French legislation requires the control of private on-site sanitation systems by local authorities. This will result in a large increase of the quantity of sludge from septic tanks to be treated. Nevertheless, large wastewater treatment plants are not systematically able to treat this sludge because they may have reached their nominal load or they ...
Troesch, S.Liénard, A.Molle, P.Merlin, GerardEsser, D.
French legislation requires, the control of private on-site sanitation systems by local authorities. This will result in a large increase of the quantity of sludge from septic tanks to be treated. Nevertheless, large wastewater treatment plants are not systematically able to treat this sludge because they may have reached their nominal load or they...
In terms of the 'Kreislaufwirtschaftsgesetz' accruing sludge of WWTP has to be minimized. Furthermore should the utilisation of matter and energy be preferred opposite to disposal. In the framework of this project the use of sludge for energy production at small and medium sized WWTP's has been investigated and the reduction of green house gas emis...
For further improvement of PET-market two items are essential: Development of high-barrier materials (e.g. for sensitive applications like beer-bottles) and technological improvement of PET-recycling. Because of the insufficient elimination of contaminants there was no high-value creation for the mixed and contaminated PET-fraction from post-consum...
The selective elimination of traces of heavy metals from raw waters of the drinking water supply by means of commercially available weakly basic anion exchangers has been investigated. Target species were heavy metal cations (of Hg, Cd, Zn, Ni, Cu, Pb) and chromate (Cr(VI)) anions. In the laboratory investigations, suitable anion exchangers were in...
