由于老卤回渗，已影响到厂区和采区的环境。

Because old bittern answers ooze, already affected plant area and the environment select an area.

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同时，从经济、技术、环境效益和社会效益等几个方面对渗沥液再生回用可行性进行分析。

Within the concerned research, we studied feasibility of re-generation and recycling of leachet in economic, technical, environmental & social benefits and other aspects.

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