The bioconversion of kitchen waste by black soldier fly(BSF)is one of the effective approaches to further utilize the kitchen waste.However,the supply issue of commercial BSF eggs has become a potential instability factor in BSF breeding operation.Therefore,the potential and feasibility of large-scale self-produced insect eggs for converting kitchen waste was researched.The results indicated that using self-produced BSF eggs could increase 5.6 percentage points of larvae conversion and 12.9 percentage points of solid waste reduction efficiency with the dosing ratio of 1∶7 500,which higher than those of purchased eggs,reaching 19.4%and 60.3%,respectively.The protein and lipid content of the larvae were 43.9%and 20.2%,respectively.Further,based on the results of single-factor optimization experiments with egg-to-waste ratio and economic benefit analysis,an optimal ratio of 1∶7 500 was determined.Additionally,taking a 50 t/d waste treatment project by BSF as the basis for calculation,the construction and operation costs of setting up a spawning house were estimated.The operational cost of self-produced BSF eggs was approximately 0.60 yuan/g,which was lower than the market price of 0.80 yuan/g,with an expected annual saving of 0.864 million yuan.Comprehensive analysis showed that establishing a spawning house to achieve self-supply of BSF eggs was feasible and necessary for the large-scale BSF conversion project.
维普
万方数据