This invention relates to a method

This invention relates to a method for the in-situ reduction of hexavalent chromium to trivalent chromium in soil comprising hexavalent chromium. The method comprises sampling soil comprising hexavalent chromium to determine a reaction amount of a reducing agent, providing a frame on a top surface of the soil, and wetting the soil. The method further comprises spreading a reducing agent on the top surface of the soil and flushing the soil with water to dissolve the reducing agent.
This invention also relates to a method for the in-situ reduction of hexavalent chromium to trivalent chromium in soil comprising hexavalent chromium in a hydraulically isolated area. The method comprises sampling soil comprising hexavalent chromium to determine a reaction amount of a reducing agent, providing a frame on a top surface of the soil, and wetting the soil. The method further comprises spreading a reducing agent on the top surface of the soil, flushing the soil with water to dissolve the reducing agent, pumping water comprising the reducing agent from an aquifer below the soil and applying the pumped water to the soil.
This invention also relates to a method for the in-situ reduction of hexavalent chromium to trivalent chromium in soil comprising hexavalent chromium in a hydraulically isolated area wherein the area comprises a contaminated waste product selected from the group consisting of return activated sludge and waste activated sludge. The method comprises sampling soil comprising hexavalent chromium to determine a reaction amount of a reducing agent, calculating a reduction power of the contaminated waste product, providing a frame on a top surface of the soil, and wetting the soil. The method further comprises pumping water comprising the contaminated waste product from an aquifer below the soil and applying the pumped water to the soil.
This invention includes a method for the in-situ reduction of hexavalent chromium to trivalent chromium in ground- water comprising hexavalent chromium. The method comprises sampling groundwater comprising hexavalent chro- mium to determine a reaction amount of a reducing agent, providing a frame on a top surface of the soil and providing a recovery well and a circulating means on a down gradient side of the frame. The method further comprises wetting the soil, spreading a reducing agent on the top surface of the soil, flushing the soil with water to dissolve the reducing agent, and pumping water comprising the reducing agent from the recovery well below the soil and applying the pumped water to the soil.
A further method provided by this invention is a method for the in-situ reduction of hexavalent chromium to trivalent chromium in soil comprising hexavalent chromium. The method comprises sampling soil comprising hexavalent chromium to determine a reaction amount of a reducing agent, providing a frame on a top surface of the soil and providing a recovery well and a circulating means on a down gradient side of the frame. The method further comprises wetting the soil, spreading a reducing agent on the top surface of the soil, flushing the soil with water to dissolve the reducing agent, and pumping water comprising the reducing agent from the recovery well below the soil and applying the pumped water to the soil.

結果 (中文) 1:

本发明涉及一种原位降低到包括六价铬的土壤中的三价铬六价铬的方法。该方法包括取样土壤组成六价铬测定反应量的还原剂，在土壤中，顶面上提供一个框架和湿润的土壤。该方法还包括传播还原剂用量对土壤的顶面和冲厕用水溶解还原剂土壤。本发明还涉及在原位还原六价铬对三价铬在土壤组成一个液压隔离的地区中六价铬的一种方法。该方法包括取样土壤组成六价铬测定反应量的还原剂，在土壤中，顶面上提供一个框架和湿润的土壤。该方法还包括传播还原剂用量对土壤，冲厕用水溶解还原剂，抽水组成还原剂从含水层下面的土壤并把抽上来的水应用于土壤土壤的顶面。本发明还涉及一种方法中的三价铬六价铬的原位减少土壤中液压隔离的地区，该地区其中包括选自集团构成的活性污泥回流污染的废物产品包括六价铬和浪费活性的污泥。该方法包括取样土壤组成六价铬测定反应量的还原剂，受其污染的废物产品减少功率计算，提供一个框架，在土壤中，顶面和湿润的土壤。该方法还包括抽水组成由下面的土壤含水层污染的废物产品和应用于土壤的抽上来的水。本发明包括在原位还原为三价铬六价铬的一种方法在地下水组成的六价铬。该方法包括取样地下水包括六价铬色谱钬测定反应量的还原剂，土壤的顶表面上提供一个框架，并提供恢复良好和循环意味着框架下梯度一边。该方法还包括湿润土壤、 传播还原剂用量对土壤的顶面、 冲厕用水溶解还原剂，土壤和水组成还原剂从远低于土壤恢复和应用于土壤的抽上来的水抽。本发明提供进一步的方法是在原位还原六价铬对三价铬在土壤组成六价铬的方法。该方法包括取样土壤组成六价铬测定反应量的还原剂，土壤的顶表面上提供一个框架，并提供恢复良好和循环意味着框架下梯度一边。该方法还包括湿润土壤、 传播还原剂用量对土壤的顶面、 冲厕用水溶解还原剂，土壤和水组成还原剂从远低于土壤恢复和应用于土壤的抽上来的水抽。

結果 (中文) 3:

本发明涉及一种六价铬在土壤含有六价铬三价铬的原位还原法。该方法包括确定含有六价铬的还原剂反应量的土壤采样，提供在土顶面框架，和湿润的土壤。该方法还包括传播的一种还原剂对土壤表层和冲洗土壤与水溶解的还原剂。
本发明还涉及一种含有六价铬在液压隔离区六价铬三价铬的土壤原位还原法。该方法包括确定含有六价铬的还原剂反应量的土壤采样，提供在土顶面框架，和湿润的土壤。该方法还包括在土壤上撒上一个还原剂，用以溶解该还原剂的水冲洗土壤，包括从土壤中的含水层中的还原剂，并将其应用于土壤中的水。本发明还涉及一种六价铬还原为三价铬在土壤中含有六价铬液压隔离区该区包括污染废物产品选自回流活性污泥和剩余活性污泥。该方法包括确定含有六价铬的还原剂反应量的土壤采样，计算该污染废物产品还原能力，提供在土顶面框架，和湿润的土壤。该方法还包括抽水包括污染废物的产品从下面的土壤和应用于土壤含水层抽水。
本发明包括一个六价铬为三价铬在地面的水含有六价铬的原位还原法。该方法包括抽样包括六价相mium确定还原剂的反应量的地下水，提供在土顶面框架和提供回收和循环方式下的帧梯度侧。该方法还包括润湿土壤，在土壤表层上撒上一个还原剂，冲洗土壤与水溶解的还原剂，还原剂及抽水，包括从恢复低于土壤应用抽水的土壤。
进一步的方法本发明提供的是一个六价铬在土壤含有六价铬三价铬的原位还原法。该方法包括确定含有六价铬的还原剂反应量的土壤采样，提供在土顶面框架和提供回收和循环方式下的帧梯度侧。该方法还包括润湿土壤，在土壤表层上撒上一个还原剂，用水冲洗土壤以溶解还原剂，并将其泵水，包括还原剂从土壤中的回收以及将泵入土壤中。