Biological WWTPs – VFL-system (Vertical Flow Labyrinth)
- a patented system VFL for new and reconstructed biological WWTPs based on the activated sludge process is used (European patent EP 1919833)
- VFL-system is characterized by lower operating costs, because pumping is not made by motoric pumps but by mammoth pumps instead (30-50 % energy saving)
- VFL-system is characterized by the increased proportion of anoxic zones, which also leads to a better removal of macronutrients N and P (while saving energy for aeration)
- another advantage of the VFL system is a significantly lower production of excess sludge (predominantly stabilized), which brings additional savings in operating costs for sludge management
- smaller WWTPs are made of polypropylene (from home ones to hundreds of PEs), larger ones have concrete tanks with plastic constructions that form a system of oxic and anoxic zones with a vertical flow of water and a sludge-air mixture
- the project starts with hydro-technical calculations and elaboration of the project documentation, and it ends with handing over a complete WWTP, warranty service, and professional supervision
2 pcs of AT250
3 reactors of 2nd rate
AT100 oval
AT175
detail of air distribution
domestic WWTP AT6
domestic WWTP AT8
2 nd rate of bioWWTP
installation of an activated sludge tank equipment
exposed AT250
activated sludge recirculation
reconstructed activated sludge tank (1st rate)
air distribution
zone of VFL-systems