Tubedek Media

Advantages of PVA-gel beads

Easy retrofit (water quantity, loading up) - Add a PVA-gel tank to an AS one or retrofit an existing treatment (AS) tank to PVA-gel one

Small footprint - Reduce tank volume due to high load designing

Low running cost - Reduce the cost of excess sludge disposal Reduce the cost of low - biodegradable substances disposal because of itsbiode gradation Reduce energy from dewatering anddrying

Increased capacity upto 5 times

Features of PVA-gel beads

Stable immobilization of bacteria → High load operation

High load operation

Standard 25 kg BOD/m3 gel･d (2.5 kg BOD/ m3 tank volume･d)

Nitrification, Denitrification (Nitrate treatment)

Standard 3kg N/m3gel･d(0.3kgN/m3 tank volume･d)

Anaerobic (Methanefermentation)

Standard 3 kg N/m3 gel･d (0.3 kg N/m3 tank volume･d)

Bacteria rich flora → Lower excess sludge

Aerobic treatment

Aerobic treatment: 30% or less of removed BOD

Autolysis treatment

Autolysis treatment: 5 to 10% of removed BOD

*It differs according to water qualities.

High biodegradability of organic substances

Treatment of low degradable substances– Oil and grease, PVA and so on