公开(公告)号：US5490561A

公开(公告)日：1996-02-13

申请号：US398537

申请日：1995-03-06

申请人： Joao E. Cardoso-Neto ,  Daniel W. Williams

发明人： Joao E. Cardoso-Neto ,  Daniel W. Williams

IPC分类号： E21B49/08

CPC分类号： E21B49/084

摘要： A purge water management system for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at the well site. A pump, positioned with the monitoring well, pumps groundwater through the transportation system into the expandable container, which expands in direct proportion with volume of groundwater introduced, usually three or four well volumes, yet prevents the groundwater from coming into contact with the oxygen in the air. After this quantity of groundwater has been removed from the well, a sample is taken from a sampling port, after which the groundwater in the expandable container can be returned to the monitoring well through the return system. The purge water management system prevents the purge water from coming in contact with the outside environment, especially oxygen, which might cause the constituents of the groundwater to oxidize. Therefore, by introducing the purge water back into the monitoring well, the necessity of dealing with the purge water as a hazardous waste under the Resource Conservation and Recovery Act is eliminated.

摘要翻译： 一种清洗水管理系统，用于在从监测井获取地下水样品时有效地消除清除水的产生。 在其优选实施例中，净化水管理系统包括可膨胀容器，运输系统和返回系统。 清洗水管理系统连接到井口采样配置，通常永久安装在井场。 与监测井一起定位的泵将地下水通过运输系统泵送到可膨胀容器中，膨胀容器与被引入的地下水的体积成正比，通常为三个或四个井体积，同时防止地下水与氧气接触 空气。 在从井中取出这一数量的地下水之后，从取样口取出样品，此后，可膨胀容器中的地下水可以通过返回系统返回到监测井。 清洗水管理系统可防止清洗水与外部环境（尤其是氧气）接触，这可能导致地下水成分氧化。 因此，通过将清洗水引入监测井，在“资源保护和恢复法案”下，将清除水作为危险废物处理的必要性被消除。