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La. Food Processors Conference Facility Upgrade and Expansion Considerations for Treatment of Process Waste

La. Food Processors Conference Facility Upgrade and Expansion Considerations for Treatment of Process Waste. Todd Farrar, P.E.M. General Engineering & Environmental Companies, Inc. Topics. Considerations For Upgrade or Expansion of Process Waste Treatment Facilities Wastewater Solid Waste.

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La. Food Processors Conference Facility Upgrade and Expansion Considerations for Treatment of Process Waste

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  1. La. Food Processors ConferenceFacility Upgrade and Expansion Considerations for Treatment of Process Waste Todd Farrar, P.E.M. General Engineering & Environmental Companies, Inc.

  2. Topics • Considerations For Upgrade or Expansion of Process Waste Treatment Facilities • Wastewater • Solid Waste

  3. Should You Treat Your Wastewater or Not? • Wastewater Disposal Options • Discharge Directly to Waterbody with Treatment • Discharge to Publicly Owned Treatment Works (POTW) without Treatment • Discharge to POTW with Pre-Treatment

  4. Advantages Only choice if facility is not close to POTW collection system There are no surcharges to pay DisAdvantages Operation and Maintenance of system can be costly Much lower effluent limits than POTW (Typically 30 or 45 mg/l BOD5 and TSS) Requires NPDES Permit Discharging Directly to Waterbody

  5. Advantages No Capital Cost for Treatment Facilities No Operation and Maintenance Costs Disadvantage Expensive Surcharges Discharging to POTW without Treating Wastewater

  6. Advantages Lower or No Excess Sewerage Strength Surcharges Disadvantages Initial Capital Expenditure Higher Operations and Maintenance Costs Discharging to POTW with Pre-Treatment

  7. Typical POTW Surcharges Sewerage and Water Board of New Orleans Excess Sewerage Formula Charge = (Volume in million gallons x 8.34) x ($0.2092(Actual BOD5 – 285 mg/l) + ($0.1397(Actual TSS – 395 mg/l)

  8. Example Surcharge • 1 Million Gallons of Wastewater • BOD5 of 600 mg/l & TSS of 500 mg/l Calculations (1.0 x 8.34) x ($0.2092 x (600 – 285) + ($0.1397 x (500 – 395) = 8.34 x ($65.90 + 14.67) = $671.96

  9. Wastewater Reduction • Recycle Wastewater • POTW’s base Surcharges on Water Usage • Wastewater can be treated and reused • Typically water cost about $2,000.00 per million gallons (depending on location) • Process changes to reduce usage • Isolate “Clean” or non-process wastewater to be directed to Stormwater system

  10. Solid Waste • Only other significant source of pollution in Seafood Processing • Recycled for use in mulches • Alternative uses • Chitosan derived from Chitin found in crustacean shells has been used for: • Clean stormwater • Fat-blockers in diet pills • Thicken food, paint and makeup

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