Global Water & Energy (GWE) - a member of Global Water Engineering Group of Companies - Ovivo Inc

Anaerobic Treatment

Wastewaters from the food and beverages industry, pulp and paper mills and from the chemical industry are highly loaded with organic pollutants and can be treated advantageously by means of anaerobic processes. Varying wastewater components and the wide range of possible COD concentrations however require the use of different anaerobic reactor types, each adapted to the specific situation.

The present range of reactors offered by Global Water and Energy comprises the following types:  The ANUBIX family of reactors are an upflow sludge bed systems, used e.g. for wastewaters from breweries, beverage industry, sugar mills, starch factories, paper mills, etc. Volumetric loading rates up to 25 kg COD/m3.d are used. Available in 3 variations: ANUBIX-C (low rate, flocculent sludge), ANUBIX-B (high rate, flocculent / granular), ANUBIX-T (ultra-high rate, granular sludge). The low rate system (C) is used for medium to high strength waste-water with or without solids and moderate amounts of FOG. The high rate system (B) is used for low to medium strength wastewaters, low in solids and FOG, promoting good sludge growth in an Upflow Anaerobic Sludge Blanket (UASB). The ultra high rate system (T) is used for medium strength wastewater with easily degradable organic matters, promoting excellent sludge growth in an Expanded Granular Sludge Bed (EGSB).

The ANAFIX reactor, an anaerobic filter system with floating biomass carrier material, e.g. for wastewaters from the fermentation industry, the chemical industry, some dairies, where suboptimal conditions prevail.

The FLOTAMET system, consisting of a mixed FLOTAMET digester, followed by a Dissolved Biogas Flotation (DBF) system for sludge separation by flotation. Used for wastewaters rich in FOG, salts and/or fibers.

 The ANAMIX reactor, a mixed long residence time digester for very high strength or solids wastewaters and slurries. Mesophilic or thermophilic (ANAMIX-M/T) systems are available.

The RAPTOR process for Rapid Transformation of Organic Residues is a powerful liquid state anaerobic digestion process that converts almost any organic residue (waste) or energy crop (called “substrate”) into biogas, valuable electricity or heat by means of a pretreatment enhanced multi-step biological fermentation process.

The THEAREX process is a powerful dry-digestion anaerobic process designed to convert nearly any organic residue or energy crop into biogas, valuable electricity, or heat using GWE's ANADRY dry digestion technology.

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