Bioengineering’s BIG-G10-1000 treatment plants comprise a single tank (unitank). Within the tank there are three treatment stages: biological treatment (biozone- nitrification and denitrification) and humus settlement.

Working procedure of BIG-G

The flow from inlet to outlet is by gravity. The incoming wastewater is received in the denitrification zone. Flow from the primary zone passes forward into the nitrification zone. The biozone contains a number of sections (depending on the plant size and required discharge consent. The high surface area of the media encourages the growth of the previously selected microorganisms (biomass) which treat the wastewater.

Air, by means of above ground blower(s), is introduced below the media. The air fulfils two functions: supplying the oxygen required by the biomass; scouring the media, removing excess biomass. The combination of treated wastewater and excess humus solids is transferred forward into the humus settlement zone. In this zone the humus solids settle to the bottom of the tank with the treated water (final effluent) being discharged at the top.

The humus solids (humus sludge) which settle to the bottom of the tank are transferred to the denitrification zone by means of an airlift pump, and the surplus sludge is ultimately removed by the dislodging operation.

Awards:

1. Gold medal for ecology and science at the 57th IENA Nuremberg “Ideas-Inventions-Products”, Germany, the world’s leading exhibition for inventors, 8-12.11.2005 in competition with 30 countries and 680 patents and inventions.
   
2. Gold placket from the Ministry of science and education from the Russian federation IENA Nuremberg “Ideas-Inventions-Products” 8-12.11.2005 year.
   
3. Patent of the year 2005 in Republic of Macedonia 5.12.2005 year, Skopje.