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首页> 外文会议>Conjunctive use of water resources: Aquifer storage and recovery >WELLHEAD TREATMENT AS AN ALTERNATIVE TO STANDARD REMEDIATION METHODS FOR REGIONAL GROUNDWATER CONTAMINATION PROBLEMS
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WELLHEAD TREATMENT AS AN ALTERNATIVE TO STANDARD REMEDIATION METHODS FOR REGIONAL GROUNDWATER CONTAMINATION PROBLEMS

机译：井口处理作为区域地下水污染问题的标准补救方法的替代方法

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Thousands of instances of groundwater contamination have been documented in California. Where groundwater has been designated as having a "beneficial use" by a California Regional Water Quality Control Board (RWQCB), groundwater remediation at the point of contamination is usually required. State Board Resolution No. 92-49, the "Policies and Procedures for Investigation and Clean-Up and Abatement of Discharges" under Section 13304 of the California Water Code, authorized the RWQCB to require complete cleanup and restoration of affected water to background conditions, and Section 13307 required the State Water Resources Control Board to identify and utilize the most cost-effective methods for cleanup or abatement of the effects of contamination. In October 1996, the State Board adopted Resolution No. 96-79 which amended Resolution No. 92-49, to incorporate the "containment zone policy", in part because it was apparent that many groundwater remediation systems installed at sources of contamination were likely to operate for decades without the technical assurance of restoring groundwater to background conditions.rnGiven the widespread occurrence of groundwater contamination in California, treatment of extracted groundwater at the point of use (wellhead treatment) may be more cost effective than aquifer restoration at source areas. While some degree of plume monitoring, containment, or "hot spot" mass removal may be required at many sites, a shift in emphasis from source area aquifer restoration to wellhead treatment and water reuse may be justified for many areas where groundwater degradation is widespread and/or multiple sources with commingling plumes are present. Additionally, treating water at the point of use is consistent with a risk-based approach to environmental restoration, where limited resources are used to solve actual problems.
机译：加利福尼亚已经记录了成千上万的地下水污染案例。如果加利福尼亚州区域水质控制委员会（RWQCB）将地下水指定为“有益用途”，通常需要在污染时对地下水进行补救。加州第92-49号决议，《加利福尼亚水法》第13304条下的“调查，清理和减少排放的政策和程序”，授权RWQCB要求将受影响的水彻底清理和恢复到背景条件，第13307条要求州水资源控制委员会确定并利用最具成本效益的方法来清理或消除污染影响。 1996年10月，国务院通过了第96-79号决议，对第92-49号决议进行了修订，以纳入“围堵区政策”，部分原因是显然很可能在污染源安装了许多地下水修复系统几十年来，在没有将地下水恢复到本底条件的技术保证的情况下运行。鉴于加利福尼亚州广泛存在的地下水污染，在使用点处理抽出的地下水（井口处理）可能比在源头恢复含水层更具成本效益。尽管在许多地方可能需要一定程度的烟羽监测，遏制或“热点”质量清除，但对于地下水分布普遍且分布广泛的许多地区，从源区含水层恢复到井口处理和水回用的重点转移可能是合理的。 /或存在混合羽状流的多个源。此外，在使用时对水进行处理与基于风险的环境恢复方法相一致，在该方法中，有限的资源用于解决实际问题。

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