HDPE moving-bed biofilm media in K1–K5 types for biological wastewater treatment — Φ10–25mm, high protected surface area (>800–1000 m²/m³), high porosity (>85–90%) and fast biofilm formation, for efficient nitrification and organic removal.
The open moving-bed carrier keeps a large protected surface for biofilm, so biological treatment stays active and stable while the media circulate in the reactor.
Open-carrier K1–K5 design gives a large protected surface for biofilm while protecting it from wear.
With 3–15 day film formation, nitrification 400–1200 gN/m³·d and BOD/COD oxidation 2000–15000 g/m³·d, the media reduce footprint and increase capacity.
HDPE resists wear and chemical attack; long service life >15 years and a suggested dosing rate of 15–67%.
MBBR media are an active biological suspended carrier. A scientific recipe blends trace elements that favour rapid microbial attachment into the polymer matrix, modified by a special process — giving large specific surface area, good hydrophilicity, good mobility, high biological activity, easy film formation and a long service life.
Engineering advantages: efficient carbon removal and superior nitrogen removal. The carrier gives a safe environment for dominant bacteria and a longer sludge age, raising nitrifier concentration, while the high biological concentration damps inlet fluctuations and improves impact-load resistance. In a comparative trial treating septic-tank water (inlet COD 150–200 mg/L, NH₃-N 100–130 mg/L) with the same effective tank volume and no sludge return, two suspended-carrier systems dosed at 40% outperformed an activated-sludge process and also fixed-bed (D25 honeycomb), contact-oxidation (p150 combined) and moving-bed (q25 multi-faceted hollow ball) carriers dosed at 70% — showing higher carbon and nitrogen removal at a lower dosing rate. The biofilm process needs only adding media dosing to the existing tank — no new tank, saving significantly on footprint.
K1–K5 type specifications. Suggested dosing rate 15–67%; film formation 3–15 days; operating temperature 5–60 ℃; service life >15 years.
| Model | Size / mm | Holes | Surface area m²/m³ | Density g/cm³ | Pieces / m³ | Porosity % | Nitrification | BOD oxidation (g/m³·d) | COD oxidation (g/m³·d) | Pieces / kg | kg / L |
|---|---|---|---|---|---|---|---|---|---|---|---|
| K1 | Φ10×10 | 4–5 | >800 | 0.96 | >850,000 | >85 | 400–1200 | 2000–10000 | 2000–15000 | 2000 | 0.15 |
| K2 | Φ15×10 | 6 | >800 | 0.96 | >830,000 | >85 | 400–1200 | 2000–10000 | 2000–15000 | 1100 | 0.13 |
| K3 | Φ25×10 | 19 | >900 | 0.96 | >76,000 | >90 | 400–1200 | 2000–10000 | 2000–15000 | 520 | 0.10 |
| K4 | Φ25×10 | 37 | >1000 | 0.96 | >76,000 | >90 | 400–1200 | 2000–10000 | 2000–15000 | 320 | 0.09 |
| K5 | Φ25×5 | 64 | >1000 | 0.96 | >79,000 | >90 | 400–1200 | 2000–10000 | 2000–15000 | 500 | 0.10 |
| Material | Suggested dosing rate | Film formation | Operating temp. | Service life | Unit | Packing weight |
|---|---|---|---|---|---|---|
| HDPE | 15 – 67% | 3 – 15 days | 5 – 60 ℃ | >15 years | m³ | ~125 kg/m³ (K5) |
PE series — detailed album specifications.
| Model | Size / mm | Density g/cm³ | Dosing % | Nitrification gN/m³·d | Surface area m²/m³ | Pieces / m³ | Life | Material |
|---|---|---|---|---|---|---|---|---|
| PE01 | Φ12×9 | 0.94–0.97 | 15–70 | 400–1200 | >800 | >830,000 | >15 yrs | HDPE |
| PE02 | Φ11×7 | 0.94–0.97 | 15–75 | 400–1200 | >900 | >830,000 | >15 yrs | HDPE |
| PE03 | Φ10×7 | 0.94–0.97 | 15–70 | 400–1200 | >1000 | >900,000 | >15 yrs | HDPE |
| PE04 | Φ16×10 | 0.94–0.97 | 15–67 | 400–1200 | >800 | >520,000 | >15 yrs | HDPE |
| PE05 | Φ25×10 | 0.94–0.97 | 15–65 | 400–1200 | >800 | >118,000 | >15 yrs | HDPE |
| PE06 | Φ25×10 | 0.94–0.97 | 15–65 | 400–1200 | >600 | >118,000 | >15 yrs | HDPE |
| PE08 | Φ25×10 | 0.94–0.97 | 15–70 | 500–1400 | >1300 | >184,000 | >15 yrs | HDPE |
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