Tofu residue production biogas project

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Can you believe that tofu dregs can be turned into clean energy? It’s this very technology that has successfully alleviated Indonesia’s energy shortage problem. So, how does it work? How can tofu dregs be transformed into combustible energy?

In Indonesia, there are many tofu factories, often built along riverbanks. These factories used to discharge the waste dregs from tofu production directly into the rivers. While this practice reduced costs, it caused severe environmental damage. To address this issue, the local government established numerous biogas plants. These plants collect the waste dregs from tofu factories and place them in centralized facilities for fermentation.

Around several dozen tons of tofu dregs can produce about 10 cubic meters of biogas. This clean energy is then transported through a unified pipeline system to local households for cooking purposes. This not only completely resolves the pollution problem caused by tofu dregs but also lowers the price of natural gas, reducing the living costs for residents.

Moreover, the tofu dregs, after fermentation, can be recycled. The remaining organic material, which is not fully catalyzed, can be directly applied to farmland as nutrients for plant growth. Thanks to the construction of these treatment plants, the pollution problem of tofu dregs has been thoroughly solved.