Anaerobic Digestion
Does Every Biogas Plant Need H₂S Removal? Biogas Desulfurization Explained
Biogas systems face corrosion threats from hydrogen sulfide (H₂S), drastically cutting equipment life. With removal efficiencies over 99%, methods like iron oxide media, chemical scrubbing, and biological techniques combat this issue. Choosing the right system depends on multiple factors, ensuring sustained efficiency while minimizing costs…
Anaerobic Digestion Project Success: The Digester Is Only One Link in the Failure Chain
A well-designed anaerobic digester is essential, but it doesn’t guarantee a successful anaerobic digestion plant, and many great AD projects have sadly failed to achieve Anaerobic Digestion Project Success. Every AD plant relies on a connected chain of feedstock supply, reception, pre-treatment, pumping, biological treatment, gas handling, energy export, digestate management and operational control. If […]
3 Anaerobic Sludge Digestion Case Studies: Biogas to RNG
These three anaerobic sludge digestion case studies explain how water utility companies are embracing the anaerobic digestion process as their method of choice for the treatment of the vast quantities of solid sludge materials which they aerate and settle out of the sewage entering their sewage works every day. While doing that they produce a […]
Borger’s FlowSep: Cutting the Fines That Damage Biogas Plants
Our sponsor Börger sent us this press release under the headline “‘Fines’ reduced at biogas plants by Börger’s FlowSep” – and yes, before anything else, it’s worth being upfront about the headline itself. It’s a deliberate play on words. In everyday English, “fine” tends to mean a financial penalty, and we suspect more than a […]
Optimizing Anaerobic Digestion: How Chemical Dosing Cabinets Ensure Biological Stability & Process Reliability
The Importance of Best Practice in the Provision of Precise Dosing in Anaerobic Digestion Process Control Maintaining optimal biology inside an anaerobic digester requires precise chemical control. Whether adding alkalis (such as sodium hydroxide or lime) to buffer pH against Volatile Fatty Acid (VFA) accumulation, dosing trace elements (like cobalt, nickel, and iron) to feed […]
Anaerobic Digestion Process Steps: The 4 Stages Explained
Anaerobic digestion takes place through four closely connected biological process steps: hydrolysis, acidogenesis, acetogenesis and methanogenesis. Together, these microbial stages convert complex organic material into biogas—principally methane and carbon dioxide—and digestate. New to the subject? Start with our complete introduction to anaerobic digestion. This article concentrates specifically on the biochemical process steps, the compounds produced at each stage […]
How Depackaging Equipment Improves Biogas Yield in Anaerobic Digestion Plants
Depackaging equipment transforms food waste into cleaner feedstock for anaerobic digestion, enhancing biogas yield. By removing contaminants and maximizing organic recovery, these systems boost volatile solids and stabilize microbial activity, as seen at facilities like Bio-En Power. Discover how this technology optimizes operational efficiency…
How Anaerobic Digestion Reduced Farm Fertiliser Costs to One Third
Can anaerobic digestion materially reduce a farm’s fertiliser costs? The answer depends on the feedstocks, crops, land availability, digestate analysis, storage and spreading arrangements. However, one established Irish biogas plant reported a particularly striking result: annual fertiliser costs that had previously been about €100,000 were reduced to one-third of that level. This article examines how digestate […]
Precision Machining and Metal Fabrication for Anaerobic Digestion Pumps
Anaerobic digestion plants may be recognised by their large tanks, pipework and gas holders, but some of their hardest-working components are hidden inside pumps and macerators. Precisely machined rotors, shafts, wear plates, cutting parts and sealing surfaces help keep abrasive, fibrous feedstock moving towards the digester—and keep a small mechanical problem from becoming a costly […]
UASB Reactors vs. CSTR Digesters: Which Is Better for Industrial Wastewater Treatment?
UASB reactors and CSTR digesters are cornerstones in industrial wastewater treatment. Each has unique strengths: UASB shines in low-solids environments, while CSTR excels with high-solids streams. Choosing the right one means optimizing efficiency and costs. Learn where each technology truly excels and breaks down…
Landfill Gas to RNG Project Timeline: From Feasibility to First Gas Delivery
Landfill gas to RNG projects, taking 3-5 years, transform landfill gas into renewable energy. The process involves engineering, construction, and feasibility studies. With a higher energy yield than biogas electricity, these projects utilize cutting-edge technology for pipeline-ready biomethane production, proving efficient and sustainable energy solutions…
Starch Wastewater Treatment Processes Guide: Anaerobic Digestion & Alternatives
Starch wastewater is a high-organic-load effluent from starch production. Anaerobic digestion emerges as a top solution, achieving high COD removal while generating biogas. Advanced reactors handle massive volumes, but a combination of treatments tailored to specific criteria is key for effective management…
