August

AT75 – AT5000

• Biological wastewater treatment plants
• Pumps
• Blowers

• AT6 – AT50
• AT75 – AT5000
• Assembling of the WWTP
• Service

The company obtained the National Technical Approval NTL-01-050:2008 „Wastewater treatment plants. Factory and (or) on-site domestic wastewater treatment plants over 50 GE“, which is mandatory for the supply of typical plants to the market from the Certification Centre of Building Products (SPSC) on 27th August 2008.
The mentioned Approval specifies that AT type (AT-75, AT-100, AT-120, AT-150, AT-200, AT-250) wastewater treatment plants (biological reactors) have been designed in accordance with the design rules laid down in the legislative acts.

AT biological reactors (hereinafter – bioreactors) are on-site aerobic continuous-flow wastewater treatment plants factory produced from extrusive polypropylene with active sludge for biological removal of organic pollutants (BDS and ChDS), nitrogen and phosphorus from household and industrial wastewater, which chemical compositions are similar.

A bioreactor consists of anaerobic – anoxic, aeration zone and secondary sedimentation tank.
All zones are installed in a single horizontal repository of cylindrical shape and are separated by walls. By means of the airblower the excess sludge is removed into sludge stabilizer, which is mounted in a separate repository.
The treatment unit includes an air blower mounted next to the plant.
The shape, configuration, arrangement of treatment stages and equipment of bioreactors installed are analogous to all AT75 – AT250 models. Along with the increase in the capacity of bioreactors, the corresponding structural parameters of the equipment are increased.

Municipal VFL wastewater treatment plant AT300 – AT5000 is capable of servicing cities, towns with a large and small number of citizens: from several hundreds up to over five thousand citizens. Our project covers all levels of biological treatment and sludge sedimentation in the integrated reactor. It reduces the dimensions of the plant and simplifies construction works. The tankages of AT1000 – AT5000 bioreactors must be produced from reinforced concrete, whereas partitions can be installed from polypropylene.

VFL technology bioreactor contains integrated all levels of biological treatment and sludge sedimentation (anaerobic – anoxic, aeration zone and secondary sedimentation tank). All zones are installed in the aerotanks of rectangular shape, which base is made from concrete and partitions – from polypropylene.

LAs compared to the traditional treatment methods, VFL technology is superior to both space and energy efficiency. Treatment system is flexible as the duration of all treatment stages can be easily changed and adjusted. The treatment plants of this type are fitted for treatment of unequal and varying wastewater debits and loads.