Anaerobic Systems

Anaerobic digestion is a process in which microorganisms convert organic matter into biogas in the absence of oxygen

Anaerobic treatment is typically utilized to treat warm, high-strength industrial wastewater containing high concentrations of biodegradable organic matter. This energy-efficient process reliably removes biochemical oxygen demand (BOD), chemical oxygen demand (COD), and total suspended solids (TSS) from wastewater.

Anaerobic processes use substantially less energy, require less chemicals, and incur lower sludge handling costs compared to aerobic treatment options. In addition, the biogas produced in the anaerobic process is a source of renewable energy that can be used to displace fossil fuels such as oil or natural gas, or to generate electricity.

Renewable Energy from Biogas

As organics are removed from the wastewater during the anaerobic digestion process, methane-rich biogas is produced

Minimal Sludge Production

Anaerobic digestion produces very little excess sludge & with treatment the agriculturally-beneficial sludge can safely be applied to land as fertilizer

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ADI® Anaerobic Membrane Bioreactor (AnMBR)

ADI® Anaerobic Membrane Bioreactor (AnMBR)

The latest innovation in biological wastewater treatment.

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ADI-BVF® reactor

ADI-BVF® reactor

Anaerobic digestion system that offers very stable, robust wastewater treatment and biogas generation under a wide range of operating conditions.

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ADI® CH4 Generating Reactor (CGR)

ADI® CH4 Generating Reactor (CGR)

In-ground, low-rate anaerobic digestion process used predominantly for bioenergy production.

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ADI® External Circulation Sludge Bed (ECSB)

ADI® External Circulation Sludge Bed (ECSB)

High-rate anaerobic digestion system that uses granular biomass to treat wastewater.

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ADI® Hybrid Reactor (Hybrid)

ADI® Hybrid Reactor (Hybrid)

Anaerobic digestion system sized to work at medium volumetric load conditions.

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ADI® AnDGF

ADI® AnDGF

Anaerobic Treatment Process using Dissolved Gas Flotation (DGF) process as pretreatment

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Envirex® Sludge Heater and Boilers

Envirex® Sludge Heater and Boilers

Sludge heaters and biogas boilers for safe, reiable and long-lasting performance

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Tube in Tube Sludge Heat Exchanger

Tube in Tube Sludge Heat Exchanger

Heat exchangers for sludge heating and cooling applications

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JetMix™ Vortex Mixing System

JetMix™ Vortex Mixing System

Hydraulic mixing system for sludge and other tank mixing applications

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ADI® Continuously Stirred Tank Reactor (CSTR)

ADI® Continuously Stirred Tank Reactor (CSTR)

Moderate-rate, complete-mix, anaerobic digestion process

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Advantages of Anaerobic Digestion

Tap into Renewable Energy from Biogas: As organics are removed from the wastewater during the anaerobic digestion process, methane-rich biogas is produced. This valuable biogas can be captured, treated, and used a source of renewable energy to displace fossil fuels or to generate heat or electricity.

Evoqua has extensive experience supplying complete biogas handling, treatment, and utilization systems for the recovery of renewable energy from wastewater and organic waste. We offer biogas technologies to assist with waste-to-energy initiatives to help treatment plants recover money-saving resources.

Minimize Sludge Production: Compared to aerobic treatment systems, anaerobic systems use substantially less energy, require fewer chemicals, and incur lower sludge handling costs. Anaerobic digestion produces very little excess sludge, and with treatmentbut the agriculturally-beneficial sludge can safely be applied to land as fertilizer.