【摘要】 用麦麸和剩余污泥调配后,作为营养基质饲养驯化黄粉虫,对黄粉虫富集剩余污泥中Cr3+的最佳条件进行试验研究。结果表明:黄粉虫的富集作用显著受到温度、饲养密度和碳氮质量比交互作用的影响(p<0.05),在温度为30℃、饲养密度为0.4g/cm2、碳氮质量比为2.5的条件下富集效率最高,此时,饲养后黄粉虫体内Cr3+的质量浓度为0.87mg/kg,是原有Cr3+含量的7.25倍;饲养后剩余污泥中Cr3+的质量浓度为0.17mg/kg,约为新鲜污泥中Cr3+含量的1/5。更多还原

【Abstract】 Adjusting wheat bran and residual sludge as nutrition medium to breed and domesticate tenebrio molitor L,the optimal condition for tenebrio molitor L collecting Cr3+ in residual sludge was studied through the test.The results showed that: the bioaccumulation of tenebrio molitor L was affected by temperature,feeding density and carbon-nitrogen mass ratio very apparently(p < 0.05).The bioaccumulation efficiency was the highest when the temperature was 30 ℃,the feeding density was 0.4 g/cm2,the carbon-nitrogen mass ratio was 2.5,and under this condition,in the body of tenebrio molitor L after the breeding,the Cr3+ mass concentration was 0.87 mg/kg,which was 7.25 times that of the original Cr3+ content;the Cr3+ mass concentration in the residual sludge after the breeding was 0.17 mg/kg,which was about fivefold reduction of the mass concentration in fresh sludge.更多还原