Table 2.
Characteristic of 4 constructed pilot systems for waste water treatment
| Parameter | Site 1 | Site 2 | Site 3 | Control |
|---|---|---|---|---|
| wastewater |
Domestic + Septic Tank |
Domestic + Septic Tank |
Domestic + Septic Tank |
Domestic + Septic Tank |
| Bed dimensions (m) |
5 × 4.5 × 0.7 |
5 × 4.5 × 0.7 |
5 × 4.5 × 0.7 |
5 × 4.5 × 0.7 |
| Bed surface area (m2) |
22.5 |
22.5 |
22.5 |
22.5 |
| Type of flow |
horizontal |
horizontal |
horizontal |
horizontal |
| Hydraulic loading (m3/(m2 h) |
0.04 |
0.04 |
0.04 |
0.04 |
| Flow rate m3/h |
20 |
20 |
20 |
20 |
| Hydraulic retention time (d) |
3-5 |
3-5 |
3-5 |
3-5 |
| Type of reed | Phragmites | Phalaris | Glyceria | No plant |