污染控制技术及原理
单德鑫,李淑芹,许景钢.好氧堆肥对难溶性磷转化的影响[J].环境科学学报,2009,29(1):146-150
好氧堆肥对难溶性磷转化的影响
- Effects of aerobic composting on transformation of rock phosphate
- 基金项目：哈尔滨市科技攻关基金项目(No.2005AA4CS114);黑龙江省教育厅科学技术指导项目(No.11513027)
- 作者
- 单位
- 单德鑫
- 东北农业大学资源与环境学院, 哈尔滨 150030
- 李淑芹
- 东北农业大学资源与环境学院, 哈尔滨 150030
- 许景钢
- 东北农业大学资源与环境学院, 哈尔滨 150030
- 摘要：在牛粪进行工厂化堆肥过程中,加入难溶性磷矿粉,探讨堆肥对难溶性磷转化能力的影响.结果表明,加入磷矿粉可使堆肥中活性有机磷、中等活性有机磷、中稳性有机磷、高稳性有机磷含量均有不同程度的提高;磷矿粉加入量为牛粪干重4%(P1DM)和8%(P2DM)的处理与未加磷矿粉的处理相比各形态磷含量分别增加120.99%、125.32%,34.86%、38.64%,27.74%、30.84%,21.38%、20.06%;P2DM和P1DM处理之间的差异分别为4.33%,3.78%,3.10%,-1.32%.电镜观察显示,堆肥后磷矿粉典型的矿物特征消失,表面呈蜂窝状.研究结果表明,通过堆肥生产富磷粪肥可为解决中国磷素资源缺乏、化学磷肥利用率低等问题提供一条生物学途径.
- Abstract：Organic acid substances produced during dairy manure (DM) composting could transform rock phosphate.The effects of composting on increasing rock phosphate solubility were studied by mixing ground phosphate rock into DM during the composting process.Compared to DM treatment,P1DM treatment increased the active organic phosphate by 120.99%,moderately active organic phosphate by 34.86%,moderately stable organic phosphate by 27.74% and highly stable organic phosphate by 21.38%.Treatment with P2DM increased the active organic phosphate by 125.32%,moderately active organic phosphate by 38.64%,moderately stable organic phosphate by 30.84% and highly stable organic phosphate by 20.06%, compared with DM treatment alone.The increase was positively correlated with the quantity of phosphate rock added.At the final stage of composting,scanning electron microscopy revealed cavities on the phosphate rock surface,which suggested that DM composting could provide a biological approach to increasing phosphate solubility and improving the efficiency of phosphate fertilizer.
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