With the development of the ultra high rate HydroThane STP^® ECSB ("Easy as Be" - External Circulation Sludge Bed) process, 2nd generation EGSB, HydroThane has created the opportunity for customers to treat their effluent within limited available space and close to urban areas.

The HydroThane STP^® ECSB design has eliminated noise and odor related issues that were present in other older anaerobic processes.

Characteristics of the HydroThane STP^® ECSB are:
- Due to the complete overpressure design of the ECSB process,
   a (bio)gas holder is not required
- No need to install any bio/compost filter or other, because all
   odors or smells are fully integrated into the pressurized and
   closed biogas circuit
- The over- pressurized design prevents air
   oxygen entrance - corrosion is therefore not possible
- No complex internals or rotating equipment inside the reactor
   (no maintenance at all necessary in the reactor)
- Two layers separation design creates maximal process stability
   and capacity
- Fully controlled hydraulic mixing by means of external circulation
- Loading rates of the ECSB reactor are typically in the range of
   15 - 35 kg COD/m³.day.