Multi-section earth-pillar for simulating soil in petroleum hydrocarbon polluted aeration zone

Abstract

The invention provides a multi-section earth-pillar for simulating soil in a petroleum hydrocarbon polluted aeration zone. The multi-section earth-pillar at least comprises a base, a rotatable earth-pillar device, a sampling and sample-measuring device and a leaching device, wherein the rotatable earth-pillar device is arranged and fixed on the base; the leaching device is arranged on the top of the rotatable earth-pillar device, wherein the rotatable earth-pillar device comprises three or more rotatable earth-pillar units, a compact gauze element, an organic glass plate A with holes and a sample-collecting cavity of a sand-core funnel; the leaching device comprises a peristaltic pump, a glass rotator flow meter, an organic glass plate B with holes, a top cover and a rubber tube; the sampling and sample-measuring device comprises a sampling unit and a sample-measuring unit, wherein sampling heads which are arranged in the rotatable earth-pillar units are arranged on the sampling unit; and the sample-measuring unit is connected with the sampling unit and used for detecting the samples taken out by the sampling unit. The multi-section earth-pillar provided by the invention solves the defects in the prior art, can automatically sample in a quantitative manner, can get the soil in a layered manner to measure the content of petroleum hydrocarbons in the soil, and also can reduce the influence of sampling on the flow fields.

Description

technical field [0001] The invention relates to a multi-section soil column, in particular to a multi-section soil column for simulating petroleum hydrocarbon polluted vadose zone soil, and belongs to the field of hydrogeological research. Background technique [0002] With the gradual development of the industrialized economy, the petroleum industry occupies an important economic position in various countries. Petroleum is called the "black gold" and "economic blood" of the economy and even the entire society. As an important energy source, its application scope is still Continuing to expand, the consumption is also increasing day by day. While it brings great benefits to human beings, it also brings serious harm. In the process of oil extraction, refining, storage, transportation and use, due to the limitations of technological level and treatment technology, oil may enter the surface soil through leakage or oily sewage, and then be directly or indirectly brought into the...

AI Technical Summary

Problems solved by technology

At present, there is no physical simulation device specially used for petroleum hydrocarbon-contaminated soil in the vadose zone on the market. The existing device can only measure the petroleum hydrocarbon content in the leachate, and it is impossible to study the petroleum hydrocarbon content in the soil after the experiment. The experimental device can only be manually sampled, and the sample loss is relatively large, which has a great impact on the flow field in the soil column. At the same time, the petroleum hydrocarbons pollute the soil in the vadose zone for a long period, which requires a lot of manpower to measure and sample; the existing experimental devices cannot meet the needs of petroleum Longitudinal scale of hydrocarbon-contaminated vadose zone soils; inability to accurately model petroleum hydrocarbon-contaminated vadose zone soils

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