Two-Phase Activated Sludge System
It can simultaneously increase processing capacity and reduce sludge.
Two-Phase Activated Sludge System
It can be achieved by modifying only a part of the existing aeration tank, and does not require installation of a new water tank.
Operation management is easy without addition of new utilities, etc.
System overview
- Processing capacity can be increased with simple modification of the existing aeration tank
Fast decomposition of organic matter by dispersed bacteria. Significant increase in processing capacity (results of 30% or more). - Sludge amount can be reduced
Sludge reduction results in actual machines: 60 to 80% - Less susceptible to bulking
- Resistant to load fluctuations
Dispersed bacteria proliferate rapidly (at least 10 times that of activated sludge) and can follow the load fluctuations.
Dispersed bacteria retaining material
Two-phase carrier method
System introduction flow
Conventional
This system
Introduction case example
Industry type: Wastewater from manufacturing plant for seasoning, etc.
| Existing | After modification | |
|---|---|---|
| Water treatment quantity | 640m3/d | 720m3/d (maximum of 840m3/d) |
| BOD concentration in raw water | 1500mg/L | 1500mg/L |
| BOD concentration in treated water | 25mg/L or less | 25mg/L or less |
| Sludge SVI | 200 or higher | Around 40 |
| Sludge generation rate (organic) | 100％ | 20～40% (Achieve reduction by 60 to 80%) |
Example improvement achieved by system introduction
