How a lead-follow activated carbon stage takes biogas from about 200 ppm H₂S to below 8 ppm after a bio-scrubber, sized for a 730 Nm³/h plant.
Organics Articles
Organics Group has spent more than thirty years turning ammonia-laden wastewater, landfill gas, organic and food waste, palm oil mill effluent into revenue with biogas flaring technology deployed on over 300 projects worldwide, commissioned across Europe, Asia, the USA and Oceania. This collection brings that work out of the project archive written for the engineers, regulators and operators who decide which technologies is going to solve their problems.
Siloxane Removal From Landfill Gas: Chilling and Carbon
Why chilling to -30°C followed by activated carbon protects landfill gas engines from siloxane deposits.
Sewage Biogas Flare vs Landfill Gas Flare: What Changes?
How a sewage biogas flare differs from a landfill gas flare: no booster, stainless steel gas train, pressure-switch control and a 70% methane design limit.
How to Size a Covered Lagoon for Palm Oil Mill Effluent
A seven-step worked example of sizing a POME covered lagoon, from mill throughput to volume, retention time and biogas flow.
Ultrasonic or Electromagnetic Flowmeter for Leachate?
Ultrasonic or electromagnetic: how to choose a leachate flowmeter, and what changing type means for pipework, spares and delivery.
Bamboo Charcoal Pyrolysis Plant: What to Ask a Supplier
Bamboo charcoal pyrolysis plant: the feed, kiln, tar and fuel questions to ask a supplier before you buy, from a real tender questionnaire.
Mobile LPG Flare for Pipeline Depressurisation
How a hinged, truck-mounted LPG flare is designed for pipeline depressurisation with no site utilities, plus the tender points that were negotiated.
Replacing a Steam Generator or Only Its Tube Bundle
Whole vessel or tube bundle only: how to choose when replacing a steam generator on a stripping plant.
Waste Tyre Pyrolysis: A 100 Tonnes-Per-Day Power Plant
Waste tyre pyrolysis for power: how 100 tonnes a day gives about 8 MW gross, what sets net output, what the owner supplies and a 74-week programme.
Biogas Desulphurisation and Dehumidifier for Gas Engines
Why H₂S removal comes before drying when preparing lagoon biogas for an engine.
Plug-and-Play Mobile Open Flare: What Contractors Get on the Skid
A 500 m³/h mobile open flare supplied for an engineering contractor: what is on the skid, what is optional, and how pressure is controlled.
Replacing Economiser Cassettes on an Ammonia Stripping Plant
What an economiser cassette replacement includes and why lead time dominates the plan.
Mobile Open Flare for Low-Methane Landfill Gas
How a skid-mounted open flare with two interchangeable hinged tips handles low-methane landfill gas over a very wide flow range.
RDF Pyrolysis and Gasification: A Modular 2.5 MW Design
A modular RDF pyrolysis and gasification design where each 2.5 MW module shares feed and turbine.
Vent Gas Flare for Odour Control: The Butyraldehyde Problem
Vent gas flare design for an odorous chemical vent: why turndown, tail-off and support fuel matter for a 650 m³/h enclosed flare.
Thermal Ammonia Recovery From Sludge Liquor: Process Selection
Why thermal ammonia stripping beat biological and chemical routes for digested sludge liquor on a tight site.
Dry Cell Anaerobic Digester for Municipal Waste: A Worked Example
How a dry cell anaerobic digester turns mixed municipal waste into biogas: a ten-cell, 48-day rotation sized for about 460 tonnes a day.
Thermal Ammonia Stripping with an Acid Scrubber: Making Ammonium Sulphate from Centrate
Thermal ammonia stripper with acid scrubber: treating 2,000 m³/day of centrate and recovering ammonium sulphate from the stripped ammonia.
Landfill Gas Well Monitoring: Automating 150 Extraction Wells
Landfill gas well monitoring that samples, analyses and adjusts: how one system serves 150 wells and where its limits lie.
Leachate Methane Stripping at a Small Landfill
A small baffled-tank aeration plant for stripping dissolved methane from landfill leachate.
Cooling Treated Leachate Below 40°C: Three Options Compared
A plate heat exchanger with a cooled water circuit can hold exit leachate below 40°C. We compare the three ways of cooling that circuit.
Flexible Connectors for Hot Gas Fans: Specifying Bellows
How to specify flexible connectors (bellows) for hot gas fans, using three economiser fan connections as an example.
Landfill Leachate Treatment: Ammonia Stripping, MBR, Dewatering and Odour Control
A 2,000 m³/day leachate pre-treatment works built around thermal ammonia stripping, an MBR, a screw press and activated-air odour control, designed for changing leachate over the life of a landfill.
Flaring Low-Methane Landfill Gas: A 350 Nm³/h Flare and Blower Package
Low calorific landfill gas flare: a 350 Nm³/h flare and blower package designed for gas down to 12% methane, with a propane pilot.
Molasses Wastewater Biogas: Sizing a Covered Lagoon for COD of 85,000 mg/l
How a covered lagoon was sized for 700 m³/day of molasses mill effluent, and why hydrogen sulphide at 18,000 ppm needs three bioscrubber vessels.