陈长捷为什么杀妻:土壤修复技术

• Fotolia.com'> Fotolia.com'>Environmental remediation restores a site to healthy and productive use. pollution 1 image by Nathalie P from Fotolia.com Fotolia.com'>环境整治的一个网站恢复健康和富有成效的使用。 污染娜塔莉P 1图像从Fotolia.com

  Environmental remediation is the practice of removing pollution or contaminants from elements of the environment to restore an area to healthy, productive use.环境整治是消除环境要素的污染或污染，恢复健康，生产使用面积的做法。 According to its publication "Green Remediation" (EPA 542-R-08-002), the US Environmental Protection Agency actively supports site remediation and reuse.据其出版的“绿色整治”（EPA 542 - R - 08 - 002），美国环境保护署积极支持网站的整治和重用。 Soil and water remediation techniques include excavation, soil vapor extraction, stabilization, oxidation, pumping and treating, and surfactant-enhanced aquifer remediation (SEAR).水质和土壤修复技术包括开挖，土壤蒸气萃取，稳定，抗氧化，泵送和治疗，以及表面活性剂增强的含水层修复（弘）。

Excavation挖掘

• Excavation in its simplest form is the removal of contaminated soil.最简单的形式中进行挖掘，清除受污染的土壤。 According to the EPA's Best Management Practices, excavation is useful for addressing immediate risks to human health and in cases where other methods are not feasible.根据EPA的最佳管理实践，挖掘解决立即对人体健康构成的风险和其他方法并不可行的情况下是有用的。 When possible, excavation is used as part of other remediation techniques where the excavated soil is cleaned and restored.在可能的情况下，挖掘被用作其他补救措施，挖出的泥土清理和恢复技术的一部分。

Soil Vapor Extraction土壤气相抽提

• Soil vapor extraction is also called soil venting and vacuum extraction.土壤蒸气萃取也被称为土壤通风和抽真空。 It utilizes a vacuum applied via horizontal or vertical wells drilled near the source of the contamination.它采用通过污染源附近的钻水平或垂直井应用了真空。 The vacuum draws off the volatile constituents of the contaminants; after the collected vapor is treated, it is released into the atmosphere.真空提请关闭的污染物的挥发性成分，收集蒸汽处理后，它释放到大气中。

Stabilization稳定

• Soil stabilization uses chemical reagents added to the soil to create more chemically stable materials or to physically encapsulate the volatile material, thus reducing its mobility.土壤稳定使用添加到土壤，创造更多的化学性质稳定的材料或物理封装的挥发性物质的化学试剂，从而减少其流动性。 Lime is often used to neutralize acids and to convert metals to more chemically stable forms, and both lime and cement can be used to solidify contaminants so that they don't leach out or react further.是经常使用的石灰中和酸和金属的化学性质稳定的形式转换，都可以用石灰和水泥，以巩固污染物，使他们不滤出或进一步反应。

In Situ Chemical Oxidation原位化学氧化法

• In situ chemical oxidation relies on injected oxidants to convert contaminated media into harmless, naturally occurring compounds.原位化学氧化依赖注入的氧化剂将其转换成无害的，自然产生的化合物污染的介质。 The most common oxidant is a hydroxyl-free (OH-free) radical created by applying hydrogen peroxide with iron.最常见的氧化剂，是一个羟基（OH免费）自由基申请过氧化氢与铁创建。 The resulting radical is useful for oxidizing complex organic compounds.复杂的有机化合物氧化产生的自由基是有用的。 Other powerful oxidants such as ozone or potassium permanganate may be used, and in some cases the injection of oxygen or simply the ambient air is sufficient.其他强氧化剂如臭氧或高锰酸钾可以使用，并注入氧气或单纯的环境空气，在某些情况下是足够的。

Pump and Treat泵和治疗

• The pump-and-treat remediation technique for contaminated groundwater is self-descriptive in that it consists of pumping contaminated water out of the ground and treating it.泵和处理污染的地下水的修复技术是自描述的，它由抽受污染的水，地面和治疗。 The treatment involves absorption of the contaminated material by passing the water through different absorbing materials.治疗包括通过不同的吸音材料，通过水的污染物质的吸收。 Flocculants (substances, including clay, that help separate the contaminant from the water) may also be added to the water, which is then passed through filters.絮凝剂（物质，包括粘土，这有助于从单独的水污染物），也可添加到水，然后通过过滤器通过。

SEAR (Surfactant-Enhanced Aquifer Remediation)弘（表面活性剂增强含水层整治）

• Fotolia.com'> Fotolia.com'>Chlorinated hydrocarbons are found in many US aquifers. water drops enters into water image by Denis Tabler from Fotolia.com Fotolia.com'>氯代烃是美国在许多含水层中 发现，水滴进入丹尼斯Tabler水的形象 ，从Fotolia.com

  SEAR is a technique used to remove nonaqueous phase liquids (NAPLs) from water.弘是用于去除水中的非水相液体（NAPLs）一种技术。 These NAPLs are common groundwater contaminants that, according to the environmental engineering department of the University of Texas, are found in many US aquifers.这些NAPLs，根据得克萨斯大学环境工程系，美国在许多含水层中发现的常见的地下水污染物。 They are produced by chlorinated hydrocarbons widely used as solvents.他们是由广泛用作溶剂的氯化烃。 Because they don't mix with water, the addition of surfactants (agents to lower surface tension) is required for their recovery.由于他们不与水混合，除了表面活性剂（代理人较低的表面张力），要求其恢复。 The increased solubility and mobility of the contaminant allows for its removal.增加溶解度和污染物的流动性，允许其去除。