Wastewater pretreatment for processed food producer
Project location: Fraga, Spain
Objectives: Effluent of sufficient quality to comply with legal discharge limits. Possibility of accommodating a flow increase in a future expansion of the production plant. Optimization of operation and maintenance costs. Minimal impact on the environment.
Capacity: 300 m3/day
Scenario
SIGMADAF designs and builds the pretreatment in the wastewater plant for Angel Bosch S.A. The company manufactures meat products, ready-to-eat meals and ready-to-eat meals. It is located in Fraga, Spain.
Pretreatment 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
| Parameters | You. | Value |
|---|---|---|
| COD | mg/L | 3500 |
| DBO5 | mg/L | 2300 |
| SST | mg/L | 1000 |
| Oils and fats | mg/L | 300 |
Performance
| Parameters | Elimination efficiency |
|---|---|
| COD | 77% |
| DBO5 | 83% |
| SST | 83% |
| Oils and fats | 87% |
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