| Model | Size(mm) | Specific Surface Area(m 2 /m 3 ) | bio-film formation duration (days) | nitrification efficiency | preferential temperature | Services life(years) | Number of unites per m 3 |
| PE01 | Φ12*10 | >800 | 5-15 | 650 | <65 | ≥10 | 840,000 |
| PE02 | Φ11*10 | >900 | 5-15 | 750 | <65 | ≥10 | 1160,000 |
| PE03 | Φ10*10 | >1000 | 5-15 | 850 | <65 | ≥10 | 1260,000 |
| PE04 | Φ14.5*10 | >800 | 5-15 | 650 | <65 | ≥10 | 450,000 |
| PE05 | Φ25*10 | >500 | 5-15 | 400 | <65 | ≥10 | 140,000 |