Wastewater Treatment

 

In order to meet the challenges of environmentally sound wastewater disposal, The Enviro Group is prepared to undertake the following activities:

• Compare advantages of gravity collection versus pressure sewer system. Design economically optimized sewer collection system
• Assess the relative merits of on-site versus off-site treatment. Consider point of discharge impacts, regulatory limitations, and overall costs
• Select and design pre-treatment alternatives:
  • Screening
  • Grit removal
  • Sedimentation
  • Pre-aeration
  • Scum removal
• Evaluate biological treatment alternatives, such as:
  • Activated sludge
  • Rotating biological surface
  • Oxidation ditch
  • Trickling filter
  • Batch reactor
• Design the selected biological system, including:
  • Sizing of tanks
  • Aeration system
  • Pumping systems
  • Clarification
• Design the selected biological system, including:
  • Sizing of the tanks
  • Aeration system
  • Pumping systems and the
  • Clarification
• Utilize physical-chemical processes to enhance biological system performance:
  • Neutralization
  • Nutrient addition
  • Metal precipitation
  • Additional clarification
• Determine the need for tertiary treatment and design appropriate components including:
  • Polishing filters
  • Nutrient removing biological systems
  • Post-aeration
• Evaluate chlorination/dechlorination versus ozonation to destroy any residual bacterial/viral biomass prior to wastewater discharge. Ensure that adequate exposure/contact occurs for complete kill-off
• Dispose of precipitated and biological solids, considering the available disposal alternatives and the appropriate treatment, such as:
  • Thickening
  • Filtration
  • Aerobic or anaerobic digestion
  • Drying beds
  • Incineration
• Evaluate each alternative on basis of cost effectiveness and long-term environmental impact

Back to Services