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首页> 外文会议>RCST 2011 >Effects of Lime Stabilized Sewage Sludge Compost on Soil Physicochemical Properties and Heavy Metal Uptake by Ryegrass
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Effects of Lime Stabilized Sewage Sludge Compost on Soil Physicochemical Properties and Heavy Metal Uptake by Ryegrass

机译：利石稳定污泥堆肥对土壤理化性质及重度金属吸收的影响

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摘要

A pot experiment was performed to study effects of application of metal rich sludge cocomposted with lime on soil physicochemical properties, ryegrass biomass and heavy metal uptake by ryegrass. The results show that application of sludge compost with(LSC) and without lime(SC) could increase the soil pH, and the organic matter, available N, P and K in soils, consequently, improve the growth of ryegrass. No significant differences were found in the plant growth between sludge composted with lime and without lime. Sludge compost rich in Zn and Cd resulted in two elementals accumulation in soil and plant. The content of Zn and Cd in ryegrass from LSC-treated soil was much lower than those from SC-treated soils at the same application rate. The results illustrated that lime was very effective in stabilizing Zn and Cd in compost. However, the fact that Cd in ryegrass from LSC treated soil was close to or even exceeded the guideline for the health standard of feed and food in China(GB 13078-2001) implied the limitation of liming in stabilization heavy metals in sludge.
机译：进行锅实验，以研究金属富污泥与石灰在土壤理疗性质，黑麦草生物量和黑麦草重金属摄取的影响。结果表明，污泥堆肥与（LSC）和不含石灰（SC）的应用可以增加土壤pH，以及土壤中的有机物，可用的N，P和K，从而提高黑麦草的生长。在污泥之间的植物生长中没有发现显着差异，用石灰和没有石灰堆肥。污泥堆肥富含Zn和Cd，导致土壤和植物中的两个元素积累。来自LSC处理的土壤中的黑麦草中Zn和Cd的含量远低于相同施用率的SC处理土壤的含量远低得多。结果表明，石灰在堆肥中稳定Zn和Cd非常有效。然而，来自LSC处理土壤的黑麦草中的CD接近甚至超过了中国饲料和食品的健康标准指南（GB 13078-2001）暗示了污泥中稳定重金属的限制。

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