非水相硝基苯在含水层中的迁移释放规律
Migration and releasing rules of non-aqueous nitrobenzene in aquifer
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摘要: 通过室内模拟实验,探讨了在非水相硝基苯污染含水层的条件下,其在含水层中的迁移及释放规律。迁移规律表明,非水相硝基苯并非在含水层中直接进行垂向迁移,而是一方面在自身重力作用下向含水层下部迁移,另一方面在地下水流的作用下随地下水同向运移,整体表现为随地下水流的侧向运移,并最终迁移至含水层底部。释放规律表明,非水相硝基苯在含水层迁移的过程中会向地下水大量释放,释放出的硝基苯在水流的作用下随地下水同向运移,污染源及迁移至含水层底部的非水相硝基苯均存在再次释放。Abstract: A simulated tank experiment was carried out to investigate the migration and releasing rules of nonaqueous nitrobenzene in aquifer. The migration rules indicated that nonaqueous nitrobenzene was not migrating directly in the vertical, on one hand, nonaqueous nitrobenzene migrated to the lower and finally to the bottom of the aquifer, on the other hand, it migrated with the groundwater, in a whole, it was the lateral migration in the groundwater.The releasing rules showed that nonaqueous nitrobenzene would release much nitrobenzene to the groundwater while migrating in aquifer. the released nitrobenzene flowed with the groundwater in the same way, and the nonaqueous nitrobenzene both in the pollution area and in the bottom of the aquifer would release again.
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Key words:
- non-aqueous nitrobenzene /
- aquifer /
- migration and releasing rules
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