gravity, sediment, concentration? 1000 GPM - 2000 GPM - 4000 GPM Standard sizes - 1000 GPM - 2000 GPM Higher specific gravity the better. 15% by weight ideal Continuous or noncontinuous operation limitations? Continuous operation

    13. Separation System Power Requirements What size and type of power plants are used? On site generators - 400 KW (2000 GPM) 275KW (1000 GPM) Pole Power (line)

    14. General Costs Can you provide some general cost ranges depending on tons/hr, GPM, dredge size (8in, 10in, etc.)? $100 / day - maintenance for screens - pump packing electrical Does not cover fuel cost Does not cover labor 1000 GPM average cost per ton .50 cents 2000 GPM average cost per ton .50 cents Producing more tons per hour

    15. Case Study #1 3900 Acre Lake Dredging Project - upper East Texas Purpose - Boat owners unable to launch boats - Silted up Lagoons Scope of this project: Remove 40,000 cubic yards of debris - sand - silt Volume Processing:1000 Gallons of dredged slurry per minute - direct feed from dredge Solids feed per hour: 10% - 1/2 ton per minutes. 30 Tons per hour. Majority of material removed inorganic - Most of which was recycled. Finer sand - used as Mortar sand Coarser sand used as cement sand. Cost per ton: .50 cents for maintenance. Other cost not known.

    16. Lake Cherokee, Texas

    17. Lake Cherokee, Texas

    18. Lake Cherokee, Texas

    19. Lake Cherokee, Texas

    20. Conclusion Satisfied HOA (Home owner association) No disturbance to property No complaints about noise Homeowners received free material

    21. Case study #2 Dredging project located southwest of Washington D.C. 55 acre lake dredging project Purpose: Deepen lake - never dredged before Scope of the Project: 1st phase - 2 years 2nd phase 1 1/2 years. Volume processing rate: 4000 gallons per minute direct feed from dredge. Solids loading: 10% 2 tons of product per minute or 120 tons per hour.

    22. Washington DC 2006

    23. Washington DC 2006

    24. Washington DC 2006

    25. Conclusion All material removed was used for fill in purposes (non-contaminated material). Project is currently on-going working in the second phase of sedimentation removal and haul off.

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