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Aug 24, 2026
RUD India introduced ECO-DOS at IBET Expo 2026. The substrate feeder handles difficult solid feedstock, manure, silage and straw, without the bridging and clogging that trip up standard feeding equipment.
The expo ran from 11 to 13 August 2026 at India Expo Centre & Mart in Greater Noida, with CBG as one of its core sectors. That's no coincidence. India's compressed biogas push has built plants across the country that need equipment designed for real feedstock, not lab-condition biomass. This piece covers what ECO-DOS does, how it works, and why reliable substrate feeding matters for India's growing CBG sector.
Getting solid feedstock into a digester sounds simple until you're running it daily. Plants generally rely on one of three approaches. Manual or loader-based feeding, where a wheel loader or labour crew pushes material into a hopper, works for small operations but doesn't scale and depends on the operator that day. Screw-only feeders move material mechanically but were built for dry, uniform inputs, not wet manure or long-strand straw. Dedicated substrate or dosing feeders sit between the storage yard and the digester's screw conveyor, controlling how much material goes in and at what rate. Each approach trades off differently on consistency, labour and equipment life.
Manure, silage and straw don't behave like the free-flowing granular material most feeding equipment was designed around. Manure is wet, sticky and inconsistent in density from one load to the next. Silage is fibrous and compacts under its own weight, which is exactly what causes bridging inside hoppers and augers, where material clumps and stops flowing instead of feeding through. Straw adds long fibres that wrap around augers and jam standard screw mechanisms outright.
The knock-on effects show up fast. Inconsistent dosing throws off the digester's feed schedule, which affects gas yield. Bridging and clogging mean more downtime and manual intervention, pulling labour away from other jobs. And the material itself, wet, abrasive and often mildly corrosive, wears down standard equipment faster than operators expect. A manure feeding system or silage feeder built for dry biomass tends to need constant babysitting. Straw and silage feeding equipment has to be designed for this substrate from the start, not adapted after the fact.
ECO-DOS is RUD India's scraper-floor-based substrate feeder and dosing system. It sits at the front end of a biogas or CBG plant's material handling line and transfers solid biomass, manure, silage, straw and poultry litter among them, into the plant's screw conveyor at a controlled, steady rate.
Worth being precise here: ECO-DOS is not a fuel-combustion conveyor. It doesn't feed a boiler or furnace. It's feeding equipment built specifically for anaerobic digestion, where the goal isn't burning material but dosing it consistently enough that the digester's biology stays stable. That distinction matters, because biomass handling in India covers two different use cases, power-plant fuel feeding and digester substrate feeding, and equipment built for one doesn't necessarily work for the other.
Also, Read: Why Standard Conveyors Fail with Biomass Fuel?
| Feature | What It Does | Why It Matters |
|---|---|---|
| Scraper-floor conveying | Moves material along the bunker floor toward the discharge point, not pulled through by an auger | Avoids bridging and clumping in fibrous, wet substrate |
| Calibrated double-strand round steel chain | Drives the scraper floor under continuous, heavy pulling load | Holds up under abrasive, wet conditions over years of use |
| Exchangeable blades and pocket wheels | Wear parts swap out individually, not the whole assembly | Cuts maintenance cost and downtime |
| Stainless-steel rails | Resists the corrosive effects of wet manure and silage runoff | Extends service life where standard steel degrades quickly |
| Outdoor, freestanding installation | Doesn't need a dedicated indoor structure | Simplifies site planning for retrofits |
| PLC-based control compatibility | Integrates with a plant's programmable logic controller | Lets dosing rate and timing run automated, monitored centrally |
India's SATAT scheme and its wider waste-to-energy push have driven a wave of new CBG plant construction, and each of those plants needs a reliable way to move solid feedstock. ECO-DOS fits that role directly, which is part of why RUD India, a compressed biogas plant equipment manufacturer in India, positions it as core infrastructure rather than an add-on.
Cattle and poultry manure-based plants are an obvious fit, given how much of India's biogas capacity runs on livestock waste. Agri-residue digesters processing straw, silage or GPS face the fibrous-material problems ECO-DOS is built around. Dairy and agro-processing facilities running their own waste-to-energy setups need the same controlled dosing, at a different scale.
This is digestion feedstock handling, not combustion fuel handling. The biomass power plant side of material handling is covered separately on the RUD India blog.
| Factor | Manual / Loader Feeding | Standard Screw-Only Feeder | ECO-DOS |
|---|---|---|---|
| Dosing consistency | Varies load to load | Consistent with dry, uniform material | Steady across manure, silage and straw |
| Wear and maintenance | Low equipment wear, high labour wear | Auger wear rises with wet, fibrous material | Exchangeable parts cut long-term cost |
| Labour dependency | High, needs constant involvement | Moderate, still needs monitoring | Lower, built for less intervention |
| Wet or fibrous suitability | Slow and inconsistent | Prone to bridging and clogging | Designed for this material |
| Energy consumption | No mechanical power, high labour cost | Moderate, spikes with jams | Low per tonne, no jam spikes |
No method suits every plant; a small operation running dry, uniform feedstock might suit a standard screw feeder. This is about matching equipment to the plant.
IBET Expo 2026, the third edition of India's national bioenergy exhibition, ran from 11 to 13 August at India Expo Centre & Mart in Greater Noida. The event was jointly organised by the Indian Federation of Green Energy and MM Activ Sci-Tech Communications, with Compressed Biogas as one of the core sectors alongside ethanol, biodiesel and wider waste-to-energy technologies.
RUD India used the platform to introduce ECO-DOS to the country's bioenergy industry, positioning it as purpose-built equipment for the feeding challenges CBG and biogas operators face daily. The expo's CBG focus made it a natural venue, much of the audience were the plant operators and EPC contractors who deal with substrate feeding firsthand.
If ECO-DOS looks relevant to a plant you're building or upgrading, reach out to RUD India for a project-specific consultation.
India's CBG and biogas sector isn't slowing down, and every new plant adds to the list of operators dealing with the same feeding headaches: bridging, inconsistent dosing, equipment that wears out faster than expected. Reliable substrate feeding is becoming an operational factor that determines whether a plant hits its gas yield targets consistently.
ECO-DOS is RUD India's answer to that problem. If substrate feeding is a bottleneck at your site, a site assessment with the RUD India team is a reasonable next step.
For more information, visit our Biomass Industry page.
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