An innovative continuous self-separation reactor to process rural food waste using black soldier fly larvae  

作　　者：Shuwen Du Mingjie Zhang Kainan Zhang Zhengyang Zang Aiping Yao Donglei Wu 

机构地区：[1]College of Environmental and Resource Sciences,Zhejiang University,Hangzhou 310058,China [2]Jinhua Academy of Agricultural Sciences,Jinhua 321017,China [3]Zhejiang Ecological Civilization Academy,Anji 313300,China

出　　处：《Frontiers of Environmental Science & Engineering》2025年第4期15-26,共12页环境科学与工程前沿(英文)

基　　金：supported by the National Key Research and Development Project(No.2018YFD1100601-03).

摘　　要：The utilization of black soldier fly larvae(BSFL)in food waste treatment has garnered significant attention because of its alignment with the principles of a circular economy.However,in rural areas,inadequate management of waste segregation and a high proportion of difficult-to-decompose materials in food waste have reduced the treatment rate by BSFL.After a year-long investigation into rural food waste,we designed a BSFL continuous self-separation reactor,which incorporated microorganisms to enhance waste degradation.The reactor also maintained heat retention,facilitated leachate collection,and enabled the continuous feeding and automated separation of adult black soldier flies.Both single-batch and multi-batch continuous operation modes of the reactor consistently and effectively treated food waste.In the single-batch mode,operation for 10 d resulted in a 38.9%reduction in the wet weight of food waste,with a larval biomass yield of 80.9 g/kg.In the multi-batch continuous mode,operation for 32 d led to a 56.6%reduction in the wet weight of food waste,with a larval biomass yield of 64.7 g/kg.In addition,a 24-h sufficient consumption experiment revealed that the degradation of organic matter in rural food waste was significantly affected by the combined efforts of BSFL and microorganisms.The harvested larvae exhibited high levels of crude protein and crude fat,making them a valuable high-protein,high-fat animal feed.Overall,the reactor demonstrated notable space efficiency and effective waste reduction,providing key insights into the use of BSFL for food waste management.

关 键 词：Food waste Black soldier fly larvae Self-separation reactor Biomass yield High-protein animal feed 

分 类 号：X705[环境科学与工程—环境工程]