1. La. Food Processors Conference Facility 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 Considerations For Upgrade or Expansion of Process Waste Treatment Facilities –Wastewater –Solid Waste

3. Should You Treat Your Wastewater or Not? Wastewater Disposal Options 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. Discharging Directly to Waterbody Advantages Advantages –Only choice if facility is not close to POTW collection system –There are no surcharges to pay DisAdvantages DisAdvantages –Operation and Maintenance of system can be costly –Much lower effluent limits than POTW (Typically 30 or 45 mg/l BOD 5 and TSS) –Requires NPDES Permit

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

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

7. Typical POTW Surcharges Sewerage and Water Board of New Orleans Excess Sewerage Formula 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 1 Million Gallons of Wastewater BOD 5 of 600 mg/l & TSS of 500 mg/l BOD 5 of 600 mg/l & TSS of 500 mg/lCalculations (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 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) 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 Only other significant source of pollution in Seafood Processing Recycled for use in mulches Recycled for use in mulches Alternative uses Alternative uses –Chitosan derived from Chitin found in crustacean shells has been used for: Clean stormwater Clean stormwater Fat-blockers in diet pills Fat-blockers in diet pills Thicken food, paint and makeup Thicken food, paint and makeup