• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Sixth International in Situ and On-Site Bioremediation Symposium, 6th, Jun 4-7, 2001, San Diego, California >CASE STUDY OF EX-SITU BIOLOGICAL TREATMENT OF PERCHLORATE-CONTAMINATEDGROUNDWATER
【24h】

CASE STUDY OF EX-SITU BIOLOGICAL TREATMENT OF PERCHLORATE-CONTAMINATEDGROUNDWATER

机译：高氯酸盐污染地下水异位生物处理的案例研究

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

Groundwater in certain areas at Longhorn Army Ammunition Plant (LHAAP) (Texas) contains volatile organic compounds (VOCs) and perchlorate from past operations at the site. Groundwater from a Burning Ground and Landfill is currently being remediated by pumping the water from an interceptor collection trench system to the surface, removing VOCs and metals in an ex-situ treatment process, and discharging the treated water to a nearby stream. In early 2000, the Army Corps of Engineers Tulsa District, which oversees the operation of the groundwater treatment plant, took steps to supplement the existing treatment process with a biological fluid bed reactor (FBR) to remove the perchlorate prior to surface water discharge. After preliminary FBR sizing and costing information was obtained, a laboratory treatability program was conducted to confirm the system design assumptions and confirm the effectiveness of the FBR process for treating the LHAAP groundwater. Approximately 650 gallons (2,460 liters) of LHAAP groundwater containing 11,000 to 23,000 (average 16,500) μg/L of perchlorate were used for the evaluation. Both acetic acid and ethanol were investigated as growth (I.e. Electron donor) substrates. For the majority of the test, effluent perchlorate concentrations were below the quantitation limit of 5 μg/L, except when the laboratory FBR was operated at a low substrate load to determine the point of treatment failure. The target effluent perchlorate concentration was 350 μg/L. Based on the success of the laboratory test, a full-scale FBR system with the capacity to treat 50 gallons per minute (gpm) (190 liters per minute) of LHAAP water has been installed at the groundwater treatment plant. System start-up occurred in February 2001.
机译：Longhorn陆军弹药厂（LHAAP）（得克萨斯州）某些区域的地下水中含有挥发性有机化合物（VOC）和该地点过去的作业中产生的高氯酸盐。当前，正在通过以下方法来补救燃烧的土地和垃圾填埋场中的地下水：将水从拦截器收集沟槽系统中抽到地表，在异地处理过程中去除VOC和金属，并将处理后的水排放到附近的溪流中。在2000年初，负责地下水处理厂运营的陆军工程兵塔尔萨区军队采取了一些步骤，以利用生物流化床反应器（FBR）补充现有的处理工艺，以在地表水排放之前去除高氯酸盐。在获得了初步的FBR规模和成本信息之后，进行了实验室可处理性计划，以确认系统设计假设并确认FBR工艺处理LHAAP地下水的有效性。评估使用了大约650加仑（2,460升）的LHAAP地下水，其中包含11,000至23,000（平均16,500）μg/ L的高氯酸盐。研究了乙酸和乙醇作为生长（即电子供体）的底物。对于大多数测试，流出的高氯酸盐浓度低于5μg/ L的定量极限，除非实验室FBR在低底物负载下运行以确定处理失败点。废水的高氯酸盐目标浓度为350μg/ L。基于实验室测试的成功，已在地下水处理厂安装了满规模的FBR系统，该系统能够处理每分钟50加仑（gpm）（每分钟190升）LHAAP水。系统于2001年2月启动。

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