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Industrial Process Engineer Presentation
 

Industrial Process Engineer Presentation

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    Industrial Process Engineer Presentation Industrial Process Engineer Presentation Presentation Transcript

    • Wastewater treatment solutions Presentation to Perilex Ltd 28 th April 2010
    • Definition of the project
      • Treatment of effluent from Perilex production facility to enable discharge to the environment.
      • Main requirements:
      • Compliance with Environment Agency provisional consent
        • BOD 10mg/L
        • COD 125mg/L (UWWTD Requirement)
        • Suspended Solids 20mg/L
        • Ammonia 5mg/L
      • Feasible in terms of initial capital and ongoing operational costs
    • Effluent to be treated
      • Discharge volume from Perilex facility is 1500m 3 /day
      • High COD Load
      • High Fat Load
      • Low Ammonia load
      • Query nutrient availability
      • Query treatability
      1 Ammonia 8500 COD 3000 FOG 250 Suspended Solids 3400 BOD Concentration (mg/L) Parameter FOG Suspended Solids Ammonia BOD COD Parameter 4500 375 1.5 5100 12750 Load (kg/day)
    • Treatment options
      • Preliminary treatment only followed by discharge to sewer
      • Anaerobic Treatment
      • Aerobic Treatment
    • Discharge to Sewer
      • Treat to a preliminary standard under UWWTD requirements and then discharge to sewer
      • Discharge cost without treatment £9000/day
      • Discharge cost with primary secondary stage £1200/day
      • 25 year amortised cost of a two stage process £725/day
    • Anaerobic Treatment
      • Advantages
      • Produces Biogas
      • Minimises sludge production
      • UASB System is
      • High rate system
      • Low Footprint
    • Anaerobic Treatment
    • Anaerobic Treatment
      • Advantages
      • Produces Biogas
      • Minimises sludge production
      • UASB System is
      • High rate system
      • Low Footprint
      • Disadvantages
      • Treatment at elevated temperatures
      • Requires secondary treatment stage
      • Without CHP Biogas can’t be utilised fully
      • Unable to treat FOG and not compatible with a DAF stage that treats FOG
    • Aerobic Treatment
      • Advantages
      • Can cope with FOG with a primary DAF stage
      • Complete solution although 2 stage
      • Capable of very good effluent quality
      • Easy to operate and control
      • Adaptable
      • Disadvantages
      • Energy intensive
      • Large sludge production
    • Treatment solution
      • Primary treatment using Dissolved Air Flotation for FOG and COD Removal
      • Two stage activated sludge biological treatment
      • Treatment of waste sludges using anaerobic digestion
      • Dewatering onsite and disposal of waste sludges, potential to produce an enhanced treated product
    • Treatment solution
    • Treatment Solution General Arrangement
    • Operational Expenditure
      • Estimate weekly cost for
      • Power £700
      • Sludge treatment £420
      • Sludge disposal £300
      • Maintenance costs £280
      • Staff costs £560
      • Annual Cost £117,500
    • Further work
      • Further work to examine the effluent nature
        • Biodegradability
        • Nutrient availability
      • Agree and finalise the treatment option
      • Finalise operational and capital expenditure
      • Examination of the costs benefits
      • Potential to look into sewer disposal
      • Examination at the NPC
      • Examination of the sludge disposal strategy
      • Any Questions ??