• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Peat Congress; 20040606-11; Tampere(FI) >USE OF WOOD-CHIP BARRIERS FOR WATER PROTECTION AT PEAT PRODUCTION SITES
【24h】

USE OF WOOD-CHIP BARRIERS FOR WATER PROTECTION AT PEAT PRODUCTION SITES

机译：使用木屑障碍物在泥炭生产地进行防水

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

Wood-chip barriers are barriers constructed of peat, wood chips and subsurface drains which serve as an efficient and inexpensive means of levelling out peak loads of suspended solids in the runoff water from peat production areas nearing the end of their economic life, when an excavator is used to concentrate the peat in certain strips. The research reported on here was carried out on the mire of Viidansuo in northern Finland in the summers of 2002 and 2003. Comparison of a peat production area provided with a wood-chip barrier and one without such a barrier showed that reductions of about 40% in both mean discharge and the peak discharge rates were achieved in the former. The reductions in discharge were achieved partly as a consequence of increased evaporation, which also meant that concentrations of substances affecting water quality were higher than in the runoff water from areas without a wood-chip barrier. Solid matter loading in the areas with excavated plots was on average only a fifth of that in a traditional peat production area, and nitrogen and phosphorus loads were also markedly lower. Although the water samples were taken from above the sedimentation basin in both of the sectors where the peat had been concentrated, loading was in general less than the average for mires with a sedimentation basin as reported by the Northern Ostrobothnia Environment Centre. The results also suggest that the areas from which the peat has been removed function as evaporation basins, substantially reducing the volume of runoff water and thereby the extent of loading of the waterways downstream of the peat production area. On the other hand, the wood-chip barriers do not appear to have any pronounced effect in restraining the passage of dissolved substances into these waterways.
机译：木屑屏障是由泥炭，木屑和地下排水沟构成的屏障，当挖掘机使用接近经济寿命时，可作为一种经济有效的方法来平抑泥炭生产地区径流水中悬浮固体的峰值负荷。用于将泥炭集中在某些条中。此处报道的研究是在2002年和2003年夏天对芬兰北部的维丹苏（Viidansuo）泥沼进行的。对设有木片屏障和无木片屏障的泥炭生产区进行比较，结果表明减少了约40％前者的平均放电率和峰值放电率都达到了。减少排放的部分原因是增加了蒸发，这也意味着影响水质的物质的浓度高于没有木片屏障的地区的径流水中。在有开挖地块的地区，固体物质的平均负载量仅为传统泥炭生产区的平均水平的五分之一，而氮和磷的负载量也显着降低。尽管水样是从泥炭集中的两个区域的沉淀池上方采集的，但总的负载量通常小于北部博物环境中心报告的沉积池泥潭的平均值。结果还表明，除去泥炭的区域起着蒸发池的作用，大大减少了径流水的量，从而减少了泥炭生产区下游水道的负荷程度。另一方面，木屑屏障在限制溶解物质进入这些水道中似乎没有任何明显的作用。

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