Leading the biotech revolution
in wastewater and biogas

High-rate anaerobic digestion for wastewater treatment

High-rate anaerobic digestion for wastewater treatment allows almost every industry to decrease costs and meet tighter discharge limits.

What is anaerobic digestion for wastewater treatment

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Anaerobic digestion is the process of bacteria breaking down organic material in an environment without oxygen. They convert organic components (COD) to biogas and biomass; CH4 + CO2 + digestate, a nutrient-rich substance. Anaerobic digestion can be used for wastewater and for sludges. For both, Paques offers efficient, robust, compact and economically favorable alternatives to traditional low-rate anaerobic digesters.

By treating effluent through high-rate anaerobic digestion, almost every industry can decrease costs and meet tighter discharge limits. The BIOPAQ®IC is proven to be the number one technology for anaerobic wastewater treatment, recognized worldwide as the most efficient way to clean industrial wastewater and produce biogas at the same time. Daily, 25.8 million kg of organic pollution is treated with over 1500 anaerobic BIOPAQ® installations of Paques worldwide. These installations produce an amount of biogas equal to the natural gas requirements of 2.8 million households in the Netherlands, reducing 11.2 Mt CO2 per year.

Anaerobic digestion to produce biogas

The method of anaerobic digestion to produce biogas is gaining popularity fast among industrial, scientific and governmental parties. Biogas from sludge can be utilized as a fuel for power generation, steam production and drying processes. It is a renewable energy source, and to limit global warming, thus favored against fossil fuels. The high-rate BIOPAQ® systems are efficient and economical in producing biogas from sludge.

COD removal

Anaerobic digestion is highly effective for COD removal, particularly in treating high-strength industrial wastewaters. It biologically breaks down organic matter in the absence of oxygen, converting it into biogas. This process reduces the COD load (Chemical Oxygen Demand), minimizing potential pollution. Additionally, COD removal via anaerobic digestion generates renewable energy in the form of methane, offering both environmental and economic benefits by reducing energy costs and dependency on fossil fuels.

The effectiveness in COD removal, coupled with energy production, makes high-rate anaerobic treatment a favorable method for wastewater treatment. Anaerobic treatment can be an ecologic as well as economic method to comply with discharge limits. That’s because anaerobic treatment with Paques’ systems reduces discharge costs and environmental impact by removing contaminating compounds from the effluent, ánd produces renewable energy at the same time.

Paques' high-rate anaerobic digestion systems since 1981

Paques Technologies offers highly efficient systems for anaerobic digestion that are tailored for treating complex industrial wastewaters and gas desulfurization. Since 1981, Paques deeply specializes in high-rate anaerobic digestion systems to produce biogas and recover resources from wastewater. Paques’ biological – thus inherently sustainable – systems allow commercial industries and public water management companies worldwide to convert wastewater into valuable resources, such as biogas, reusable water and reclaimed materials.


At Paques, we believe in a cleaner, more sustainable world where innovation in biotechnology plays a crucial role in managing our planet's resources wisely.

If you have any questions or wish to explore what Paques technologies can do for your operations, we encourage you to connect with our team of experts. Our knowledgeable professionals are ready to assist you, offering insights and guidance tailored to your specific needs.

Leading the biotech revolution in wastewater and biogas

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Your inquiry is important to us, and we are eager to assist you in exploring our innovative solutions for biological wastewater and gas treatment.

A member of our expert team will be in touch shortly to discuss your specific needs and how Paques can help you achieve your environmental and operational goals.

We look forward to collaborating with you and hope to build a cleaner, more sustainable world together.

Warm regards,
The Paques Team