Anaerobic Technology
Optimize your wastewater treatment with anaerobic technology applied to the treatment of
sewage.
Optimize your wastewater treatment with advanced anaerobic technology
Backed by our experience in water management in industry, we believe in the potential of anaerobic technology applied to wastewater treatment.
This approach allows for the valorization of organic matter present in water through the use of anaerobic biological reactors, achieving the maximum efficiency and sustainability in industrial water management.
Anaerobic reactor and biogas to make the investment profitable
The efficiency and sustainability of the anaerobic reactor does not end with reducing the amount of sludge generated and decreasing the need for electrical energy for its use.
During its operation, the anaerobic reactor generates biogas, a component that can be used as fuel to generate electrical or heat energy to supply the process itself.
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Reasons to opt for an anaerobic reactor
Anaerobic technology has favorable characteristics compared to conventional aerobic processes applied to wastewater:
Reduce energy costs (up to -70%)
Since it does not require aeration energy, electricity usage is greatly reduced, lowering operating costs.
Reduce CO2 emissions
Generating and using biogas as an energy source, thanks to anaerobic technology, instead of fossil fuels, prevents the release of large quantities of CO2 into the atmosphere. Furthermore, its collection as an energy raw material derived from the decomposition of organic waste prevents the uncontrolled release of greenhouse gases that would occur if it were disposed of in landfills.
It promotes the generation of biogas
The anaerobic reactor generates biogas that can be used as an energy source due to its high percentage of methane.
Minimizes waste generation (-75%)
In an anaerobic biological treatment, bacteria generate a smaller amount of sludge during COD degradation, which also translates into cost savings in the operation by having a smaller amount of sludge to manage.
We work with the best technologies on the market
We offer you the three anaerobic treatment technologies currently available on the market.
UASB
The UASB (upflow anaerobic sludge blanket) reactor occupies the most space, standing only 8 meters tall, and is capable of treating 15 kg COD/m³/day. The process takes place in a single tank where water enters from the bottom and then flows upwards, passing through a suspended mat of bacteria that treats the wastewater.
EGSB
The EGSB anaerobic reactor (expanded granular sludge bed anaerobic reactor) belongs to the group of high-performance biogas plants. It has a greater height (10 meters) and requires a smaller footprint. It is capable of removing a greater amount of COD thanks to its external recirculation, the combined use of anaerobic sludge granules, and high water flow rates (up to 25 kg COD/m³/day).
IR
The IR anaerobic reactor uses an internal recirculation system to create a flow through the sludge bed. It can be more efficient than the EGSB reactor, especially with wastewater of high concentration and salinity, and is more compact (smaller footprint). It is an ideal piece of equipment for plants with limited space for implementing anaerobic technology. It can treat flow rates with an organic load of up to 35 kg COD/m³/day.
Experts in the sector
SITRA, as an expert in the complete water cycle, has supported this technology since its market launch. Our commitment to always offering the best solutions to our clients has allowed us to achieve numerous successful projects based on anaerobic reactor technology.
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Frequently asked questions about anaerobic reactors
When is an anaerobic reactor necessary?
The anaerobic reactor is highly useful when working with high flow rates and high COD loads; it is the best technological solution. It allows for the reuse of the waste generated within it—biogas and sludge—resulting in water with a significant reduction in COD levels.
How does temperature affect the performance of an anaerobic biological reactor?
In the anaerobic reactor, as its name indicates, a reaction is generated. This reaction occurs within certain temperature ranges; therefore, it is necessary to control this property to ensure that the reactor functions optimally and reduces the COD present in the inlet stream as much as possible.
What type of reactors are expanded granular sludge bed reactors?
Expanded granular sludge bed reactors (EGSBs) are characterized by their small footprint due to their height, which allows them to treat fluids with a high COD load (25 kg COD/m³/day). These reactors optimize COD flow by ensuring thorough mixing and recirculation of the feed. They feature a moderate and adjustable upflow velocity to accommodate fluctuations in the flow rate. Multiple influent lines allow for individual adjustments. A three-stage separator enables efficient process management, even with high flow rates. This separator collects biogas at the ceiling for subsequent treatment, preventing its escape and thus eliminating odors.
What is the internal recirculation reactor?
Internal recirculation reactors are IR or IC reactors. This type of equipment occupies a small surface area, saving space, but without compromising its efficiency (it is capable of treating flow rates of more than 35 kg COD/m3/day).
Its effectiveness is increased by various features of the equipment: internal and external recirculation that allows it to optimally dilute the influent and reduce its organic load, an optimized feed distribution system, as well as sludge discharge points to avoid saturation.
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