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• PROVIDING WATER RECIRCULATION & WASTEWATER TREATMENT TECHNOLOGIES •

• PROVIDING WATER RECIRCULATION & WASTEWATER TREATMENT TECHNOLOGIES •. • SERVING THE LAND-BASED AQUACULTURE & FISH PROCESSING INDUSTRIES •. INTRODUCTION. • PROCESSING WASTEWATER OVERVIEW. • PROCESSING WASTEWATER TREATMENT. • PROCESSING WASTEWATER DISINFECTION. • IMPORTANT CONSIDERATIONS.

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• PROVIDING WATER RECIRCULATION & WASTEWATER TREATMENT TECHNOLOGIES •

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  1. • PROVIDING WATER RECIRCULATION & WASTEWATER TREATMENT TECHNOLOGIES • • SERVING THE LAND-BASED AQUACULTURE & FISH PROCESSING INDUSTRIES •

  2. INTRODUCTION • PROCESSING WASTEWATER OVERVIEW • PROCESSING WASTEWATER TREATMENT • PROCESSING WASTEWATER DISINFECTION • IMPORTANT CONSIDERATIONS SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  3. PROCESSING WASTEWATER OVERVIEW • SOURCES • VOLUMES • CHARACTERISTICS • CHALLENGES SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  4. PROCESSING WASTEWATER OVERVIEW SOURCES • Harvest bloodwater • Processing line wastewater • Processing area clean-up water • Storm water runoff from outdoor transfer areas SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  5. PROCESSING WASTEWATER OVERVIEW VOLUMES Processing Wastewater Sources Processing Line Wastewater (80%) Clean Up Water (7%) Transfer Area Runoff (3%) Harvest Bloodwater (10%) • Industry average is ~ 6 litres of wastewater generated per kg of salmon processed. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  6. PROCESSING WASTEWATER OVERVIEW CHARACTERISTICS • BOD - can range from ± 1500 mg/l (multi-source wastewater) to ± 6000 mg/l (harvest bloodwater). • TSS - can range from ± 500 mg/l (multi-source wastewater) to ± 1500 mg/l (harvest bloodwater). • FOG - can range from ± 100 mg/l (multi-source wastewater) to ± 1500 mg/l (harvest bloodwater).. • Salinity - depends upon processing water source. • Temperature - typically < 10° C. • Disease - varies from region to region (ie. ISA, IPN, etc.). SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  7. PROCESSING WASTEWATER OVERVIEW CHALLENGES • Variability • Cleaning agents • Temperature • Salinity • Fats and oils • “Catch all” approach SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  8. PROCESSING WASTEWATER TREATMENT MAJOR PROCESS STEPS IN PROCESS FLOW • Collection • Filtration • Equalization • Pretreatment • Separation SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  9. PROCESSING WASTEWATER TREATMENT COLLECTION • All processing wastewater sources directed to a common collection point. • Typical common collection point is a concrete sump equipped with submersible pump that is capable of handling heavy solids loading. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  10. PROCESSING WASTEWATER TREATMENT SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  11. PROCESSING WASTEWATER TREATMENT FILTRATION • Microscreen belt filter for primary treatment. • Removes suspended solids larger than 350 microns in particle size. • Reduces BOD, TSS, and FOG by up to 50%. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  12. PROCESSING WASTEWATER TREATMENT SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  13. PROCESSING WASTEWATER TREATMENT SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  14. PROCESSING WASTEWATER TREATMENT EQUALIZATION • Primary storage tank - typically sized to hold total volume of processing wastewater generated in one processing day. • Recirculation or aeration employed to continuously mix tank contents. • Accommodates batch processing and eliminates processing wastewater variability as a factor when operating as a flow through treatment system. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  15. PROCESSING WASTEWATER TREATMENT SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  16. PROCESSING WASTEWATER TREATMENT PRETREATMENT • Introduction of dissolved air. • Addition of chemicals: • Coagulation • Flocculation • pH adjustment • All chemical addition and mixing prior to separation. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  17. PROCESSING WASTEWATER TREATMENT SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  18. PROCESSING WASTEWATER TREATMENT SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  19. PROCESSING WASTEWATER TREATMENT SEPARATION • Dissolved Air Flotation (DAF). • Fine bubbles float precipitated particles to surface where they are skimmed off. • Further reduces BOD, TSS and FOG. • Well proven technology for meeting effluent quality regulations. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  20. PROCESSING WASTEWATER TREATMENT SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  21. PROCESSING WASTEWATER DISINFECTION MAJOR PROCESS STEPS IN PROCESS FLOW • Collection • Filtration • Equalization • Chlorination • Dechlorination SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  22. PROCESSING WASTEWATER DISINFECTION COLLECTION / FILTRATION / EQUALIZATION • Identical to steps already covered under Processing Wastewater Treatment. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  23. PROCESSING WASTEWATER DISINFECTION CHLORINATION • Accredited by the National Veterinary Institute of Norway to kill ISA and other viruses. • Disinfection dosage typically 50 ppm. • Disinfection contact time typically 15 minutes. • ORP used to monitor and control disinfection process. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  24. PROCESSING WASTEWATER DISINFECTION SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  25. PROCESSING WASTEWATER DISINFECTION SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  26. PROCESSING WASTEWATER DISINFECTION DECHLORINATION • Required in most jurisdictions through environmental protection legislation. • Dechlorination to < 0.5 ppm chlorine residual typically required. • Dechlorination chemical is injected in-line as disinfection tank is discharged. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  27. PROCESSING WASTEWATER DISINFECTION SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  28. IMPORTANT CONSIDERATIONS THINGS TO LOOK FOR WHEN SELECTING A SYSTEM • Integration • Automation • Flexibility • Reliability • Affordability SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  29. IMPORTANT CONSIDERATIONS INTEGRATION • If a processing wastewater treatment system is installed, it should be designed to integrate disinfection as an “add-in” component at a later date. • If a processing wastewater disinfection system is installed, it should be designed to integrate treatment as an “add-in” component at a later date. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  30. IMPORTANT CONSIDERATIONS AUTOMATION • The systemshould be PLC based for maximum automation, control and monitoring capability. • All critical operating information should be recorded by a data logger for troubleshooting, performance and regulatory compliance purposes. • The system should be equipped with a modem and dedicated phone line for remote access to monitor and control its operation. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  31. IMPORTANT CONSIDERATIONS SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  32. IMPORTANT CONSIDERATIONS FLEXIBILITY • System should be flexible to accommodate new discharge restrictions and/or biosecurity concerns with minimal modifications. • System layout should be flexible to accommodate existing spaces where necessary. • System chemical requirements should have some flexibility to accommodate local constraints related to cost and availability. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  33. IMPORTANT CONSIDERATIONS RELIABILITY • All equipment and components should be designed and selected for continuous operation in an industrial wastewater treatment environment. • The system should be designed to facilitate regular maintenance and minimize down-time when repairs are required. • Reliable service is as important as a reliable system - system suppliers must be able to provide dependable after-sale support. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  34. IMPORTANT CONSIDERATIONS AFFORDABILITY Capital cost dependant upon: • Treatment requirements • Disinfection requirements • System flow capacity requirements • Site specifics. Chemical Operating Cost Estimates: • Treatment : < $ 0.005 / US gallon • Disinfection : < $ 0.002 / US gallon SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  35. RECAP • Processing wastewater from all sources should be minimized to reduce both capital and operating costs. • Salmon processing wastewater presents unique challenges that must be taken into consideration when designing a treatment or disinfection system. • Processing wastewater treatment is designed to reduce levels of BOD, TSS, and FOG to below regulated discharge requirements. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  36. RECAP • Processing wastewater disinfection is designed to kill disease causing bacteria and viruses prior to discharge. • Processing wastewater treatment and disinfection can be integrated into one complete system that addresses both regulated water quality parameters and biosecurity. • A quality system for processing wastewater treatment and/or disinfection should be automated, flexible, reliable, and affordable. SALMON PROCESSING WASTEWATER TREATMENT AND DISINFECTION TECHNOLOGY

  37. • PROVIDING WATER RECIRCULATION & WASTEWATER TREATMENT TECHNOLOGIES • • SERVING THE LAND-BASED AQUACULTURE & FISH PROCESSING INDUSTRIES •

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