Waste to Biogas (WTB)
Anaerobic digestion solutions that convert suitable biodegradable waste into useful biogas and digestate.
Waste to Biogas systems provide a controlled anaerobic route for suitable food, animal and municipal organic feedstocks where renewable-gas recovery is technically and operationally appropriate.
Waste to Biogas (WTB)
Biogas provides a practical route for treating biodegradable waste while recovering renewable fuel. Instead of sending suitable organic material to landfill, an engineered anaerobic-digestion system can convert it into biogas and nutrient-bearing digestate.
The process takes place in an enclosed oxygen-free environment where microorganisms break down food waste, animal waste and other biodegradable feedstocks.
How Biogas Can Be Used
After suitable treatment and upgrading, the recovered gas can be used in different energy applications. Plant design and gas-cleaning requirements depend on the intended end use.
- Electricity generation through suitable gas engines or generators.
- Purification and upgrading for Bio-CNG applications.
- Direct thermal or cooking-fuel use where the gas quality and system design are appropriate.
Fuels
Biogas Process Cycle
A reliable waste-to-biogas project starts with correct feedstock segregation and conditioning before anaerobic digestion. The final stage focuses on safe recovery and use of both the gas and treated digestate.
- Waste aggregation and segregation
- Physical or process pre-treatment
- Anaerobic digestion
- Biogas and digestate recovery
The live process cycle identifies the principal outputs as biogas and liquid fertilizer/digestate after anaerobic digestion. Final gas cleaning, digestate stabilization and end use depend on feedstock quality, plant design and applicable operating requirements.
Indicative Biogas Production From Different Sources
Actual gas output varies with feedstock composition, total solids, temperature, retention time, plant design and operating conditions. The figures below are retained as indicative reference values rather than guaranteed plant performance.
| Waste Feed | TSS (%) | Biogas Production (m³/day/ton) |
|---|---|---|
| Cow Dung | 14–23 | 30–35 |
| Mule Dung | 20–22 | 30–35 |
| Food Waste | 10–20 | 75 |
| Poultry Waste | 20–90 | 120 |
| Municipal Organic Waste | 12–20 | 70 |
| Vegetable Waste | — | 60–70 |