New shrimp breeding model produces power
A new, hi-tech shrimp breeding model that generates electricity via biogas and deals effectively with sludge is being piloted in Bến Tre Province. The project, being carried out by Japanese and Vietnamese scientists in the Mekong Delta province, deploys the closed-cycle shrimp farm model, where sludge and other organic waste from shrimp ponds are mixed and put in a methane fermentation facility to produce biogas, which is desulfurized to create electricity. The bioelectricity is supplied to a new aeration and air diffuser system in shrimp breeding, said Professor Takuya Kitaoka of Kyushu University. The waste produced during the production of biogas is sent to a carbonization facility to produce charcoal, which is a soil improvement agent, boosting cultivation, he added. Another new aspect of the model is that it uses a new aeration and air diffuser system which diffusers air from the pond’s bottom to its surface. This replaces the propellers currently used to create oxygen, but this is confined to the surface.
