Case study Merck, Sharp&Dohme, Puerto Rico, USA
Wastewater treatment plant for effluent from pharmaceutical industry.
Design data
| Parameter |
Value |
| COD (average) |
2 727 kg/d |
| COD (maximum) |
8 182 kg/d |
| TKN |
100 mg/l |
| Design flow |
2 182 m³/d |
| Maximum flow |
3 273 m³/d |
Effluent requirements
| Parameter |
Value |
| Toluene |
<0.2 mg/l |
| Tetrahydrofuran |
<3.4 mg/l |
| Acetone |
<8.2 mg/l |
Results
| Parameter |
Influent (mg/l) |
Effluent (mg/l) |
Reduction (%) |
| COD (average) |
2 140 |
241.4 |
89 |
| BOD7 (average) |
1 196 |
61,0 |
95 |
The facility continously meets effluent limitations even under peak organic loading.
