摘要
利用黑水虻处理不同比例的城镇污泥和餐厨垃圾混合物,考察黑水虻幼虫生长发育状况,研究黑水虻对城镇污泥和餐厨垃圾的处理效果并通过测定黑水虻虫粪重金属含量进行安全性评价.结果表明,黑水虻处理城镇污泥和餐厨垃圾的幼虫存活率均大于93％;黑水虻干重(189～299g)随着城镇污泥比例的增加而降低;黑水虻虫体粗脂肪含量为7.73％～26.81％,蛋白质含量为22.80％～36.65％.黑水虻处理城镇污泥和餐厨垃圾减量率超过57％,幼虫生物量为13.8％～23.9％;虫粪有机质含量为60.86％～95.22％,N、P、K总养分含量为4.20％～6.58％;黑水虻处理后其粪便中Cr、Cd、As、Pb、Cu重金属元素含量降低,表明黑水虻粪便具有较大的肥料化利用价值.黑水虻处理技术可实现城镇污泥和餐厨垃圾的减量化和资源化.
Abstract
In the present study,black soldier fly larvae(BSFL)were used to co-treat municipal sludge and kitchen waste mixed at different proportions.Feasibility of co-treatment of both wastes was investigated through evaluating the growth and development,and quality(i.e.,nutrition and heavy metals)of BSFL.The high survival rate(＞93％)of BSFL in all treatments was confirmed.The dry weight(189～299g)of BSFL decreased as the proportion of municipal sludge increased.The proportions of crude fat and protein of larvae accounted for 7.73％～26.81％and 22.80％～36.65％,respectively.Remarkable waste reduction rate of＞57％after the treatments was observed along with high larvae biomass(13.8％～23.9％).As for larvae feces,the contents of organic matter and total nutrition(N,P,and K)reached 60.86％～95.22％and 4.20％～6.58％,respectively.Furthermore,the contents of Cr,Cd,As,Pb and Cu in larvae feces decreased.These findings indicate that BSFL feces are as excellent raw materials made for organic fertilizer.Therefore,BSFL treatment technology is regarded as an feasible approach for valorization of municipal sludge and food waste.
基金项目
甘肃省教育厅高等学校创新基金项目(2021A-034)
兰州交通大学百名青年优秀人才培养计划(1520220314)
维普
万方数据