In food waste anaerobic digestion, the right pump is rarely just a pump. It is a key part of the plant’s configuration, uptime, maintenance strategy, hygiene control and long-term reliability.
That is why pump configuration matters so much in demanding AD and biogas applications. Food waste can be fibrous, viscous, abrasive and unpredictable. It may contain entrained solids, packaging residues, grit and other difficult materials that can quickly expose weaknesses in conventional pumping equipment.
Landia, already well known in the anaerobic digestion sector for its chopper pumps and GasMix digester mixing system, has now supplied a new long-coupled pump solution for a food-waste-to-renewable-energy application served by HAYLEY DEXIS.
The project is notable because the pumps were developed from Landia’s existing range of close-coupled MPTK-I Chopper Pumps, but configured as long-coupled units to meet a specific site requirement.
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Why Long-Coupled Pump Design Can Matter in Food Waste AD
For many biogas and food waste operators, the first question is whether a pump can handle the material. That remains essential, but it is not the only question. The more mature question is often whether the pump can do the job safely, reliably and accessibly over the long term.
Long-coupled pump arrangements can be especially useful where there is a practical need to keep the pump’s wet end and the drive components separated. This may help with access, maintenance, hygiene and protection of the motor and drive assembly from the more aggressive wet process environment.
In this case, HAYLEY DEXIS identified that a long-coupled Landia design was the most suitable solution for its customer’s application.
“In simple terms, it’s all about keeping the wet-wet and the dry-dry. We worked closely alongside Landia to put together a tailored solution to suit the best interests of our customer.”
That explanation from Rob Bentley, Sales Engineer at HAYLEY DEXIS, captures a point that many AD plant engineers will recognise immediately. A good installation is not just about achieving flow. It is about placing the right machine in the right configuration for the process conditions and the people who will maintain it.
Landia Develops Long-Coupled Pumps from Proven MPTK-I Chopper Pump Range
Landia has built a strong reputation in the AD and biogas sector through equipment designed for difficult liquids and high-solids organic materials. Its small-footprint close-coupled chopper pumps are already used in food waste, farm waste, industrial food processing and sludge-related applications.
For this latest project, the company supplied new long-coupled pumps developed from its close-coupled MPTK-I Chopper Pump range.
The MPTK-I range is associated with applications where solids handling, maceration and resistance to clogging are important. In food waste AD, these characteristics are often central to good process reliability because feedstocks are rarely perfectly consistent.
The long-coupled version, therefore, appears to combine Landia’s established chopper pump design philosophy with a layout better suited to this customer’s wet/dry separation requirement.
A Collaborative Pump Solution with HAYLEY DEXIS
Landia says the project followed a close collaboration with HAYLEY DEXIS, whose engineering team serves the food-waste-to-renewable-energy customer.
For Landia, the project also fits into a wider pattern of work with HAYLEY DEXIS across AD, biogas and food industry installations, including retrofit applications.
“We pride ourselves on our near 100 years of primarily designing and building long-lasting close-coupled pumps, but on this occasion, when HAYLEY DEXIS identified Landia’s long-coupled design as the best possible solution for their customer, we were keen to collaborate.
“This latest project with HAYLEY DEXIS follows numerous successful AD/biogas and food industry installations that we have worked on together, including several retrofits.”
Those comments from Howard Burton, Technical Sales Engineer at Landia, underline the importance of supplier flexibility in modern biogas projects. Although standardised product ranges are useful, AD plants often need equipment adapted to the realities of individual sites.
Why This Matters for AD Operators
Food waste AD plants depend heavily on the reliability of reception, transfer and process pumping systems. A pump failure can interrupt feedstock movement, create odour and hygiene problems, delay tankering or feeding schedules, and place extra pressure on maintenance teams.
This is why AD pump selection should be treated as a whole-life engineering decision rather than a simple procurement exercise.
Key considerations usually include:
- Solids handling: Can the pump cope with fibrous, irregular and partially contaminated food waste streams?
- Anti-clogging performance: Is the pump designed to reduce blockages and ragging?
- Maintenance access: Can operators inspect, service and repair the equipment without unnecessary disruption?
- Wet/dry separation: Are vulnerable dry components protected from the wet process environment?
- Retrofit suitability: Can the pump configuration fit into an existing plant layout?
- Long-term reliability: Is the system robust enough for continuous AD plant operation?
The Landia and HAYLEY DEXIS project is a useful reminder that pump configuration can be just as important as pump model. In a mature AD industry, equipment suppliers increasingly need to adapt proven technologies to suit the realities of individual sites.
Landia’s Wider Role in Biogas and Anaerobic Digestion
Landia is a founder member of the Anaerobic Digestion & Bioresources Association and continues to supply equipment to the AD and biogas industry worldwide.
Its technologies include close-coupled chopper pumps, long-coupled pump configurations and the company’s GasMix digester mixing system. These are used across food waste, farm waste and a growing number of municipal sludge installations.
For AD plant designers and operators, the company’s ongoing work in retrofit and site-specific pumping applications reflects an important trend: many biogas plants now need equipment that can improve reliability within existing layouts, not only on new-build projects.
Press Release: For Food Waste/Biogas, Landia Takes the Long-Term Pump View with HAYLEY DEXIS
To support a customer with a tricky application for a biogas/AD end-user, Landia has supplied new long-coupled pumps that have been developed from its existing range of close-coupled MPTK-I Chopper Pumps.
For the food-waste-to-renewable-energy company, whose engineering needs are served by HAYLEY DEXIS, there was a specific need to use long-coupled pumps, as the company’s Sales Engineer, Rob Bentley, explains:
“In simple terms, it’s all about keeping the wet-wet and the dry-dry. We worked closely alongside Landia to put together a tailored solution to suit the best interests of our customer.”
Founder members of ADBA, the Anaerobic Digestion & Bioresources Association, Landia continues to supply its small-footprint, close-coupled pumps, plus its acclaimed GasMix digester mixing system worldwide to the AD/biogas industry, from food and farm waste sites to an increasing number of municipal sludge installations.
Speaking for Landia, Howard Burton, Technical Sales Engineer, said:
“We pride ourselves on our near 100 years of primarily designing and building long-lasting close-coupled pumps, but on this occasion, when HAYLEY DEXIS identified Landia’s long-coupled design as the best possible solution for their customer, we were keen to collaborate.
“This latest project with HAYLEY DEXIS follows numerous successful AD/biogas and food industry installations that we have worked on together, including several retrofits.”
Further Reading
- Landia Chopper Pumps Shine for Effectiveness & Reliability
- Food Waste Pump Proves Itself at Largest US University Biogas Plant
- Landia AD Pumps and Mixers Supply the Global Anaerobic Digestion Market
- Landia Custom-Built Chopper Pumps and Industrial Mixers Reach Major Milestone
Editor’s Note
This article is based on information supplied in a Landia press release. It has been edited and expanded for readers interested in anaerobic digestion, food waste pumping, biogas plant reliability and process equipment selection.
