Anaerobic Reactors

BIOTECS anaerobic technology portfolio includes a number of different types of anaerobic reactors which are chosen based on the characteristics of the wastewater and its final use.

The up flow and expanded granular sludge anaerobic reactors include:

BIOTECS AnUp↑-SB, which is an up flow anaerobic reactor with a sludge blanket, normally known as UASB and is the reactor in most common use around the world;
BIOTECS AnUp↑-SB +, is an anaerobic reactor similar to BIOTECS AnUpt-SB, but more typically used for higher concentrations and for more complex liquids;
BIOTHOL, is a tower anaerobic reactor which works on the basis of expanded granular sludge (EGSB) and is designed for higher volumetric organic loads;
BIOTECS AnUp↑-HF, is à hybrid anaerobic reactor with a biological filter and a fixed media.

There are also other types of anaerobic reactors including complete mixed or contact reactors (C-Series), which are characterised by a number of different features including a sludge separator mounted outside of the biological reactor, recirculation of the liquid and sludge, internal stirring mechanisms, with the choice of reactor depending upon the level of efficiency required.

When the wastewater presents difficulties for the sludge granulation, caused by the presence of inorganic salts or toxic ingredients, which are difficult or impossible to degrade, we would typically recommend one of the following anaerobic reactors:

BIOTECS AnUp↑-C-Series;
BIOTECS AnUp↑-CS;
BIOTECS AnUp↑-MBR.

BIOTHOL
(Exclusive BIOTECS Design)

BIOTHOL is an advanced anaerobic reactor designed to treat wastewaters with medium and high organic matter concentration levels, where the formation of anaerobic sludge with good granulation can be successfully achieved.

BIOTHOL represents a class of anaerobic reactors with the profile of a tall vertical tower which requires a good expansion of granulated sludge (EGSB) within its body and which is recommended for high volumetric organic load. Thanks to lts highly innovative design, a BIOTHOL reactor has a reduced footprint compared to the classic anaerobic reactors BIOTECS AnUp↑-SB and is generally recommended for sites where there is limited space for installations.

BIOTECS
AnUp↑-C+DBF

BIOTECS-AnUp↑-C+DBF is a complete mixed anaerobic reactor (C-Series), which is complemented externally by an effective settler and is typically chosen where the composition of the wastewater either hinders or prevents sludge granulation and makes the phase separation difficult (sludge/effluent).

For these reasons, we have developed and successfully introduced an external phase settler combining an advanced flotation system, which uses the biogas from the biological anaerobic process to improve its operating performance.

Known as DBF — "Dissolved Biogas Flotation" or flotation with dissolved biogas, this equipment helps deliver an excellent separation of the liquid (treated wastewater), solid (sludge) and gas (biogas) which together make up the liquid which leaves the biological reactor and heads for this separator.