Wastewater pretreatment for processed food producer

  • Year: 2013
  • Project location: Fraga, Spain
  • Objectives: Effluent of sufficient quality to comply with legal discharge limits. Possibility of accommodating an increase in flow in a future expansion of the production plant. Optimization of operation and maintenance costs. Minimal impact on the environment.
  • Equipment installed: SIGMA DAF system for the separation of total suspended solids and other contaminants associated with solids.
  • Capacity: 300 m3/day

Scenario

SIGMA designs and builds the pre-treatment in the wastewater plant for Angel Bosch S.A. The company manufactures meat products, pre-cooked meals and ready-to-eat meals. It is located in Fraga, Spain.

The pre-treatment consists of:

  • Coarse solids separator and fine screen.
  • Homogenization tanks with aeration.
  • Physical-chemical process of coagulation-flocculation and pH adjustment.
  • SIGMA DAF system for the separation of total suspended solids and other contaminants associated with solids.
  • Sludge processing.

Wastewater characteristics

ParametersYou.Value
COD mg/L 3500
DBO5 mg/L 2300
SST mg/L 1000
Oils and fats mg/L 300

Performance

ParametersElimination efficiency
COD 77%
DBO5 83%
SST 83%
Oils and fats 87%

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