摘要
采用室外模拟堆肥试验,研究了4种重金属钝化剂(A:2.5%沸石+2.5%粉煤灰;B:2.5%沸石+5.0%磷矿粉;C:2.5%沸石+2.5%钙镁磷肥;D:2.5%沸石)与CK(不添加钝化剂)处理对猪粪堆肥中Cu、Pb、Zn形态转化的影响.结果表明,堆肥处理促进猪粪中重金属Cu、Pb、Zn由活性高的可交换态向活性低的残渣态转化;堆肥中添加钝化剂沸石、粉煤灰、磷矿粉、钙镁磷肥,能提高堆肥对重金属Cu、Pb、Zn的钝化能力;处理A和B对可交换态重金属Cu、Pb和Zn的钝化效果均在80%以上,与对照差异显著.
Experiments were carried out to study the effect of 4 heavy-metal passivators（A ：2.5% zeolite ＋2.5% coal fly ash; B ：2.5% zeolite ＋ 5.0% phosphate rock; C： 2.5% zeolite ＋2.5% calcium magnesium phosphate; D： 2.5% zeolite.） and CK on concentration and forms of heavy metals in pig manure after aerobic compositing. Then the passivation effect of different heavy metal passivators on the compost process was discussed. The results showed ：the 4 passivators could promote transformation of heavy metals： Cu, Pb, Zn in the aerobic composting from the state of being active and trans formable into the state of being inactive in the form of residues. Application of passivators： zeolite, coal ftyash, phosphate rock, calcium magnesium phosphate could enhance its capacity to passivate heavy metals Cu, Pb, Zn. Among the 4 heavy metal passivators, passivator A or B produced the best passivation effect in decreasing the content of exchangeable Zn, Cu or Pb by over 80%, indicating a significant difference with test CK.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第6期708-712,共5页
Journal of Hunan Agricultural University(Natural Sciences)
基金
国家科技支撑计划项目(2007BAD87B11)
湖南省科学技术厅重点项目(2006NK2001)
湖南省教育厅重点项目(2007A028)
湖南省科学技术厅项目(2007FJ4237
2007NK3093)
关键词
猪粪
堆肥
重金属形态
钝化效果
pig manure
composting
heavy metals status
passivation effect
作者简介
蒋强勇（1982-），男，湖南岳阳人，硕士研究生，主要从事农业废弃物处理利用研究，jiangqiangyong0615@yahoo．com．cn，13875991243；
通讯作者，lq8053@hunau．net．
