Circular solutions for :
At the WWTP of Altenrhein (AVA) advanced energy-efficient sludge management technologies for 300.000 PE of sludge are already in place: sludge is dried on site and is co-incinerated in cement works. The heat for sludge drying is generated by burning of sewage gas and by heat recovery from wastewater using heat pumps.
AVA signed a contract to build a nitrogen stripping unit from sludge dewatering employing an innovative membrane contactor with a novel low fouling membrane module.
Key innovations & actions
- Production of fresh activated carbon using locally available sludge and biomass, definition and
regeneration strategies and its reuse for micropollutants removal.
- Phosphorus in sludge modified and purified for reuse as market grade P-K-fertilizer.
- Nitrogen stripping via a novel membrane contactor.