添加不同钝化剂降低污泥堆肥的植物毒性研究  

Study on reducing toxicity to plant from sewage sludge compost treated by different passivation reagents

作　　者：姜华[1] 吴波[1] 李国学[2] 

机构地区：[1]环境保护部环境工程评估中心,北京100012 [2]中国农业大学资源与环境学院,北京100094

出　　处：《环境工程学报》2008年第10期1413-1415,共3页Chinese Journal of Environmental Engineering

摘　　要：高温堆肥后污泥的土地利用可充分发挥资源化、无害化的优势,污泥土地利用防止重金属污染一直是污泥施用中最重要的问题。通过测验发芽率指数这一代表植物毒性的指标证明,通过在污泥堆肥中加入粉煤灰、磷矿粉和草炭等不同的改性剂或重金属钝化剂可大大降低堆肥的植物毒性,从而降低污泥中重金属的可利用性。Sewage sludge through high temperature compost used as fertilizer can make it resourceable and harmless, but the major draw back of sewage sludge composting is the high heavy metal content in the end-product. It is therefore the aim of the present study to develop germinate rate index representing toxicity to plant to prove that, adding different passivation reagents such as fly ash, phosphorate rock, zeolite to sewage sludge compost can reduce toxicity to plant remarkably, thus reduce the heavy mental availibility

关 键 词：污泥堆肥 重金属 钝化剂 发芽率指数 植物毒性 

分 类 号：X703.1[环境科学与工程—环境工程]