Waste Water Treatment and Biogas in Thailand
In Thailand, wastewater from factories can be disposed of in public waterways. Organic material contained in this wastewater dissolves, a process that releases methane (CH4), a greenhouse gas that is about 20 times stronger than CO2. Greenhouse gases that are released into the atmosphere contribute to the warming of the planet and climate change. The foul odour released when the material is dissolved causes nasty stenches as well as nausea and other health problems in the local population. Obviously, this has a negative influence on the standard of living.
This project has the goal of generating biogas from the wastewater released by production in the Tapioca Flour factory. This will be realized by capturing methane gas, CO2 and other harmful gases from the wastewater. In this way these gases cannot damage to humans, the environment or the climate. To do this, a special foil is used, an ‘Up-flow Anaerobic Sludge Blanket’ (UASB). This is placed lightly over the lagoon to treat the wastewater and to produce and capture the controlled biogas. The gas is used for energy production and not released into the atmosphere. The biogas also generates thermal energy that replaces the fossil fuel previously used by the factory to produce flour.
The project is located next to the Banpong Tapioca Flour factory in Ratchaburi, about 100 km west of Bangkok.
The Climate Neutral Group has various VCS projects in its portfolio because these projects significantly lower CO2 emissions and have many other advantages. We find it important that these projects give a positive boost to the region and the local population. The projects are certified according to the VCS standard, which monitors the project and annually guarantees its quality and results.
Factsheet Waste Water Treatment and Biogas in Thailand >>
Climate and the environment
- Reduction of methane gas (a greenhouse gas that is 20 times stronger than CO2)
- Reduction of air pollution and foul odours
- Prevents waste water from flowing into rivers and the natural environment, such as into the soil
- Maintains the natural vegetation around the riverbed
- Recycles the treated water to irrigate the tapioca and to wash the tapioca roots before they are made into flour
Social and economic
- The use of this technology for wastewater treatment increases the know-how of others in the area and is being copied by other factories
- Increase in knowledge and skills through education and training
- Increased employment opportunities
- Increases the well-being of factory workers and local residents through reduction in unpleasant odours