Taiwan Prison Turns Kitchen Waste into Gold with Black Soldier Fly Larvae Program

Yunlin Second Prison in Taiwan is transforming kitchen waste into a valuable resource through an innovative black soldier fly larvae (BSFL) program. The prison has introduced a BSFL farming and application vocational training course, equipping inmates with new skills while addressing the significant challenge of managing daily kitchen waste.

With approximately 1,200 to 1,500 kilograms of kitchen waste generated daily by its 3,300 inmates, the prison sought a sustainable solution, especially after a ban on using kitchen waste for pig farming. The BSFL program, launched late last year, effectively processes this waste, converting it into organic fertilizer.

This fertilizer is then used to cultivate pesticide-free hydroponic vegetables in a smart greenhouse. The prison reports that BSFL processes about 24 to 27 metric tons of kitchen waste monthly, yielding enough fertilizer to produce around 1,300 bags of vegetables per month. The produce is planned for sale after obtaining certification, with potential buyers including prison staff and other government agencies.

The initiative has received support from various organizations, including technology companies, universities, and local government bureaus, which have provided equipment, technical guidance, and resources. Prison officials expressed surprise and satisfaction at the healthy growth of the vegetables, commending the program for integrating circular economy principles and smart agriculture to train inmates for future employment in the green industry.