A soil leachate in-situ collection device and collection method

By designing an easy-to-install in-situ soil leachate collection device, combined with a screw-cap plug and filtration system, the problems of complex structure and poor filtration effect of existing devices are solved, achieving efficient and diverse soil leachate collection and accurate analysis.

CN116907922BActive Publication Date: 2026-07-14NORTHEAST AGRICULTURAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHEAST AGRICULTURAL UNIVERSITY
Filing Date
2023-07-27
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing soil leachate collection devices are complex in structure, cumbersome to install and operate, cause significant disturbance, have poor filtration effect, limited applicability, low collection efficiency, and are prone to altering sample properties, thus affecting the accuracy of analysis.

Method used

A soil leachate in-situ collection device was designed, which includes sampling, filtration, collection and liquid level monitoring mechanisms. The filtration system consists of a screw cap plug, an extension tube, a filter tube and a filter disc. Combined with liquid level monitoring and an electric valve, it achieves convenient installation, diverse collection and efficient filtration.

Benefits of technology

It enables convenient installation on soils of different textures, efficient filtration, ensures the authenticity and validity of the collected liquid, supports timed and quantitative collection, reduces soil disturbance, and improves the accuracy of analysis.

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    Figure CN116907922B_ABST
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Abstract

The application discloses a kind of soil leachate in-situ collection device and collection method, including sampling mechanism, filtering mechanism, collection mechanism and liquid level monitoring mechanism;Sampling mechanism includes collection bottle, vacuum pump and liquid collecting tube, vacuum pump is connected with collection bottle by suction pipe, collection bottle is also connected with the liquid collecting tube extending into filtering mechanism and collection mechanism;Filtering mechanism includes screw cap plug, extension pipe, filter tube and filter disc, screw cap plug is arranged above filter tube, filter disc is connected at the bottom end of filter tube, a plurality of evenly distributed filter holes are provided on filter tube and filter disc, and the outer side of filter tube and filter disc is covered with one side filter screen.The application adopts the above-mentioned structure of a kind of soil leachate in-situ collection device and collection method, solves the problems of poor filtering effect, low collection efficiency and small application range of the collection device in the prior art.
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