添加蒙脱石对猪粪好氧堆肥腐熟度和重金属钝化的影响  

Effect of montmorillonite addition on aerobic composting and heavy metals passivation of pig manure

作　　者：黄健[1,2] 肖建中 唐世刚[1] 郑强[1] 丁枫华[1] 张东旭[1] HUANG Jian;XIAO Jianzhong;TANG Shigang;ZHENG Qiang;DING Fenghua;ZHANG Dongxu(College of Ecology,Lishui University,Lishui 323000,China;Department of Chemical Engineering,Ningbo Polytechnic,Ningbo 315800,China)

机构地区：[1]丽水学院生态学院,浙江丽水323000 [2]宁波职业技术学院化工学院,浙江宁波315800

出　　处：《浙江农业学报》2020年第1期141-148,共8页Acta Agriculturae Zhejiangensis

基　　金：浙江省科技厅重点研发项目(2018C02031);丽水市科技特派员项目(2017tpy26)

摘　　要：为进一步提升猪粪堆肥品质,以猪粪和秸秆为原料,以蒙脱石为调理剂进行强制通风好氧堆肥,分析堆肥过程中温度、pH、含水率、电导率、种子发芽指数和重金属形态的变化,研究添加蒙脱石对猪粪堆肥腐熟度和重金属钝化效果的影响。结果表明,添加蒙脱石可提高猪粪好氧堆肥温度,延长高温期,有效促进堆肥腐熟,提升堆肥品质。当蒙脱石添加量为猪类干质量的5%时,堆肥的种子发芽指数可达92%,堆肥效果最好。添加适量蒙脱石可提高堆肥的重金属钝化效果。当蒙脱石添加量为猪类干质量的5%时,对可交换态Cu和Zn的钝化效果最佳,分别达到23.7%和17.2%。To further improve the composting process,montmorillonite was added during pig manure composting with straw.The temperature,pH values,electrical conductivity(EC)values,germination index(GI)and metal phases were determined to illustrate the effects of montmorillonite addition on the maturity of pig manure compost and the passivation effect of Cu and Zn.The results indicated that the addition of montmorillonite could increase the aerobic composting temperature of pig manure and prolong the high temperature period,effectively promote compost maturity and improve compost quality.The seed germination index could reach 92%when the montmorillonite addition amount was 5%of the dry weight of pig manure.Adding proper amount of montmorillonite could improve the passivation effect of heavy metals.The passivation rate of exchangeable Cu and Zn could reach 23.7%and 17.2%,respectively,when the addition amount was 5%of the dry weight of pig manure.

关 键 词：猪粪 好氧堆肥 蒙脱石 重金属 

分 类 号：X705[环境科学与工程—环境工程]