Food and Beverage Water & Wastewater Treatment

Improving Product Quality/Reducing Plant Operational Cost

Whether is it Biological Oxygen Demand (BOD) surcharges or paying high waste hauling costs, Sciential looks for ways to accomplish both water recovery and waste minimization.  Sciential has the expertise to simulate multiple unit processes at the bench-scale level, minimizing costly upfront pilot testing.  Whether it is reducing BOD or simply concentrating high liquid streams for waste disposal such that the water can be reused while concentrating the solids for disposal.

 

Treatment Drivers

  • Biological Oxygen Demand (BOD)
  • Total Suspended Solids (TSS)
  • Total Dissolved Solids (TDS)
  • Fats, Oils, Greases (FOG)
  • Potential Water Reuse
  • Potential Heavy Metals
  • Detergents, cleaners, etc.
  • Nutrient Removal

 

Food Processing Wastewater

Large amount of wastewater is generated in food production.  Effluent characteristics and constituents vary widely and require different processing technologies to achieve the required discharge limits. Discharge limits vary further by state and local regulations.

 

Fats, Oils, Greases (FOG)

Some plants produce high amounts of fats, oil and grease (FOG). A dissolved air flotation (DAF) unit is an effective means of reducing the FOG and solids levels. DAFs are especially effective for food solids since most food particles float. Floating FOG and solids are skimmed from the DAF unit and recovered for disposal or sale. Skimmed solids do not require thickening.

Total suspended solids (TSS), FOG, and biological oxygen demand (BOD) are all significantly reduced by screening and DAF treatment. Nevertheless, there may still be levels of these contaminants which will require further treatment prior to discharge. Contaminant type and level determine treatment options.  Waste stream volume, reuse possibilities, and available space will also influence the choice of treatment designs.

Almost all food processing facilities will require biological treatment for BOD removal. If the stream is small or BOD is low, the plant may elect to send the screened waste to a municipal treatment plant. Some wastewater will contain very high BOD (dairy, cheese, etc.) and anaerobic as well as aerobic systems will be necessary.