ANAEROBIC
DESCRIPTION
Fidia Engineering provides turnkey plants for anaerobic waste water treatment from industrial activities (food and dairy, beverage, agriculture, pharmaceutical), with biogas production (boiler’s energy recovery, with hot water and steam production) and electricity generation. This competence is supported by a recent agreement with the International Company "GWE - Global Water Engineering Ltd." (www.globalwaterengineering.com), specialized in the "anaerobic technologies" field.
The collaboration with GWE usually includes the acquisition of basic engineering, process guarantees, some key equipment, commissioning and start-up. Fidia Engineering integrates GWE services with detailed engineering package, procurement of all equipment, installation and start-up. This collaboration allows our customers from Italian, Portuguese and Romanian market, to have a product which is widely reliable and referenced, but integrated with Italian products and managed by a highly professional partner specialized in waste water treatment, which often integrates the GWE’s systems with traditional wastewater treatment plants. This usually results in a reduction of the investment’s costs and the interface with an interlocutor present on the territory, always present even as a reference point for plant management.
Thanks to FIDIA Engineering, GWE uses its 30 years of experience in the construction of more than 300 plants in the research for new customers all over the world.
GWE offers reliable, functional and modern technology at state of the art. GWE is very proud to record 100% in satisfaction of process guarantees.
GWE’s anaerobic wastewater treatment technologies use bacteria to digest the organic substance (Chemical Oxygen Demand or COD) in the wastewater. The technology is called anaerobic because these bacteria don’t require oxygen.
Through anaerobic digestion, GWE technologies can remove up to 98% of organic pollution (COD) from the wastewater, making it suitable to be discharged in superficial waters. If necessary and for specific applications, the remaining pollution can be further treated with complementary systems of aerobic treatment proposed by Fidia Engineering.
TYPE OF REACTORS
GWE is proprietary of seven types of anaerobic reactor, that offer a truly unique range, each specifically designed for dedicated organic loads.
The main anaerobic reactor family, the ANUBIX™-series, is based on the Up-flow Anaerobic Sludge Blanket (UASB)-technology and is available in 3 different designs:
• ANUBIX™-B: for wastewaters with low to medium load of pollutants, with moderate TSS and no FOG (fat oil and grease);
• ANUBIX™-C: for wastewaters with medium to high load of pollutants, with higher TSS and some FOG;
• ANUBIX™-T: a tower-shaped EGSB (Expanded Granular Sludge Bed) for wastewater with low to medium load of pollutants, with low TSS and with strict space limitations.
When UASB-solutions are not sufficient, such as for salty wastewaters, or water containing lots of fat, oil and grease (FOG) or nasty chemicals, that induce flotation in the UASB-reactor, GWE has designed several additional anaerobic reactor types, offering dedicated solutions for specific problems.
GWE’s FLOTAMET™ or FLOTAtion METhane reactor has additional mechanical mixing incorporated and a separate Dissolved Biogas Flotation (DBF) module. It is highly suitable to treat FOG-rich and salty wastewater as well as wastewater containing a lot of proteins or fibers.
The ANAFIX™, or ANAerobic FIlter reactor contains a plastic biomass carrier material, throughout the reactor creating an optimal condition for treating wastewaters from the chemical industry and containing a low amount of suspended solids.
Another proprietary reactor type is the ANAMIX™, or ANAerobic MIXed digester. Where a good mechanical mixing allows better treatment of concentrated wastewater as well as sludge and slurries with high FOG concentrations.
All the above anaerobic solutions combine the advantages of maximum COD conversion to biogas, combined with low operating costs, low excess sludge production, low space requirements and a good resistance to variable wastewater loads and concentrations.
The COHRAL™ is a basic COvered High Rate Anaerobic Lagoon using high quality UVresistant materials. It is a less process-efficient installation in terms of organic loading rate, but can sometimes offer a solution for less technology-demanding applications that allow a long residence time and where plenty of space is available.