• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Nitrate Contamination of Groundwater on the Old Mission Peninsula: Contribution of Land Reshaping and Septic Drainfields
【24h】

Nitrate Contamination of Groundwater on the Old Mission Peninsula: Contribution of Land Reshaping and Septic Drainfields

机译：旧使命半岛地下水硝酸盐污染：土地整理和化粪池的贡献

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Research was carried out to determine the concentration of nitrate nitrogen in the soil with depth as affected by reshaping land surfaces, as well as its concentration leading from septic drainfields, in order to examine the movement of nitrate through soils as a result of reshaping soil surfaces and using septic drainfields. In both cases, nitrate values exceeding the drinking water standard were observed. However, the nitrate increases as a result of land reshaping were not considered to be a major source of groundwater contamination. Septic systems were found to give 20-40 ppm nitrate nitrogen during all seasons of the year, which is 2-4 times the drinking water standard. This is expected to represent a serious contamination source, since it is not expected to be diluted by more than about half for the lot sizes in many of the Peninsula subdivisions.

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