Better Biogas System Solution
Biogas booster blower and VFD explosion-proof motor and VFD control
Have you ever learn biogas power plant?
Biogas was firstly discovered in marshes and produced through the breakdown of organic matters by micro-organisms under anaerobic condition. The purpose of biogas systems is to harvest biogas from wastewater from industrial process.
As aforementioned, the biogas are generated in anaerobic conditions in an anaerobic fermentation tank or often called “Anaerobic Digester tank”. Biogas primarily consists of methane (CH4), carbon dioxide (CO2), and small amounts of H2S and other gases. In biogas generation, the useful product is generally CH4, which can be used for electricity generation and burning. Other byproducts such as hydrogen sulphide (H2S) will need to be purified to avoid polluting the environment.
Processes in biogas generation
Three stages in biogas generation are shown in the below figure.
In the first and second stage (Liquefaction and acid production stage), there are no biogas production, we named it as “non-Methanogenic stage”.
Phase 1: Non-Methanogenic Stage
As methanogens cannot directly use polysaccharide, proteins and fats directly, the purpose of this stage is to convert those components to simple molecules (namely CH3COOH) that can be used by methanogens. Hence, even though this stage does not produce biogas, it is a very important phase in the biogas production process.
Phase 2: Methanogenic Stage
This stage is where the methanogens produce methane gas. This phase has three characteristics:-
This stage is where the methanogens produce methane gas. This phase has three characteristics:-
- It is strictly anaerobic, presence of oxygen will seriously inhibit methanogen’s growth, and thus reducing biogas production
- The methanogens can only digest simple acetic acid molecules, CH3COOH
- The growth rate of methanogens is slower than other bacteria in the system by 8 to 12 folds.
AIRUS Biogas booster blower and VFD explosion-proof motor and VFD control are widely used during the process of biogas boostering.
