PVA Gel Bioreactor

Characteristics

1. Excellent fluidity in water requiring minimal energy for mixing.
2. PVA gel has a network of minute pores about 20 microns in diameter tunneling throughout each bead.
Effective bacteria can be enriched in large numbers in the protective core of the beads,
thus greatly reducing sloughing of biomass.
While maintaining stable treatment efficiencies. Good oxygen permeability can support a high loading.
Therefore even with a low filling ratio PVA gel has high treatment power.
【Load】
Up to 50 kg・BOD/㎥・gel・d (BOD Removal)
6 kg・N/㎥・gel・d (Nitrogen Removal)
3. Treatment with PVA gel yields less excess sludge as compared to conventional biological methods.
4. PVA gel has a very high water content due to its extensive porosity, thus allowing for favorable permeability of oxygen and nutrients to the bacteria colonized inside the beads.
5. Polymerized PVA gel is essentially insoluble in water and is not known to be biodegradable.
6. Depending on the characteristics of the wastewater, treatment ability using PVA gel can be enhanced up to 5 times over that of conventional activated sludge, thus allowing for upgrading of existing overloaded systems or for design of new process units with greatly reduced foot prints.