About PVA
PVA Information
1. Physical and Structural Features
Particle Size(Ø) 3-5mm
Density 1.013
Specific Surface Area 4000- 6000m2/m3
Pore Size <10 µm
Composition 10%PVA(生物可分解)、80%水、
菌量6-9%
Operating Temperature < 60°C (depending on microbial strains)
pH 2-11
Particle Size(Ø) 3-5mm
Density 1.013
Specific Surface Area 4000- 6000m2/m3
Pore Size <10 µm
Composition 10% PVA (biodegradable), 80% H₂O, 6-9% Microbial biomass
Operating Temperature < 60°C (depending on microbial strains)
pH 2-11
Best way to store
Soak in culture medium or water; vacuum packaging may also be used.If left exposed to the air, PVA bio-balls will dehydrate and shrink; if left dry for too long, they will not recover.
Best way to store
Soak in culture medium or water; vacuum packaging may also be used.If left exposed to the air, PVA bio-balls will dehydrate and shrink; if left dry for too long, they will not recover.
2. Performance
| Upper Limit | Volume Load | |
| Nitrification | <1000ppm | 0.9 kg NH₄-N/m³· d |
| Denitrification | <1000ppm | 1-6 kg NO₃-N/m³· d |
COD removal(COD removal) | <20,000ppm | 5 kg COD/m³· d |
3. Key Advantages
| About PVA | PE, PP, PU-made MBBR | Activated sludge (AS) | |
| Material | Biodegradable | ||
| Excess Sludge Production | 5-10% of BOD loading | 20-25% of BOD loading 載體長滿污泥後影響比重 |
|
| Start-up Time | ~1-5 days | ~1-3 months | ~1-3 months |
| Operating Range | pH 2-10 E.C.<35 mS Salinity < 3.5% |
pH 5-9 E.C.<8 mS |
pH 6-9 E.C.<8 mS |
| Maintenance | ‧ Clean bead surface ‧ No bulking risk Pumpable 可使用泵輸送 無膨化問題，操作彈性大 |
‧ Prone to clogging Fragile 表面卡滿污泥後比重變重 不易攪拌、更換困難 |
‧ Risk of bulking 有膨化問題 ‧ Require strict control |
4. Product Usage
Aerobic Reactors | Anoxic Reactors | Anaerobic Reactors
5. Packing Method
Media volume should be calculated based on full submergence of PVA bio-carriers
6. Method of delivery
1. Open Impeller Submersible Pump
Maximum Flow Rate: 100 L/min
2. 氣動泵
VERDER VA50 Air Operated Double Diaphragm Pump / Maximum Flow Rate: 568 L/min
Height can reach 3 meters
載體
系統
Trickling Filter
Packed Bed
Biofilm Cariers 80 m2/m3
RBC
Packed Bed
Packed Bed
Plastic plate 200 m²/m³
塑料微孔懸浮載體
Moving / Packed Bed
Porous plastics 375 m²/m³
PU載體
Moving Bed
Sponge/ Microporous gel
1000 m²/m³
PVA球(純載體，無菌)
Moving Bed
PVA Gel
4000-6000 m²/m³
PVA生物球(內含菌)
Moving Bed
Gel immobilization
4000-6000 m²/m³
CN Patent Office
ZA Patent Office
Biofilm Cariers 80 m2/m3
JP Patent Office
UK Patent Certificate
UK Divisional Patent Application
TW Patent Office
TW Patent Office 2
