• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>11th Annual North American Waste to Energy Conference Apr 28-30, 2003 Tampa, Florida >Environmental Characterization of Ash from the Combustion of Wood and Tires for Beneficial Use in Florida
【24h】

Environmental Characterization of Ash from the Combustion of Wood and Tires for Beneficial Use in Florida

机译：佛罗里达州有益燃烧木材和轮胎燃烧产生的灰分的环境特征

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Florida, along with many states, has developed policies for determining when a non-hazardous industrial solid waste such as combustion ash can be land applied in a beneficial manner. As part of research investigating the use of leaching tests for risk-based decision making in solid waste management, ash from a facility that combusts wood debris and tires for fuel was characterized. From a direct human exposure pathway, arsenic was found to be the most limiting metal. This is likely to be the case with many combustion ashes, as Florida has relatively low risk based clean soil levels for arsenic. Even ash from the combustion of clean wood will have arsenic concentrations greater than the SCTL for arsenic. Iron and copper also exceeded their respective SCTLs for residential application, but not for industrial application. It is noted that unlike arsenic (which is a carcinogen), copper and iron are listed only based on toxicity. With respect to leaching, two different approaches were compared: comparing total concentrations (mg/kg) to the leaching SCTLs and comparing actual leachate concentrations (mg/L) to GWCTLs. Comparison with the leaching SCTLs indicated that arsenic, chromium and zinc would pose a potential risk to ground water. The SPLP results did not find these metals to pose a risk, but found lead instead. This suggests that using leaching SCTLs that are developed for soil is not appropriate for application to combustion ash. The SPLP results showed elevated levels of lead (above the GWCTL). When compared to steady state concentrations measured in the 1ft lysimeters, SPLP lead concentrations matched very well. This suggests that SPLP concentrations were reflective of the pore water concentration for this ash and that a dilution factor should be applied if one is appropriate for the particular land application scenario. The authors note, however, that SPLP concentrations for other wastes and metals may not always be representative of pore water concentrations.
机译：佛罗里达州与许多州一起制定了政策，以确定何时可以以有益的方式土地利用无害的工业固体废物（例如燃烧灰）。作为研究在固体废物管理中使用浸出测试进行基于风险的决策研究的一部分，煤粉燃烧了木屑和轮胎作为燃料的设施中的煤灰得到了表征。从直接的人类接触途径中，发现砷是最有限的金属。对于许多燃烧灰烬，情况很可能是这样，因为佛罗里达州基于砷的清洁土壤含量风险相对较低。即使是清洁木材燃烧产生的灰烬，其砷浓度也要比SCTL的砷浓度高。铁和铜在住宅应用中也超过了各自的SCTL，但在工业应用中则没有。注意，与砷（致癌物）不同，仅根据毒性列出铜和铁。关于浸出，比较了两种不同的方法：将总浓度（mg / kg）与浸出SCTLs比较，将实际渗滤液浓度（mg / L）与GWCTLs比较。与浸出SCTL的比较表明，砷，铬和锌将对地下水构成潜在风险。 SPLP结果并未发现这些金属构成风险，而是找到了铅。这表明使用为土壤开发的浸出SCTL不适合应用于燃烧灰分。 SPLP结果显示铅含量升高（高于GWCTL）。与在1英尺测力计中测得的稳态浓度相比，SPLP铅浓度非常匹配。这表明SPLP浓度反映了该灰分的孔隙水浓度，如果适用于特定的土地应用场景，则应采用稀释系数。然而，作者指出，其他废物和金属的SPLP浓度可能并不总是代表孔隙水浓度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号