Nakhon Biogas, Thailand

Generating sustainable electricity from wastewater biogas

Thailand
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The production of cassava starch is a large industry in Thailand. It's production however, produces large amounts of wastewater that, when stored in large open lagoons, emits harmful methane emissions into the atmosphere. Methane is a greenhouse gas 21 times more potent than CO2.

Standort
Thailand
Art
Abwasseraufbereitung
Standards
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Sustainable Development Goals

Clean Water and Sanitation

850,000 m3 of water

treated each year on average, providing a clean recycled water resource to farmers

Affordable and Clean Energy

1,600 MWh

generated each year on average, providing an alternative to the burning of fossil fuels

Decent work and economic growth

11 permanent jobs

created, boosting local economies with new income streams

Climate Action

97,000 tonnes of CO2e

avoided each year on average by capturing emissions and displacing fossil fuels

The Solution

Objective: Generating sustainable electricity from wastewater biogas This project mitigates greenhouse gas emissions and prevents local air pollution from a Thai starch plant by capturing methane and generating sustainable energy which also benefits local communities. Prior to this project, wastewater was treated through cascading open lagoons. This process resulted in methane being steadily released into the atmosphere. The project activity involves installing a closed lagoon anaerobic system that capture the methane gas emissions and uses it for clean energy production in the plant. This not only avoids the emission of harmful gas, but replaces energy sourced from the burning of fossil fuel.

The cassava starch, also called tapioca, is used for food, animal feed, and industrial purposes.

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Using methane from wastewater generates electricity and avoids burning thousands of tonnes of fossil fuels

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The Impact

The project has significantly improved the local air and water quality; at the same time the fossil fuel use of the starch plant has been significantly reduced. The project and the resulting carbon revenue generate jobs for locals and supports social and educational activities. The clean wastewater is used to irrigate nearby fields and allows fish farming, enabling local communities to increase their income.

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